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User Manual Moseley PCL-6000

Contents

1. 22272 ONNOYD HIXIN Ol 13 5 XVOD 830105 OND OL 830105 Moseley PCL6000 20B2941 Rev C IF DEMOD 6020 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 28 3 167 916 Lx rises 01 NOD 780 28 31 181 O OE 03319348 G931N SILON 0909 0009 124 Tee GSNVIEN LON S3LVSKNI Z LHES VI 1109 00 tcu 89 203 5 ILL KING SNOLVINM SV 1 19346 303 0360 61 HOLVNNILLV vo 7 TP 500 3113 ay ort gt al 83 9187451 Rev E Double Converter LO3 6030 Schematic PCL6000 602 13375 01 7 29 6000 FU 20 3039 Double Converter LO3 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 30 03319396 5631 SILON BS oot 12 lt vtl HIONGLE of 1 do 8 Av Sg 2 NI AME VNOR JU 0059 001 ven lt aw xoz Az 20 is
2. e 2 81 o Treni PET 2 ri 1 ERE 2081 0834 7 L 11 18 0849 1798 zd avem 74 944189 9330395 35Mi3HLO 5310 z8va SHL 03 1 16 JON TUN 291 HNN AITIVLSN LON WA HAN Zz DITWISN LON 1 IT DD GEN ETMEN A A A A A 91A7444 Rev D Transmitter Audio Power Supply Schematic p 1 of 3 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 4 9310 803 30 1 3804 335 1 2 bd 311 MATE td Vd WN 9 3 t 60 9 19 CL 2222 5 Vd vL TUNGA 1 va COLT mv BAD dans ov n L AIBW3SSV VB 91A7444 Rev D Transmitter Audio Power Supply Schematic p 2 of 3 PCL6000 602 13375 01 6000 91A7444 Rev D Transmitter Audio Power Supply Schematic p 3 of 3 2 N eL 7 5 s 54 3 1 eB TE T PCL6000 602 13375 01 PCL6000 602 13375 01 Schematic and Assembly Drawings Sr C w d E E 115 TIS TE
3. e Q Pr T in 94 NA qus wg AT 4 5598 21 vu 04 AINO LLYM 9 AINO 9109128 MOH TIVLSNI 403 Q3TIVISNI 930 12053 02 Rev B RF Amplifier 1 7GHz 6w Schematic p 1 of 2 PCL6000 602 13375 01 7 115 6000 exe 44 15 8 I m AVR DL Vd S I 9097284 9 303 TIVISNI JOULNOD 1 LLVML AINO TIVISNI 930 12053 02 Rev B RF Amplifier 1 7GHz 6w Schematic p 2 of 2 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 116 550555555555 RRR RRR LO EFEO S55 25555525252 ISI III IIIS KFX 2 X KK 9 9 9 595555955555 596255955595 595955596260 050000000500000950000000000000000000000000000000000 0000000000 10159 930 12052 02 RF Amplifier 1 7 GHz 6w Assembly PCL6000 602 13375 01 Moseley PCL6000 7 117 OBL CONV LO3 RF MODULE 5 a 5 5 lt REPLACE THIS CAUTION HIGH VOLTAGE 21B2927 Rev C 6030 Receiver Final Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 118
4. e 2 81 o Treni PET 2 ri 1 ERE 2081 0834 7 L 11 18 0849 1798 zd avem 74 944189 9330395 35Mi3HLO 5310 z8va SHL 03 1 16 JON TUN 291 HNN AITIVLSN LON WA HAN Zz DITWISN LON 1 IT DD GEN ETMEN A A A A A 91A7444 Rev D Transmitter Audio Power Supply Schematic p 1 of 3 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 36 9310 803 30 1 3804 335 1 2 bd 311 MATE td Vd WN 9 3 t 60 9 19 CL 2222 5 Vd vL TUNGA 1 va COLT mv BAD dans ov n L AIBW3SSV VB 91A7444 Rev D Transmitter Audio Power Supply Schematic p 2 of 3 PCL6000 602 13375 01 6000 91 7444 Transmitter Audio Power Supply Schematic 3 of 3 2 N eL 7 37 s 54 3 1 eB TE T PCL6000 602 13375 01 PCL6000 602 13375 01 Schematic and Assembly Drawings 9 wama el 0000 Cr e SEE qu
5. AG OO den In OL de m a meg GASSER 20D3023 Rev D Transmitter Audio Power Supply Assembly 7 39 HOTT mene bee AZL A 30 5907 038 G 1 e 2 21 MO0T AGH Tey fos ASt ta ror 0 un 21 d A lt COA AL ph T gt PA 2 BTS WNNON AL BAD 23 6000 12 0 01 INHI ua 93323535 35 MAHIO SSTINN SILON OS SJNTVA LIVA 4 1 SNHO NI NOLISIS3H 1 ale OL v v6 1 78 138 4 QL S 16 135 NOUVe3dO TINNVHILLTNN 03 Z 10999 0 080 1 99 8 20900 066 96 675 9383 B7d V2d EJd Tid OL 83293431 mA DON Yu 33113 4001 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 40 v N adze 15 sco szo 2 gt 83119 SSvd MO 852 089 00 Su EGA gpu ZTu 5 0 0 n Lr ow 241 38 090 200
6. Mb L SRHO NI JUV 5 2015535 71 ANVOGEDIN 3 1931 NI INWA 193136 99 7 Nou vu3do 480 559418 GU 303 037748 120158 7 440 veru umo uo i ov pea o eu ea nzo9 194 z nvieN 09 184 1 2 91 7375 Demod 6020 Schematic PCL6000 602 13375 01 7 61 4 ZA 2022 2 22 22 2 7 2 22022 227 gg TT 222 22272 ONNOYD HIXIN Ol 13 5 XVOD 830105 OND OL 830105 Moseley PCL6000 20 2941 2 Rev IF DEMOD 6020 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 62 3 167 916 Lx rises
7. 5 3 9 STL Frequency Change PARERE P poe asas 5310 FMO Adjustment e e eR RR OP RR HERRERA 5 3 11 Transmitter Troubleshooting 5 4 Module Adjustments Information 5 4 1 Transmitter Audio Power Supply 5 4 2 Transmitter RF Module 5 25 5 4 3 Doubler Assembly 1 7 GHZ erani e re erre trees 5 4 4 DIR BR RR 5 4 5 Receiver Audio Power Supply 25 5 4 6 Receiver RE Module tee inda 5 4 7 JF D mod 6020 1 ene to tte OR DO RE EH 5 4 8 Double Converter LO3 PCL6030 6060 5 4 9 Preamp 1st Mixer 950 MHz PCL6060 5 4 10 FM Demod PCL6030 6060 59 5 4 11 Adjacent Channel Filter PCL6060 5 4 12 Channel Control Board Multichannel 5 5 Kest Fixture 6 5 5 Uu 6 1 61 E 6 1 PCL6000 602 13375 01 Moseley PCL6000 6 2 Technical Consultation 6 1 63 Factory 6 2 6 4 Field Repai
8. 4 2 1 Transmitter Audio Power Supply 4 2 2 Transmitter RF Module 22 vus 4 2 3 RE ERROR RO 4 2 4 Channel Control Board Multichannel Option 4 3 Receiver Theory of Operation sscescssscccsscsssnescssasseasngesasasasscnsnssssoncsessaguecdagsssensdessasnessvoncessonssenssgaseoasnsssasness 4 12 4 3 1 Receiver Audio Power Supply see terre dette treten trie 4 12 4 3 2 Receiver RF Module n 4 3 3 Preamp Ist Mixer 950 MHz PCL6060 4 3 4 Demod PCL6020 eee E 4 3 5 Double Converter LO3 PCL6030 6060 4 3 6 Demod PCL6030 6060 4 3 7 Adjacent Channel Filter PCL6060 4 3 8 Channel Control Board Multichannel Option LM Wenige dd canoes tees ened 5 1 5 1 5 1 5 2 Test Equipment tec 5 1 5 3 Alignment Procedur s 5 3 1 STI Frequency Alignments eet aeree ae EU t e IR UR Ee e erteilen 5 3 2 nn dne t tette Aes 3 3 3 RECEIVER Selectivity iue tee EI neben res 5 3 4 Transmitter Deviation and Receiver Output Level Calibration 5 3 5 Ultimate Signal to Noise 0 5 3 6 Distortion Alignment e ee 5 3 7 Stereo Separation and Stereo Signal to Noise Ratio 5 3 8 Stereo Crosstalk
9. D 08 Transmitter Final Assembly 450 2 7 2182890 5 08 95 Transmiter AudiolPower Supply Schemaic 9167444 D 0855 Transmiter AudiolPower Supply Assembly 2085008 D 0855 Amper Schematic 4S0MH2 9107396 8 0855 RF AmpiferAssembly SOM 2082858 D 08 6020 Receiver Final Assembly 330 450 21B2891 4 08 95 8030 Receiver Final Assembly 330480 21828684 0 0885 Receiver Supply Schematic 600 1071001 0635 Receiver RF Module 6030 Assembly 20831073 8 0555 IF Demod 6020 Schematic Double Converter 6030 Schematic NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description PCL6000 602 13375 01 Moseley PCL6000 7 33 TX AUDIO POWER SUPPLY 21 gt gt w 21B2890 4 Rev D 6010 Transmitter Final Assembly 330 MHz PCL6000 602 13375 01 7 34 Schematic and Assembly Drawings RF MODULE gt ERI a 2 72 a gt lt gt lt 21 2890 5 6010 Transmitter Final Assembly 450 MHz PCL6000 602 13375 01 7 35 Moseley PCL6000 aut Ast lt zi DL a AZ a Wed 5 201 919 RIN AZ 25
10. LON YG U3TIVISN JON LUNT O3TIVISNI LON V7 GTIN JON 47 130 Iz 55599 99699990 A A A A A A A REST REST BEST REST RUST REST REST A AJ A2 28 23 328 38 A A A A HIS 5 5 t 1 5 5 c gt c3 HIT amv 01 81 vL 05 052 915 075 VZ 02 00 9187444 Rev D Transmitter Audio Power Supply Schematic p 1 of 3 PCL6000 602 13375 01 7 69 Moseley PCL6000 EJON 803 30 1 Dvd 385 ESTY GD ESL SHL 50773 rd 55 99 7335 maoine td ASt IN Pil 114 A yon 0 3 LIA Tg TB 4 47 38 I ef Tov ge ME vs Mu v r DHL bd anang el dg E NI er Na JD 5 8 22 2 gt gt 5 RU ST 0057 PG val Mis ENGE 114405 27 L MIBWASSV 4 PCL6000 602 13375 01 91B7444 Rev D Transmitter Audio Power Supply Schematic p 2 of 3 7 70 PCL6000 602 13375 01 Schem
11. RI 6 eu BPLI 08 Bl lt 001 awa vel ozu eu 600 10227 01 Transmitter RF Module Schematic p 2 4 PCL6000 602 13375 01 7 9 U31423dS 55377 SILON Wd SV 5 898 13 188 OI EXEC 381 1631 19139 1912 100 9613 9013 1015 862 862 3 240802 OL 038 SV 31113 150 ugpopt 01 804 1931 NI 193135 288 Q3TWIBNI LON IN oor m s moszz m fo m ees mw iw sumo oez o ocr 0 3 an aeeoe zoe om Dre oorr ores 969 ese bros mor age ones nee 224 ves pror ve A 096 008 210 ord olg ig 1 3 d ps WEI Moseley PCL6000 PCL6000 602 13375 01 600 10227 01 REV H Transmitter RF Module Schematic p 3 of 4 Schematic and Assembly Drawings 7 10 11 483 188 12 41 wee vn au abl ETG vata won ar sre on meo se socer mem ae USTWLSN 544113 5310 08 09 corsa osa 08 08 081 991 uten wa en
12. ox tives zum ass 0609 0209 Fus mm 9 dAV 31 351 Wy 3udd 2 55 415 XVOD ASI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 25 Cu i 8 amt an 930 03595 01 Rev J Receiver RF Module 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 26 amo ino zr xc umo nz09 94 2 umo or or sao 009 794 1 M L NI SATVA ZUSE eu men 3 1931 N NWA DER o hue 1 TVB 9 ov A f v r ZU 1 A A dtc MA 2 Te owes 1 og 5 9187375 Rev 6020 Schematic PCL6000 602 13375 01 7 27 e 2 LA O 2 202 220 Z GLE ZZ 222922227772 Z
13. 5 14 Figure 5 8 Test Setup for Distortion Alignment 5 15 Figure 5 9 Stereo Separation Test 5 17 Figure 5 10 Swept Separation 5 19 Figure 5 11 Stereo Crosstalk Setup 5 21 Figure 5 12a Nonlinear Crosstalk Main to 0 5 23 Figure 5 13 Test Setup for FMO 5 31 Figure 5 14 50 Hz iet i oath Da xad 5 45 Figure 5 15 75 us De Emphasis with 30 Hz High Pass 5 45 PCL6000 602 13375 01 Moseley PCL6000 List of Tables Table 2 1 Transmitter and Receiver Fuse 2 2 Table 2 2 Transmitter and Receiver Standard DC Fuse 2 3 Table 2 3 Remote Connector Wiring Guide 2 14 Table 2 4 Channel Control Remote Interface Logic 2 22 Table 3 1 Transmitter Meter Functions and 3 2 Table 3 2 Receiver Meter Functions and 5 3 6 Table 4 1 Transmitter Channel 0 4 11 Table 4 2 Receiver Channel 0 Programming 4 20 Table 5 1 Recommend
14. 01 NOD 780 28 31 181 O OE 03319348 G931N SILON 0909 0009 124 Tee GSNVIEN LON S3LVSKNI Z LHES VI 1109 00 tcu 89 203 5 ILL KING SNOLVINM SV 1 19346 303 0360 61 HOLVNNILLV vo 7 TP 500 3113 ay ort gt al 83 9187451 Rev E Double Converter LO3 6030 Schematic PCL6000 602 13375 01 7 63 6000 FU 20 3039 Double Converter LO3 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 64 03319396 5631 SILON BS oot 12 lt vtl HIONGLE of 1 do 8 Av Sg 2 NI AME VNOR JU 0059 001 ven lt aw xoz Az 20 is IN vD TaN LOK Arit 5 039 pap rit aipH53sHL NO AH 2 ino 210 mmi eu TE DSL A ap Foo MO tL n HAN to LEDE A y p itd lt OLF yG PIGENZ H gon is ven r ASI 20 wt g T fw ob 27001 ES AGLt 89 2 m N
15. IN vD TaN LOK Arit 5 039 pap rit aipH53sHL NO AH 2 ino 210 mmi eu TE DSL A ap Foo MO tL n HAN to LEDE A y p itd lt OLF yG PIGENZ H gon is ven r ASI 20 wt g T fw ob 27001 ES AGLt 89 2 m NOILVTAZA ax 8 4 410 NOLLVIATE 88509 00 d dAri NS AGE Stu 25 2 sit vaere 15 265 85 i 6 on pg Hu YDSENZ 2 s lt ub ES 9 21227 P 4m 4 L r dl 292 7 idl os m BAN 3701 P TAN INIS 40904 XL B 380 2 db pe NEN g 8 i AL 89 DL x elo NF AMMEN 183 00 3 M alt 28 HEIINTI anvassva n 201271907 UTTAMANV ISA 91B7387 Rev F FM Demod 6030 Schematic PCL6000 602 13375 01 Moseley PCL6000 7 31 20B2949 Rev G FM Demod 6030 Assembly PCL6000 602 13375 01 7 32 Schematic and Assembly Drawings 7 2 PCL 6000 330 450 STD NN EE LEVEL DATE Transmiter Fral Assembly
16. Receiver Module Schematic 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 91 8 1 5 E 18 te 8 930 03740 01 9 Receiver RF Module 6020 6030 Assembly PCL6000 602 13375 01 7 92 PCL6000 602 13375 01 Schematic and Assembly Drawings ER f 930 03595 01 4 Receiver RF Module 6060 Assembly 7 93 34035 SINNA SILON SOYUYANDA N SANNA VOLDVOVD N L SEO NI 91D7274 2 Rev J 151 Mixer 6060 Schematic PCL6000 602 13375 01 Moseley PCL6000 wi i 71 FOLVNLLV 39 2002827 Rev P1 Preamp 1st Mixer 6060 Assembly 7 94 oe tle Yn 88 sz B 8 j 47 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 95 6000 LV S AGC Lv omi nlt uno 01095 01340345 JSIMMJHLO SENINA SILON SQVMVAOUOIN SIMY 8019479 fn ERO SANWA WOLSEY I ___ ca 5 1531 10215 7 HND 450 614 OSTWASNI ALEN 41416 009 124 L NI Q3TIVI5NI 07 91B7375 Rev Demod 6020 Schematic PCL6000 602 13375 01 Schematic and Assembly Drawing
17. 62002 08 228 0887 Varer 03184 SILVINI 2130345 S3LVOIONI V BDBMHN ug 2 6700Z SVZIGMHW zHW 096 079 10 9 620 066 V 15 OND mos 010 62 A uapgi AONMS 100 O NI 33i AS Z 4001 Moseley PCL6000 91B7379 Rev C RF Amplifier 950 MHz 6w Schematic PCL6000 602 13375 01 Schematic and Assembly Drawings 7 78 lt G GG Em Z 222 lt K f 3 27 S 930 02936 03 Rev T RF Amplifier 950 MHz 6w Assembly PCL6000 602 13375 01 Moseley PCL6000 7 79 7 aud a 2 a CAUTION HIGH VOLTAGE 21B2891 1 Rev D 6020 Receiver Final Assembly PCL6000 602 13375 01 7 80 Schematic and Assembly Drawings DBL CONVA O3 RF MODULE gt a 21 2892 1 Rev D 6030 Receiver Final Assembly PCL6000 602 13375 01 Moseley PCL6000 7 81 ze 5 a LL 13 MIXER DBL CONV LO3 AUDIO PWR SUPPLY 21B2915 Rev D 6060 Receiver Final Assembly PCL6000 602 13375 01 7 82 Schematic and Assembly Drawings e T 1 gt gt gt gvu d ni 335 52 sis 5 ER zz ds OH T4 8 8 3 7
18. SVE RI 6 eu BPLI 08 Bl lt 001 awa vel ozu eu 600 10227 01 Transmitter RF Module Schematic 2 4 PCL6000 602 13375 01 m hi 03192365 55334 SILON Wd 5071 UN 5 898 13 188 OI EXEC 381 1631 19139 191310 4012 1012 862 882 540 5 SV ugpopt 01 804 1931 NI 193135 288 Q3TWIBNI LON IN oor wm s moszz fo m ees fann iw m sumo oez o ocr 0 3 an aeeoe zoe om Dre oorr ores 969 ese bros mor age ones nee 224 ves pror ve A 096 008 210 ord olg ig 1 3 d ps WEI Moseley PCL6000 PCL6000 602 13375 01 600 10227 01 REV H Transmitter RF Module Schematic p 3 of 4 Schematic and Assembly Drawings 7 42 zu 483 188 12 41 wee vn au abl ETG vata won ar sre on meo se socer mem ae USTWLSN 544113 5310 08 09 corsa osa 08 08 081 991 uten wa
19. 6000 S3IQN 50 C 30 1 IDvd 335 92 022 021 001 1b PCL6010 Transmitter Block and Level 9241319 A Sheet 2 of 2 Figure 1 PCL6000 602 13375 01 RAGAN ee E TEES sene im s 0209 104 77 73431 0078 4 o VIIKS ZC V 15982 NWNUSVO LLL 107191017199 System Characteristics PI cd X29194 fa TI 99 01 PL 4096 791 00 0 0 2 096 uzc cx Jra 001792735 Rd 0267 081 1 14 43110346 3SIA2J3H1O SSTINN SALON TINNVHOLTNN VOJ 10 58101 09 WV T 15 4 ZHOL L HNOGL 5 00 v a Figure 1 2 6020 Receiver Block Level 9241320 Sheet 1 of 2 PCL6000 602 13375 01 3196 suci 983 OCS 70 z 13316 ia TIVES LON OG 0209 5 S310N 804 2 40 30vd 335 J3A31 9 M90 18 IT OLD X XXX 70607 1166 VO 913700 YO 111 1 15 DAN 9 sz ZL 114405 YIMOd GCIGNV TANVd l1NO3 6000 Figure 1 26 PCL6020 Receiver Block and Level 9241320 Sheet 2 of 2 PCL6000 602 13375 01 System Characteristics 1 16 NON vor Jans DD V 4251956
20. Br 000 203 5 10 u 81 01 J a cud eo VS 93 20 SV TEVd SUOIVNOSXU INNEN 600 10227 01 Transmitter RF Module Schematic 2 4 Or 55 IN N Schematic and Assembly Drawings 7 74 Zd Id T DE 0339356 553741 SILON 9 038 SV 1401 1531 NI 193136 89315 93 y sant h wm fons w NLS 193 5 SV 5314 1869 4 21 1531 4537136 WV QO3TNISNI LON IN w sanz mme 88 a oo s fader 051 ove sais sere rosam oct se wu sse mene WIR en 101 3311 01 lt A D 100 A IE 3 G 9 OSI lt A 082 3 gt momoi de AS z 8 R 5 ISU 1558 4 gi 29182 7 ASE AU 600 10227 01 REV H Transmitter RF
21. RF Amplifier 220 MHz Schematic PCL6000 602 13375 01 Moseley PCL6000 7 13 2083037 Rev RF Amplifier 220 MHz Assembly PCL6000 602 13375 01 PCL6000 602 13375 01 Schematic and Assembly Drawings 2 2 lt RF MODULE IF DEMOD 21B2891 Rev D 6020 Receiver Final Assembly 7 15 Moseley PCL6000 AlddNS 21B2892 Rev D 6030 Receiver Final Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 16 3 2543 5 SEIINN SALON SIVAN IN SIVA SIKILUNGVO 913 TG 13 YAT DU VO 5 ASIt lt AGI be kk amas 1 99 E q 9 2 0 e 9 e 9 8 9 AD 5 2 64 We aaa 1 co b 43130 600 10710 01 Receiver Audio Power Supply Schematic 1 of 4 PCL6000 602 13375 01 7 17 6000 JON ot Tina 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 18 NI QNV83SV8 ALISOdNOS SILON 804 40 I 30Vd 388 su J Dvd 587 NI NMDHS IN 338 tou 600 10710 01 Receiver Audio Power Supply Schematic p 3 of 4 PCL6000 602 13375 0
22. If the RF module is being used as a stand alone the frequency is set by the values of switches S1 S2 S3 and S4 The output frequency is determined by adding the resultant frequency values set by each switch S4 1 is a one bit switch that sets 64 MHz 51 S2 and 53 are four bit switches set to a hex value 0 1 2 3 4 5 6 7 8 9 A B C D E F where corresponds to 10 15 The transmitter frequency example below illustrates the math Receiver 2nd LO frequency example lst LO 1020 000 2 Carrier Freq 950 000 lst IF Freq 70 000 MHz lst IF Freq 70 000 MHz 2nd IF Freq 10 700 MHz 2nd LO Synth 80 700 MHz SWITCH SETTINGS S4 1 1 X 64 64 000 MHz S1 4 X 4 16 000 52 2 25 500 53 8 025 0 200 80 700 MHz Note See section 5 3 9 for changing the STL frequency in the field 4 3 2 2 1st Local Oscillator 950 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 2 TX Module for a detailed circuit description PCL6000 602 13375 01 4 3 2 3 1st Local Oscillator 220 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 3 TX RF Module for a detailed circuit description 4 3 2 4 1st Local Oscillator 330 450 MHz The receiver 1st LO is identical to the transmitter 1st LO circuit See section 4 2 2 4 TX RF Module for a detailed circuit description 4 3 2 5 1st Local Oscillator 1 7 GHz The 1st LO signal
23. VED 5 5 5 5 5 5 6 6 5 5 9 31334898978 911112 D 02 ra JUNPER E12 E13 E14 E15 1 RESISTOR VALUES ARE IN 5 1 4W 2 CAPACITORS VALUES ARE IN MKCROFARADS NOTES UNLESS QTHERWSE SPEGIFIED FLAGS TMS 2 FOR OPTION 600 10710 01 Rev B Receiver Audio Power Supply Schematic 1 of 4 PCL6000 602 13375 01 7 83 6000 n SIH DOV am 0 110 33 2 4 523 528 asm A 3 Emm 4 7 A ver 3 428 24 Es 2 21901 JINA gI iz i d DOCU Hu A xz 8 59 ou 6000 602 13375 01 600 10710 01 Receiver Audio Power Supply Schematic 2 of 4 7 84 COMPOSITE BASEBAND PCL6000 602 13375 01 Schematic and Assembly Drawings SEE PAGE 1 4 FOR NOTES SHOWN IN POSITION FLACS THIS PAGE 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 3 of 4 Moseley PCL6000 7 85 qt WR 8 Be 5 552 5 i 1 600 10710 01 Receiver Audio Power Supply Schematic p 4 of 4 PCL6000 602 13375 01 7 86 Schematic and Assembly Drawings T nr io i ud ml T i SEL 20B3024 Rev Receiver Audio Power Supply Assembly PCL6000 602 13375 01 7 87 701
24. active 1 ON not used Sets 64 MHz bit on for frequency selection 1 ON Sets 4 MHz step HEX switch functions as follows 0 0 MHz 1 4 2 2 8 MHZ E 56 MHz F 60 MHz Sets 250 kHz step HEX switch functions as follows 0 0 kHz 1 250 kHz 2 500 kHZ E 3 5 MHz F 3 75 MHz Sets 25 kHz step HEX switch functions as follows 0 0 kHz 1 25 kHz 2 50 kHZ E 350 kHz F 375 kHz Moseley PCL6000 5 45 5 5 Test Fixture Diagrams The test fixtures shown in Figures 5 15 and 5 16 have been designed to interface with the equipment specified in Table 5 1 296uF 10 OUT Figure 5 15 50 Hz High Pass Filter IN 12K 0068uF OUT MD1045 Figure 5 16 75 us De Emphasis with 30 Hz High Pass Filter PCL6000 602 13375 01 5 46 Alignment This page is intentionally blank PCL6000 602 13375 01 Moseley PCL6000 6 1 6 Customer Service 6 1 Introduction Moseley Associates will assist its product users with difficulties Most problems can be resolved through telephone consultation with our technical service department When necessary factory service may be provided If you are not certain whether factory service of your equipment is covered please check your product Warranty Service Agreement Do not return any equipment to Moseley without prior consultation The solutions to many technical problems can be found in our product manuals please read them and become familiar with your equipment We
25. Composite PCL6000 602 13375 01 2 16 SHELDED TWISTED PAIR PCL6000 602 13375 01 FOR PINOUT SEE TEXT FOR PINOUT TRANSMITTER A PROGRAM SOURCE Figure 2 9 Main Standby Transmitter Interconnect Mono Installation gt lt N TRANSMITTER Moseley PCL6000 2 17 29 2 Receiver Interconnect Other STL Receivers The PCL6000 receivers may be used with other Moseley STL receivers such as the PCL505 and PCL303 be used a main standby configuration provided that a TPR 2 is used to perform the switching between the two receivers A typical installation is detailed in Figure 2 10 Note that only one multiplex output can be used from the receivers however there are two parallel multiplex outputs on the TPR 2 to provide the control and secondary audio multiplex outputs OUTPUTS EMR 8 ARM B 45 END a a e B PRDORAN INPUT IN GND N OUT OND DUT 55555 i popek E 5 SOUELCH NUTE RELAY CLOSED IF OPERATONAL ANTENNA MD1030A Figure 2 10 Main Standby Receiver Interconnect Other STL Receivers PCL6000 602 13375 01 2 18 Installation 29 3 Receiver Interconnect PCL6000 606 600 Composite PCL6000 PCL606 and PCL600 receivers used in a main standby configuration can be interconnected to perform automatic switchover if detectable failure occurs in the on line receivers A
26. The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal 96 250 MHz nominal is temperature stabilized by 65 proportionally controlled oven Oscillator buffers Q6 and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedance matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X2 multiplier C98 C99 and the 12 nH printed inductor The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to an LC output circuit L16 and C101 which is tuned to the desired output frequency The multiplier output is routed through an external three pole helical filter and is tuned to the LO output frequency 385 MHz nominal The output is terminated into a 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 2 2 5 Up Converter
27. gt 9 5 2 o amp RX AUDIO POWER SUPPLY 910 08796 01 Rev B PCL 6030 Multichannel Option PCL6000 602 13375 01
28. i isse wa 0709 12 TA31 018 4 010 FXXX OLD 406 anv 913109 Hi 01 10 8101 108 nau TT 24 is lt SUNN 232 lt VIN EE TRES d dNV ASSV ON3G HAL EL 201 wee 201 r lt P as 348 390 U3XIN ASSV 1 1 180 0 24 W1 201 23 ry q AS 4 24 Ea 349 j I am 03152395 5 5539740 55319 709 TINNVHILTNN 803 10 69101 Ad cd ps o uy me 83114 01 108 ODO 3438 WV A PCL6030 Receiver Block Level 9241327 Sheet 1 2 1 PCL6000 602 13375 01 1 17 6000 v 0509 194 VET 13 31 2018 1146 913095 lt LLL BNVd 1 3 AlddhS 3MOd Ol nv ew ONON EJ NOS 31509 05 SIAN 304 2 1 335 BLA DE 92 21 11481 20 ovt oze ozt oat 3b PCL6030 Receiver Block and Level 92A1327 R A Sheet 2 of 2 Figure 1 PCL6000 602 13375 01 System Characteristics 1 18 Taste wa ug 0909 194 femma 13131 201
29. 1 2 MHz dB IF bandwidth 90 kHz 80 dB IF bandwidth 1 2 MHz 3 dB IF bandwidth 100 kHz 80 dB IF bandwidth 1 0 MHz 10 wide band 20 dBc narrow band 10 dBc 3 5 Vp p 200 ohm unbalanced Frequency range 30 2 80 kHz Moseley PCL6000 1 5 2 BNC connectors parallel connection Monaural 10 dBm 600 ohms balanced Frequency range 30 Hz 15 kHz Barrier strip connector 1 5 100 ohm unbalanced Frequency range 85 200 kHz 2 BNC connectors parallel connection Power AC 100 120 220 240 VAC 10 50 60 Hz 30 Watts Power DC Options Isolated ground factory standard Chassis negative ground user selectable 10 20 VDC 30 watts 18 36 VDC 30 watts 36 72 VDC 30 watts Dimensions 3 5 8 9 cm high 19 0 48 3 cm wide 16 5 41 9 cm deep Shipping Weight 12 7 kg 28 Ib domestic 1 4 System Description 1 44 PCL6010 Transmitter The PCL6010 Transmitter is a high fidelity broadband FM transmitter with a power output of 5 15 watts depending on frequency and system configuration It is capable of transmitting the program signal and two multiplex subcarriers with little degradation of signal quality over one link The linearity and FM noise characteristics of the direct FM oscillator are exceptional The transmitter is modular in construction and operation and the system description given below follows the signal flow through the various modules Refer to Figures 1 1a
30. 500F9 Moseley PCL6000 1 3 2 PCL 6020 PCL6030 PCL6060 Monaural System Frequency Range Frequency Response Distortion THD and IMD PCL6020 PCL6030 6060 Signal to Noise Ratio PCL6020 PCL6030 6060 Operating Temperature Emission 148 174 MHz 215 240 MHz 300 330 MHz 440 470 MHz 890 960 MHz 1 5 1 7 GHz t 0 3 dB or better 30 2 15 kHz 0 2 or less 30 Hz 15 kHz typically better than 0 1596 at 1 kHz 0 1 or less 30 Hz 15 kHz typically better than 0 1096 at 1 kHz 72 dB or better typically 75 dB Referenced to 10096 modulation 75 or better typically 77 dB Referenced to 10096 modulation 20 C to 70928 110F3 no subcarrier 110F9 with 26 kHz control subcarrier 230F9 with 67 kHz program subcarrier 1 3 3 6010 Transmitter Specifications RF Power Output 800 960 MHz 148 470 MHz 1 5 1 7 GHz RF Output Connector Deviation 100 Modulation Composite Monaural Frequency Stability Spurious amp Harmonic Emission Modulation Capability Modulation Inputs Composite Solid state Direct FM Frequency synthesized Crystal referenced 6 watts minimum 8 watts maximum 10 watts minimum 15 watts maximum 5 watts minimum 7 watts maximum Type N Female 50 ohm 50 kHz 40 kHz Better than 0 00025 2 5 ppm from 0 to 50 More than 60 dB below carrier level One program and two subcarrier channels 3 5 Vp p 6 Kilohms unbalanc
31. Alignment PCL6000 RF SIGNAL GENERATOR SWITCHABLE ATTENUATOR DIRECTION AL COUPLER LOAD ATTENUATOR AUDIO OSCILLATOR CAUTION Place the transmitter RADIATE STANDBY switch in STANDBY until the coupler and attenuator are connected CAUTION Ta ava d receiver damage initially set MD1D38 ottenuator far maximum attenuation Figure 5 6 Test Setup for MUX Channel Alignment On the RF signal generator adjust the modulation frequency to 67 kHz and the FM deviation for 6 0 kHz Note the reading on the receiver meter It should be between 6 and 8 on the lower scale This reading will be used as a reference to align the transmitter MUX 2 deviation Connect the output of the adjustable attenuator to the RF input of the receiver Position the transmitter OPERATE STANDBY switch to the OPERATE position Using the scope adjust the output of the audio oscillator for a voltage of 1 5 Vp p and a frequency of 110 kHz 26 kHz mono Connect the audio oscillator output to the MUX 1 input of the transmitter Adjust the MUX 1 Level Adjust R29 on the Audio Power Supply board for a reading of 5 on the lower scale of the receiver meter Using the transmitter METER FUNCTION switch select the MUX LVL position Adjust R159 on the TX Audio Power Supply board for a reading of 5 on the meter lower scale Connect the audio oscillator to the transmitter MUX 2 input and adjust the oscillator to a frequency of 185 kHz
32. NOTE Any user adjustments to the AFC level in the RF module and or the IF filters in the IF strip will change the factory presets for the existing programmed channels Re adjustment can be very difficult to achieve Consult the factory for best results Table 5 3 Synthesizer Frequency Selection Switch Settings 0 OUV gt 0 o OQ OUV P o 0 1 2 3 4 5 6 7 8 9 A B C D E F PCL6000 602 13375 01 Moseley PCL6000 5 31 5 3 10 FMO Adjustment RF SIGNAL GENERATOR RF SPECTRUM RF IN 01044 ANALYZER EE Figure 5 14 Test Setup for FMO Adjustment Procedure 1 a Connect the equipment as shown in Figure 5 14 b Using the counter measure the output frequency of the FMO For a High Side LO LO gt CARRIER frequency LO CARRIER freq For a Low Side LO LO CARRIER FMO frequency CARRIER freq LO freq Note If the frequency is greater than 10 kHz away from the desired frequency remove the top cover and position frequency selector switches 54 1 51 S2 S3 for the desired frequency 2 Adjust the 1st LO XTAL tuning capacitor C84 so that the counter reads the desired frequency Note the LOSS OF LOCK is red it will be necessary to first adjust the AFC level to accomplish this step See Step 4 below 3 Reconnect the FMO output to the RF input of the mixer Adjust the controls on the RF signal gener
33. 1 XN3 BNS ZHN 022 SNS SSVGAB XVOD NHON3Z 21 8 N N THN 096 008 11 cu 6 wu 0 lt me me 080 m mc mm me 090 gt sem ons HILYIANDJIdN 9 170 088 008 To Ta axz 1993 187 1931 8 27897897X E E TN Vd 4 ZHN 022 W POL Dev azt 55 xvaa 057 075 600 10227 01 Transmitter RF Module Schematic 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 11 P i 5 930 03462 01 Transmitter RF Module Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 12 2 HD 3901 9 80 28409 dH 3 2 3418 re 10 KKIZ T d 100z lt an 51 19 LO00Z E 831402345 3SIMHIHLO 5531 1 SILON 34V SANIVA HOLPVdVI XS AP l SXYNA 0156535 L LN LN A Rate 82522 Ive u 1 55 er 2 5 sls sl 5 IDE Vt I 5 z i o 2019 8 9 mm 5 22 una 9 9147456
34. 2206050 rosam owoce OS cox c 886000 256 092 A A A S A oJ 8 8 r 28 5 95 2 600 10228 01 Receiver RF Module Schematic p 3 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 58 SS re m sex fv wwe w Eus un mom move z ser oser 99 09 IN 88948 zu ozz IN HH S amp VdA8 Y N s ox tives zum ass 0609 0209 Fus mm 9 dAV 31 351 Wy 3udd 2 55 415 XVOD ASI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 59 s 8 J 930 03454 01 330 450 Receiver RF Module 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 60 03149345 5531 SILON NI S3mv
35. LVL RFLVL TRANSFER 45V 15V OPERATE 15V MUX LVL AFC LVL LO1 LVL LO 2 LVL AFC LOCK SIGNAL Figure 3 5 PCL6020 Receiver Front Panel Standard MD1140 PCL 6030 Aural STL Receiver TRANSFER OPERATE AFC LOCK SIGNAL 451133 3 6 6030 Receiver Front Panel Standard 2 PGM LVL LVL AFC LOCK SIGNAL PCL 6060 Aural STL Receiver NA LO1 LVL eo 7 ax LO2 LVL e 52 ux LO3LVL 2 3 7 6060 Receiver Front Panel Standard PCL6000 602 13375 01 MD1139 3 6 LO1 LVL LO2 LVL LO3 LVL PGM LVL MUX LVL LVL 5 15 V 15 V Operation Table 3 2 Receiver Meter Functions and Scales Logarithmic Center Arc Center Arc Center Arc dB Linear Center Arc Linear Linear Linear Microvolts Relative Relative Relative dB kHz Relative Volts Volts Volts signal level at receiver input First Local Oscillator relative level calibrated to center Second Local Oscillator relative level calibrated to center PCL6030 6060 ONLY Third Local Oscillator relative level calibrated to center Peak program meter 0 dB 3 5 Vp p 100 modulation Subcarrier deviation AFC voltage relative level calibrated to center Power Supply Power Supply Power Supply Figure 3 8 depicts the basic shap
36. RECEIVER RF OUT DIRECTIONAL COUPLER ATTENUATOR CAUTION Place the transmitter RADIATE STANDBY switch in STANDBY until the coupler and attenuator are connected MD1034 Figure 5 1 Test Setup for Frequency Alignment Troubleshooting 1 5 The crystal in the transmitter 1st LO should be to 102 000 MHz for the 950 MHz band refer to system data sheet to determine exact frequency of your unit The crystal frequency of the receiver 1st LO should be the same as the PCL6010 transmitter 1st LO except in the 1 7 GHz band check the system specs If the 1st LO fails to meet the 8 kHz specified in this procedure the crystal oven should be checked to ensure that it is operating at 65 C 5 C If the transmitter frequency fails to meet the 8 kHz specified in this procedure and the 1st LO appears to be operating to specification the FMO should be checked to ensure that it is operating at its designed frequency The frequency may be calculated as follows For a High Side LO LO gt CARRIER FMO frequency LO freq CARRIER freq For a Low Side LO LO lt CARRIER FMO frequency CARRIER freq LO freq The frequency should be within 1 kHz of the value calculated red AFC LOCK status will cause the RADIATE status indicator to remain red Multichannel Option The FMO and 2nd LO are aligned for exact frequency operation within 200 Hz of the indicated synthesizer switch set
37. SIVA SIKILUNGVO 913 TG 13 YAT DU VO 5 ASIt lt AGI be kk amas 1 99 E q 9 2 0 e 9 e 9 8 9 AD 5 2 64 We aaa 1 co b 43130 600 10710 01 Receiver Audio Power Supply Schematic p 1 of 4 PCL6000 602 13375 01 7 51 6000 JON ot Tina 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 52 NI QNV83SV8 ALISOdNOS SILON 804 40 I 30Vd 388 su J Dvd 587 NI NMDHS IN 338 tou 600 10710 01 Receiver Audio Power Supply Schematic p 3 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 53 sun zu 4 258 a Bs KAN AAA Sore 4 8 E 5 s gt gH i 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 PCL6000 602 13375 01 7 54 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly PCL6000 602 13375 01 7 55 6000 THOIS SSIINN 53 00 ADS SOVAVJOMIM NI SITWA IILDVAVD XE 9 1 SNHQ NI SJNTVA MDISISZU L ole OL L ud O
38. d ou d ud m a sus 5 5 1 wid HiB d KUNN T n 158 ES ci 273 3 eren ur Ni mon 1 zd 04 0 19015 _ D 9187444 Rev Transmitter Audio Power Supply Schematic 1 of 3 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 106 9310 803 30 1 3804 335 1 2 Vd 1304 1388 ba LOW 1 t 60 Val 5 ASi 1d AINAN 2222 4 Vd vL TUNGA 1 va COLT mv BAD dans ov n L AIBW3SSV VB 91B7444 Rev B Transmitter Audio Power Supply Schematic p 2 of 3 PCL6000 602 13375 01 6000 7 107 33 4 5 led 28 Ep 4 25 91 7444 Transmitter Audio Power Supply Schematic p 3 of 3 PCL6000 602 13375 01 7 108 PCL6000 602 13375 01 77 PE 23 ARRET T a top on OE Sy AMT lus m 26 L 90 0 20 20 SEE 1 8 2083023 Rev D Transmitter Audio Power Su
39. 1 1 Introduction The PCL6000 Studio to Transmitter Link STL is designed to convey FM program material from a studio site to a transmitter site The PCL6000 also simultaneously conveys control and secondary programming subcarriers This equipment may also be used to provide high quality program transmission in intercity relay service The PCL6000 series is a family of equipment that can operate in several bands from 150 MHz through 1 7 GHz This operating manual covers the 220 MHz 330 MHz 450 MHz 950 MHz and 1 7 GHz bands of operation and the various configurations in those bands 1 2 System Features In addition to establishing a new industry standard for performance the PCL6000 incorporates many new and innovative features to aid in the installation operation and maintenance of a system Some of the features are Very low distortion ceramic IF filters offering unprecedented selectivity Peak reading meter for all major functions Two decade logarithmic true signal strength meter Important status functions implemented with bi color LED indicators Designed to have a minimum of adjustments for trouble free operation Modular construction that provides excellent shielding and at the same time allows easy access to components Multichannel Option Up to sixteen pre programmed channels available with remote operation capabilities NOTE Please study the manual at least through Section 5 before attempting to instal
40. CHANNEL 0 is provided as user programmable channel for backup or testing purposes This channel is set in the factory to duplicate CHANNEL 1 To set new channel frequency see Section 5 3 Alignment Procedures or contact the Moseley Technical Services Department 3 3 3 2 Remote Control Operation The channel selection function of the Multichannel receiver can be accessed via the back panel connector marked REMOTE The schematic diagram of the 9 pin D connector and the required interface logic is shown in Figure 2 14 and Table 2 3 Additionally the 5 position INTERNAL REMOTE dip switch SW6 on the Channel Control board must have all switches in the OPEN or 1 position for proper remote control operation The front panel CHANNEL display will indicate the current remote control state of the transmitter with a red light in the upper left corner RMT The displayed channel number represents the actual channel the transmitter is operating in The SELECT knob will have no effect on the PCL6000 602 13375 01 Moseley PCL6000 3 9 transmitter in this mode But the position of the SELECT knob retains its memory Changing the knob position will change the channel the transmitter will return to if the REMOTE ENABLE line is disabled 3 3 3 3 Front Panel Control LOCKOUT Operation To prevent unauthorized or accidental changing of the channel via the SELECT knob the front panel can be locked out by programming the 5 pos
41. Demod Level Test Point A DC test point with a voltage proportional to the frequency of the MHz IF Normally this voltage is between 4 and 6 VDC Mute Threshold Indicator LED Indicates status of mute logic red mute Mute Threshold Adjust Adjusts the mute logic threshold threshold 20 mV input signal with RF gain at 15 on receiver meter Baseband Level Adjust Adjust the output of the baseband including the composite and levels 250 kHz deviation wideband or 235 kHz deviation narrowband 3 5 Vp p Baseband Level Test Point An ac test point used to monitor the output level of the baseband processor 50 kHz deviation wideband or 35 kHz deviation narrowband 3 5 Vp p 5 4 11 Adjacent Channel Filter PCL6060 COMP MONO SELECT E1 E2 Selects proper filter for intended system application Composite or Mono 5 4 12 Channel Control Board Multichannel Option CHNL SELECT S1 FIX LED CR1 F2 LED CR2 F1 LED CR3 MOD LED CR4 MOD LED CR5 LED CR6 TEST MOD LVL ADJ R12 Front panel select control Selects channels 0 15 LED indicates EPROM output bit C5 FIX capacitor in RF Module is active LED indicates EPROM output bit C4 F2 capacitor in RF Module is active LED indicates EPROM output bit C3 F1 capacitor in RF Module is active LED indicates EPROM output bit C2 MOD1 adjustment is active LED indicates EPROM output
42. This voltage is reduced to 1 5 VDC if the AFC loses lock or if the transmitter is placed in STANDBY see section 4 2 1 3 The rectifier and regulator for the 12 5 VDC supply are mounted on the RFA heat sink Capacitive ripple filters C6 C7 C8 are mounted on the board and accessed through connector P2 The regulated 12 VDC is used to power the crystal ovens for the 1st LO and FMO reference oscillator crystals WARNING Failure to ground the third lead of the input power cord may result in hazardous shocks to personnel The AC power connector includes an filter The transformer primary windings support the four selectable input voltage ranges 100 120 220 and 240 VAC Operating voltage is selected by programming the line filter fuse holder on the rear panel as described in Section 2 2 1 AC Line Voltage Selection 4 2 1 2 Power Supply DC Option The transmitter can be optionally configured as DC input only system All DC systems be input isolated for negative DC operation Jumper E1 on the DC Option Power Supply assembly PS1 selects negative chassis ground factory standard or isolated ground The back panel has PCL6000 602 13375 01 a barrier strip for the DC input is fused The value of the fuse and the system ground configuration is listed on the back panel The Audio Power Supply board is modified by bypassing the bridge rectifier and the 15 VDC regulators VR1 and VR2 The DC input fro
43. harmonic spurious content 2 65 dBc 5 Maximum final current must be 1 7 amp 5 4 4 4 Alignment Procedure 220 MHz 1 Measure input level at the RFA It should be 20 dBm 100 mW nominal If power level is low peak the external RFA filter 2 Connect RFA output to power meter and spectrum analyzer using appropriate high power attenuator dummy load 3 Connect input and adjust C701 C703 and C707 for max output power Adjust C712 and C713 for maximum output power minimum final stage current and harmonic spurious content 2 65 dBc 5 Maximum final current must be 1 7 amp 5 4 4 5 Alignment Procedure 1 7 GHz CAUTION Do not attempt to adjust this RFA Call the factory for any technical problems encountered with this module 5 4 5 Receiver Audio Power Supply AUDIO PROCESSOR COMP MONO SELECT Jumpers E1 E4 E5 E6 E7 E8 E10 select proper audio processing and MUX filter bands for either composite or monaural operation PCL6000 602 13375 01 6000 COMP FILTER E9 COMP HF TILT R7 MONO HF TILT R208 COMP LF TILT R61 DELAY EQ 111 5 39 Jumper E9 bypasses the composite low pass filter and delay equalizer OUT position for digital STL applications see DSP6000 manual for further details High frequency tilt adjustment composite Compensates for the high frequency roll off caused by the IF filtering High frequency tilt adjustment monaural Compensates for th
44. 096 008 11 cu 6 wu 0 lt me me 080 m mc mm me 090 gt sem ons HILYIANDJIdN 9 170 088 008 To Ta axz 1993 187 1931 8 27897897X E E TN Vd 4 ZHN 022 W POL Dev azt 55 xvaa 057 075 600 10227 01 Transmitter RF Module Schematic 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 113 P i 5 930 03462 01 Transmitter RF Module Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 114 03 17395 553101 SALON A Bal jm fer 5080 50 NI S3ITIVA 301210 5080 NI gt SANWA SOLEO ws OAS 9021 S vuvJOWON 389 F lt S3YWA SOLON s 20 9 ez 8080 9 1 S3ITWA MOISSY L MAJ TIVLSN 3 AINO AL TIVLSNI ML C 28 0 LIE 385 it gu 43 EN AING L 804 311 15 sl Mel mL elemen sd c os 1s s s IN du T pp 12 29
45. 1000 The use of a power divider is recommended so that the impedance as seen by each receiver is approximately 50 ohms The mono and mux outputs are paralleled using a BNC Tee connector This is permissible since the mono and multiplex outputs are switched internal to the receiver Only one of the receivers at a time will have any output The interlock control is achieved by first interconnecting the ground GND on the two receivers Then XFR IN of each receiver is wired to XFR OUT of the other receiver GND XFR IN and XFR OUT are located on the barrier strip on the rear of the receivers RECEIVER REMOTE eldste ND1032A REGEIVER B Figure 2 12 Main Standby Receiver Interconnect PCL6000 Mono 2 10 Remote Control of the STL Transmitter The PCL6010 transmitter has been designed to be operated by remote control Radiate standby control capability as well as metering outputs for power and AFG are built in Figure 2 13 shows PCL6000 602 13375 01 2 20 Installation the back panel connector schematic that is required for remote control interface with the transmitter Figure 2 13a is the pin out for revision A transmitters using the circular 9 pin connector Figure 2 13b is the pin out for revision B and later transmitters using the 9 pin D female connector RM 1 GND
46. 220 SUBCARRIER 1 MULTIPLEX UUTPUTS MUX 2 STL RECEIVER NOTES 1 CONTROL SUBCARRIER DEMODULATOR MAY BE PART OF REMOTE CONTROL SYSTEM 2 COAXIAL CABLE 15 RG 58 A U OR EQUIVALENT MD1266A Figure 2 7 Receiver PGM and MUX Interconnect Mono The secondary program audio on the STL 185 kHz subcarrier is fed to the subcarrier demodulator The baseband audio is passed to 5 generator at 67 kHz the normal SCA program carrier which in turn is fed to the main transmitter multiplex input The multiplex outputs may also be fed to the control subcarrier demodulator for use by the control system Some control systems such as the Moseley MRC series have their own internal subcarrier demodulation capability and an external demodulator is not required Note that since both multiplex outputs contain the same 85 kHz to 200 kHz 20 kHz to 85 kHz mono spectrum the subcarrier demodulators are required to further filter the spectrum as required for their individual purposes 2 9 Main Standby Interconnect The PCL6000 transmitter and receiver can be interfaced with other PCL6000 PCL606 PCL505 or PCL303 systems to form redundant backup system that provides for automatic changeover between equipment in the event detectable failure occurs The Moseley model 2 is used to accomplish automatic switchover for transmitters in all combinations The model TPR 2 Transfer Panel Receiver is req
47. 4 4 000 52 25 2 500 53 0 025 0 000 70 500 MHz Note See section 5 3 9 for changing the STL frequency in the field 4 2 2 2 1st Local Oscillator 950 MHz 1 7 GHz The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal Y1 102 000 MHz for 950 MHz 92 MHz for 1 7 GHz is temperature stabilized by a 65 proportionally controlled oven HR1 Oscillator buffers and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedance matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X5 multiplier C98 C99 and the 12 nH printed inductor The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to an LC output circuit L16 and C101 which is tuned to the desired output frequency The three pole helical filter FL10 is tuned to the LO output frequency 1020 MHz PCL6000 602 13375 01 nominal for 950 MHz 920 MHz nominal for 1 7 GHz The output is terminated into a
48. 60 dB point Position OUTPUT LEVEL on the signal generator to 40 Increase the frequency on the signal generator until the meter reading on the receiver front panel is the same as the value noted in paragraph 3 Subtract the carrier frequency from the value indicated on the signal generator The value calculated indicates the positive 60 dB point Decrease the frequency on the signal generator until the meter reads the same as the value noted in paragraph 3 Subtract the frequency indicated on the signal generator from the center frequency This value indicates the negative 60 dB bandwidth point PCL6000 602 13375 01 5 8 Alignment 6 The bandwidth calculated in steps and 4 should be no greater than 400 kHz Specification PCL6020 Bandwidth 1st 10 7 MHz IF 2nd 10 7 MHz IF 90 KHz 1 5 2400 2 30 60 Specification PCL6030 6060 Bandwidth Wideband 60 dB 450 kHz 350 kHz Note The Wideband Narrowband filter bandwidth can be selected in the PCL6030 6060 system by properly positioning jumpers 2 in the Double Converter LO3 module Troubleshooting Notes The cable between the RF signal generator and the receiver should be kept at a minimum to reduce insertion loss As an example a 3 foot cable RG 58 will cause a 1 dB or 10 loss in signal at 950 MHz 5 34 Transmitter Deviation and Receiver Output Level Calibration Description The deviation and modulation sensitivity of
49. Chain 950 MHz The Up Converter Chain consists of a mixer high gain amplifier and filters The mixer HY1 translates the signal 60 80 MHz up to the carrier frequency 950 MHz The mixer is double balanced for LO rejection and the conversion loss is 8 dB The Intermediate Power Amplifier IPA is a four stage broadband RF amplifier AR2 AR3 AR5 with 30 dB of gain and an output power of 16 dBm FL12 is a two pole helical filter that prevents intermodulation in the IPA FL11 is a three pole helical filter that provides the necessary PCL6000 602 13375 01 6000 4 7 spurious rejection for the RF module The output stage AR5 operates compression to minimize any changes in gain over a wide temperature range An output power detector C124 CR16 R85 C125 is provided for the IPA Relative power is detected and relayed to the Audio Power Supply board This voltage should be approximately 2 volts The output of the RF module is sent through an external three pole helical filter before being applied to the RFA to further reduce unwanted spurious emissions see system block diagram in Section 1 4 2 2 6 Up Converter Chain 220 450 MHz The Up Converter Chain consists of a mixer high gain amplifier and filters The mixer HY 1 translates the signal 60 80 MHz up to the carrier frequency The mixer is double balanced for LO rejection and the conversion loss is 8 dB The output of th
50. Drawings 7 128 3 167 916 Lx rises 01 NOD 780 28 31 181 O OE 03319348 G931N SILON 0909 0009 124 Tee GSNVIEN LON S3LVSKNI Z LHES VI 1109 00 tcu 89 203 5 ILL KING SNOLVINM SV 1 19346 303 0360 61 HOLVNNILLV vo 7 TP 500 3113 ay ort gt al 83 9187451 Rev E Double Converter LO3 6030 Schematic PCL6000 602 13375 01 7 129 6000 FU 20 3039 Double Converter LO3 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 130 03319396 5631 SILON ASL oot 127 wi T lt vtl 1 170 HIONJHIS NI AME 8 ASS 3 ae aw TAT 801 22 4 3 i IN ILON 134 D 2 ang Ee PE oe P 2 E Ded VICE ET ALAN wl 6 0 4 Vb id lt lt gt H Ol vad gon 18 ASI r ur E m 89 5 ne S
51. Log Gain Adjust prior to continuing the test and perform the calibration adjustments given there The PCL6020 system log gain is not adjustable 4 Using the METER FUNCTION switch on the receiver select the PGM LVL position Set FM Deviation on the RF Signal generator to ON Set the modulation frequency on the signal generator to 400 Hz Adjust the deviation control on the signal generator so that the meter on the receiver reads 0 dB on the top scale Verify that the deviation on the signal generator reads 50 1 kHz 5 Setthe controls on the distortion measurement equipment for a 0 dB reference Set the FM Deviation on the RF signal generator to OFF Position the controls on the distortion measurement equipment for a reading of 60 dB SNR Reduce the RF LVL adjustment on the RF signal generator until the distortion measurement equipment reads 60 dB Observe the RF level output of the signal generator it should indicate less than 20 uV 6 Setthe controls on the distortion measurement equipment for a signal to noise ratio of 40 dB Reduce the RF level on the signal generator until the mute threshold LED on the IF Demod PCL6020 or FM Demod PCL6030 6060 module indicates red Observe the RF level output of the signal generator it should indicate between 18 22 uV If not the MUTE THRESHOLD ADJ on the IF Demod PCL6020 or FM Demod PCL6030 6060 module should be rotated fully counterclockwise Then set the RF level output o
52. Module Schematic p 3 of 4 PCL6000 602 13375 01 7 75 6000 184 494 9 111 VU DTE 1 1 om ws se om pacos AON3nD34i HINOLSNI 539 ISA om www 8311 15 349 593113 51915485 ILIN in P Ros MOT a ss s s oum meom E wee wo mom om A IN 1 IN BAS zv us MIXIN MH3ANOSdn ZHN 096 008 wepri WI Vd 988 096 000 1 A 099 050 im 38 zr I d 020 m hs quM 057 052 55938 087 05 PCL6000 602 13375 01 600 10227 01 REV H Transmitter RF Module Schematic p 4 of 4 Schematic and Assembly Drawings 7 76 2 0 Qu LOL DE6 455 E m 86 6 L1C 509 930 03462 01 Transmitter RF Module Assembly PCL6000 602 13375 01 7 77 03150385 5 5531 SALON SOVHVJOHDIN NI SSAMVA SYOLIDVAVO 95 1 SAHO SANA 015634 L
53. Monitor or equivalent Stereo SNR 75 dB Separation 55 dB THD 0 5 or less Stereo Source Moseley custom test equipment Selector Oscilloscope High Freq Scope Probe Tektronix 465 or equivalent Bandwidth 100 MHz Tektronix 100 MHz or equivalent Multimeter Fluke Model 77 or equivalent 50 Hz Filter See Figure 5 15 600 ohm Resistor PCL6000 602 13375 01 N55D6000F 600 ohm 1 1 4W 6000 5 3 5 3 Alignment Procedures The PCL6000 alignment procedures include the following 5 3 1 STL Frequency Alignment 5 3 2 Receiver Sensitivity 5 3 3 Receiver Selectivity 5 3 4 Transmitter Deviation and Receiver Output Level Calibration 5 3 5 Ultimate Signal to Noise Ratio 5 3 6 Distortion Alignment 5 3 7 Stereo Separation and Signal to Noise Ratio 5 3 8 Stereo Crosstalk 5 3 9 STL frequency Change 5 3 10 Adjustment 5 3 11 Transmitter Troubleshooting Procedure 5 31 STL Frequency Alignment Description The STL frequency is aligned by using a counter to measure the transmitter output frequency and the receiver 1st LO frequency A high precision counter 0 2 ppm is recommended to align STL links that are used in a redundant installation If such a counter is not available we recommend that both STL systems be aligned at the same time using the same counter Procedure 1 2 Connect the equipment as shown in Figure 5 1 Position the transmitter OPERATE STANDBY switch to the OPERATE posit
54. RMT FWD PWR 1 EF B C RMT MODE B D RMT RADIATE CTL O D E GND E F RMT FWD PWR 2 H GND J RMT AFC LVL K RMT RADIATE OVERII MD1112 Figure 2 13a Transmitter Remote Connector Pin Out Rev A TX RMT FWD PWR 1 MODE RADIATE CTL FWD PWR 2 AFC LVL RADIATE OVERIDE MD1113 Figure 2 13b Transmitter Remote Connector Pin Out Rev or Later PCL6000 602 13375 01 6000 2 21 2 11 Multichannel Remote Interconnect Option The PCL6000MC Multichannel is equipped with a CHANNEL CONTROL connector located on the back panel of both transmitter and receiver The 9 pin D male connector pin out is shown in Figure 2 14 REMOTE ACTIVE LOW ENABLE GND REMDTE DO D1 CHANNEL DATA LINES D2 ACTIVE HIGH W PULL UPS D3 CHANNEL CONTROL TX RX BACK PANEL MD1130A Figure 2 14 Transmitter Channel Control Connector Pin Out The REMOTE ENABLE line requires a contact closure to GND or logic level 0 low to enable the system for remote operation The remote logic is ACTIVE HIGH with internal pull up resistors and follows a standard BCD input standard utilizing contact closure or TTL logic levels Table 2 4 shows the truth table for channel selection PCL6000 602 13375 01 2 20 Installation Complete operating instructions for the Multichannel System are found in Section 3 Table 2 4 Channel Control Remote Interface Logic
55. Sub to Main Nonlinear crosstalk Measurement of the ratio in dB of harmonic products in the subchannel referred to 15 kHz L R at 100 modulation in the main channel M amp S measurement of the ratio in dB of intermodulation products in the main channel referred to 7 5 kHz L R at 10096 modulation in the subchannel S amp M 5 39 STL Frequency Change 5 3 9 1 Quick Frequency Change Procedure This simplified procedure is intended for users with prior experience in changing STL frequency This guide covers the switch settings for the 950 MHz band products only For frequencies not listed and for all other users refer to the detailed instructions that follow in Sections 5 3 9 2 for the transmitter and 5 3 9 3 1 Remove RF Modules from respective units transmitter and receiver Remove the cover from component side of module 2 Determine the switch settings from Table 5 2 Frequency Selection Chart 950 MHz Band given below and set switches 50 to S3 accordingly on both transmitter and receiver RF Modules PCL6000 602 13375 01 5 24 PCL6000 602 13375 01 944 125 944 375 944 5 944 625 944 875 945 945 125 945 375 945 5 945 625 945 875 946 946 125 946 375 946 5 946 625 946 875 947 947 125 947 375 947 5 947 625 947 875 948 948 125 948 375 948 5 948 625 948 875 949 949 125 949 375 949 5 949 625 949 875 Table 5 2 Frequency Selection Chart 950 MHz band Receiver T T HL
56. Volts 15V Linear Volts 3 2 2 Transmitter Rear Panel RFA Forward Power in dB 0 dB 100 power output Peak Program Meter 0 dB 3 5 Vp p 100 modulation Subcarrier deviation RFA Reflected Power in dB 0 dB 100 reflected power 10 dB to 20 dB safe AFC voltage relative level calibrated to center Local Oscillator relative level calibrated to center Intermediate Power Amplifier relative level calibrated to center RFA final stage current Power Supply RFA supply STBY 1 5 VDC Power Supply Power Supply The PCL6010 transmitter rear panel standard AC power is depicted in Figure 3 2 All of the program inputs COMP MONO and MUX inputs are shown The RF power output is a type N connector TX REMOTE is used for external remote operation and standby transfer interconnections CHNL REMOTE is used for the Multichannel option All of the necessary interconnections are found in Section 2 The fused AC input is line voltage programmable see Figure 2 1 PCL6000 602 13375 01 6000 3 3 FOG ID GSUSWKPCL6010 MOSELEY ASSOCIATES INC lefele ASSEMBLED IN USA 9 01 MUX2 CHNL REMOTE Figure 3 2 PCL6010 Transmitter Rear Panel The PCL6010 transmitter rear panel DC power option is depicted in Figure 3 3 The DC input panel is marked in the factory for the input voltage the internal ground configuration GND for positive DC input ISO GN
57. and 1 1b PCL6010 Transmitter Block and Level Diagram Assembly drawings and schematics for the complete transmitter system and for its modules are located in Section 7 Audio Processor The Audio Processor is located in the TX Audio Power Supply board Three signal inputs are provided to the Audio Processor module one audio composite or monaural signal and two multiplex signals The composite input level is 3 5 Vp p 5 7 kohms mono input level is 10 dBm 600 ohms selectable mux input level is 1 5 Vp p 75 us pre emphasis is selectable The board is jumper programmable for composite mono or digital input operation and level adjustments are provided for all functions Summing amplifiers combine the inputs into a single baseband signal that is passed on to the FMO Synthesizer in the RF module FMO Synthesizer The baseband signal from the Audio Processor modulates the frequency modulated oscillator FMO in the RF module The FMO consists of a 60 80 MHz ultralinear very low noise VCO which is phase locked to a crystal controlled reference oscillator The phase lock loop contains the frequency programming switches which allow the synthesizer to be changed in frequency steps of 25 kHz The RF output of the FMO is filtered to attenuate any harmonics With 100 PCL6000 602 13375 01 1 6 System Characteristics modulation the RF signal will deviate 50 kHz composite or 40 kHz monaural from the carrier The output power of the FMO is
58. and FL 11 for maximum IPA LVL meter reading Peak the external filter FL2 mounted underneath the Audio Power Supply board for maximum FWD PWR meter reading 5b 220 450 MHz band Peak the external helical filter FL4 for maximum IPA LVL meter reading Peak the external filter FL2 for maximum FWD PWR meter reading Check the transmitter assembly drawing to verify the proper filter before tuning 5c 1 7 GHz band The TX RF module operates at one half the carrier frequency i e 850 MHz for 1 7 GHz carrier Peak the internal pc board mounted filters FL 12 and FL 11 for maximum IPA LVL meter reading Peak the external filter FL2 mounted in front of the RFA and part of the doubler assembly for maximum FWD PWR meter reading 6 Connect the transmitter dummy load output to the frequency counter Allow 5 minutes for the crystal oven to stabilize Adjust 1st LO XTAL tuning capacitor C84 in the RF module to set the new output carrier frequency Note Long term crystal aging will usually result in an overall shift in LO frequency Typically this shift will be less than 5 ppm 5 kHz at 950 MHz over the life of the radio which is within acceptable performance and regulatory limits On rare occasions this shift PCL6000 602 13375 01 Moseley PCL6000 5 27 may be greater thereby exceeding allowable carrier frequency limits It is therefore suggested to check LO frequency after 2 years of operation to verify it satisfies FCC guidelines Put the co
59. and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 2nd Local Oscillator The 2nd Local Oscillator LO2 is located in the RF module and is identical to the transmitter except for operating frequency and modulation capability LO2 consists of a 70 90 MHz ultralinear very low noise VCO which is phase locked to a crystal controlled reference oscillator The phase lock loop contains the frequency programming switches which allow the synthesizer to be changed in frequency steps of 25 kHz The RF output of LO2 is filtered to attenuate any harmonics The output level is approximately 7 dBm Double Converter LO3 PCL6030 6060 The Double Converter LO3 module provides the second and third down conversions of the IF signal and establishes the selectivity characteristics of the receiver The second IF is at 10 7 MHz and two phase linear ceramic filters are used to provide system selectivity composite or monaural The second of these two filters is switch selectable to allow the user to minimize distortion in those situations where the added selectivity is not necessary The 3rd Local Oscillator LO3 is located in the Double Converter LO3 module and is used for the third down conversion to MHz is a crystal oscillator operating at 13 7 MHz The output level is 7 dBm FM Demod PCL6030 6060 The FM Demod module has t
60. applied to CR12 A 3 5 Vp p input at J1 will produce 10096 modulation 50 kHz deviation composite The signal is buffered by U4 which drives the seven section elliptical low pass filter comprised of C55 L6 C56 C57 L7 C58 C59 L8 C60 and C61 This sharp cut off filter attenuates the harmonics of the FMO The output is buffered by the resistive attenuator R78 R79 R80 to provide a level at the mixer of 6 dBm R48 is used to sample the FMO output as feedback for the high speed dual modulus prescaler U2 The prescaler divides the 70 MHz signal by 10 or 11 depending on the divide ratio selected by the integrated PLL chip U1 This technique enables one divider IC to be used for small step sizes The PLL chip contains programmable dividers N A R a digital phase detector modulus control logic and lock detect circuitry to reduce chip count and increase reliability in synthesizer designs OSC1 is a temperature compensated crystal oscillator TCXO that provides a stable low phase noise reference oscillator for the phase lock loop The internal phase detector compares the VCO and reference oscillator inputs and delivers a series of pulses to the integrating loop filter Loop filter U3 is an integrating low pass filter that removes most of the reference frequency component of the phase comparator output It also provides DC gain to decrease the very low frequency noise of the FMO Further filtering of the AFC voltage is then deliver
61. approximately 1 mW 1st Local Oscillator 950 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 102 MHz nominal The resultant multiplication factor of the LO is X10 The output 1020 is filtered and attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 1st Local Oscillator 330 450 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 96 25 MHz nominal The resultant multiplication factor of the LO is X4 The output 385 MHz is externally filtered and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm 1st Local Oscillator 220 MHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator and a step recovery diode SRD multiplier The oscillator operates at 97 MHz nominal The resultant multiplication factor of the LO is The output 291 MHz is externally filtered and then attenuated before being applied to the upconverter mixer A level detector provides front panel metering inf
62. are wideband inputs It is assumed that the equipment supplying signals to be fed into the transmitter contain the band limiting filters necessary to limit the signals to the spectrum for the intended use i e 53 kHz for stereo composite 110 kHz for control subcarrier 26 kHz 3 mono 185 kHz 67 kHz 11 10 mono for secondary program audio If the external equipment generates any spurious signals these signals will be accepted by the transmitter and passed to the receiver Any spurious signals may cause intermodulation among the composite and subcarrier information and may increase the occupied bandwidth to the extent that interference will be experienced by neighboring users in the STL band PCL6000 602 13375 01 6000 2 11 Figure 2 5 shows the connections for a mono setup The same cautions and considerations apply as for composite The mono input has a selectable low pass filter for bandwidth limiting SUBCARRIER MUX INPUT PROGRAM SUBCARRIER GENERATOR SUBCARRIER AUDIO MUX INPUT CONTROL SUBCARRIER GENERATOR LIMITER NOTE 1 PROGRAM PROGRAM SOURCE PRIMARY NOTES 1 CONTROL SUBCARRIER GENERATOR MAY BE PART A REMOTE CONTROL SYSTEM 2 COAXIAL CABLE IS 58 A U OR EQUIVALENT 01 264A Figure 2 5 Transmitter and MUX Interconnect Mono PCL6000 602 13375 01 2 12 Installation 2 8 Program and Multiplex Installation Receiver At the outputs of the PCL6
63. audio spectrum analyzer as follows Frequency Far left graticule Dot Frequency Zero Hz LOG 10 dB DIV Source FREE RUN Mode NORM PCL6000 602 13375 01 5 18 Alignment Termination 1 Megohm REF dBV Resolution Coupled SPAN DIV 2 kHz Time DIV Auto Tracking GEN ON Set the OPERATE STANDBY switch on the transmitter to the OPERATE position Verify that the RADIATE LED is green Using the METER FUNCTION switch on the transmitter select the FWD PWR position Verify that the meter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL position Adjust the dot frequency on the audio spectrum analyzer to 1 0 kHz and the SPAN DIV to zero Adjust the level control on the audio spectrum analyzer for a reading of zero dB on the top scale of the transmitter meter Set the dot frequency on the audio spectrum analyzer to zero and the SPAN DIV to 2 kHz Using the METER FUNCTION switch on the receiver select the RF LVL position Position the switches on the adjustable attenuator for a reading between 1 K and 3 K on the receiver meter middle scale Using the METER FUNCTION switch on the receiver select the PGM LVL position Verify that the meter reads within 1 dB of the transmitter meter Select the LEFT ONLY position on the stereo source selector Adjust the step and variable attenuators on the audio spectrum analyzer so that the waveform is at the top graticule See
64. available TP1 that should be 0 0 5 volt when tuned properly The test point is available on the Audio Power Supply board for metering 4 3 5 Double Converter LO3 PCL6030 6060 System selectivity of the receiver is provided by the Double Converter LO3 module The following discussion will describe the signal flow The input signal is amplified by Q1 to overcome the insertion loss of the 70 MHz bandpass filter This amplifier also acts as an impedance transformer from the 50 ohm input impedance to the 3000 ohm impedance of the filter The primary purpose of the 70 MHz bandpass filter is to reduce undesired signals to levels that will not cause intermodulation in the 2nd mixer and 2nd IF amplifiers The 10 dB bandwidth of this filter is 4 MHz The output of the filter is impedance transformed down to 50 ohms to match the mixer The output of the filter is applied to mixer U1 through test point E1 and the optional attenuator at E6 This attenuator compensates for differing system gains of the PCL6030 and PCL6060 receivers The signal input to mixer U1 is mixed with the 2nd LO signal to produce the 2nd IF signal at 10 7 MHz The 2nd LO signal is provided by the synthesizer in the RF module The mixer is double balanced and its IF port 10 7 MHz is diplexed L1 C1 C2 R1 and fed through a filter L2 C3 L3 to amplifier Q1 The output of the 1st 10 7 MHz amplifier Q1 is buffered by emitter follower Q2 The source impedance required by filt
65. controls on the distortion analyzer for a value of 15 kHz Adjust the oscillator output level on the distortion analyzer so that the transmitter meter reads zero dB on the top scale Using the METER FUNCTION switch on the receiver select the RF LVL position Position the switches of the adjustable attenuator so that the receiver meter reads between 1K and 3K on the middle scale Using the METER FUNCTION switch on the receiver select the PGM LEVEL position Verify that the receiver meter reads between 1 and 1 dB on the top scale Position the controls on the audio spectrum analyzer as follows PCL6000 602 13375 01 5 22 Alignment DOT MARKER Dot on far left graticule DOT FREQUENCY Zero Hz LOG 10 dB DIV SOURCE Free run MODE NORM RESOLUTION Coupled SPAN DIV 5 kHz TIME DIV AUTO TERMINATION 1 Megohm REF dBV 5 Measure the stereo crosstalk as follows a Using the attenuator on the audio spectrum analyzer adjust the 15 kHz waveform to the top graticule See Figure 5 12a b Calculate the main channel to subchannel crosstalk by measuring the indicated waveforms and using the formula shown in Figure 5 12a Adjust the frequency of the distortion measurement test set to 7 5 kHz d Position the stereo source selector to the left minus right position e Calculate the subchannel to main channel crosstalk by measuring the indicated waveforms and using the formula shown in Figure 5 12 Troubleshooting 1 The stereo generato
66. frequency range Selecting the appropriate divide ratio synthesizes the crystal controlled reference oscillator and ensures long term stability The VCO consists of low noise field effect transistor Q4 in an RF grounded base configuration The drain of Q4 is connected to the resonant circuit inductor and capacitors The capacitance for this circuit is provided by C35 C40 and C41 as well as the three switching networks that control the capacitors C26 C30 and C34 The inductance consists of a stripline inductor on the PC board Feedback to cause oscillation is from the drain to the source consisting of 40 and C41 The normal frequency range of the oscillator is 70 7 to 90 7 MHz The signal is buffered by U4 which drives the seven section elliptical low pass filter comprised of C55 L6 C56 C57 L7 C58 C59 L8 C60 and C61 This sharp cut off filter attenuates the harmonics of the 2nd LO The output is buffered by the resistive attenuator R78 R79 R80 to provide a level at the mixer of 6 dBm R48 is used to sample the VCO output as feedback for the high speed dual modulus prescaler U2 The prescaler divides the 80 7 MHz signal by 10 or 11 depending on the divide ratio selected by the integrated PLL chip U1 This technique enables one divider IC to be used for small step sizes The PLL chip contains programmable dividers N A R a digital phase detector modulus control logic and lock detect circuitry to reduce chip count and inc
67. ggg gg o Oi ai 52 gt Bl o a n o o gt gt O O mimi MH N A BI a o OM s gt gt Transmitter 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 52 950 375 950 5 950 625 950 875 951 951 125 951 375 951 5 951 625 951 875 952 955 955 1125 955 5 956 956 1875 956 5 956 875 957 957 25 957 957 625 958 959 959 5 959 8 959 9375 Receiver 1 m m N N m N m m N m N N NY A A LH S2 o m F gt l m s o gt D m o o m N Transmitter T my TY my T So OF SG Of OF OG Of OF 1 1 1 1 1 1 1 1 1 1 1 15 52 S Oo N gt DW Ol QO mi 2 mi of of ny n wo BRB 53 aoj Alignment 6000 5 25 3 Put meter switch in LVL position and adjust for centerscale on the front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of
68. information to assist during alignment troubleshooting and module replacement Included are adjustment instructions to be used during troubleshooting module repair or module replacement for the following modules 5 4 1 Transmitter Audio power Supply 5 4 2 Transmitter RF Module 5 4 3 Doubler assembly 1 7GHz 5 4 4 RF Amplifier 5 4 5 Receiver Audio Power supply 5 4 6 Receiver RF Module 5 4 7 IF Demod PCL6020 5 4 8 Double Converter LO3 PCL6030 6060 5 4 9 Preamp 1 Mixer 950 MGz PCL6060 5 4 10 FM Demod PCL6030 6060 5 4 11 Adjacent Channel Filter PCL6060 5 4 12 Channel Control Board Multichannel Option 541 Transmitter Audio Power Supply AUDIO PROCESSOR COMP PGM LVL R28 Composite program level adjustment Sets the transmitter deviation of the composite signal Normal input is 3 5 Vp p The normal deviation of the transmitter is 50 kHz MONO PGM LVL R199 Monaural program level adjustment Sets the transmitter deviation of the mono signal Normal input is 10 dBm The normal deviation of the transmitter is 40 kHz DIG PGM LVL R200 Digital modulation program level adjustment Sets the transmitter deviation of the digital signal in DSP6000 applications Consult the DSP6000 manual for further information MUX1 LVL R29 MUX ch 1 level adjustment Sets the transmitter deviation for the MUX ch 1 deviation The normal input is 1 5 Vp p at 110 kHz Main carrier deviation normally is 5 kHz MUX2 LVL R40
69. input of the buffers Q2 Q1 will connect that corresponding capacitor into the resonant circuit If the Multichannel option is being utilized in the system these settings come from the Channel Control board s programmed inputs at J11 5 18 and 6 and switch S4 must be disabled open circuit If the RF module is being used as a stand alone switch S4 is used to switch in the required capacitors In either case green LED indicators CR6 F1 and CR5 F2 will light to indicate which setting is active The FIX capacitor is normally used to band switch to a frequency far removed from the initial setting The lock detect signal at U1 28 is a series of pulses at the step size rate 25 kHz when the loop is locked The low pass filter R19 and C13 provide an average voltage at U3 5 of 5 VDC when the loop is locked If the loop becomes unlocked the average voltage drops to 2 5 VDC This causes the output of comparator U3 to change state which lights the red LOSS OF LOCK LED on the module Also the voltage at FL2 drops from 5 to 0 VDC causing the radiate control circuitry to put the transmitter in STANDBY The output frequency of the 2nd LO is determined by the divider values programmed into the PLL chip U1 If the Multichannel option is being utilized the system these settings come from the Channel Control board s parallel inputs at J11 and the internal switches 51 S2 53 and S4 must be disabled 54 open circuit and 51 2 3 set to
70. invite you to visit our Internet web site at http www moseleysb com 6 2 Technical Consultation Please have the following information available prior to calling the factory Model number and serial number unit Shipment date date purchase of an Extended Service Agreement Any markings on suspected subassemblies such as revision level and Factory test data if applicable Efficient resolution of your problem will be facilitated by an accurate description of the problem and its precise symptoms For example is the problem intermittent or constant What are the front panel indications If applicable what is your operating frequency Technical consultation is available at 805 968 9621 from 8 00 a m to 5 00 p m Pacific time Monday through Friday During these hours a technical service representative who knows your product should be available If the representative for your product is busy your call will be returned as soon as possible Leave your name station call letters if applicable type of equipment and telephone number s where you can be reached in the next few hours Please understand that in trying to keep our service lines open we may be unable to provide walk through consultation Instead our representative will usually suggest the steps to resolve your problem try these steps and if your problem remains do not hesitate to call back After Hours Emergencies Emergency consultation is
71. power level is low peak the external RFA filter 2 Connect RFA output to power meter and spectrum analyzer using an appropriate high power attenuator dummy load 3 Connect input and adjust R1 1st stage bias through access hole in RFA for 6 watts 38 dBm 4 Monitor PA final current sample voltage across C701 and C702 Calculate final current Vsample divided by 0 16 Current should be lt 1 7 amp 5 Check harmonic and spurious signal content for level lt 65 dBc PCL6000 602 13375 01 5 38 Alignment 5 4 4 2 Alignment Procedure 450 MHz 1 Measure input level at the RFA It should be greater than 18 dBm and less than 23 dBm damage level If power level is low peak the external RFA filter 2 Connect RFA output to power meter and spectrum analyzer Using appropriate high power attenuator dummy load 3 Connect input and adjust RFA power supply 412 5 ADJ for 10 watts 40 dBm 4 Monitor final current for reading 2 0 amp 5 Check harmonic and spurious signal content for level 65 dBc 5 4 4 3 Alignment Procedure 330 MHz 1 Measure input level at the RFA It should be 20 dBm 100 mW nominal If power level is low peak the external RFA filter 2 Connect RFA output to power meter and spectrum analyzer using appropriate high power attenuator dummy load Connect input and adjust C701 C703 and C707 for max output power Adjust C712 and C713 for maximum output power minimum final stage current and
72. to noise ratio SNR determined RMS voltage with modulation SNR 2010 9 RMS voltage without modulation Note Demodulated stereo SNR will be approximately 12 dB greater than broadband SNR While this concludes the basic bench test of the units the user may want to run further experiments to become familiar with the system Sections 3 4 and 5 should be consulted for a thorough understanding of the STL system before proceeding with any higher level testing It must be noted that any testing for stereo performance must be accomplished with a very high quality stereo generator and stereo demodulator combination The stereo generator and demodulator combination should be tested back to back to determine their performance independently of the STL link 2 4 Rack Installation The PCL6000 units are designed for mounting in standard rack cabinets preferably between waist and shoulder height The transmitter and receiver have mounting holes for Chassis Trak C 300 5 1 14 chassis rack slides If the rack will accept chassis rack slides their use is recommended If chassis rack slides are used be sure to leave at least a 15 inch service loop in all cables to the equipment When mounting the transmitter or receiver in a rack the unit must have an unobstructed free flow of cooling air across the rear panel Continued operation in a confined environment can cause the ambient temperature to exceed specification resulting in reduced life or
73. two stage discrete design which amplifies the input signal 100 mW typical to the nominal 10 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module Doubler Assembly 1 7 GHz The output frequency of the TX RF module is one half the desired carrier frequency 850 MHz nominal The output is applied to the Doubler Assembly which multiplies the signal X2 and is filtered before being amplified by the RFA 1 7 GHz nominal RF Amplifier 1 7 GHz The RF Amplifier module internally consists of a four stage discrete design which amplifies the input signal 1 mW typical to the nominal 5 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module Transmitter Control The Transmitter Control section of the Audio Power Supply board has several functions One of these is to sense the AFC LOCK detect signal from the RF module If this module goes out of lock then the radiate control logic circuit provides
74. 0 MHZ PCL6020 6030 Filters FL 12 and FL 11 in the RF module are two and three pole helical filters with a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five adjustments should be set for a flat passband greater than 5 MHz wide PRESELECTOR FILTER 950 MHZ PCL6060 The filter is located under the Audio Power Supply board of the receiver see system assembly drawing The filter has a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide PRESELECTOR FILTER 220 450 MHZ The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 8 MHz This can be tuned by observing the RF LVL on the meter and peaking the three adjustment capacitors of the filter Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port PRESELECTOR FILTER 1 7 GHZ The filter is located at the rear of the receiver see system assemb
75. 0 VAC operation unless otherwise specified Select the operating voltage by programming the line filter fuse holder on the back panel as shown in Figure 2 1 The desired voltage should be visible when the voltage selection card is inserted If operating voltage is changed change the fuse in accordance with Table 2 1 PCL6000 602 13375 01 2 2 Installation MD11914 Figure 2 1 Line Filter Fuse Holder Programming Detail shows 100 VAC operation selected Table 2 1 Transmitter and Receiver Fuse Settings Transmitter Fuse Receiver Fuse 100 VAC 2A 1A 120 VAC 2A 1A 220 VAC 1A 240 VAC 1A PCL6000 602 13375 01 6000 2 3 222 DC Option For DC operation verify the correct fuse is installed Table 2 2 applies to most DC units Due to possible technical issues at the factory ALWAYS replace the fuse with the same type and rating of fuse installed by the factory Table 2 2 Transmitter and Receiver Standard DC Fuse Values Transmitter Fuse Receiver Fuse 5A 3A 12 VDC 24 VDC 2A 2A 48 VDC 1A 1A 2 3 Pre installation Checkout While the user has both the transmitter and receiver at the same location we suggest that a pre installation checkout of the system be performed before mounting the equipment in racks separated by many miles Figure 2 2 shows one of the several possible bench test setups Minimum Equipment to Perform Bench Test Instrument Type Suggested Model Critical Specification
76. 00 602 13375 01 Moseley PCL6000 4 11 Table 4 1 Transmitter Channel 0 Programming 64 MHz 32 MHz 16 MHz 8 MHz 4 MHz 2 MHz 1 MHz 500 kHz 250 kHz 200 kHz 100 kHz 50 kHz 200 kHz FIX CAP ACTIVE RF Module Circuit F2 CAP ACTIVE RF Module Circuit F1 CAP ACTIVE RF Module Circuit MOD1 ADJ ACTIVE MOD2 ADJ ACTIVE ADJ ACTIVE The two digit display DGT2 is controlled by the EPROM outputs 00 04 DO controls the 10 s digit and 01 04 BCD DISPLAY are decoded by 013 to provide the 1 s display For systems with less than 16 channels the display will blank and no programming is available DGT1 may be tested by shorting jumper E1 DGT1 TEST Analog switch IC U6 is used to compensate for modulation gain variations with frequency in the FMO located in the transmitter RF Module Each pot adjustment R12 R13 and R14 operates independent of each other and is factory set for each system configuration PCL6000 602 13375 01 4 3 Receiver Theory of Operation 4 31 Receiver Audio Power Supply 4 3 1 1 Power Supply AC The power supply consists of an AC power connector P1 transformer rectifier CR1 capacitive filters C4 C5 and fixed linear regulators VR1 VR2 VR3 VR4 The power supply has four output voltages 15 15 5 12 The regulated 12 is used to power the crystal ovens for the 1st LO and 2nd LO crystals WARNING Failure to ground the third lead of the input pow
77. 00 602 13375 01 Moseley PCL6000 4 17 selectivity characteristic BW 20 MHz The preamp AR2 is a monolithic gain block with a gain of 14 dB NF 2 8 dB Mixer HY1 performs the first down conversion to the 60 80 MHz IF 4 3 2 10 1st IF Amplifier PCL6020 6030 The IF output of the mixer HY1 is terminated with a constant impedance diplexer network C108 L18 R79 C109 L19 and wideband amplifier AR3 that has a high intercept point to prevent interference intermodulation The 1st IF amp also buffers the mixer output and provides gain to overcome conversion losses 4 33 Preamp 1st Mixer 950 MHz PCL6060 The Preamp 1st Mixer module has been designed to provide optimum service in the most hostile RF environments The active attenuator low noise preamplifier 1st mixer and 1st IF amplifier are integrated in this module The input signal is applied to a PIN diode attenuator normally set to minimum loss 0 5 dB By adjusting the diode bias via R13 RF ATTEN ADJ the attenuator can be set to approximately 15 dB to prevent preamp overload in very high level RF environments The signal is split by a 3 dB hybrid coupler microstrip design The outputs are each applied to low noise amplifiers Q3 and Q4 Each amplifier employs active bias Q2 Q5 to stabilize the best low noise bias conditions The outputs are recombined by another hybrid coupler This configuration increases the third intercept point by 3 dB providing an extremely robu
78. 000 receivers the baseband output of the IF demod is split and filtered into two bands The audio outputs are from 30 Hz to approximately 85 kHz 15 kHz mono The multiplex outputs are bandpass filtered to pass the frequency range of 100 kHz to 200 kHz 22 kHz to 85 kHz mono Figures 2 6 and 2 7 depict a typical interconnection of a PCL6000 receiver at the remote transmitter site The unbalanced output 3 5 Vp p composite 10 dBm mono is interconnected to the wideband input of the transmitter with coaxial cable RG 58 A U typical with BNC connectors or twisted shielded pair for mono MODULATOR RF OUTPUT MLILTIPLEX INPUT SCA SUBCARRIER PROGRAM SUBCARRIER GENERATOR DIRECT FM EXCITER CONTROL SUBCARRIER DEMODULA TOR NOTE 1 PROGRAM SUBCARRIER DEMODULATOR SUBCARRIER Z COMPOSITE STEREO WIDEBAND SUBCARRIER 1 INPUT WDE BAND MULTIPLEX OUTPUT OUTPUTS 2 STL RECEIVER NOTES 1 CONTROL SUBCARRIER DEMODULATOR MAY BE PART REMOTE CONTROL SYSTEM 2 COAXIAL GABLE 15 80 58 A U OR EQUIVALENT 265A Figure 2 6 Receiver PGM and MUX Interconnect Composite PCL6000 602 13375 01 6000 2 13 MODULATOR RF OUTPUT MULTIPLEX INPUT SCA SUBCARRIER PROGRAM SUBCARRIER GENERATOR DIRECT EXCITER PROGRAM SUBCARRIER DEMODULATOR DEMGDULATOR NOTE 1 SUBCARRIER 2
79. 0Z 2 100 i 2 8 M 2 33 2012 uno ONHILIN 9 TVNI3 loz 91 7459 RF Amplifier 330 MHz Schematic PCL6000 602 13375 01 7 45 6000 Oy 7 9 eS 20B3038 Rev A RF Amplifier 330 MHz Assembly PCL6000 602 13375 01 7 46 Schematic and Assembly Drawings zs 8 B 8 86 8 a2u s e 3 8 7tpF T 5 1 38v 2 1 39v H 2 220 ae AX 1 RESISTOR VALUES ARE IN DHNS 1 0W 5 CAPACITOR VALUES ARE IN 5 NOTES UNLESS OTHERWSE SPECIFIED Ax 99 2 M 91 7396 RF Amplifier 450 MHz Schematic PCL6000 602 13375 01 7 47 6000 gt Zc d 4 2 A A Z S 20B2958 Rev D RF Amplifier 450 MHz Assembly PCL6000 602 13375 01 7 48 Schematic and Assembly Drawings a a 5 2 21B2891 4 Rev D 6020 Receiver Final Assembly PCL6000 602 13375 01 Moseley PCL6000 7 49 RF MODULE OBL CONV LO3 gt M a a a a 5 lt 21 2892 4 Rev D 6030 Receiver Final Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 50 3 2543 5 SEIINN SALON SIVAN IN
80. 1 Moseley PCL6000 7 19 sun zu 4 258 a Bs KAN AAA Sore 4 8 E s gt gH i 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 4 of 4 PCL6000 602 13375 01 7 20 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly PCL6000 602 13375 01 7 21 6000 THOIS SSIINN 53 00 ADS SOVAVJOMIM NI SITWA XE P L SNHQ NI SJNTVA MDISISZU L OL L ud OL 18 138 0 NOLVa3dO TINNVHOLTNA 103 2 35 2329 923 Anu NT id 32V JM3LNI 3NNVHOIL TON ot ee TEN ars UN EN IN IN L 193130 3991 VZd Bd Tid OL SIV AINI EE An Gs as 1HNDL lt CON 8 wu ALT na ur 98 8 612 913 TU Z 5 1980 2 6 ANT SRI TVU Vd SH SINE PCL6000 602 13375 01 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 7 22 Schematic and Assembly Drawings 15v lt FREQ SWITCHNG CONTROL 5 a i E IIS 5 8 22 seal 884365 2 600 10228 01 Receiver RF Module Schematic p 2 of 4 PCL6000 602 13375 01 7 23 Moseley PCL6000 2319346 36IMHIHLO SS3N SILON 003 Sv
81. 133 6000 20C3104 Rev Channel Control Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 134 032345 SSSINN SILON NI SANTWA 36199493 SWHO 5 30155538 917515 Channel Control Schematic 1 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 135 PROGRAM OUTPUT BUS T n34 UNE E HL 8 8 s 917515 Channel Control Schematic 2 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 136 179 99 19 1628 1603 15 6 634 354383333 008 917515 Channel Control Schematic 3 4 PCL6000 602 13375 01 Moseley PCL6000 917515 Rev A Channel Control Schematic 4 of 4 7 137 REFERENCE DES 22 lt 52 CSS C30 CIS PCL6000 602 13375 01 7 138 Schematic and Assembly Drawings RF MODULE a 2 0 3 lt gt lt 910 10121 02 Rev C PCL6010 Multichannel Option PCL6000 602 13375 01 Moseley PCL6000 7 139 5 RX AUDIO POWER SUPPLY CAUTION HIGH VOLTAGE REPLACE dii 910 08614 01 Rev B PCL 6020 Multichannel Option PCL6000 602 13375 01 7 140 Schematic and Assembly Drawings CHANNEL CONTROL Pes ss ES m um 21 S a
82. 3 Detected DC level 41 5 representing power output of LO Note When installed in the PCL6010 transmitter set for the 950 MHz kand the frequency output of this module should be 1020 MHz with a power output between 5 and 9 dBm This measurement should be made on a low power wattmeter 1ST LOCAL OSCILLATOR 330 450 MHZ XTAL OSC TUNE C84 Crystal oscillator tune Sets peak oscillator output and operating point DRIVER TUNE C88 Sets input level to the doubler for maximum odd harmonic rejection SRD INPUT MATCH 1 C95 Diode drive adjustment Used to tune for maximum power output SRD INPUT MATCH2 C98 Diode drive adjustment Used to tune for maximum power output SRD OUTPUT MATCH C101 Diode match adjustment Used to tune for maximum power output LO FILTER EXT External LO filter Tune for maximum power output LO LVL FL3 Detected DC level 1 5 VDC representing power output of LO 5 4 3 Doubler Assembly 1 7 GHz The only adjustments to the Doubler Assembly are in the filter FL2 The filter can be adjusted by injecting a sweep signal into FL2 The filter response may be tuned by observing the output on a spectrum analyzer If a quick alignment is needed put the meter switch in the FWD PWR position and peak the reading by adjusting the filter screws 5 4 4 RF Amplifier 5 4 4 1 Alignment Procedure 950 MHz 1 Measure input level at the RFA It should be greater than 13 dBm and less than 19 dBm damage level If
83. 3 2543 5 SEIINN SALON SIVAN IN SIVA SIKILUNGVO 913 TG 13 YAT DU VO 5 ASIt lt AGI be kk amas 1 99 E q 9 2 0 e 9 e 9 8 9 AD 5 2 64 We aaa 1 co b 43130 600 10710 01 Receiver Audio Power Supply Schematic 1 of 4 PCL6000 602 13375 01 7 119 6000 JON ot Tina 600 10710 01 Rev B Receiver Audio Power Supply Schematic p 2 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 120 NI QNV83SV8 ALISOdNOS SILON 804 40 I 30Vd 388 su J Dvd 587 NI NMDHS IN 338 tou 600 10710 01 Receiver Audio Power Supply Schematic p 3 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 121 sun zu a Bs KAN AAA Sore 4 8 E s gt 8H 600 10710 01 Receiver Audio Power Supply Schematic p 4 of 4 PCL6000 602 13375 01 7 122 Schematic and Assembly Drawings 20B3024 Rev C Receiver Audio Power Supply Assembly PCL6000 602 13375 01 7 123 6000 THOIS SSIINN 53 00 ADS SOVAVJOMIM NI SITWA MQLDVdV2 XE 9 1
84. 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 2 2 3 1st Local Oscillator 220 MHz The 1st LO signal is derived from crystal controlled oscillator Q5 The fifth overtone crystal Y1 97 000 MHz nominal is temperature stabilized by a 65 proportionally controlled oven Oscillator buffers and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is phase shifted in T1 and applied to the base of Q7 The output of the transistor is impedance matched to the step recovery diode multiplier by C95 The step recovery diode CR14 and the 12 nH printed inductor form a X3 multiplier The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to an LC output circuit L16 and C101 which is tuned to the desired output frequency The multiplier output is routed through an external three pole helical filter and is tuned to the LO output frequency 291 MHz nominal The output is terminated into a 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 2 2 4 1st Local Oscillator 330 450 MHz
85. 30 The receiver RF input passes through a two pole helical filter FL12 to protect the succeeding low noise preamp from high level carriers The preamp AR2 is a monolithic gain block with a gain of 14 dB NF 2 8 dB The three pole helical filter FL11 provides image frequency rejection and front end selectivity characteristics BW 20 MHz Mixer HY1 performs the first down conversion in conjunction with the 1st LO to the 1st IF 60 80 MHz 4 3 2 7 Preselector Preamplifier 1st Mixer 950 MHz PCL6060 In order to accommodate the PCL6060 receiver the RF module is configured differently The Preselector Preamplifier 1st Mixer and 1st IF amplifier are not installed and the 1st LO is routed to the IF output connector J2 See the description of the Preamp 1st Mixer module below 4 3 2 8 Preselector Preamplifier 1st Mixer 150 450 MHz The receiver RF input passes through an external three pole helical filter to protect the succeeding low noise preamp from high level carriers and provide the front end selectivity characteristic BW 8 MHz The preamp AR2 is a monolithic gain block with a gain of 20 dB NF 2 8 dB Mixer HY1 performs the first down conversion to the 60 80 MHz IF 4 3 2 9 Preselector Preamplifier 1st Mixer 1 7 GHz The receiver RF input passes through an external five pole interdigital coupled resonator filter to protect the succeeding low noise preamp from high level carriers and provide the front end PCL60
86. 30 PCL6060 Composite System sse 1 3 2 PCL6020 PCL6030 PCL6060 Monaural System p 1 3 3 PCL6010 Transmitter Specifications see 1 3 4 1 3 4 PCL6020 PCL6030 PCL6060 Receiver Specifications 1 4 System Description 1 5 1 4 1 PCE6010 Ttanst iitter coe erect 1 5 1 4 2 PCL6020 PCL6030 PCL6060 Receivers 00444 0400000 a 1 8 2 INSTALLATION e 2 1 24 Wa Chan D yy a 2 1 22 a 2 1 2 2 1 AC Eine Voltage Selection eee or ORO D Re CENE 2 1 2 2 2 DC Option 2 3 2 3 Pre installation Bh Tu ui rrr 2 3 24 Si ES S REENE I SE nus RUE 2 5 2 5 Antenna Installation Ec isi r SO r E SRE 2 6 2 6 Transmission CADIES eer Km 2 7 Program and Multiplex Installation Transmitter 2 8 Program and Multiplex Installation Receiver 2 9 Main Standby 2 9 1 Tran
87. 3901 1831 NI 193138 V 12955 DZ 1038 SV 3317141809 wgndl m 1521 199125 N LA 24 d u 888984123 98 7910 SID 9012 8102 BB 7982 FNI NI USS QSTWIGNI LON IN 14 056 008 un Whe N TE sana x vos 490 mm ator mor 1 Bu a wes fosser m m utu esu 2206050 rosam owoce OS cox c 886000 256 092 A A A S A oJ 8 8 r 28 5 95 2 600 10228 01 Receiver RF Module Schematic p 3 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 24 SS re m sex fv wwe w Eus un mom move z ser oser 99 09 IN 88948 zu ozz IN HH S amp VdA8 Y N s
88. 4 BH N RH A ji S i48 858 e X9g1 AS 2 298 z T 1 2 9 OM MN M a 8 5 og WNION AZt lt TAN IN cu Moseley PCL6000 103130 001 40 80 06 0 0990 0 8 09092HNOGE 10 0 7 0 066 2 088 076 10 95 0 0 5 10 02440 046 FHNOZZ 95315345 55 341 SUON 706 b L 35 SJNTVA L el OL 1 5 135 3 OL CS 15 135 NOLVYIGO TINNVHILTMM HDI 2 234 22 32 3831 TANNVHOLL TN 2799222 4 HENNING age y am N ARO a sa ur 16 15 u su 213 vy OSO 122 43 CHWTH VTA RIVES ET 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 88 UIS 4422 2 7 7 5 150 660 5 5 1 27 Lx 95 292 93 02 12 22 oA CHOIVRORIU 58542 gt lt 568 R e AA 14 2 ZZ 15 1 ur 0 7Nid0 600 10228 01 Receiver Module Schematic p 2 of 4 PCL6000 602 13375 01 9313234 5 0 SSTIN
89. 5341 SALON v L SINHO 53 MOLSIS3Y 819 91B7502 Rev 1 Adjacent Channel Filter 6060 Schematic PCL6000 602 13375 01 Schematic and Assembly Drawings 7 102 L3 QNOW 13 INHO 2083089 1 Adjacent Channel Filter Assembly PCL6000 602 13375 01 Moseley PCL6000 7 103 7 4 PCL 6000 1 7 GHz Standard System DESCRIPTION REV LEVEL RF Amplifier 1 7 GHz 6w Schematic 930 12053 02 B B Receiver AudiorPowsr Supply Schematic 8001071091 Double Converter 6030 Schematic FM Demod 6030 Assembly RF Amplifier 1 7 GHz 6w Assembly 930 12052 02 NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description PCL6000 602 13375 01 Schematic and Assembly Drawings e 2 Fizzi 2 771 224 9721 7 104 2182926 6010 Transmitter Final Assembly 950 MHz PCL6000 602 13375 01 7 105 6000 9336355 ISMYSHLG SC31N SILON SENE SHL SSV zo AJANA OINVASN LON LON V 14 EET Do MAN EU sila a A ET fen W ast lt 3 g Bi 318 Bl BSE Po
90. 6 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module RF Amplifier 450 MHz The RF Amplifier module internally consists of a three stage hybrid amplifier which amplifies the input signal 100 mW typical to the nominal 10 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a PCL6000 602 13375 01 Moseley 6000 1 7 dual directional coupler with detectors that provide indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module RF Amplifier 330 MHz The RF Amplifier module internally consists of a three stage discrete design which amplifies the input signal 100 mW typical to the nominal 10 watt transmitter output The output is filtered to attenuate all higher order harmonics to a level of at least 60 dBc The output is sampled via a dual directional coupler with detectors that provide an indication of the forward and reflected power of the RF amplifier The final stage current is sampled and metered in this module RF Amplifier 220 MHz The RF Amplifier module internally consists of a
91. 8 LM 6 913105 YO 5 1 14 58101 108 201 4 lt Law PK MOLVUVONOO 1 pa ony inn lt AZ lt 3n ASSV GONIG 4548 24 AT ZHNZCL CD 2 lt 99 09140305 8 853141 SLON T3NNVH LLTIN 303 10 60101 100 7200 354333435 VY 24 24 AT dav 01381 o 008 soara I Figure 1 4a PCL6060 Receiver Block Level 9241331 A Sheet 1 of 2 PCL6000 602 13375 01 1 19 1281 26 avos 8 02 2 oN3 31955 LON OG Z 2 13348 6 0 SILON Z JO L 25 15 0909 104 13431 9 F OCO F XX AWD VINOS T v 1 30NVaTIOL SLIVA OP SQA 89 17 21 20 2801 3L0N AlddNS HaWod ol nv 13 14033 PIIN Moseley PCL6000 Figure 1 4b PCL6060 Receiver Block and Level 92A1331 R A Sheet 2 of 2 PCL6000 602 13375 01 1 20 System Characteristics This page is intentionally blank PCL6000 602 13375 01 6000 2 1 2 Installation 2 1 Unpacking The 6000 transmitter and receiver should be carefully unpacked and inspected for shipping damage Should inspection reveal any shipping damage visi
92. 91 8 en CONO 2 d E i 87 8 ong 8 2225 zol ol 258021 Oe in g H 925 n 292 z s n asa 8 162 d 1 m a a L n 13 oso Oe dt aid SY E wc RS um 218 1 w in er 4 Es TERES Ej 1 ang 29 101 NY NYB LHM vu NSO LHM N 5274 2 2082941 Demod 6020 Assembly PCL6000 602 13375 01 7 97 3 ISP V 16 mime sot bas 31498 LON og sem L uos CN 01 DJ ANOD 780 5 ADS SOVANJOMOMO NI SATWA UID avevn 0909 0 09 104 __________ XS N 5 5 1416 DIO E XXX 0 0 F XX 6 0 goc ASSV GITVISN LON Z NVTLISND 3 Loved 08101009 sedan y LY 9003 34v INIA SHO 3 HIM 5 21 09918 32 193 Moseley PCL6000 91B7451 Rev E Double Converter LO3 6030 6060 Schematic PCL6000 602 13375 01 Schematic and Assembly Drawings 7 98 20B3039 Rev E Double Converter LO3 6030 6060 Assembly PCL6000 602 13375 01 7 99 Moseley P
93. ADJ PCL6030 6060 a 1ST 10 7 MHz IF ADJ MONO WB COMP NB COMP b 2ND 10 7 MHz IF ADJ MONO COMP Check the receiver configuration to verify which filter adjustments MONO monaural WB COMP wideband composite or NB COMP narrowband composite pertain to your system 5 The distortion reading should now be less than 0 296 Switch the frequency on the distortion measurement test set to 1 0 kHz Verify that the distortion reading meets specifications Troubleshooting 1 The following procedure may be used to determine if the 10 7 MHz filters are a source of high distortion a PCL6020 Remove FL1 and FL2 from the IF Demod module and replace it with a 1 0 K ohm resistor The resistor leads should first be cut between 0 3 and 0 4 inch from the body The ends of the resistor leads should then be flattened using a pair of needle nose pliers so they can be inserted in the filter sockets The cover should then be replaced PCL6030 6060 Remove the appropriate ceramic filters FL1 and FL4 Monaural FL2 and FL5 Wideband Composite or FL3 and FL5 Narrowband Composite from the Double Converter LO3 module and replace it with a 1 0 ohm resistor The resistor leads should first be cut between 0 3 and 0 4 inch from the body The ends of the resistor leads should then be flattened using a pair of needle nose pliers so they can be inserted in the filter sockets The cover should then be replaced b Using the distortion measurement t
94. ANDBY until the coupler and attenuator are connected MO1037 CAUTION avoid receiver damage initally set attenuator for maximum attenuation Figure 5 4 Test Setup For Deviation Alignment 5 Disconnect the program input to the transmitter and adjust display on the spectrum analyzer so that the waveform is at the top graticule see Figure 5 5 Reconnect the program input of the transmitter The display on the spectrum analyzer should be similar to Figure 5 5 Adjust COMP PGM LVL R28 or MONO PGM LVL R199 on the Audio Power Supply board for a Bessel null of at least 50 dB on the spectrum analyzer PCL6000 602 13375 01 5 10 Alignment Using the METER FUNCTION switch on the transmitter select the PGM LVL position Adjust COMP PGM MTRG R201 or MONO PGM MTRG R202 as is necessary on the Audio Power Supply board for a reading of 0 dB on the top scale of the meter MD1258A BMP Figure 5 5a Bessel Null Function Waveform dA Figure 5 5b Function Waveform Bessel Null BMP 6 Using the METER FUNCTION switch on the receiver select the RF LVL position Position the switches on the adjustable attenuator for an RF level reading between 1 K and 3 K on the receiver meter Set the controls on the distortion analyzer as follows PCL6000 602 13375 01 Moseley PCL6000 5 11 Meter Function Reference level Frequency 1 0 kHz Meter Input Range 10 dB With the oscillator output connected to the transmit
95. AP BIAS R37 VARICAP BIAS 4 MOD ADJ R33 F1 AFC ADJ C34 F1 ON S42 F1 LED CR6 F2 AFC ADJ C30 F2 ON 54 3 F2 LED CR5 FIX ON S4 4 FMO LVL TP2 Frequency Trim Adjustment Used to tune the reference oscillator This LED gives a red indication when the AFC loses lock AFC level test point Monitors the DC level of the AFC loop It is normally set to 7 VDC Varicap bias adjustment Used to adjust the FMO for minimum distortion Varicap bias level test point A DC level 5 5 VDC to set a nominal minimum distortion point Modulation adjustment Used to set the FMO deviation It is normally set to 40 kHz with 2 8 Vp p input F1 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet Switches on the F1 AFC adjustment capacitor active Indicates the F1 AFC adjustment capacitor is active F2 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet Switches on the F2 AFC adjustment capacitor active Indicates the F2 AFC adjustment capacitor is active Switches on the FIX AFC adjustment capacitor active level test point DC level 40 9 VDC that represents the detected relative output of the FMO oscillator FREQUENCY SELECTOR SWITCHES 54 1 1 52 53 Programs the 64 MHz step size of the synthesizer Programs the 4 MHz step size of the synthesizer Pr
96. BY OPERATE Radiate LED green METER FUNCTION PGM LVL Using the METER FUNCTION switch on the receiver select the PGM LVL position Adjust the oscillator output level on the distortion measurement test set for a reading of 0 dB on the top scale of the transmitter meter Rotate the REFERENCE ADJUST on the distortion measurement test set for a 10 dB reference on its front panel meter Disconnect the composite input at the transmitter rear panel Using the INPUT RANGE switch on the distortion measurement test set measure the ultimate wideband SNR Note The reference is 10 dB hence a meter input range indicating 60 and a meter reading of 6 would indicate an SNR of 76 Position the INPUT RANGE switch to 10 dB and reconnect the program input to the transmitter composite BNC connector PCL6000 602 13375 01 5 14 Alignment SWITCH ABLE DISTORTION MEASURMENT SET AUDIO IN 956 OUT 75 uS DE EMPHASIS L 50 2 PER J FILTER CAUTION Place the transmitter RADIATE STANDBY switch in STANDBY until the coupler and attgnuator are connected 1039 CAUTION To avoid receiver damage initially set attenuator for maximum attenuation Figure 5 7 Test Setup For Signal To Noise Ratio Measurement Troubleshooting 1 If the STL link fails to meet the ultimate SNR specification the sensitivity test paragraph 5 3 2 should be performed on the receiver prior to troubleshooting the transm
97. CL6000 031303968 3SIMM3HLD SSSINN SILON SALIVI M L SHOLSISSH L 1621 DILSANOVIO 20 JH MAHL 1404 et E HANDILS vt AMS 46 NE E XOT 49 4 geri OEY 291 3 42 A QU MEN lt UL E E MET uAm 201 1 29 u N Y NN 99 EU 1 A I 4 su 019 s m 51 A OUO 141 ton 8 am 200 009 jo da 884 ven 8521 4 2 42 JET Yo uu e d X01 or TT 80 Sa vin Mi ano e gt k zu 4 01 2007 aron o ES T 89 98 4 1 A INT WEP 5 NOLIVLAST f 3 8 8 d THAN 1 5 QNVB35NB 4 4 19 4 835 4 91 7387 FM Demod 6030 6060 Schematic PCL6000 602 13375 01 7 100 Schematic and Assembly Drawings 20B2949 Rev G FM Demodulator 6030 6060 Assembly PCL6000 602 13375 01 7 101 6000 34001 4805 1 FG 869 vS23 Jdoec 2 865 431319345 ASIMYSHLO 5
98. D for negative or positive DC input and fuse rating See Section 4 2 for further technical information concerning the internal configuration BEE e MUX1 TX REMOTE MUX2 CHNL REMOTE 01135 3 3 PCL6010 Transmitter Rear Panel DC Option 3 23 Multichannel Transmitter Operation The Multichannel transmitter is preprogrammed for up to 16 channels of operation The frequencies are predetermined by the customer and are factory set at time of manufacture The PCL6010 transmitter front panel for the Multichannel option is depicted in Figure 3 4 The front panel display indicates the CHANNEL number that is currently active A label on the rear panel lists the particular channel assignment frequencies The front panel SELECT knob enables the user to change channels as necessary The transmitter and receiver are matched with respect to channel assignment AFC LVL IPA LVL Tr LO LVL PACURRENT e PCL 6010 Aural STL Transmitter OPERATE 5V FWD PWR 220222222 7 CHANNEL SELECT Multichannel System 12V REFL PWR STANDBY 15V PGM LVL MUX LVL AFG Lock RADIATE MD1132 Figure 3 4 PCL6010 Transmitter Front Panel Multichannel Option PCL6000 602 13375 01 3 4 3 2 3 1 User Programmable 0 CHANNEL 0 is provided as a user programmable channel for backup or testing purposes This channel is set i
99. DC Option 3 3 Figure 3 4 PCL6010 Transmitter Front Panel Multichannel Option 3 3 Figure 3 5 PCL6020 Receiver Front Panel 3 5 Figure 3 6 PCL6030 Receiver Front Panel 3 5 Figure 3 7 PCL6060 Receiver Front Panel 3 5 Figure 3 8 Typical SNR 8 3 7 Figure 3 9 PCL6000 Receiver Rear 3 7 Figure 3 10 PCL6000 Receiver Rear Panel DC 3 8 Figure 3 11 PCL6020 Receiver Front Panel Multichannel Option 3 8 Figure 5 1 Test Setup for Frequency Alignment 5 4 Figure 5 2 Sensitivity Test 5 5 Figure 5 3 Selectivity Test 5 7 PCL6000 602 13375 01 Moseley PCL6000 Figure 5 4 Test Setup For Deviation Alignment 5 9 Figure 5 5a Bessel Null Function 5 10 Figure 5 6 Test Setup for MUX Channel Alignment 5 12 Figure 5 7 Test Setup For Signal To Noise Ratio
100. EFL PWR 15V PGM LVL 2 2 2 FAN 2 2 2 R um 15V MUX LVL 1137 3 1 PCL6010 Transmitter Front Panel Standard The two transmitter status LEDs are red green bi color LEDs AFC LOCK is green when the Synthesizer has achieved a lock condition When AFC LOCK is red it indicates that an unlock condition exists This inhibits any radiation of RF power resulting in being red When power is initially applied to the transmitter it is normal for AFC LOCK to be red for several seconds RADIATE will be green when the transmitter is supplying RF power red when not supplying RF power RADIATE is controlled by the internal interlock controls the RADIATE STANDBY switch and any external logic associated with main standby operation The OPERATE STANDBY switch functions as an on off switch for the RF power output In the OPERATE position the RF power will be on provided all of the internal interlocks are enabled In the STANDBY position transmitter operation is controlled by external switching control and the internal interlocks PCL6000 602 13375 01 3 2 3 1 Transmitter Meter Functions and Scales PGM LVL MUX LVL REFL PWR AFC LVL Center Arc Relative LOLVL Center Arc Relative IPALVL Center Arc Relative PA CURR Linear X 0 1 Amps 45V Linear Volts 12 V Linear Volts 15 V Linear
101. EIN P2 8 is grounded The rear panel auto transfer input XFERIN P2 9 is at a logic high level 5 VDC This signal will force the collector of Q1 to a logic low level 4 The front panel momentary manual transfer switch S1 is activated also forcing the collector of Q1 to a logic low level 5 The AFC LOCK signal from the RF module P3 6 is at a logic low level indicating a loss of lock condition in the 2nd LO PCL6000 602 13375 01 Moseley PCL6000 4 13 When of the above conditions is present pin 6 of U15a will go to a logic high level This signal activates the FET mute switch U1 This signal is inverted by U15b to control the front panel OPERATE status LED and activate the driver inverter 016 U16c is a high current relay driver for the mute relay K1 When the receiver is muted pin 6 of U16 will go high and no current will flow through the relay coil This condition is also true if power to the receiver is lost In the mute mode K1 disconnects the program signal at P2 20 composite P2 18 MONO P2 16 and P2 14 MUX The armature contacts of K1 are connected to the rear panel to activate alarms U16a and U16b form a non inverting relay driver for remote transfer to another receiver in a hot standby installation This output XFEROUT appears at P2 7 and is routed to the rear I O panel Refer to Section 2 of this manual for further information 4 3 1 4 Metering and Status The Metering Fun
102. Figure 5 10 Select the RIGHT ONLY position on the stereo source selector Adjust COMP HF TILT R7 on the RX Audio Power Supply board for maximum separation between 1 and 5 kHz Adjust DELAY EQ R111 on the Audio Power Supply board for maximum separation between 10 and 15 kHz See Figure 5 10 Using the SAVE A function on the audio analyzer store this waveform Verify that the separation meets specification between 1 kHz and 15 kHz Stereo separation Measurement of the worst case ratio in dB of residual signal in the stereo demodulated right channel referred to the demodulated left channel with a left only driving signal for frequencies between 30 Hz and 15 kHz the procedure is repeated for right to left channel separation 4 Connect the spectrum analyzer to the right output of the stereo demodulator Select the RIGHT ONLY position on the stereo source selector Adjust the step and variable attenuators on the audio spectrum analyzer so that the waveform is at the top graticule See Figure 5 10 PCL6000 602 13375 01 Moseley PCL6000 5 19 Select the LEFT ONLY position on the stereo source selector Verify that the separation meets specification between 1 kHz and 15 kHz Vert 10 dB div Horz 2 KHz div REFERENCE LEVEL IRE E oes TETT TP MD1042 Figure 5 10 Swept Separation Waveform Note The COMP HF TILT and DELAY EQ module affect both the left and right channel separation Paragr
103. IF ADJ MONO Mono IF Filter Adjust Determines selectivity and distortion C22 specifications OUT LVL FL6 Output Level DC voltage sample of 3rd LO at 13 7 MHz 0 3 1 2 VDC 5 4 9 Preamp 1st Mixer 950 MHz PCL6060 RF ATTEN ADJ R13 Sets the value of front end attenuation up to 15 dB RF ATTEN LVL TP1 Indication of relative attenuation 0 VDC max atten 70 MHZ OUTPUT ADJ L3 Set for peak level of 1st IF output in this module 5 4 10 FM Demod PCL6030 6060 LOG GAIN ADJ R67 Log Gain Adjustment Calibrates the RF LVL meter function With 10 mV of signal applied to the RF input SIG LVL on the Audio Power Supply board should be adjusted for a reading of 3K on the middle scale The input should then be reduced to 100 mV and the LOG PCL6000 602 13375 01 6000 LOG LVL DEMOD LVL TP2 MUTE INDICATOR CR6 MUTE THRESHOLD ADJ R22 BB LVL ADJ R10 BB LVL TP1 5 43 GAIN ADJ on the FM Demod should be adjusted for 100 on the middle scale The 3 10 30 100 300 1 K and 3 K levels should be checked to ensure that the meter reads between the upper and lower line on the meter for each range As a general rule SIG LVL is used to adjust the full scale or 3 K reading and the LOG GAIN ADJ on the FM Demod module is used to adjust the linearity in the 100 to 300 mV range Log Level Test Point A DC test point used to monitor the first stage of the meter log amplifier
104. L 18 138 NOLVa3dO 103 2 35 2329 923 Anu NT id 32V JM3LNI 3NNVHOIL TON ot ee TEN ars UN EN IN IN L 193130 3991 VZd Bd Tid OL SIV AINI EE An Gs as 1HNDL lt CON 8 wu ALT na ur 98 8 612 913 TU Z 5 1980 2 6 ANT SRI TVU Vd SH SINE PCL6000 602 13375 01 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 7 56 15v lt FREQ SWITCHNG CONTROL PCL6000 602 13375 01 Schematic and Assembly Drawings 600 10228 01 Rev K Receiver RF Module Schematic p 2 of 4 R22 R30 49 8556 8607 22 5 040 040 082 C63 0123 J3 JH L2 L5 L7 18 7 57 Moseley PCL6000 2319346 36IMHIHLO SS3N SILON 003 Sv 3901 1831 NI 193138 V 12955 DZ 1038 SV 3317141809 wgndl m 1521 199125 N LA 24 d u 888984123 98 7910 SID 9012 8102 BB 7982 FNI NI USS QSTWIGNI LON IN 14 056 008 un Whe N TE sana x vos 490 mm ator mor 1 Bu a wes fosser m m utu esu
105. L6000 602 13375 01 Moseley PCL6000 5 29 Synthesizer Frequency Calculation Example If larger than 64 MHz put S4 1 in 1 position and go to step 3 Subtract 64 MHz from synthesizer frequency 95 600 MHz example frequency f 95 600 64 000 31 600 MHz result See Table 5 2 below S1 column Find largest entry which is less than or equal to result A 28 0 lt 31 6 therefore 51 7 Subtract 51 frequency from result 31 00 MHz 28 00 3 600 MHz result See Table 5 2 below S2 column Find largest entry which is less than or equal to result B 3 50 lt 3 60 therefore 52 E Subtract S2 frequency from result B 3 600 MHz 3 500 100 MHz result See Table 5 2 below S3 column Find largest entry which is less than or equal to result 100 100 therefore S32 4 Any remainder is obtained by offsetting the reference oscillator Figure 5 13 Synthesizer Frequency Calculation Example 5 3 9 5 Multichannel Option The Multichannel System has been aligned to operate within the programmed channel frequency bandwidth specified for your system To operate at another non programmed frequency be sure itis within the existing bandwidth of your system The system data sheets supplied with your unit PCL6000 602 13375 01 5 30 Alignment contain valuable information for alignment and frequency changes in the field Be sure to have these at hand when contacting Moseley
106. Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet F2 ON S43 Switches on the F2 AFC adjustment capacitor active F2 LED CR5 Indicates the F2 AFC adjustment capacitor is active S4 4 Switches the FIX adjustment capacitor active LO2 LVL TP2 LO2 level test point DC level 0 9 VDC that represents the detected relative output of the FMO oscillator FREQUENCY SELECTOR SWITCHES 54 1 Programs the 64 MHz step size of the synthesizer 51 Programs the 4 MHz step size of the synthesizer S2 Programs the 250 kHz step size of the synthesizer S3 Programs the 25 kHz step size of the synthesizer 5 47 IF Demod PCL6020 1ST 10 7 MHz IF ADJ C13 IF Adjustment Adjust for minimum distortion 2ND 10 7 MHz IF ADJ C18 IF Adjustment Adjust for minimum distortion Note The 102 FREQ ADJ and the 1st 10 7 MHZ IF ADJ and 2nd 10 7 MHz IF ADJ interact See paragraph 5 3 6 Distortion Alignment for additional information 70 MHz BPF ADJ Bandpass Filter Adjustments The alignment of the 70 MHz C41 C44 C47 bandpass filter can be checked indirectly by verifying the receiver noise performance to within 20 uV of the value specified on the final test data sheet included in this manual See paragraph 5 3 2 Receiver Sensitivity PCL6000 602 13375 01 5 42 Alignment MUTE THRESHOLD R18 Mute Threshold Adjust Adjusts the mute logic threshold thr
107. MUX ch 2 level adjustment Sets the transmitter deviation for the MUX ch 2 input The normal input is 1 5 Vp p at 185kHz Main carrier deviation normally is 7 5 kHz PHASE SELECT E2 Jumper used to select the phase of the modulation Position A is in phase and position B is 180 degrees out of phase MONO LVL SELECT E6 Hard wire jumper used to select various input levels and impedances See the table referenced in the schematic PCL6000 602 13375 01 6000 75 PRE EMPHASIS 5 F1 R77 F2 R78 15 kHz LPF E4 FA R76 FB R75 FC R49 LF TILT R47 LPF GAIN R45 MONO COMP SELECT METERING COMP PGM MTRG R201 MONO PGM MTRG R202 DIG PGM MTRG R203 REFL PWR R161 FWD PWR R162 PA CURR R163 IPA LVL R164 AFC LVL R165 LO1 R166 MUX R159 45V R157 412V R155 415V R151 15V R153 METER BALLISTICS R286 METER ZERO R131 POWER SUPPLY 412 V ADJ R6 CONTROL TPT THRESHOLD 138 5 35 Jumper to enable IN or disable OUT the pre emphasis network E5 mono only Adjustment for lower break frequency of pre emphasis factory set Adjustment for upper break frequency of pre emphasis factory set Jumper select for monaural low pass filter IN OUT Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Compensates fo
108. N 5310 7 89 Sv 901 1521 122125 gt 5 S04 04034 SV 3314 1594 weer wooly UDS 1531 193125 2209 VY Ae is a at SA Sov 213 048 DUH 413 2 0 NET OSII 909 1000 962 580 211 03TINISNI LON IN 21 A ZHN 096 008 E 2100 2 E sse x vos w ros sen 2809 st mma KIRSTEN LENE GENDE NHO 0 029 902 2 25 03 dor ad ador zum 096 008 4 197 r A ec 2 62 eb T ee T T B x 8 18 8 3 x2 OG 2 E23 8 8 6000 600 10228 01 Receiver RF Module Schematic p 3 4 PCL6000 602 13375 01 7 90 Schematic and Assembly Drawings COAX BYPASS BYPASS 181 IF 360 360 360 36D INSTALLED 12 N A RFN XI RFN XI RN XI ist MIXER 5060 950 330 450 MHz 228 NHz 1 704 6020 6030 850 NHz 5 8 1 g t 8 5 lt 2 fa S dites 33 z 55 600 10228 01
109. NI SJNTVA MDISISZU L ole OL L ud OL MAHL 18 138 NOLVa3dO 103 2 35 2329 923 Anu NT id 32V JM3LNI 3NNVHOIL TON ot ee TEN ars UN EN IN IN L 193130 3991 VZd Bd Tid OL SIV AINI EE An Gs as 1HNDL lt CON 8 wu ALT na ur 98 8 612 913 TU Z 5 1980 2 6 ANT SRI TVU Vd SH SINE PCL6000 602 13375 01 600 10228 01 Rev K Receiver RF Module Schematic p 1 of 4 7 124 Schematic and Assembly Drawings 15v lt FREQ SWITCHNG CONTROL 5 a i E IIS 5 8 22 seal 884365 2 600 10228 01 Receiver RF Module Schematic p 2 of 4 PCL6000 602 13375 01 7 125 Moseley PCL6000 2319346 36IMHIHLO SS3N SILON 003 Sv 3901 1831 NI 193138 V 12955 DZ 1038 SV 3317141809 wgndl m 1521 199125 N LA 24 d u 888984123 98 7910 SID 9012 8102 BB 7982 FNI NI USS QSTWIGNI LON IN 14 056 008 un Whe N TE sana x vos 490 mm ator mor 1 Bu a wes f
110. OILVTAZA ax 8 4 410 NOLLVIATE 88509 00 d dAri NS AGE Stu 25 2 sit vaere 15 265 85 i 6 on pg Hu YDSENZ 2 s lt ub ES 9 21227 P 4m 4 L r dl 292 7 idl os m BAN 3701 P TAN INIS 40904 XL B 380 2 db pe NEN g 8 i AL 89 DL x elo NF AMMEN 183 00 3 M alt 28 HEIINTI anvassva n 201271907 UTTAMANV ISA 91B7387 Rev F FM Demod 6030 Schematic PCL6000 602 13375 01 Moseley PCL6000 7 65 20B2949 Rev G FM Demod 6030 Assembly PCL6000 602 13375 01 7 66 Schematic and Assembly Drawings 7 3 PCL 6000 950 MHz STD pm c LEVEL Transmitter Audio Power Supply Schematic 918744 D Transmitter Audio Power Supply Assembly 2083023 D 6020 Receiver Final Assembly 21828911 D 6030 Receiver Final Assembly 00 21828921 D 6060 Receiver Final Assembly 21B2015 D Receiver Audio Power Supply Schematic 600 1071001 Receiver Module 6020 6030 Assembly 880 0347001 J Receiver RF Module 6060 Assembly 930 03595 01 J Preamp tst Mixer 6060 Schematic 7 91072742 4 Preamp 1st Mixer 6060 Assembl
111. OSS DAMAGE OR EXPENSE DIRECTLY OR INDIRECTLY ARISING FROM THE USE OF EQUIPMENT PURCHASED FROM MOSELEY ASSOCIATES INC PCL6000 602 13375 01 Moseley PCL6000 FCC Notice Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Any external data or audio connection to this equipment must use shielded cables PCL6000 Manual Dwg 602 13375 01 Revision Levels SECTION REV ECO REVISED RELEASED PCL6000 602 13375 01 Moseley PCL6000 Table of Contents 1 SYSTEM CHARACTERISTICS 2 4 2 222 1 1 1 1 Introducti suyun a a anu 1 1 1 2 System 1 1 1 3 System Specifications T 1 3 1 PCL6020 PCL60
112. PA FL11 is a three pole helical filter that provides the necessary spurious rejection for the RF module The output stage AR5 operates in compression to minimize any changes in gain over a wide temperature range An output power detector C124 CR16 R85 C125 is provided for the IPA Relative power is detected and relayed to the Audio Power Supply board This voltage should be approximately 2 volts The output of the RF module is sent to the Doubler Assembly which multiplies the modulated signal X2 to bring the carrier to the 850 MHz nominal operating frequency The output of the doubler is filtered by an external 5 pole interdigital coupled resonator filter to select the appropriate harmonic before being applied to the RFA see system block diagram in Section 1 PCL6000 602 13375 01 4 23 RF Amplifier 4 2 3 1 RF Amplifier 950 MHz The RF Amplifier module is a three stage power amplifier designed to produce 6 watts nominal output power over the 890 960 MHz band when driven with a 16 dBm nominal input signal The heart of the module is a high gain UHF power amplifier hybrid device AR1 that exhibits excellent stability and ruggedness AR1 provides 22 dB of gain that is factory set in the transmitter for 6 watts by adjustment of R1 Field adjustment of R1 is not recommended since other design considerations will be compromised i e DC power consumption temperature stability efficiency etc CAUTION Power must be limited t
113. R16 R17 and C10 provide a fast attack slow release 1 ms and 1 5 seconds respectively to and from the mute mode to eliminate thumps The mute signal is brought out on J1 10 and J1 11 4 37 Adjacent Channel Filter PCL6060 The Adjacent Channel Filter is an elliptical low pass baseband filter that attenuates any high frequency signals that could be demodulated by the FM Demod due to adjacent channel PCL6000 602 13375 01 interference These signals can cause slew rate limiting in successive baseband processing circuits The filter module is jumper programmable E1 and E2 for composite or mono operation 4 3 8 Channel Control Board Multichannel Option The Channel Control Board is used to control the RF module frequency selection provide front panel display and implement the remote control facilities for channel selection The transmitter version indicated by 1 provides gain compensation for the FMO modulation sensitivity variation with frequency change IC 04 selects either the front panel channel select switch 51 or the CHANNEL REMOTE INPUT P1 1 2 3 4 providing a BCD output to the address lines of the EPROMs U1 02 U3 for channels 0 15 The remote input is toggled active by the REM ENABLE line P1 5 which also controls the RMT LED on the display DP upper left Board mounted INTERNAL MODE switch S6 emulates the remote input function for internal security lockout of the front panel channel selec
114. R208 MONO HF TILT is used for monaural operation The output of U2 is split into low frequency audio and high frequency mux signals Jumpers E1 and E6 select the composite high pass MUX filter or the monaural high pass MUX filter and route the audio to the appropriate processing circuitry The high pass filtered mux signal is buffered by 03 which has a gain adjustment R12 LVL Jumpers E7 and E8 select the composite or monaural MUX low pass filters that improve selectivity performance in the MUX channel Buffer U4 drives the MUX output and provides a metering point The composite signal is processed by U5 where R61 COMP LF TILT is used to set the low frequency gain compensation The seven pole elliptical composite low pass filter 70 76 L9 L11 attenuates MUX signals and high frequency distortion products Buffer U6b isolates and controls the impedance as seen by the filter U7 is an all pass delay equalization circuit to correct for IF response and optimize stereo separation U6a is a summing amplifier for the delay equalizer and R111 DELAY EQ optimizes the circuit for each receiver The audio is monitored at this point for metering Jumper E9 bypasses the composite LPF and delay equalizer for digital STL applications Jumper E5 selects the audio for composite or monaural operation PCL6000 602 13375 01 The monaural signal is processed 08 which is an active 75 ms de emphasis network Adjustments F1 R23 and F2
115. R22 accurately set the de emphasis curve for optimum response Jumper E2 enables IN or disables OUT de emphasis The mono signal is optionally routed through a seven pole active filter U9 U10 and U11 with a 15 kHz cut off Adjustments FA R30 FB R78 and FC R82 are used to tune the roll off of the filter and align the phase linearity of a dual mono STL link MONO LF TILT R88 compensates for low frequency tilt caused by IF filter non linearities LPF GAIN R89 sets the overall mono low pass filter unity gain Jumper selects the active filter to be in or out of the mono audio processing path Amplifier U12b enables monaural program level adjustment with R98 MONO PGM LVL The program level is metered at this point and R90 MONO MTRG compensates for level changes between composite and monaural system switching U13 and U14 comprise an active balanced output driver stage capable of 10 dBm audio power 433 2 Receiver RF Module 4 3 2 1 2nd LO Synthesizer The 2nd LO Synthesizer consists of three main subgroups the RF group the digital group and the loop filter The RF group includes the voltage controlled oscillator VCO buffer reference oscillator and low pass filter The digital group includes a dual modulus prescaler and an integrated PLL IC that provides multiple functions to be described later These three groups provide an RF signal source that has good short term stability low noise and is tunable over a wide
116. REM ENABLE CHANNEL O O x x O x x O O x x O O x X X X X X X X X X X X X X X X X O OO O OO OO x x x x x x x x O x x x x O O O x x x x OS BON DE x NON gt open circuit x contact closure PCL6000 602 13375 01 Moseley PCL6000 3 1 3 Operation 3 1 Introduction This section describes the controls and adjustments of a PCL6000 system that the user will encounter in normal operation and initial setup Front panel metering and controls as well as rear panel connectors are shown and described Standard single channel STL and Multichannel configurations are discussed and the appropriate panel diagrams can be found in the corresponding figures 3 2 Transmitter Operational Controls 3 21 Transmitter Front Panel The PCL6010 transmitter front panel standard is depicted in Figure 3 1 The meter functions and scales are described in Table 3 1 The top scale is calibrated in dB below is a 0 to 25 linear scale On the bottom is a center arc for relative indications The meter is an absolute value peak reading type with fast ballistics since the purpose of the meter is to observe the peak values of modulation which affect the deviation of the transmitter AFC LVL LVL LO LVL PA CURRENT AFC LOCK RADIATE OPERATE STANDBY PCL 6010 Aural STL Transmitter 45V FWD PWR e 12V R
117. RF Level Accuracy 3 5 GB 7 to 47 dBm 4 0 dB 74 to 137 dBm Output Impedance 50 ohm FM Deviation BW DC 250 kHz Mini Circuit 2AD 1 Audio Hewlett Packard 204C Oscillator Frequency Range 100 2 200 kHz Output Impedance 600 ohm PCL6000 602 13375 01 5 2 Alignment Instrument Suggested Model amp Critical Specifications Distortion Analyzer RF Spectrum Analyzer Audio Spectrum Analyzer Power Meter and Sensor Stereo Generator Stereo Demodulator Hewlett Packard 339A or Tektronix AA501 w SG5050 and TM503 Main Frame Residual Noise 92 dB 80 kHz Input Impedance 100 ohm shunted by less than 100 pF Accuracy 20 Hz 20 kHz 2 10 Hz 110 kHz 4 Oscillator Frequency Range 10 2 110 kHz Output Level Vnus into 600 ohm Distortion 10 Hz 20 kHz 95 dB 0 0018796 THD Hewlett Packard Model 8559A with 18IT Display Frequency Band 0 01 3 GHz Dynamic Range 0 01 70 dB Display Range Log 10 dB and 1 dB div Display Accuracy Log gt 2 full range Input Impedance 50 ohm SWR 1 31 10 dB input attenuation Tektronix 7L5 with Option 25 L3 Plug in 7603 Main Frame Input Impedance 1M ohm 29 pF Input Frequency 10 Hz 500 kHz Display Range 80 dB log 10 dB div Hewlett Packard 435A with 8481A Power Head Accuracy 1 of full scale Power Range 25 dBm uW to 20 dBm 100 mW full scale Moseley SCG 9A or equivalent Stereo SNR 75 dB Separation 55 dB THD 0 1 or less Belar Stereo Modulation
118. RT T Tu v mm p Linn AG OO den In OL de m a meg GASSER 20D3023 Rev D Transmitter Audio Power Supply Assembly 7 7 93323535 35 MAHIO SSTINN SILON OS SJNTVA LIVA 4 1 SNHO NI NOLISIS3H 1 ale OL v v6 1 78 138 4 QL S 16 135 NOUVe3dO TINNVHILLTNN 03 Z 10999 0 080 1 99 8 20900 066 96 675 4 HOTT E mene bee AZL 1 TENNYHOILTAN AS AS A 30 5907 038 A 2 15 ale BZd NZd Td OL 83214131 N gt in uz Xm eet ON X501 24V Tey ASt ta ror 0 un 21 d A lt COA AL ph T o gt PA 2 BTS AL OV vH Yu n O 2 0 Bd URL Sov EDV SAL Moseley PCL6000 PCL6000 602 13375 01 600 10227 01 REV H Transmitter RF Module Schematic 1 of 4 Schematic and Assembly Drawings 7 8 v N adze 15 sco szo 2 gt 83119 SSvd MO 852 089 00 Su EGA gpu ZTu 5 0 0 n Lr ow 241 38 090 200 SVE
119. Schematic p 2 of 4 PCL6000 602 13375 01 7 111 6000 U31423dS 55377 SILON Wd SV 5 898 13 188 OI EXEC 381 1631 19139 1912 100 9613 9013 1015 862 862 3 240802 OL 038 SV 31113 150 ugpopt 01 804 1931 NI 193135 288 Q3TWIBNI LON IN oor m s moszz m fo m ees mw iw sumo oez o ocr 0 3 an aeeoe zoe om Dre oorr ores 969 ese bros mor age ones nee 224 ves pror ve A 096 008 210 ord olg ig 1 3 d ps WEI 600 10227 01 REV H Transmitter RF Module Schematic p 3 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 112 11 483 188 12 41 wee vn au abl ETG vata won ar sre on meo se socer mem ae USTWLSN 544113 5310 08 09 corsa osa 08 08 081 991 uten wa en 1 XN3 BNS ZHN 022 SNS SSVGAB XVOD NHON3Z 21 8 N N THN
120. User Manual Moseley PCL 6000 Doc 602 13375 01 May 2003 Moseley PCL6000 WARRANTY All equipment designed and manufactured by Moseley Associates Inc is warranted against defects in workmanship and material that develop under normal use within a period of 2 years from the date of original shipment and is also warranted to meet any specifications represented in writing by Moseley Associates Inc so long as the purchaser is not in default under his contract of purchase and subject to the following additional conditions and limitations 1 The sole responsibility of Moseley Associates Inc for equipment conforming to this Warranty shall be at its option A to repair or replace such equipment or otherwise cause it to meet the represented specifications either at the purchaser s installation or upon the return thereof f o b Santa Barbara California as directed by Moseley Associates Inc or B to accept the return thereof f o b Santa Barbara California credit the purchaser s account for the unpaid portion if any of the purchase price and refund to the purchaser without interest any portion of the purchase price theretofore paid or C to demonstrate that the equipment has no defect in workmanship or material and that it meets the represented specification in which event all expenses reasonably incurred by Moseley Associates Inc in so demonstrating including but not limited to costs of travel to and fro
121. a signal to the power supply to turn off the 12 5 VDC supply 22 VDC for 1 7 GHz to the and RFA causing the transmitter to stop radiating Remote control functions are implemented in this circuitry Metering and Status The Metering and Status circuitry on the Audio Power Supply board conditions the various system parameter samples for accurate meter indications and drives the status LEDs on the front panel Remote status indications are also provided by this circuitry Power Supply AC The Power Supply section of the Audio Power Supply board converts any of four AC input voltages 100 120 220 240 into the five regulated DC voltages required for the operation of the transmitter The outputs are 15 15 and 5 for most of the system electronics high current 12 5 VDC 22 VDC for 1 7 GHz supplies the RFA A regulated 12 VDC supply powers the crystal ovens in the 1st LO and the FMO Synthesizer Power Supply DC Option Transmitters configured for DC operation only 12 24 and 48 VDC have internal switching power supplies to provide the system voltages These supplies can be isolated from chassis ground to allow negative DC source operation The RFA supply may be powered directly from the battery depending on the primary DC source PCL6000 602 13375 01 1 8 System Characteristics Multichannel Operation Option The Channel Control board is pre programmed to select the transmitter carrier frequen
122. aphs 3 and 4 may be repeated to assure optimum performance on both channels 5 Connect the audio output of the distortion analyzer to the stereo source selector Connect the left output of the stereo demodulator to the input of the distortion analyzer Set the frequency on the distortion measurement test set to 1 kHz Select the LEFT RIGHT position on the stereo source selector Adjust the output level on the distortion measurement test set for a reading of zero dB on the top scale of the transmitter Using the METER FUNCTION switch on the receiver select the LVL position and verify that the meter reads within 1 dB of the transmitter program level Adjust the input controls on the distortion measurement test set for a zero dB reference Set the frequency on the distortion measurement test set to 30 Hz Verify that the reference on the distortion measurement test set is 0 5 dB Select the RIGHT ONLY position on the stereo source selector Using the input attenuator on the distortion measurement test set measure the separation Adjust COMP LF TILT R61 on the RX Audio Power Supply board for maximum separation PCL6000 602 13375 01 5 20 Alignment Verify the separation at 50 100 and 500 Hz 6 Connect the input of the distortion analyzer to the right channel of the stereo demodulator Position the input range and relative ADJ controls on the distortion analyzer for a zero dB reference Select the RIGHT ONLY position
123. atic and Assembly Drawings 1 2 FLAGS THIS PAGE SEEE PAGE 3 FOR NOES 91 7444 Transmitter Audio Power Supply Schematic p 3 of 3 Moseley PCL6000 7 71 2083023 Rev D Transmitter Audio Power Supply Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 72 034 355 JSMUIHLO SSN SILON IAV SJATVA XE 9 1 NI JUV SONA L sele OL 9 95 NAHL 1 76 135 edu OL t NAHL 15 135 SNOUVEIDD 03 7 0 8 4 0 086 26022 1 88 1 10 28 60 086 2 8 096 10 299 0 0 8 2 19 21550 0 6 0052 5 Ast WRF L 444 OLVT1DS0 JONIHIHIY 2222222222732 Loo bito 82 yy Pb ar 8 LN IN SN PN 103134 01 A 78 824 8 4 Tid DL 5 dn VUL ZHNOL NI u 95389 en ir uo wa ou maja 10 sb nma E 142 109 1260 25 19 DE SAL FVT TENT SH WHOLE SINT 600 10227 01 REV H Transmitter RF Module Schematic p 1 of 4 PCL6000 602 13375 01 7 73 Moseley PCL6000 NHS UM N 3990 01 N O 34745 nn 3822 ewvawvis Sco ana 2 083 83 108
124. ator for a frequency that is 70 MHz PCL6020 or MHz PCL6030 6060 above the frequency and for an output of 10 dBm Using the RF spectrum analyzer position the switches on the adjustable attenuator for an output level of between 20 and 25 dBM at 70 MHz PCL6000 602 13375 01 5 32 Alignment Reconnect the adjustable attenuator to the IF Demod Adjust the oscillator output on the distortion measurement test set for a frequency of 1 kHz and a level of 1 25 VRMS 3 5 Vp p Distortion and AFC Level Alignment AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time and tune AFC C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher Using the multimeter monitor FL1 AFC Level and adjust AFC so that the voltmeter reads 7 VDC Using the distortion measurement test set verify that the baseband output of the IF Demod is between 1 0 and 1 5 Measure the distortion of the output of the IF Demod and adjust the Varicap Bias adjustment on the FMO R37 for a minimum distortion reading Note Normally there are two setting of the Varicap Bias adjustment that will obtain distortio
125. available through the same telephone number from 5 00 p m to 10 00 p m Pacific time Monday to Friday and from 8 00 a m to 10 00 p m Pacific time on weekends and holidays Please do not call during these hours unless you have an emergency with installed equipment Our representative will not be able to take orders for parts provide order status information or assist with installation problems PCL6000 602 13375 01 6 2 Customer Service 6 3 Factory Service Arrangements for factory service should be made only with a Moseley technical service representative You will be given a Return Authorization RA number This number will expedite the routing of your equipment directly to the service department Do not send any equipment to Moseley Associates without an RA number When returning equipment for troubleshooting and repair include a detailed description of the symptoms experienced in the field as well as any other information that well help us fix the problem and get the equipment back to you as fast as possible Include your RA number inside the carton If you are shipping a complete chassis all modules should be tied down or secured as they were originally received On some Moseley Associates equipment printing on the underside or topside of the chassis will indicate where shipping screws should be installed and secured Ship equipment in its original packing if possible If you are shipping a subassembly please pack it generous
126. bit C1 MOD2 adjustment is active LED indicates EPROM output bit CO adjustment is active Short circuit this test point to turn on all segments display 8 of DGT1 Modulation input to control board 3 5 Vp p nominal Modulation adjustment 1 set active by EPROM or CHNL ZERO programming PCL6000 602 13375 01 5 44 Alignment MOD2 LVL R13 MOD3 LVL R14 MOD OUTPUT TP2 INTERNAL REMOTE ENABLE S6 1 CHNL SELECT 56 2 S6 3 S6 4 56 5 Modulation adjustment 2 set active by EPROM or CHNL ZERO programming Modulation adjustment 3 set active by EPROM or CHNL ZERO programming Modulation output to transmitter RF Module 3 5 nominal When set to ON provides internal front panel lockout of the channel select function BCD 85 bit to set channel number when INT RMT ENABLE is 128 BCD 4 s bit to set channel number when INT RMT ENABLE is ON 1 4 BCD 25 bit to set channel number when INT RMT ENABLE is 122 BCD 15 bit to set channel number when INT ENABLE is 121 CHANNEL ZERO PROGRAMMING FIX F2 F1 MOD1 MOD2 MOD3 N A 64 MHz 4 MHz 250 kHz 25 kHz PCL6000 602 13375 01 Sets FIX capacitor in RF Module active 1 ON Sets F2 capacitor in RF Module active 1 ON Sets Ficapacitor in RF Module active 1 ON Sets modulation adjust MOD1 active 1 ON Sets modulation adjust MOD2 active 1 ON Sets modulation adjust
127. ble or hidden immediately file a claim with the carrier Keep all packing materials at least until the performance of the system is confirmed If possible save all packing materials in case the unit must be shipped in the future We recommend removal of the top covers of both the transmitter and receiver for a brief inspection of the internal components Verify that assemblies and cables are mechanically secure Check also for socketed components that may have been jarred loose or partially dismounted This is a good time to familiarize yourself with the various assemblies and modules using the Block and Level diagrams Figures 1 2 through 1 4 and the drawings of Section 7 After the internal inspection replace the top covers CAUTION Do not attempt any adjustments of any kind until the nature of each adjustment is understood Do not apply power to the receiver until the procedure in Section 2 2 1 is completed Do not apply power to the transmitter until the procedure in Section 2 2 1 is completed and a proper load is connected to the RF output Do not remove the covers on the transmitter RF Amplifier module 2 2 Power 224 ACLine Voltage Selection WARNING Failure to ground the third lead of the input power cord may result in hazardous shocks to personnel The transmitter and receiver each have the capability of operating at one of four nominal AC power source voltages 100 120 220 or 240 VAC 50 60 Hz The units are shipped for 12
128. catastrophic failure When PCL6000 Receiver is used with a 606 PCL600 PCL505 or PCL303 receiver transfer panel such as a TPR 2 must be used to accomplish automatic switchover and should be mounted between the two receivers Receiver automatic switchover interconnections are detailed in Section 2 9 Main Standby Interconnect PCL6000 602 13375 01 2 6 Installation When two transmitters are in a system at a site an automatic transfer panel such as the TPT 2 should be mounted between them The TPT 2 will allow interconnection of a PCL6000 with another PCL6000 PCL600 PCL606 PCL505 or 303 transmitter and can provide automatic switchover in the event of a detectable failure in the transmitter as shown in Section 2 9 1 Transmitter Interconnect 2 5 Antenna Installation The installation of the antennas and associated feed lines determines to a large extent the long term reliable operation of the STL Experience has indicated that a reasonably clear path having a 0 6 Fresnel zone clearance along with good feed line installation results in a highly predictable signal level at the receiver The appendix contains a series of instructions calculation sheets typical gain and loss characteristics and nomographs to enable the received signal level to be predicted Since the PCL6000 has a signal strength meter it is possible to determine the quality of the antenna installation and path compared to the calculations Experie
129. composite only Using the receiver meter as a reference on the Audio Power Supply board adjust MUX 2 Level Adjust R40 for the reading noted in paragraph 8 The meter reading on the transmitter front panel should be between 6 and 8 on the lower scale 602 13375 01 Moseley PCL6000 5 13 Troubleshooting 1 When aligning systems as dual or redundant installation one transmitter should be used as a reference In this case the second transmitter would be aligned using the first receiver as a reference The second receiver would be aligned using the first transmitter as a reference As a final verification the second transmitter would be checked using the second receiver Using any combination of transmitter and receiver the composite band should be flat within 50 1 dB The results from the MUX band measurements should be within 10 The MUX output is lowest when the carrier center frequency of the transmitter and receiver are identical 5 35 Ultimate Signal to Noise Ratio Description The STL ultimate wideband 50 Hz to 15 kHz SNR is verified using a distortion analyzer The receiver SNR quieting is verified during the receiver sensitivity test see Section 5 3 2 Procedure 1 Connect the equipment as shown in Figure 5 7 and set the controls on the distortion measurement test set as follows Meter Function REF Level Meter Input 10 dBm Frequency 400 Hz Set the controls on the transmitter as follows OPERATE STAND
130. ctions are selected by the front panel meter switch S2 and are calibrated by potentiometers R210 15V R212 15V 213 5V R172 SIG LVL R171 PGM LVL R170 MUX LVL R169 AFC LVL R169 LO1 R168 LO2 R167 LO3 The signals are processed by absolute value amplifier and peak detector U19 This output is followed by a buffer and meter ballistics amplifier U20 R186 METER ZERO is used to electrically zero the meter R196 METER BALLISTICS is used to adjust the meter acceleration and ballistics response Amplifier U17b drives the SIGNAL LED CR20 on the front panel SIGNAL is red when a carrier signal is not present and green when a carrier signal is present Amplifier U17a drives the AFC LOCK LED CR19 on the front panel Green indicates the 2nd LO Synthesizer is properly locked Red indicates a loss of lock Amplifier U18a drives the OPERATE LED CR21 on the front panel Green indicates the receiver is not muted as determined from the Mute and Transfer circuitry Red indicates a mute or standby condition 4 3 1 5 Audio Processor The baseband input enters the Audio Power Supply board at J1 U1 is a FET mute switch that is controlled by the Mute and Transfer circuitry and prevents high level noise from entering the audio processor under a mute condition Amplifier U2 is configured as a high frequency tilt compensation circuit for the IF filter nonlinearities R7 COMP HF TILT is used for composite operation and
131. cy by controlling the FMO synthesizer in the RF module and the modulation compensation circuitry located on board This board has facilities for over ride of the pre programmed channel frequencies Channel 0 operation Remote control of the channel selection is also provided on this board through access to the back panel Channel selection and display is accessed by the user through the front panel The Channel Control board connects to the RF module via a 25 pin D ribbon cable The RF module must be compatible for multichannel operation Please contact the factory for field retrofit of the system 1 4 2 PCL6020 PCL6030 PCL6060 Receivers The PCL6000 System has three receivers which are designed for different RF environments The PCL6060 and PCL6030 are triple conversion receivers which provide maximum out of band and adjacent channel protection The PCL6060 exhibits superior front end performance in the presence of extremely strong RF fields as it uses modules from the time proven Moseley PCL606 STL The PCL6020 is a dual conversion receiver that provides maximum performance in all but the most demanding environments Both systems are switchable to support mono or composite operation The receivers are modular in construction and operation and the system description given below follows the signal flow through the various modules Refer to Figures 1 2a b 1 3a b and 1 4a b Receiver Block and Level Diagrams Assembly drawings and schematics fo
132. d circuit designed for wideband FM demodulation at 10 7 MHz and provides a low noise low distortion output in addition to providing a variety of internal functions The input pin 1 is preceded by the 1st IF Filter FL7 which is a linear phase monolithic ceramic resonator The signal is buffered and the output pin 2 is applied to the 2nd IF Filter FL8 These filters set the selectivity of the receiver and are adjusted for minimum distortion by C13 and C18 The signal is then fed to the IF limiter PCL6000 602 13375 01 amplifier input 5 and the quadrature detector circuit pins 10 and 11 The quadrature tank circuit C26 C68 R16 L8 and L9 is singly tuned and U2 provides a distortion compensation circuit internally to achieve this simpler approach to quadrature detection The demodulated baseband output pin 15 is applied to amplifier U4 and the output is adjusted by R19 Baseband level TP2 may be used for monitoring The IF limiter also provides a logarithmic meter output pin 8 which is proportional to signal strength This output is fed to buffer amp 03 and is available on the Audio Power Supply board for metering R18 MUTE THRESHOLD ADJUST provides feedback to the mute circuit pin 13 and sets the signal mute level The mute output pin 16 is sent to the mute logic circuit located on the Audio Power Supply board The current in R17 is zero when the quad tank is tuned to center frequency therefore a demod balance voltage is
133. driven with a 20 dBm nominal input signal The heart of the module is a high gain UHF power amplifier hybrid device AR1 that exhibits excellent stability and ruggedness AR1 provides 20 dB of gain and the power output is factory set in the transmitter for 10 watts by adjustment of the 12 5 VDC supply the Audio Power Supply board Field adjustment of the power supply is not recommended since other design considerations will be compromised i e DC power consumption temperature stability efficiency etc CAUTION Power must be limited to 23 dBm 200 mW or permanent damage to the module may result PCL6000 602 13375 01 Moseley PCL6000 4 9 The PA current sample is derived across R2 plus any additional line losses to provide 0 18 volt amp sensitivity at the RFA input terminals C701 and C702 This sample is fed to the Audio Power Supply board and a test point is provided for monitoring The seven section low pass filter following AR1 is realized in a lumped element configuration utilizing air coil inductors L3 L4 L5 and chip capacitors C6 C7 C8 C9 The filter attenuates the harmonics of the final stage to better than 60 dBc per FCC requirements The dual directional coupler DC1 is fabricated using a copper shielded twisted pair coaxial line to provide high directivity therefore assuring accurate forward and reflected power sampling Detectors CR2 and CR3 provide DC meter samples for reflected and forward power res
134. e exercised during the installation of the transmission cable Never put a sharper bend radius in the cable than recommended by the manufacturer Too sharp a bend can cause internal cable damage that is not observable on the outside of the cable This damage can result in excessive loss in the cable Since the higher quality transmission cables are relatively inflexible Moseley Associates has several short pigtail assemblies available These pigtails are designed to attach to the ends of the transmission cable and allow movement of the equipment or antenna with less chance of damaging the transmission cable or the connectors on the equipment These pigtails and appropriate connectors are available in installation kits for the more popular types of transmission cable Should it be desired to mount the antenna on a series fed standard broadcast tower the required isolation can be obtained with the installation of a Moseley Associates Isocoupler at the base of the series fed antenna Isolation at standard broadcast frequencies is high and the isocoupler introduces only approximately 1 5 dB loss at the STL frequency Figure 2 3 shows details of a typical PCL6000 site installation PCL6000 602 13375 01 2 8 Installation RB 8 PIGTAIL um TYPICAL ANTENNA TYPICAL WALL ROOF FEEDTHRU R6 8 PIGTAIL gm TYPICAL ISCCOUPLER REQUIRED AM BROADCAST TOWER INSTALLATION TEXT 6000 REAR PANEL MO1D23A Fi
135. e high frequency roll off caused by the IF filtering Composite low frequency tilt adjustment Adjusts the stereo separation between 30 and 100 Hz Delay Equalizer Adjustment Adjusts the stereo separation between 10 and 15 kHz Note The COMP HF TILT COMP LF TILT and DELAY EQ adjustments are used primarily to optimize stereo separation performance In other applications such as communications HF TILT and LF TILT would be used to adjust the audio frequency response within 1 dB from 30 Hz to 53 kHz The DELAY EQ adjustment would have no effect on the frequency response performance 75 us DE EMPHASIS F1 R23 F2 R22 15 kHz LPF E3 FA R30 FB R78 FC R82 MONO LF TILT R88 FILTER GAIN R89 MONO PGM LVL R98 MONO PGM MTRG R90 MUX LVL R12 METERING AND STATUS PGM LVL R171 AFC LVL R166 LO1 R169 LO2 R168 LO3 R167 MUX LVL R170 Jumper selects the de emphasis network to be enabled SELECT E2 IN or disabled OUT Adjustment for lower break frequency of de emphasis factory set Adjustment for upper break frequency of de emphasis factory set Jumper select for monaural low pass filter Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Monaural 15 kHz low pass filter adjustments factory set Compensates for low frequency roll off of mono filter factory set Sets unity gain of mono filter Sets output program lev
136. e mixer is sent to an external 3 pole helical filter and then routed back to the RF module IPA The Intermediate Power Amplifier IPA is a four stage broadband RF amplifier AR2 AR5 with 30 dB of gain and an output power of 20 dBm The output stage AR5 operates in compression to minimize any changes in gain over a wide temperature range An output power detector C124 CR16 R85 C125 is provided for the IPA Relative power is detected and relayed to the Audio Power Supply board for metering This voltage should be approximately 2 to 3 volts The output of the RF module is sent through an external three pole helical filter before being applied to the RFA to further reduce unwanted spurious emissions see system block diagram in Section 1 4 2 2 7 Up Converter Chain Doubler Assembly 1 7 GHz The 1 7 GHz PCL6010 utilizes a doubler to achieve the carrier frequency therefore the Upconverter is nearly identical to the 950 MHz band Up Converter The Up Converter Chain consists of a mixer high gain amplifier and filters The mixer HY1 translates the FMO signal 60 80 MHz up to the RF module output frequency 850 MHz The mixer is double balanced for LO rejection and the conversion loss is 8 dB The Intermediate Power Amplifier is a four stage broadband RF amplifier AR2 AR5 with 30 dB of gain and an output power of 16 dBm FL12 is a two pole helical filter that prevents intermodulation in the I
137. e of the SNR curve with and without high level signals in the band It should be emphasized that it is not necessarily only high level adjacent channels that can cause interference There are many combinations of signals that can give rise to intermodulation distortion which will cause the resultant product to fall within the desired passband PCL6000 602 13375 01 6000 ADJACENT INTERFERENCE SNR WITH HIGH LEVEL ADJACENT SIGNALS 50 30 300 3000 30 000 01128 Figure 3 8 Typical SNR Curves 3 32 Receiver Rear Panel 3 7 PCL6000 receiver rear panel standard AC power is depicted Figure 3 9 All of the program outputs COMP MONO and MUX outputs are shown The RF signal input is a type connector The other functions on the barrier strip panel are used for standby transfer interconnections CHNL REMOTE is used for the Multichannel option All of the necessary interconnections are found in Section 2 The fused AC input is line voltage programmable see Figure 2 1 ANTENNA CHNLREMOTE e 8 592 SQUELCH XFER MUT MTR MONO COMPOSITE OUT MUX OUT ARM NC NO OUT 1 e Figure 3 9 PCL6000 Receiver Rear Panel MD1141 The PCL6000 receiver rear panel DC power option is depicted in Figure 3 10 The DC input panel is marked in the factory for the DC input voltage the internal ground configu
138. ed Frequency range 30 Hz 80 kHz 1 BNC connector PCL6000 602 13375 01 Monaural Power AC Power DC Options Dimensions Shipping Weight RF Input Connector Sensitivity PCL6020 Composite PCL6020 Monaural PCL6030 6060 Composite PCL6030 6060 Monaural Selectivity Composite Monaural Spectral Efficient Composite Adjacent Channel Level to degrade SNR by 3 dB PCL6020 PCL6030 6060 Modulation Outputs Composite PCL6000 602 13375 01 System Characteristics 10 dBm 600 ohms balanced floating Frequency range 30 2 15 kHz Barrier strip connector 1 5 Vp p 4 Kilohms unbalanced Frequency range 85 200 kHz 1 BNC connector 1 5 Vp p 4 Kilohms unbalanced Frequency range 85 200 kHz 1 BNC connector 100 120 220 240 VAC 10 50 60 Hz 70 watts Isolated ground factory standard Chassis negative ground user selectable 10 20 VDC 70 watts 18 36 VDC 70 watts 36 72 70 watts 3 5 8 9 cm high 19 0 48 3 cm wide 16 5 41 9 cm deep 12 7 kg 28 5 domestic 1 3 4 PCL6020 PCL6030 PCL6060 Receiver Specifications Type N female 50 ohm 120 mV or less required for 60 dB SNR left or right channel de emphasized demodulated 20 mV or less required for 60 dB SNR 100 mV or less required for 60 dB SNR left or right channel de emphasized demodulated 20 mV or less required for 60 dB SNR 3 dB IF bandwidth 125 kHz 80 dB IF bandwidth
139. ed Test Equipment 5 1 Table 5 2 Frequency Selection Chart 950 MHz 5 24 Table 5 3 Synthesizer Frequency Selection Switch 5 30 PCL6000 602 13375 01 Moseley PCL6000 AFC AM AGC BB BCD BPF BW Comp dB dBc dBm DP DVM EMI EPROM ESD FCC FET FM FMO FSK GHz LO PCL6000 602 13375 01 Glossary Automatic Frequency Control Amplitude Modulation Automatic Gain Control Baseband Binary Coded Decimal Band Pass Filter Bandwidth Composite Decibel Decibel Relative to Carrier Decibel Relative to 1 mW Decimal Point Digital Voltmeter Electromagnetic Interference Erasable Programmable Read Only Memory Electrostatic Discharge Electrostatic Damage Federal Communications Commission Field Effect Transistor Frequency Modulation Frequency Modulation Oscillator Frequency Shift Keying Gigahertz High Frequency High Pass Filter Integrated Circuit International Electrotechnical Commission Intermediate Frequency Intermodulation Distortion Input Output Intermediate Power Amplifier Kilohertz Light Emitting Diode Low Frequency Local Oscillator LPF MHz MAI Mono ms mW Low Pass Filter Megahertz Moseley Associates Inc Monaural Millisecond Milliwatt Moseley PCL6000 PCL6000 602 13375 01 6000 1 1 1 System Characteristics
140. ed to CR10 and CR11 through R30 closing the AFC loop The frequency stability of the FMO is maintained by CR10 and CR11 which is attached to the stripline inductor through C62 A voltage generated by the circuitry changes the capacitance CR10 and 11 which is also part of the tuning of the FMO resonant circuit Depending upon which capacitors are switched into the resonant circuit F1 C34 F2 or FIX C26 the AFC level adjustment is used to place the phase locked loop in the center of its operating control range This is indicated by a nominal 7 VDC AFC level For Multichannel operation different capacitors are switched in to maintain an AFC range between 5 9 VDC for different channel frequencies These switching networks are labeled F1 F2 and FIX A logic level of 5 VDC at the input of the buffers Q2 Q1 will connect that corresponding capacitor into the resonant circuit If the Multichannel option is being utilized in the system these settings come from the Channel Control board s programmed inputs at J11 5 18 6 and switch S4 must be disabled open circuit If the RF module is being used as a stand alone switch S4 is used to switch in the required capacitors In either case green LED indicators CR6 F1 and CR5 F2 will light to indicate which setting is active The FIX capacitor is normally used to band switch to a frequency far removed from the initial setting The lock detect signal at U1 28
141. ed to tune the roll off of the filter and align the phase linearity of dual mono STL link LF TILT R47 compensates for low frequency tilt caused by IF filter non linearities LPF GAIN R45 sets the overall monaural low pass filter unity gain Jumper E4 selects the active filter to be in or out of the monaural audio processing path Jumper selects either the monaural or composite input to the audio processor U3a is non inverting amplifier to set the program levels of the audio processor for all configurations MONO R199 COMPOSITE R28 and DIGITAL R28 The MUX inputs are summed into U3b and the levels are independently adjustable MUX1 R29 and MUX2 R40 The PROGRAM and MUX signals are summed into U2b and both levels are routed to the metering circuits at this point U2a is an inverter which is selectable E2 to match the STL link audio phase when using different receivers The baseband output is at J1 which is applied to the transmitter RF module 4 22 Transmitter RF Module 4 2 2 1 FMO Synthesizer The FMO Synthesizer consists of three main subgroups the RF group the digital group and the loop filter The RF group includes the frequency modulated oscillator FMO buffer reference oscillator and low pass filter The digital group includes a dual modulus prescaler and an integrated PLL IC that provides multiple functions to be described later These three groups provide an RF signal source that has good short term stabil
142. el of the receiver Sets the meter program level for mono operation MUX level adjustment Adjusts the MUX level output of the audio processor Normally adjusted so that 5 kHz 4 kHz mono deviation equals 1 5 Vp p at 110 kHz Adjusts the PGM LEVEL meter function 10096 0 dB AFC level metering adjust Center arc 1st LO relative level Center arc 2nd LO synthesizer relative level Center arc 3rd LO relative level PCL6030 Center arc Adjusts the MUX LVL function of the meter A reading of 5 on the lower scale equals 5 kHz of the main carrier by the subcarrier PCL6000 602 13375 01 5 40 Alignment SIG LVL R172 Used to adjust the RF LEVEL function A reading of 3 K on the center scale of the meter equals 3000 uV of input signal 5 213 Power supply metering adjustments 15V 210 15V R212 METER BALLISTICS R196 Adjusts the meter ballistics METER ZERO R186 Adjusts meter zero MUTE AND TRANSFER The Mute and Transfer section requires no adjustment If a failure is suspected in the Mute and Transfer circuitry the following information may be useful in isolating the problem 1 A mute signal from the IF Demod Mute Threshold Adjust LED red will de energize the mute relay and disconnect the composite and MUX audio outputs 2 This module may be externally muted either by a remote mute input or a transfer input from a receiver transfer panel TPR 5 4 Receiver RF Module PRESELECTOR FILTER 95
143. en 1 XN3 BNS ZHN 022 SNS SSVGAB XVOD NHON3Z 21 8 N N THN 096 008 11 cu 6 wu 0 lt me me 080 m mc mm me 090 gt sem ons HILYIANDJIdN 9 170 088 008 To Ta axz 1993 187 1931 8 27897897X E E TN Vd 4 ZHN 022 W POL Dev azt 55 xvaa 057 075 600 10227 01 Transmitter RF Module Schematic 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 43 P i 5 930 03462 013 Transmitter Module Assembly PCL6000 602 13375 01 Schematic and Assembly Drawings 7 44 DE 1902 o 1002 14191 21 1 1 49 0350395 35 4 10 SS3INTI SALON 50 S3ITIVA NOLDVAVD XS M L S3ITIVA 40156384 I 210 11415434 020 219 3 2 A A A A A A A A 5322 8 5 28 LS 5 aia l occ ooc topo S verner D N 2 20 Nay so A 2992 8 ez 00
144. enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time and both tune AFC C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher Preselector Filter 950 MHz PCL6020 6030 Filters FL 12 and FL 11 in the RF module are two and three pole helical filters with a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five adjustments should be set for a flat passband greater than 5 MHz wide Preselector Filter 950 MHz PCL6060 The filter is located under the Audio Power Supply board of the receiver see system assembly drawing The filter has a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Preselector Filter 220 450 MHz The filter is located at the rear of the receiver see system asse
145. ent of each other and is factory set for each system configuration This circuit is not installed for receiver applications PCL6000 602 13375 01 This Page is intentionally blank PCL6000 602 13375 01 Moseley PCL6000 5 1 5 Alignment 5 1 Introduction This section presents alignment procedures for the PCL6000 and a list of recommended test equipment Also included are descriptions of all module adjustments general troubleshooting information and test fixture diagrams Relevant troubleshooting information is included at the end of each alignment procedure 5 2 Test Equipment Table 5 1 lists test equipment recommended for use in the alignment procedures Equivalent items of test equipment may also be used Any test equipment that is used for RF measurements must be rated for the frequency of operation and power levels that may be encountered Table 5 1 Recommended Test Equipment Instrument Suggested Model amp Critical Specifications Frequency Tektronix DC 508A 1 3 GHz Counter For dual links on the same frequency include Option 01 Single Link 5 ppm Dual Link 0 2 ppm Microlab FXR CB 49N Coupler 30 dB 1 2 GHz 50 ohms Fixed 30 dB 1 GHz 50 ohms 20 watts Attenuator Kay Elemetrics Model 432D Adjustable 1 2 3 5 10 20 dB steps 50 ohm 1 GHz Signal Hewlett Packard Model 8640B with Options 01 amp 02 Generator Frequency Range 0 5 1024 MHz Residual FM 30 Hz 20 2 5 kHz gt 10 Hz 300 Hz 3 kHz
146. er FL1 is set by R9 The 1st 10 7 MHz IF filters FL1 FL2 and FL3 are linear phase monolithic ceramic filters that are jumper programmed for particular receiver configurations MONO WIDEBAND COMPOSITE or NARROWBAND COMPOSITE C13 C14 and C15 allow a null adjustment of the filter distortion Amplifier U2 compensates for filter losses and buffers the impedance match between the 1st and 2nd IF filters In a similar fashion the 2nd 10 7 MHz IF filters FL4 and FL5 are jumper programmed for receiver configurations MONO or COMPOSITE C21 and C22 allow a null adjustment of the filter distortion Amplifier US compensates for filter losses and buffers the impedance matching 111 and C28 form a harmonic and noise filter for the 3rd mixer U4 The input to the 3rd mixer is mixed with the 13 7 MHz 3rd LO signal to produce the 3rd IF signal at 3 MHz The 3rd LO is comprised of crystal oscillator Q4 and buffer Q5 The 3rd mixer is also double balanced and diplexed The output signal is sent to the FM Demodulator module 4 3 6 FM Demod 6030 6060 The FM Demod module performs three major functions 1 Extraction of baseband information from the frequency modulated input signal PCL6000 602 13375 01 Moseley PCL6000 4 19 2 Generation of DC metering signal proportional to the logarithm of the input RF carrier over a three decade range 3 Generation of a mute signal to squelch the receiver when the RF input signal is too low for reliable o
147. er RF output Remove RF Module from transmitter Remove the cover from component side of module a Calculate the FMO frequency as follows check the system data sheet for the exact frequency PCL6000 602 13375 01 5 26 Alignment For a High Side LO LO CARRIER FMO frequency LO freq CARRIER freq For a Low Side LO LO CARRIER FMO frequency CARRIER freq LO freq b Program the synthesizer switches S4 1 S1 S2 S3 in the RF module for the correct frequency Please refer to the Synthesizer Frequency Calculation Example in Section 5 3 9 3 4 Put meter switch in AFC LVL position and adjust AFC for centerscale on the front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When enabled LED indicator CR6 visible through the side of the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time and both tune AFC C26 fixed cap is enabled by switch S4 4 Enable this switch when operating at 950 MHz or higher 5a 950 MHz band If the new frequency is within the 940 960 MHz range there is no need to adjust the IPA and RFA filters If the new frequency is outside of this range peak the internal pc board mounted filters FL 12
148. er cord may result in hazardous shocks to personnel The AC power connector includes an RF filter The transformer primary windings support the four selectable input voltage ranges 100 120 220 and 240 VAC Operating voltage is selected by programming the line filter fuse holder on the rear panel as described in Section 2 2 1 AC Line Voltage Selection 4 3 1 2 Power Supply DC Option The receiver can be optionally configured as a DC input only system All DC systems can be input isolated for negative DC operation Jumper E1 on the DC Option Power Supply assembly PS1 selects negative chassis ground factory standard or isolated ground The back panel has a barrier strip for the DC input and is fused The value of the fuse and the system ground configuration is listed on the back panel The Audio Power Supply board is modified by bypassing the bridge rectifier and the 15 VDC regulators VR1 and VR2 The DC input from the switching supplies enters the board at P1 See the schematic for further details 4 3 1 3 Mute and Transfer The Mute and Transfer circuitry contains the necessary logic to squelch the receiver during periods of insufficient RF signal strength The receiver will mute whenever one or more of the following conditions are present 1 The signal mute line SIGMUTE P5 4 from the IF Demod module PCL6020 or FM Demod module PCL6030 6060 is at a logic low level 0 VDC The rear panel remote mute input MUT
149. erconnect 2 9 Figure 2 5 Transmitter and MUX Interconnect 2 11 Figure 2 6 Receiver and MUX Interconnect 2 12 Figure 2 7 Receiver and MUX Interconnect 2 13 Figure 2 8 Main Standby Transmitter Interconnect Composite 2 15 Figure 2 9 Main Standby Transmitter Interconnect 2 16 Figure 2 10 Main Standby Receiver Interconnect Other STL Receivers 2 17 Figure 2 11 Main Standby Receiver Interconnect PCL6000 2 18 Figure 2 12 Main Standby Receiver Interconnect PCL6000 2 19 Figure 2 13 Transmitter Remote Connector Pin Out Rev 2 20 Figure 2 14 Transmitter Remote Connector Pin Out Rev B or Later 2 20 Figure 2 15 Transmitter Channel Control Connector 2 21 Figure 3 1 PCL6010 Transmitter Front Panel 3 1 Figure 3 2 PGL6010 Transmitter Rear Panel nothin 3 3 Figure 3 3 PCL6010 Transmitter Rear Panel
150. ered with RC low pass networks to reduce EMI the meter sample output lines The final current sample 0 18 VDC Amp is provided by R4 and is metered nominal 2 2 amp The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 5 RF Amplifier 1 7 GHz The RFA module is a four stage discrete amplifier utilizing microstrip matching elements for impedance matching and tuning The amplifier provides 38 dB of gain to an output level of 6 watts The input applied at J1 is nominally 0 dBm 1 mW The first three stages are common source class A FET amplifier stages utilizing a bipolar DC bias scheme requiring the 15 VDC supply The gain of each stage is set by the gate bias adjustment The final stage is a common base class C bipolar design that is matched directly into the 7 element low pass filter The filter attenuates harmonics of the final stage to better than 60 dBc per FCC requirements The output impedance of the filter is 50 ohms The dual directional coupler is composed of two coupled line microstrip sections The forward and reflected power levels are rectified by diodes D2 and D1 respectively These levels are filtered with RC low pass networks to reduce EMI in the meter sample output lines The final current sample 0 16 VDC Amp is provided by R31 and is metered nominal 2 0 amp The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 24 C
151. eshold 20 uV input signal BB LVL ADJ R19 Baseband Level Adjust Adjust the output of the baseband including the composite and MUX levels 50 kHz deviation 3 5 Vp p BBLVL TP2 Baseband Level Test Point An AC test point used to monitor the output level of the baseband processor 50 kHz deviation 3 5 Vp p DEMOD BALANCE TP1 Demod Balance Level Is an indication of quadrature coil balance minimum distortion and or demodulator free drift 0 1 VDO 5 4 8 Double Converter LO3 PCL6030 6060 70 MHz BPF ADJ Bandpass Filter Adjustments The alignment of the 70 MHz C40 C43 C46 C49 bandpass filter can be checked indirectly by verifying the receiver noise performance to within 20 uV of the value specified on the final test data sheet included in this manual See paragraph 5 3 2 STL Receiver Sensitivity 1ST IF FLTR SELECT E2 E3 Selects proper filter for intended system application 1ST 10 7 MHz IF ADJ WB C14 Wideband IF Filter Adjust Determines selectivity and distortion specifications 1ST 10 7 MHz IF ADJ NB C15 Narrowband IF Filter Adjust Determines selectivity and distortion specifications 1ST 10 7 MHz IF ADJ MONO Mono IF Filter Adjust Determines selectivity and distortion C13 specifications 2ND IF FLTR SELECT 4 5 Selects proper filter for intended system application 2ND 10 7 MHz IF ADJ COMP Composite IF Filter Adjust Determines selectivity and distortion C21 specifications 2ND 10 7 MHz
152. est set the distortion reading should now be less than 0 2796 at 15 kHz If it is not additional troubleshooting will be required prior to determining the performance of the 10 7 MHz IF filters An RF input to the receiver exceeding 6 mV may cause an indication of high distortion The distortion of the Audio Power Supply board in the receiver can be tested independently by applying the output of the distortion analyzer s audio oscillator to the baseband input of the Audio Power Supply board PCL6000 602 13375 01 Moseley PCL6000 5 17 5 3 7 Stereo Separation and Stereo Signal to Noise Ratio Description The stereo separation alignment is accomplished using a stereo generator and demodulator of known quality and an audio spectrum analyzer with tracking generator TRANSMITTER STEREO GENERATOR STEREO SELECTOR SWITCH AUDIO SPECTRUM ANALYZER CAUTION Place the transmitter RADIATE STANDBY switch STANDBY until the coupler and attenuator are connected CAUTION avoid receiver damage initially set MD1041 attenuator for maximum attenuation Figure 5 9 Stereo Separation Test Setup Procedure 1 Connect the equipment as shown Figure 5 9 This test should be run flat the stereo generator pre emphasis and the stereo demodulator de emphasis should be switched out If this cannot be accomplished the system modulation reference level should be reduced to 20 dB at 400 Hz Adjust the controls on the
153. f the signal generator to 20 uV and adjust the MUTE THRESHOLD until the mute threshold LED changes from off to red PCL6000 602 13375 01 Moseley PCL6000 5 7 Troubleshooting Notes The cable between the RF signal generator and the receiver should be kept at a minimum to reduce insertion loss As an example a 3 foot cable RG 58 will cause 1 dB or 10 loss in signal at 950 MHz 5 3 3 Receiver Selectivity Description The receiver selectivity is verified using an RF signal generator Procedure 1 Connect the equipment as shown Figure 5 3 Set the controls on the signal generator as follows Meter Level Volts AM Modulation Off FM Deviation Off Frequency Tuned to the center frequency indicated on the serial number label on the rear panel Multichannel Option Tune to the channel frequency indicated on the Channel Assignments label on the rear panel Output Level 40 dBm adjust the output level for a reading of 3 mV on the signal generator meter RF On RF SIGNAL ANTENNA GENERATOR fH RECEIVER MD1036 Figure 5 3 Selectivity Test Setup Using the receiver METER FUNCTION switch select the RF LVL meter position Verify that the meter reads within the 3 K range of the middle scale Position the OUTPUT LEVEL switch on the signal generator to 100 Verify that the receiver meter reads within the uV range on the center scale Note the position of the meter reading as a reference for the
154. gure 2 3 Typical PCL6000 Site Installation PCL6000 602 13375 01 Moseley PCL6000 2 9 2 Program and Multiplex Installation Transmitter Figure 2 4 depicts the typical interconnection of a PCL6000 as would normally be found at the studio The left and right program material is first passed through an automatic gain control AGC unit to establish the nominal system levels This is followed by a frequency conscious audio limiter to prevent over modulation of the system as the result of the normal pre emphasis curve used in FM broadcasts It is highly desirable that the gain control or limiting units for each channel be interconnected so that any processing that occurs on one channel is performed in the same manner on the other channel STL TRANSMITTER MUX 1 STEREO SUBCARRIER MUX INPUT STEREO SUBCARRIER GENERATOR MUX INPUT GENERATOR L AUDIO R AUDIO AUDIO CON TROL SUBCARRIER FREQUENCY GENERATOR CONSCIOUS NOTE 1 LIMITER CONTROL TONES ASS LEFT RIGHT DUAL PROGRAM PROGRAM SOURCE PRIMARY NOTES 1 GONTROL SUBCARRIER GENERATOR MAY BE PART A REMOTE CONTROL SYSTEM 2 COAXIAL CABLE IS 18 A U OR EQUIVALENT MD1263A Figure 2 4 Transmitter PGM and MUX Interconnect Composite PCL6000 602 13375 01 2 10 Installation The limiter outputs are then fed to a stereo generator for conversion of the left and right channels into the standard FM compos
155. hannel Control Board Multichannel Option The Channel Control Board is used to control the RF module frequency selection provide front panel display and implement the remote control facilities for channel selection The transmitter version 1 provides gain compensation for the FMO modulation sensitivity variation with frequency change Mux IC U4 selects either the front panel channel select switch S1 or the CHANNEL REMOTE INPUT P1 1 2 3 4 providing a BCD output to the address lines of the EPROMs U1 U2 and U3 for channels 0 15 The remote input is toggled active by the REM ENABLE line P1 5 which also controls the RMT LED on the display DP upper left corner Board mounted INTERNAL MODE switch S6 emulates the remote input function for internal security lockout of the front panel channel selection Logic U5 decodes and detects channel address number 0 to toggle between EPROM control PROM ENABLE and on board manual programming control CHNL 0 ENABLE via switches 52 53 54 55 The EPROM outputs PROM PROGRAM are buffered by bus drivers 07 U8 and U9 The switch outputs are buffered by bus drivers U10 U11 and U12 The driver outputs are parallel connected PROGRAM OUTPUT BUS and enable bank switching of the outputs When channel number 0 is selected the switches take control and the RF module may be programmed for a user specified frequency The programming bits are assigned as shown in Table 4 1 PCL60
156. hree major functions One is to extract the baseband information from the FM carrier The second function is to generate the RF signal strength voltage that is applied to the meter in the RF LEVEL position and the third is to establish the mute or squelch threshold of the receiver The signal is first passed through a 3 MHz IF amplifier and a phase linear 3 MHz bandpass filter At this point the signal is split and sent to both the FM demodulator and the log IF amplifier For FM demodulation the signal runs through a four stage limiting IF amplifier the output of which passes on to the ultra linear pulse counting FM demodulator This demodulator is extremely wideband and adjustment free The output of the FM demodulator is low pass filtered PCL6000 602 13375 01 1 10 System Characteristics and sent to a low noise baseband amplifier which raises the signal level to a useful system level The output is then sent to the Audio Power Supply board IF Demod PCL6020 The IF Demod module provides down conversion to the second IF 10 7 MHz sets system selectivity in the second IF extracts the baseband information from the carrier provides the logarithmic RF signal strength voltage for metering and establishes the mute threshold point of the receiver Baseband Processor The main functions of the Baseband Processor circuitry on the Audio Power Supply board are to split the baseband signal into two frequency bands 30 Hz to 80 kHz for compo
157. ie M na NOILVTAZA ax 8 4 410 NOLLVLANI 58909 4 aot Ni zx 24 je to s fases U lac vice 5 205 T 409 zn 9 jun 9 5 5 ubT 9 Y E xix E7 vas 00 i 9 138 ER 281 G 1 1 Abt ZAI oos zh di Aa BAN 3701 00 aa a TAN 5 L 4 61 73 083 157 01 ee ane AR 95 VI t x gt 210 Sg Bau 09 183 2 1 5 890 x 00 184 HEIDE Era ane 20129197 UTTAMANV ISA 9187387 Rev FM Demod 6030 Schematic PCL6000 602 13375 01 Moseley PCL6000 7 131 20B2949 Rev G FM Demod 6030 Asse mbly PCL6000 602 13375 01 7 132 Schematic and Assembly Drawings 7 5 Multichannel Option DESCRIPTION REV LEVEL Channel Control Assembly 20C3104 Channel Control Schematic 917515 PCL6010 Multichannel Option 910 10121 02 PCL6020 Multichannel Option 910 08614 01 B PCL6030 Multichannel Option 910 08796 01 B NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description PCL6000 602 13375 01 7
158. ifications Repeat Steps 6 through 8 of this procedure as required to achieve the above results Using the Power Meter verify that the output of the is 2 2 dBm 5 3 11 Transmitter Troubleshooting Procedure Procedure 1 Connect the equipment as shown in Figure 5 1 and position the OPERATE STANDBY switch in the OPERATE position Check the 5 VDC 15 15 VDC 12 VDC and 12 5 VDC test points on the Audio Power Supply board Verify that the RADIATE and AFC LOCK status indicators are green The AFC LOCK indicator is controlled by the FMO The RADIATE status indicator is determined by the Radiate Control circuitry The following test points on the Audio Power Supply board should be checked a AFC LVL The AFC Level should be between 6 9 VDC and 7 1 VDC If not the FMO AFC Level should be aligned before proceeding see Section 5 3 10 b IPA The IPA Level should be greater than 1 VDC If not the following steps should be taken Verify that the 12 VDC is between 12 25 and 412 75 VDC Using the power meter verify that the input to the IPA amplifier is at least 10 dBm If it is the problem is located in the IPA amplifier Measure the output of the 1st LO and module for a value of between 5 and 10 dBm Using the power meter measure the output of the FMO for a value of 2 2 dBm PCL6000 602 13375 01 5 34 Alignment 5 4 Module Adjustments Information This section provides additional technical
159. imum insertion loss of 1 5 db This filter has superior rejection due to its mechanical implementation Preselector Filter 1 7 GHz The antenna input signal is first passed through the Preselector Filter which is a five element interdigital bandpass filter with a 20 MHz bandwidth and maximum insertion loss of 1 5 db This filer has superior rejection due to its mechanical implementation PCL6000 602 13375 01 Moseley PCL6000 1 9 Mixer PCL6020 6030 The Mixer is located in the RF module when configured as a PCL6020 or PCL6030 The carrier frequency is mixed with the 1st Local Oscillator LO1 signal to provide down conversion to the first intermediate frequency IF of 70 MHz nominal The IF signal is buffered to overcome mixer conversion loss 1st Local Oscillator 950 MHz The receiver 1st LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 330 450 MHz The receiver 1st LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 220 MHz The receiver 1st LO is identical to the transmitter 1st LO referenced in section 1 4 1 1st Local Oscillator 1 7 GHz The 1st Local Oscillator LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 102 MHz nominal The resultant multiplication factor of the LO is X16 The output 1632 MHz is externally filtered
160. ion Verify that the RADIATE and AFC LOCK status LEDs are green Using the METER FUNCTION switch select the FWD PWR position Verify that the front panel meter reads between 3 and 2 dB on the top scale Check the serial number label on the back of the transmitter for its operating center frequency The counter should indicate the frequency within 8 kHz of the specified center frequency If it does not proceed to the troubleshooting portion of this procedure and verify that the 1st LO and FMO are operating at their specified frequencies refer to system data sheet supplied with the unit While monitoring the counter adjust the transmitter FMO frequency trim adjustment for a reading of the specified transmitter frequency 200 Hz The receiver 1st LO frequency for the 950 MHz band is 1020 000 MHz 8KHz refer to system data sheet to determine exact frequency of your unit Calculate the receiver 2nd LO frequency by adding 10 700 to the 1st LO frequency and subtracting the operating frequency i e for a transmitter at 950 000 MHz the 2nd LO is 1020 000 10 700 950 000 80 700 MHz PCL6000 602 13375 01 5 4 Alignment Using the counter adjust the receiver 2nd LO frequency adjustment for a reading within 200 Hz of the frequency calculated in Step 6 Note If two STL systems are installed for redundant operation both should be aligned for frequency at the same time COUNTER TRANSMITTER SS 0 1 OUT
161. is a series of pulses at the step size rate 25 kHz when the loop is locked The low pass filter R19 and C13 provide an average voltage at 03 5 of 5 VDC when PCL6000 602 13375 01 Moseley PCL6000 4 5 the loop is locked If the loop becomes unlocked the average voltage drops to 2 5 VDC This causes the output of comparator U3 to change state which lights the red LOSS OF LOCK LED on the module Also the voltage at FL2 drops from 5 to 0 VDC causing the radiate control circuitry to put the transmitter in STANDBY The output frequency of the FMO is determined by the divider values programmed into the PLL chip U1 If the Multichannel option is being utilized in the system these settings come from the Channel Control board s parallel inputs at J11 and the internal switches S1 S2 S3 and S4 1 must be disabled S4 1 open circuit and 51 2 3 set to F If the RF module is being used as a stand alone the frequency is set by the values of switches S1 S2 S3 and S4 1 The output frequency is determined by adding the resultant frequency values set by each switch S4 1 is a one bit switch that sets 64 MHz S1 S2 and S3 are four bit switches set to a hex value 0 1 2 3 4 5 6 7 8 9 A B C D E F where corresponds to 10 15 The transmitter frequency example below illustrates the math Transmitter frequency example 1st LO 1020 000 MHz Carrier Freq 950 500 FMO Freq 70 500 MHz SWITCH SETTINGS 54 1 1 64 64 000 MHz S1 1 X
162. is composed of two coupled line microstrip sections The forward and reflected power levels are rectified by diodes CR1 and CR2 respectively These levels are filtered with RC low pass networks to reduce EMI in the meter sample output lines The final current sample 0 18 VDC Amp is provided by R5 and is metered nominal 2 2 amp The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 4 RF Amplifier 220 MHz The RF Amplifier is a two stage discrete bipolar amplifier utilizing lumped elements for impedance matching and tuning The amplifier provides 20 dB of gain to an output level of 10 watts The input applied at J1 is nominally 20 dBm 100 mW The first stage Q1 is operated class C and its input matched by C1 C2 and L1 This stage provides 12 dB of gain The output of the first stage is tuned and matched to the input of the final stage by L3 C5 and C6 The final stage is operated class C and provides 8 dB of gain L6 L7 C11 and C10 match the final output impedance into the 6 element low pass filter LB C12 L9 C13 L10 C14 The filter attenuates harmonics of the final stage to better than 60 dBc per FCC requirements The output impedance of the filter is 50 ohms The dual directional coupler is composed of two coupled line microstrip sections The forward and reflected power levels are rectified by diodes CR1 and CR2 respectively These levels are PCL6000 602 13375 01 filt
163. is derived from crystal controlled oscillator Q5 The fifth overtone crystal Y1 102 000 MHz nominal is temperature stabilized by 65 proportionally controlled oven HR1 Oscillator buffers and AR1 isolate the oscillator and amplify the signal preventing frequency pulling when adjusting the multipliers The output of the buffer is doubled in an active push push doubler The single ended input from the buffer is split into two out of phase voltages in T1 and applied to the bases of Q7 and Q8 The output of these two transistors is summed at their collectors The output of the doubler is tuned by C94 and L14 and is impedance matched to the step recovery diode multiplier by C95 and C96 The diode self bias current is determined by RT1 The step recovery diode CR14 forms the heart of a X8 multiplier C98 C99 and a microstrip element The multiplier converts the input sinusoidal signal to a stream of impulses These impulses are fed to C101 which is tuned to the desired output frequency The multiplier output is routed through an external three pole helical filter and is tuned to the LO output frequency 1632 MHz nominal The output is terminated into a 3 dB attenuator reducing the output power to that required by the 1st mixer and providing a wideband match for the filter The undesired harmonics are suppressed at least 40 dB The output power is between 5 and 9 dBm 4 3 2 6 Preselector Preamplifier 1st Mixer 950 MHz PCL6020 60
164. ise ratio for the left channel using the input range control on the distortion analyzer Using the 50 Hz high pass filter connect the input of the distortion analyzer to the right channel and repeat the test Troubleshooting The performance of the stereo generator and stereo demodulator can be verified by connecting the output of the stereo generator directly to the input of the stereo demodulator PCL6000 602 13375 01 Moseley PCL6000 5 21 5 3 8 Stereo Crosstalk Description The crosstalk measurements are made using a stereo generator of known quality a low distortion audio oscillator and an audio spectrum analyzer AUDIO IN DISTORTION MEASUREMENT SET CAUTION the transmitter RADIATE STANOBY switch in STANDBY until the coupler and ottenuoter are connected 01043 K CAUTION ovoid damage mitiolly set ottenuotar for maximum attenuatian Figure 5 11 Stereo Crosstalk Setup Procedure 1 Connect the equipment as shown in Figure 5 11 This test should be run with the stereo generator pre emphasis switched out Set the OPERATE STANDBY switch on the transmitter to the OPERATE position The RADIATE status LED should be green Using the METER FUNCTION switch select the FWD PWR position and verify that the meter of the transmitter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL position Adjust frequency
165. ite baseband signal The composite signal is then fed into the composite input of the PCL6000 The standard composite signal is unbalanced 3 5 Vp p for 100 percent modulation BNC connectors with type RG 58 A U coaxial cable are generally used for the interconnection CAUTION Never over modulate the STL transmitter as this will cause increased distortion in the received signal and possibly interference to other users in the STL band The secondary program audio is generally passed through an AGC stage and or a frequency conscious limiter into a subcarrier generator with a center frequency of 185 kHz 67 kHz for mono The subcarrier for the secondary program audio is fed to the PCL6000 MUX 2 subcarrier input with an unbalanced shielded cable RG 58 A U typical with BNC connectors An input level of 1 5 Vp p corresponds to a main carrier deviation of 7 5 kHz 6 kHz mono by the MUX 2 subcarrier Where a control subcarrier is desired a subcarrier frequency of 110 kHz 26 kHz for mono is typically used The modulated subcarrier may be generated internally in the remote control equipment as in the case of the Moseley MRC series In any case the control subcarrier is applied to the MUX 1 input on the PCL6010 transmitter at 1 5 Vp p using BNC connectors on coaxial cable RG 58 A U typical This signal will produce a main carrier deviation of 5 kHz 4 kHz mono by the MUX 1 subcarrier The composite and multiplex inputs into the PCL6010 transmitter
166. ition INT ERNAL REMOTE dip switch SW6 on the Channel Control board This switch emulates the remote control function internally and the unit will appear to be in remote control operation Switching out the INT RMT ENABLE S6 will return the receiver to front panel control PCL6000 602 13375 01 3 10 This is intentionally blank PCL6000 602 13375 01 6000 4 1 4 Module Characteristics 4 1 Introduction This section provides theory of operation for the PCL6000 modules Please refer to the listed schematic and assembly drawings for the receiver configuration PCL6020 6030 6060 frequency band of operation 950 450 330 or 220 or 1 7 GHz and Multichannel Option that applies to your system Due to the many different system configurations your particular drawing package has been supplied with the manual Figure numbers for referenced drawings can be found in the Table of Contents at the beginning of Section 7 Schematic and Assembly Drawings 4 2 Transmitter Theory of Operation 4 241 Transmitter Audio Power Supply 4 2 1 1 Power Supply AC The power supply consists of an AC power connector P1 transformer rectifier CR1 capacitive filters C4 C5 and fixed linear regulators VR2 The power supply has four output voltages 15 15 5 and 12 VDC The RFA supply is adjustable R6 and factory set to 12 5 VDC when the transmitter is radiating
167. itter 2 If the STL link fails to meet the SNR specification and the transmitter is suspected the following method may be used to help isolate the problem a Using the 80 kHz filter on the distortion measurement test set measure the baseband output of the TX Audio Power Supply board for a reading at least 5 dB greater than specified for the ultimate SNR b Substitute the 1st LO signal 1020 MHz for the 950 MHz band using an RF signal generator such as the HP 8640B at an output level of 10 dBm Substitute the signal using the RF signal generator at an RF level 0 dBm 5 3 6 Distortion Alignment Description A distortion analyzer is used to align the receiver 10 7 MHz IF filters for minimum distortion This method assumes the FMO will contribute a negligible amount of distortion to the overall reading PCL6000 602 13375 01 Moseley PCL6000 5 15 The FMO distortion can be verified independently of the receiver by referring to Section 5 3 10 FMO Adjustment SWITCHABLE ATTENUATOR DISTORTION MEASURMENT SET AUDIO IN ose OUT CAUTION Place the transmitter RADIATE STANDBY switch in STANDBY until the coupler and MD1040 attenuator are connected CAUTION receiver damage initially set attenuatar for maximum attenuation Figure 5 8 Test Setup for Distortion Alignment Procedure 1 Connect the equipment as shown in Figure 5 8 and adjust controls the distortion measurement test
168. ity low noise and is tunable over a wide frequency range Selecting the appropriate divide ratio synthesizes the crystal controlled reference oscillator and ensures long term stability PCL6000 602 13375 01 FMO consists of low noise field effect transistor Q4 in RF grounded base configuration The drain of Q4 is connected to the resonant circuit inductor and capacitors The capacitance for this circuit is provided by C35 C40 and C41 as well as the three switching networks that control the capacitors C26 C30 and C34 The inductance consists of a stripline inductor on the PC board Feedback to cause oscillation is from the drain to the source consisting of 40 and C41 The normal frequency range of the oscillator is 60 to 80 MHz If the Multichannel option is being utilized in the system the modulation signal enters the RF module at J11 25 from the programmed compensation circuit located on the Channel Control board The modulation gain varies at different frequency settings therefore the gain must be compensated for If the RF module is being used as a stand alone the modulation signal enters the RF module at J1 The signal is then applied to CR12 which is a variable capacitance diode CR12 is coupled to the resonant circuit by C39 R37 VARICAP BIAS ADJUST adjusts the bias on CR12 and is set for minimum modulation distortion usually approximately 5 V R33 MODULATION ADJUST adjusts the amount of modulation on the bias voltage
169. l the system PCL6000 602 13375 01 System Characteristics 1 3 System Specifications 1 3 1 PCL6020 PCL6030 PCL6060 Composite System Frequency Range Channel Spacing Frequency Response Distortion THD and IMD PCL6020 PCL6030 6060 Stereo Separation PCL6020 PCL6030 6060 Nonlinear Crosstalk PCL6020 PCL6030 6060 Signal to Noise Ratio PCL6020 PCL6030 6060 Emission PCL6000 602 13375 01 148 174 MHz 215 240 MHz 300 330 MHz 440 470 MHz 890 960 MHz 1 5 1 7 GHz 100 500 kHz 500 kHz standard 0 2 dB or better 30 Hz 53 kHz 0 3 dB or better 30 kHz 75 kHz 0 2 or less 30 2 7 5 2 typically better than 0 15 at 1 kHz Convolved stereo demodulation products greater than 50 dB below the 10096 modulation reference level 400 Hz from 7 5 kHz 15 kHz 0 196 or less 30 2 7 5 kHz typically better than 0 196 at 1 kHz Convolved stereo demodulation products greater than 50 dB below the 100 modulation reference level 400 Hz from 7 5 kHz 15 kHz 50 dB or better 50 2 15 kHz typically 55 dB or better 51 dB or better 50 Hz 15 kHz typically 55 dB or better 50 dB or better Sub to Main Channel 51 dB or better Main to Sub Channel 72 dB or better typically 75 dB Demodulated de emphasized left or right Referenced to 10096 modulation 75 dB or better typically 77 dB Demodulated de emphasized left or right Referenced to 100 modulation
170. ly drawing and has a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port PCL6000 602 13375 01 Moseley PCL6000 5 41 1ST LOCAL OSCILLATOR 950 MHZ The adjustments for the receiver 1st LO are identical to those specified for the transmitter 1st LO see Section 5 4 2 1ST LOCAL OSCILLATOR 330 450 MHZ The adjustments for the receiver 1st LO are identical to those specified for the transmitter 1st LO see Section 5 4 2 LO2 SYNTHESIZER REF FREQ ADJ 501 Frequency Trim Adjustment Used to tune the reference oscillator LOSS OF LOCK CR1 This LED gives a red indication when the AFC loses lock AFC LVL FL1 AFC level test point Monitors the DC level of the AFC loop It is normally set to 7 VDC F1 AFC ADJ C34 F1 AFC Level Adjustment Adjusted for a nominal 5 9 VDC depending on the channel assignment Check the test data sheet F1 S42 Switches on the F1 AFC adjustment capacitor active F1 LED CR6 Indicates the F1 AFC adjustment capacitor is active F2 AFC ADJ C30 F2 AFC
171. ly to survive shipping Make sure the carton is packed fully and evenly without voids to prevent shifting Seal it with appropriate shipping tape or nylon reinforced tape Mark the outside of the carton Electronic Equipment Fragile in large red letters Note the RA number clearly on the carton or on the shipping label and make sure the name of your company is listed on the shipping label Insure your shipment appropriately All equipment must be shipped prepaid The survival of your equipment depends on the care you take in shipping it Address shipments to MOSELEY ASSOCIATES INC Attn Technical Services Department 111 Castilian Drive Santa Barbara CA 93117 Moseley Associates Inc will return the equipment prepaid under Warranty and Service Agreement conditions and either freight collect or billed for equipment not covered by Warranty or a Service Agreement 6 4 Field Repair Some Moseley Associates equipment will have stickers covering certain potentiometers varicaps screws and so forth Please contact Moseley Associates technical service department before breaking these stickers Breaking a tamperproof sticker may void your warranty When working with Moseley s electronic circuits work on a grounded antistatic surface wear a ground strap and use industry standard ESD control Try to isolate a problem to a module or to a specific section of a module Then compare actual wave shapes and voltage levels in your circuit with a
172. m the purchaser s installation and subsistence shall be paid by purchaser to Moseley Associates Inc 2 In case of any equipment thought to be defective the purchaser shall promptly notify Moseley Associates Inc in writing giving full particulars as to the defects Upon receipt of such notice Moseley Associates Inc will give instructions respecting the shipment of the equipment or such other manner as it elects to service this Warranty as above provided 3 This Warranty extends only to the original purchaser is not assignable or transferable does not extend to any shipment which has been subjected to abuse misuse physical damage alteration operation under improper conditions or improper installation use or maintenance and does not extend to equipment or parts not manufactured by Moseley Associates Inc and such equipment and parts are subject to only adjustments as are available from the manufacturer thereof 4 NO OTHER WARRANTIES EXPRESS OR IMPLIED SHALL BE APPLICABLE TO ANY EQUIPMENT SOLD BY MOSELEY ASSOCIATES AND NO REPRESENTATIVE OR OTHER PERSON IS AUTHORIZED BY MOSELEY ASSOCIATES INC TO ASSUME FOR IT ANY LIABILITY OR OBLIGATION WITH RESPECT TO THE CONDITION OR PERFORMANCE OF ANY EQUIPMENT SOLD BY IT EXCEPT AS PROVIDED IN THIS WARRANTY THIS WARRANTY PROVIDES FOR THE SOLE RIGHT AND REMEDY OF THE PURCHASER AND MOSELEY ASSOCIATES INC SHALL IN NO EVENT HAVE ANY LIABILITY FOR CONSEQUENTIAL DAMAGES OR FOR L
173. m the switching supplies enters the board at P1 See notes 2 and 3 in the schematic for further details 4 2 1 3 Radiate Control Logic The Radiate Control Logic circuitry consists of Q3 S1 and U1 This circuit will allow the transmitter to radiate when the following conditions are simultaneously met 1 The OPERATE STANDBY switch S1 is in the OPERATE position or the OPERATE STANDBY switch S1 is in the STANDBY position and pin 4 D of the transmitter I O panel remote connector RMT RAD is at ground potential see Figure 2 13 The LOCK signal from the RF module P4 2 is HIGH 5 VDC Pin 9 K of the back panel remote connector RMT OVRD is floating not connected to ground This will appear as 5 VDC on this pin see Figure 2 13 When all of the above conditions occur the base of will go from 3 V to 0 V enabling the 12 5 VDC power supply The and RFA will operate thus allowing the transmitter to radiate The OPERATE STANDBY switch 51 on the front panel is a double pole double throw switch used to activate logic circuits within the transmitter and is connected through the harness to pin 3 C of the back panel remote connector RMT MODE for remote indication of the OPERATE STANDBY mode For 12 24 48 VDC supply configuration provides a logic level output to switch the internal DC supply on and off according to the RADIATE status The schematic references this option 4 2 1 4 PA Cur
174. mbly drawing and has a passband of approximately 8 MHz This can be tuned by observing the RF LVL on the meter and peaking the three adjustment capacitors of the filter Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port Preselector Filter 1 7 GHz The filter is located at the rear of the receiver see system assembly drawing and has a passband of approximately 20 MHz Under normal circumstances no alignment is required To check alignment a sweep oscillator whose frequency is centered in the middle of the RF band used is injected into RF IN and the signal is monitored at IF OUT The five screw adjustments should be set for a flat passband greater than 5 MHz wide Take care not to adjust the LO filter which is located on the same bracket The preselector filter is the one that is connected directly to the ANTENNA port Adjust 70 MHz bandpass filter capacitors C41 C44 and C47 IF Demod module PCL6020 or C40 C43 C46 and C49 Double Converter LO3 module PCL6030 6060 for a peak reading on the RF LVL meter position These adjustments are found through access holes at the top of the module 5 3 9 4 System Check 1 Using MOD ADJ R33 in the transmitter RF module set deviation to 50 kHz 40 kHz mono 2 Using a 15 kHz tone verify distortion is within specification If adjustment is needed use 10 7 MHz IF adjustments PC
175. n minima Varicap bias should be adjusted to that setting which produces the lowest distortion Readjust the AFC so that the voltmeter reads 7 volts Repeat this procedure until the varicap bias is set for minimum distortion and the AFC level adjustment is between 6 9 and 7 1 VDC Set the frequency on the distortion measurement test set for 15 kHz and verify that the distortion meets specifications Modulation Level The deviation select jumper E7 on the receiver Audio Power Supply should be in the wideband composite position Using the counter set the output frequency of the distortion measurement test set oscillator to 20 78 kHz 16 62 kHz mono Verify that the oscillator output voltage is 1 25 VRMS 1 00 VRMS mono Adjust FMO deviation for 50 kHz 40 kHz mono as follows using the Bessel null function waveforms in Figure 5 5 a Connect the output of the adjustable attenuator to the RF spectrum analyzer and disconnect the audio input from the FMO Establish the reference level shown in Figure 5 5 on the RF spectrum analyzer PCL6000 602 13375 01 6000 5 33 Reconnect the audio from the distortion measurement test set to the and adjust the MODULATION ADJ R33 on the from minimum to the first Bessel null function Figure 5 5b Reconnect the adjustable attenuator to the IF Demod Verify the AFC level at FL1 is between 6 9 and 7 1 VDC Verify the distortion at 15 kHz meets spec
176. n the factory to duplicate CHANNEL 1 To set a new channel frequency see section 5 3 Alignment Procedures or contact the Moseley Technical Services Department 3 2 3 2 Remote Control Operation The channel selection function of the Multichannel transmitter can be accessed via the back panel CHNL CONTROL connector The schematic diagram of the 9 pin D connector and the required interface logic is shown in Figure 2 14 and Table 2 3 Additionally the 5 position INTERNAL REMOTE dip switch SW6 on the Channel Control board must have all switches in the OPEN or 1 position for proper remote control operation The front panel CHANNEL display will indicate the current remote control state of the transmitter with a red light in the upper left corner RMT The displayed channel number represents the actual channel the transmitter is operating in The SELECT knob will have no effect on the transmitter in this mode But the position of the SELECT knob retains its memory Changing the knob position will change the channel that the transmitter will return to if the REMOTE ENABLE is disabled 3 2 3 3 Front Panel Control LOCKOUT Operation To prevent unauthorized or accidental changing of the channel via the SELECT knob the front panel can be locked out by programming the 5 position INTERNAL REMOTE dip switch SW6 on the Channel Control board This switch emulates the remote control function internally and the unit will appear to be in remote cont
177. nce at 960 MHz has indicated that for reliable year round operation with a predominantly overland path and 0 6 Fresnel zone clearance a 20 dB fade margin should be used At least a 25 dB fade margin should be allowed if the path is over water or flat terrain with little vegetation PCL6000 602 13375 01 6000 2 7 2 6 Transmission Cables The transmission cable between antenna and transmitter or receiver should be coaxial cable whose loss characteristics are known Typical quality low loss foam dielectric lines such as Andrew LDF4 50 a 0 5 inch diameter cable has a 2 4 dB loss per 100 feet at 950 MHz This cable will generally be adequate where the total cable run at both transmitter and receiver is less than 300 feet and there is a good transmission path of less than 10 miles When the total transmission cable length exceeds 300 feet an obstructed or grazing path occurs or the path length exceeds 10 miles a lower loss cable such as Andrew LDF5 50 a 7 8 inch diameter cable with a loss of 1 4 dB per 100 feet is recommended To reduce system losses it is important to select type N connectors that are designed for the type of transmission cable used in the system The connectors must be installed in accordance with the manufacturer s recommendations It may take only one improperly installed connector to reduce the received signal strength sufficiently to provide only marginal system performance Reasonable care should b
178. nsferring operation to another receiver Metering and Status The Metering and Status circuitry located in the Audio Power Supply board conditions the metering samples and drives the status LED on the front panel and the front panel meter Remote status functions are also provided Power Supply AC The Power Supply section of the Audio Power Supply board converts any of four AC input voltages 100 120 220 240 VAO into the four regulated DC voltages required for the operation of the receiver The outputs are 15 15 and 5 VDC for the most of the system electronics regulated 12 VDC supply powers the crystal ovens in the 1st and 2nd LO Power Supply DC Option Receivers configured for DC operation only 12 24 and 48 VDC have internal switching power supplies to provide the system voltages These supplies can be isolated from chassis ground to allow negative DC source operation Multichannel Operation Option The Multichannel Control board is pre programmed to select the receiver frequency selection by controlling the LO2 synthesizer in the RF module This Control board has facilities for over ride PCL6000 602 13375 01 6000 1 11 of the pre programmed channel frequencies Channel 0 operation Remote control of the channel selection is also provided on this board through access to the back panel Channel selection and display is accessed by the user through the front panel The Channel Contr
179. ny shown on the block and level diagrams or schematics These will sometimes allow the problem to be traced to a component PCL6000 602 13375 01 Moseley PCL6000 6 3 Spare Parts Kits Spare parts kits are available for all Moseley Associates products We encourage the purchase of the appropriate kits to allow self sufficiency with regard to parts Information about spares kits for your product may be obtained from our sales department or technical service department Module Exchange When it is impossible or impractical to trace a problem to the component level replacing an entire module or subassembly may be a more expedient way to correct the problem Replacement modules are normally available at Moseley Associates for immediate shipment Arrange delivery of a module with our technical services representative If the shipment is to be held at your local airport with a telephone number to call please provide an alternate number as well This can prevent unnecessary delays Field Repair Techniques If an integrated circuit is suspect carefully remove the original and install the new one observing polarity Installing an IC backward may damage not only the component itself but the surrounding circuitry as well IC s occasionally exhibit temperature sensitive characteristics If a device operates intermittently or appears to drift rapidly cooling the component with a cryogenic spray may aid in identifying the problem If a soldered com
180. o 19 dBm 80 mW or permanent damage to the module may result The PA current sample is derived across R2 plus any additional line losses to provide 0 18 volt amp sensitivity at the RFA input terminals C701 and C702 This sample is fed to the Audio Power Supply board and a test point is provided for monitoring The seven section low pass filter following AR1 is realized in a semi lumped configuration utilizing microstripline inductors open circuited stubs and lumped capacitors C8 and C9 The filter attenuates the harmonics of the final stage to better than 60 dBc per FCC requirements The dual directional coupler is fabricated using stripline technology to provide high directivity therefore assuring accurate forward and reflected power sampling Detectors and CR2 provide DC meter samples for reflected and forward power respectively These sample voltages are fed to the Audio Power Supply board The forward and reflected power sample is conditioned and fed to the meter for monitoring Forward power voltage level at C721 is approximately 2 5 VDC for the nominal 10 watts output Reflected power voltage level at C722 is approximately 2 5 VDC for the 100 reflected power The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 2 RF Amplifier 450 MHz The RF Amplifier module is a three stage power amplifier designed to produce 10 watts nominal output power over the 440 470 MHz band when
181. ograms the 250 kHz step size of the synthesizer Programs the 25 kHz step size of the synthesizer INTERMEDIATE POWER AMPLIFIER 950 MHZ The only adjustments to the IPA are the filters FL11 FL12 These can be adjusted by injecting a sweep signal at J3 with P2 in the test out position The filter response may be tuned by observing the output on a spectrum analyzer If a quick alignment is needed put the meter switch in IPA position and peak the reading by adjusting the filter screws P2 should be in the operate position for this INTERMEDIATE POWER AMPLIFIER 220 450 MHZ The only adjustments to the IPA are the external filters FL4 FL2 These can be adjusted by tuning the filter screws for a peak reading of the FWD PWR meter while in the OPERATE mode 1ST LOCAL OSCILLATOR 950 MHZ XTAL OSC TUNE C84 PCL6000 602 13375 01 Crystal oscillator tune Sets peak oscillator output and operating point Moseley PCL6000 5 37 DRIVER TUNE C88 Sets input level to the doubler for maximum odd harmonic rejection SRD INPUT MATCH 1 C95 Diode drive adjustment Used to tune for maximum power output SRD INPUT 2 C98 Diode drive adjustment Used to tune for maximum power output SRD OUTPUT MATCH1 C65 Diode match adjustment Used to tune for maximum power output SRD OUTPUT MATCH2 C101 Diode match adjustment Used to tune for maximum power output LO FILTER FL10 Factory set for 20 MHz bandwidth DO NOT ADJUST LO LVL FL
182. ol board connects to the RF module via a 25 pin D ribbon cable The RF module must be compatible for multichannel operation Please contact the factory for field retrofit of the system PCL6000 602 13375 01 System Characteristics 1 12 9345395 SSTINN SILON TZNNYHOU YM 104 LD 6SLOL LO9 200 232433 G3IV2OKNI NOLO 20 5 5 INN DV lt 46 VO uL 9 09 d JHL SUNT 10 82100 400 4 Di 0550 SI SHI AWANS JLVIDVA ATZ 3YWIUN 21 831743433 W3LSAS ZH WV 1254 u3Lu3ANOQ 20 20 AG 138304 GI VIN NOLO 90 UO W ALINHA ILVIOVE AB 336 amp NO 058001 SI 1214 176000 254 20 303 NV ZHNOS OCL MOL ZHNUGO ni VINNGLNY 008 dN AZU ANIYSNS Vd 240271 AZZ ATL 24 1 1 ZHOZ V ZHWOSB SX uar on oce yox HIL V HNO36 ozzyex ZHNDTZ IX Figure 1 1 PCL6010 Transmitter Block and Level 9241319 Sheet 1 2 PCL6000 602 13375 01 eic ivze ERES EE oa e 0109 134 AGO Noe de 4125 VI 913795 80 1 13 50 V Gai OL JOMLNDO N340 TVLX
183. on the stereo source selector and if required adjust the zero dB reference on the distortion analyzer Select the LEFT ONLY position on the stereo source selector Using the input range controls on the distortion analyzer measure the right channel separation Note The COMP LF TILT adjustment affects both channels Paragraphs 5 and 6 may be repeated several times to optimize this setting 7 Stereo signal to noise ratio This test should be run using the normal 75 us de emphasis characteristics of the stereo demodulator Connect the audio output of the distortion analyzer to the stereo source selector Set the stereo source selector to the LEFT RIGHT position Using the 50 Hz high pass filter connect the left channel of the stereo demodulator to the distortion analyzer input Using the METER FUNCTION switch on the STL transmitter select the PGM LVL position Adjust the output of the audio oscillator on the distortion analyzer for a frequency of 400 Hz Adjust the output level on the distortion analyzer so that the transmitter meter reads zero dB on the top scale Using the METER FUNCTION switch on the receiver select the PGM LVL position and verify that the meter reads within 1 dB of the transmitter meter Adjust the input range and relative ADJ controls on the distortion analyzer for a zero dB reference on its meter Position the stereo source selector to the OFF position Measure the stereo demodulated signal to no
184. ormation The output power is approximately 10 dBm 1st Local Oscillator 1 7 GHz The TX RF module output frequency 850 MHz nominal is multiplied X2 in the Doubler Assembly to achieve the desired carrier frequency 1 7 GHz nominal Therefore the operating frequency of the 1st LO is nearly identical to the 950 MHz band configuration The 1st LO LO1 section of the RF module consists of an oven controlled crystal oscillator a doubler and a step recovery diode SRD multiplier The oscillator operates at 92 MHz nominal The resultant multiplication factor of the LO is X10 The output 920 MHz is filtered and attenuated before being applied to the upconverter mixer A level detector provides front panel metering information The output power is approximately 10 dBm Up Converter To preserve the low noise and low distortion characteristics of the FMO the RF signal is up converted to the required carrier frequency through the use of a double balanced mixer and the 1st Local Oscillator LO1 The appropriate mix product is selected with a bandpass filter The Intermediate Power Amplifier IPA amplifies the signal to a level high enough to drive the RF power amplifier RFA or the Doubler Assembly in the 1 7 GHz system The Upconverter IPA is located in the RF module RF Amplifier 950 MHz The RF Amplifier module internally consists of a three stage hybrid amplifier which amplifies the input signal 40 mW typical to the nominal
185. osser m m utu esu 2206050 rosam owoce OS cox c 886000 256 092 A A A S A oJ 8 8 r 28 5 95 2 600 10228 01 Receiver RF Module Schematic p 3 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 126 SS re m sex fv wwe w Eus un mom move z ser oser 99 09 IN 88948 zu ozz IN HH S amp VdA8 Y N s ox tives zum ass 0609 0209 Fus mm 9 dAV 31 351 Wy 3udd 2 55 415 XVOD ASI 600 10228 01 Rev K Receiver RF Module Schematic p 4 of 4 PCL6000 602 13375 01 Moseley PCL6000 7 127 56 M u Bo 88 A b i gt 8 Og 930 03546 01 Rev G Receiver RF Module 6030 Assembly PCL6000 602 13375 01 Schematic and Assembly
186. pectively These sample voltages are fed to the Audio Power Supply board The forward and reflected power sample is conditioned and fed to the meter for monitoring Forward power voltage level at C721 is approximately 2 5 VDC for the nominal 10 watts output Reflected power voltage level at C722 is approximately 2 5 VDC for the 100 reflected power The RFA supply bridge diode CR101 and regulator Q101 are mounted to the heat sink of the RFA 4 2 3 3 RF Amplifier 330 MHz The RFA module is a three stage discrete bipolar amplifier utilizing elements for impedance matching and tuning The amplifier provides 20 dB of gain to an output level of 10 watts The input applied at J1 is nominally 20 dBm 100 mW The first stage Q1 is operated class and its input matched by C5 C8 and L1 This stage provides 9 dB of gain The output of the first stage is tuned and matched to the input of the second stage by L2 C8 and C11 The second stage is operated class C and provides 7 dB of gain The output of the second stage is tuned and matched to the input of the final stage by L4 C13 and C16 The final stage is operated class C and provides 6 dB of gain L5 L6 C18 and C17 match the final output impedance into the 5 element low pass filter C19 L7 C20 L8 C21 The filter attenuates harmonics of the final stage to better than 60 dBc per FCC requirements The output impedance of the filter is 50 ohms The dual directional coupler
187. peration 4 3 6 1 FM Demodulator The 3 MHz RF signal at J3 is fed to a low noise amplifier U4 and its associated circuitry where it receives approximately 30 dB of voltage amplification This signal passes through a 3 MHz phase linear bandpass filter L8 L10 with C83 and C84 The output of this filter drives a high gain 60 dB non saturating symmetrical limiting amplifier U6 The amplitude limited signal is then fed to a precision charge count FM detector to extract the baseband information The FM detector operates as follows Q15 Q16 and Q18 form a differential amplifier with Q13 and Q14 serving as constant current collector loads This amplifier has a gain in excess of 30 dB Q10 and Q17 in conjunction with diodes CR15 through CR17 form low noise voltage clamps to ensure non saturating action of the differential amplifier transistors The current outputs of the differential amplifier alternately charge C62 and C63 through diodes CR12 and CR13 These capacitors are then alternately discharged through Q11 and Q12 the total current being proportional to the signal frequency Q11 and Q12 serve as current to voltage converters whose outputs are combined and integrated 500 kHz low pass filter 14 and L5 and associated circuitry The output from this filter contains the baseband information A two stage low noise amplifier U5 and U1 then amplifies the baseband signal to a useful system level Jumper E1 sets the baseband gain to compen
188. ponent must be replaced do the following Use 40W maximum soldering iron with 1 8 inch maximum tip Do not use soldering gun Excessive heat can damage components and the printed circuit Surface mount devices are especially heat sensitive and require a lower power soldering iron If you are not experienced with surface mount components we suggest that you do not learn on critical equipment Remove the solder from the component leads the printed circuit pads Solder wicking braid or a vacuum de solderer are useful for this Gently loosen the component leads and extract the component from the board Form the leads the replacement component to fit easily into the circuit board pattern Solder each lead of the component the bottom side of the board using a good brand of rosin core solder We recommend not using water soluble flux particularly in RF portions of the circuit The solder should flow through the hole and form a fillet on both sides Fillets should be smooth and shiny but do not overheat the component trying to obtain this result Trim the leads the replacement component close to the solder on the pad side of the printed circuit board with a pair of diagonal cutters Completely remove all residual flux with a cotton swab moistened with flux cleaner long term quality inspect each solder joint top side bottom under magnifier and rework solder joints to meet indus
189. pply Assembly Schematic and Assembly Drawings 7 109 6000 HOTT mene bee AZL A 30 5907 038 G 1 e 2 21 MO0T AGH Tey fos ASt ta ror 0 un 21 d A lt COA AL ph T gt PA 2 BTS WNNON AL BAD 23 10999 0 080 1 99 8 20900 066 96 675 EE EL SEE 12 0 xev ors INHI ua 93323535 35 MAHIO SSTINN SILON OS SJNTVA LIVA 4 1 SNHO NI NOLISIS3H 1 ale OL v v6 1 78 138 4 QL S 16 135 NOUVe3dO TINNVHILLTNN 03 Z 32v JU3LNI B7d V2d EJd Tid OL 83293431 mA DON 600 10227 01 REV H Transmitter RF Module Schematic 1 of 4 PCL6000 602 13375 01 Schematic and Assembly Drawings 7 110 v N adze 15 sco szo 2 gt 83119 SSvd MO 852 089 00 Su EGA gpu ZTu 5 0 0 n Lr ow 241 38 090 200 SVE RI 6 eu BPLI 08 Bl lt 001 awa vel ozu eu 600 10227 01 Transmitter RF Module
190. r 6 2 SCHEMATICS AND ASSEMBLY DRAWINGS 7 1 7 1 PCL 6000 220 STD 602 10300 71 Rev A 7 1 7 2 PCL 6000 330 450 STD 602 10301 71 Rev 7 32 7 3 PCL 6000 950 STD 602 10299 71 Rev A 7 66 7 4 PCL 6000 1 7 GHz Standard System 7 103 PCL6000 602 13375 01 Moseley PCL6000 List of Figures Figure 1 1a b PCL6010 Transmitter Block and 1 12 13 Figure 1 2a b PCL6020 Receiver Block and 1 14 15 Figure 1 3a b PCL6030 Receiver Block and 1 16 17 Figure 1 4a b PCL6060 Receiver Block 1 18 19 Figure 2 1 Line Filter Fuse Holder Programming Detail shows 100 VAC operation selected Rho Sce TE EE EN E 2 2 Figure 2 2 Typical Bench Test Setup 2 4 Figure 2 3 Typical PCL6000 Site Installation sese 2 8 Figure 2 4 Transmitter and MUX Int
191. r low frequency roll off of mono filter factory set Sets unity gain of mono filter Selects the input program signal to be processed Composite PGM LVL meter function 0 dB 50 kHz deviation Monaural PGM LVL meter function 0 dB 40 kHz deviation Digtial modulation PGM LVL meter function REFL PWR meter function 0 dB 100 reflected power FWD PWR meter function 0 dB 100 output power 5 to 7 watts RF Power Amp current meter function Scale is AMPS X 10 Intermediate power amplifier relative output level meter function Relative AFC level from FMO synthesizer meter function Relative output level of 1st LO meter function MUX LVL meter function 5 on the lower scale equals 5 kHz deviation of the main carrier by the subcarrier Power supply metering adjustments Adjust the meter ballistics The meter is normally adjusted for a 0 25 dB overshoot by switching between the REFL POWER meter function and the PGM LEVEL meter function with a 0 dB input program input 3 5 Vp p or 1 25 Vrms Used to electrically zero the meter Used to adjust the 12 5 VDC 22 VDC for 1 7 GHz power supply output voltage when the transmitter is in the OPERATE position Sets the point at which the standby transmitter will switch in conjunction with the Moseley TPT 2 transfer panel PCL6000 602 13375 01 5 36 Alignment 5 4 Transmitter RF Module FMO SYNTHESIZER REF FREQ ADJ OSC1 LOSS OF LOCK CR1 AFC LVL FL1 VARIC
192. r s performance can be verified by connecting output to the input of the audio spectrum analyzer and performing the tests specified in step 5 above 2 If the STL link is identified as the source of excessive stereo crosstalk the following steps should be taken a Verify that the cover is on the RF amplifier and install the covers on the transmitter and receiver using at least two screws b Ensure that the transmitter and receiver are more than 2 feet apart C Verify that distortion meets specification using the procedure shown in paragraph 5 3 6 PCL6000 602 13375 01 6000 5 23 10 5 kHz div A 15 kHz L R ref level 12242 2nd harmonic distortion level at 30 kHz Nonlinear crosstalk main to sub the difference in dB between level and level B 60 dB in this example MD1260A BMP Figure 5 12a Nonlinear Crosstalk Main to Sub VERT 10 HOR 5 kHz div C and lower and upper L R sideband level at 30 5 kHz and 45 5 kHz D intermodulation product at 15 kHz E linear vector crosstalk at 7 5 kHz this signal is a product of the stereo generator ST TA TG ATT 1 1261 Nonlinear crosstalk sub to the difference in dB between level C or Cy and level D 6 dB 60 dB in this example Figure 5 12b Nonlinear Crosstalk
193. r the complete receiver systems and for their modules are located in Section 7 Preselector Preamplifier 950 MHz PCL6020 6030 The Preselector Preamplifier is located in the RF module The antenna input signal is first passed through the preselector filter which is a pcb mounted helical bandpass filter with very low insertion loss The output of the preselector filter is fed to the preamplifier providing low noise gain The postselector filter provides further filtering as well as image noise rejection Preselector Filter 950 MHz PCL6060 The antenna input signal is first passed through the Preselector Filter which is a five element interdigital bandpass filter with a 20 MHz bandwidth and maximum insertion loss of 1 5 db This filter has superior rejection due to its mechanical implementation Preamp 1st Mixer 950 MHz PCL6060 The output of the Preselector Filter is fed to the Preamp 1st Mixer module This module incorporates an adjustable PIN diode attenuator for user adjustable front end protection The low noise high intercept point preamplifier is followed by the image noise filter The 1st Mixer down converts the carrier to the first IF 70 MHz by mixing with the 1st LO and is buffered for transmission to the Double Converter LO3 module Preselector Filter 220 450 MHz The antenna input signal is first passed through the Preselector Filter which is a three element helical bandpass filter with an 8 MHz bandwidth and max
194. ration NEG GND for positive DC input ISO GND for negative or positive DC input and fuse rating See Section 4 3 for further technical information concerning the internal DC configuration PCL6000 602 13375 01 3 8 e CHNL m 5 2 SQUELCH XFER MUT MTR MONO COMPOSITE OUT MUX OUT ARM OUT IN IN OUT Se GND oe MD1136 Figure 3 10 PCL6000 Receiver Rear Panel DC Option 3 33 Multichannel Receiver Operation The Multichannel receiver is preprogrammed for up to 16 channels of operation The frequencies are predetermined by the customer and are factory set at time of manufacture The PCL6020 receiver front panel for the Multichannel option is depicted in Figure 3 11 The front panel display indicates the CHANNEL number that is currently active A label on the rear panel lists the particular channel assignment frequencies The front panel SELECT knob enables the user to change channels as necessary The transmitter and receiver are matched with respect to channel assignment lt 7 PGM LVL MUX LVL m SS NG nruv AFC LVL 5 e NY lt PCL 6020 Aural STL Receiver TRANSFER o Lot LVL CHANNEL SELECT Multichannel System 5 Zu asv 2 AFC LOCK SIGNAL Q MD1134 Figure 3 11 PCL6020 Receiver Front Panel Multichannel Option 3 3 3 1 User Programmable 0
195. rease reliability in synthesizer designs OSCI is a temperature compensated crystal oscillator TCXO that provides a stable low phase noise reference oscillator for the phase lock loop The internal phase detector compares the VCO and reference oscillator inputs and delivers a series of pulses to the integrating loop filter Loop filter U3 is an integrating low pass filter that removes most of the reference frequency component of the phase comparator output It also provides DC gain to decrease the very low frequency noise of the 2nd LO Further filtering of the AFC voltage is then delivered to CR10 and CR11 through R30 closing the AFC loop The frequency stability of the 2nd LO is maintained by CR10 and CR11 which is attached to the stripline inductor through C62 A voltage generated by the circuitry changes the capacitance CR10 and 11 which is also part of the tuning of PCL6000 602 13375 01 Moseley PCL6000 4 15 the VCO resonant circuit Depending upon which capacitors are switched into the resonant circuit F1 C34 F2 C30 or FIX C26 the AFC level adjustment is used to place the phase locked loop in the center of its operating control range This is indicated by a nominal 7 VDC AFC level For Multichannel operation different capacitors are switched in to maintain an AFC range between 5 9 VDC for different channel frequencies These switching networks are labeled F1 F2 and FIX A logic level of 5 VDC at the
196. rent Signal Conditioner The voltage drop appearing across the PA current sampling resistor in the RFA module is presented to the Audio Power Supply board on P3 9 and P3 10 Amplifier 015 and FET Q1 provide a current sample for the meter that is independent of the RFA supply voltage The current to voltage conversion is different for the various frequency bands 220 950 MHz 0 18 VDC per Ampere 1 7 GHz 0 16 VDC per Ampere The sample voltage is measured at the input terminals of the RFA module 4 2 1 5 Metering and Status The Metering Functions are selected by the front panel meter switch 52 and are calibrated by potentiometers R151 15 R153 15V R155 12 R157 5 R166 LO1 R165 LVL R164 IPA LVL R163 PA CURRENT R162 FWD PWR R161 REFL PWR R201 COMP MTRG R202 MONO MTRG R203 DIG MTRG The signals are processed by absolute value amplifier and peak detector 011 This output is followed by a buffer PCL6000 602 13375 01 Moseley PCL6000 4 3 and meter ballistics amplifier U12 R131 METER ZERO is used to electrically zero the meter R286 METER BALLISTICS is used to adjust the meter acceleration and ballistics response The forward power sample from the RFA enters the Audio Power Supply board on P3 1 and is amplified by U13b The output is fed to the meter circuit for front panel meter display This output also appears on 4 9 RMT FWD1 for remote metering and hot standby p
197. rol operation Switching out the INT RMT ENABLE S6 will return the transmitter to front panel control 3 3 Receiver Operational Controls 3 31 Receiver Front Panel The operation of the receiver front panel controls is very similar to the transmitter controls Figures 3 5 3 6 and 3 7 show the PCL6020 PCL6030 and PCL6060 receiver front panels standard The meter functions and scales are described in Table 3 2 below The top scale is calibrated in dB followed by four decade logarithmic scale below which is a 0 to 25 linear scale On the bottom is a center arc for relative indications The meter is an absolute value peak reading type with fast ballistics since the purpose of the meter is to observe the peak values of program material Three bi color status LEDs indicate the operational status of the receiver SIGNAL is green when there is sufficient RF signal to exceed a user established threshold of RF signal that correlates to the minimum SNR that is acceptable to the user When SIGNAL is red there is insufficient signal to meet the minimum SNR requirements and the receiver is placed in a non operating muted condition which is indicated when OPERATE is red When the receiver is operating properly OPERATE is green AFC LOCK indicates the condition of the synthesized second LO It is green when the PLL is locked PCL6000 602 13375 01 6000 3 5 PCL 6020 Aural STL Receiver
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199. s RF Wattmeter Bird 43 or equivalent measurement range 5 15 watts Fixed Attenuator Philco 662A 30 or 30 dB 1 GHz Sierra 661A 30 50 Ohms 20 Watts Adjustable Attenuator Kay Elemetrics 0 100 dB Model 4320 Audio Signal Generator Tektronix SG505 low distortion or equivalent Audio Distortion Analyzer Tektronix AA501 or equivalent PCL6000 602 13375 01 2 4 Installation MONO AUDIO BALANCED GENERATOR L SUBCARRIER GENERATOR 50 MONO DUMMY LOAD amp AUDIO BALANCED ATTENUATOR ANALYZER STEREO FO DEMODULATOR i bg 1 1 STL RECEIVER SUBCARRIER DEMODULATOR MD1024 Figure 2 2 Typical Bench Test Setup More extensive testing can be accomplished using a stereo generator and demodulator combination and or a sub carrier generator and demodulator combination CAUTION Always operate the transmitter terminated into a proper 50 ohm load Always attenuate the signal into the receiver to less than 3000 uV Approximately 75 dB attenuation between the transmitter and receiver Observe these precautions when performing any bench test Otherwise the transmitter final transistor may be destroyed or the receiver preamplifier transistors may be damaged PCL6000 602 13375 01 Moseley PCL6000 2 5 Bench Test Procedure With the wattmeter and dummy load connected to the transmitter apply AC power to
200. s shown in Figure 2 11 the antenna is routed to each receiver through a power divider such as the Moseley model PD 1000 The use of a power divider is recommended so that the impedance as seen by each receiver is approximately 50 ohms RECEIVER A REMOTE SOUELDH XER COMPOS TE BUT AM N N SPARES mo 1 z j MD1031A REGEIVER B Figure 2 11 Main Standby Receiver Interconnect PCL6000 Composite The composite and outputs are paralleled using Tee connector This is permissible since the outputs are switched internal to the receiver Only one of the receivers at a time will have any output The interlock control is achieved by first interconnecting the ground GND on the two receivers The IN of each receiver is wired to XFR OUT of the other receiver GND and XFR OUT are located on the barrier strip on the rear of the receivers PCL6000 602 13375 01 Moseley PCL6000 2 19 2 9 4 Receiver Interconnect PCL6000 606 600 Mono PCL6000 PCL606 and PCL600 receivers used in a main standby configuration can be interconnected to perform automatic switchover if a detectable failure occurs in the on line receivers As shown in Figure 2 12 the antenna is routed to each receiver through a power divider such as the Moseley model PD
201. sate for the differences in wideband and narrowband transmitter deviation Baseband Level Adjust R10 is set to deliver a 3 5 Vp p signal at J2 for an FM signal with 50 kHz 35 kHz in narrowband mode deviation This FM detector is inherently wideband linear and adjustment free 4 3 6 2 RF Signal Strength Detector The signal from 04 is also sent to a four stage successive limiting differential amplifier Q2 Q9 through a simple bandpass filter L3 and C42 Each stage of this amplifier drives an amplitude detector 7 10 which in conjunction with the summing amplifier U3 produces a DC metering signal at J1 9 that is proportional to the logarithm of the RF input level over three decades of amplitude This voltage is used to indicate RF signal strength over the range of 3 3000 uV on the front panel meter LOG GAIN control R67 is used to establish the linearity of the signal sent to the Metering and Status module 4 3 6 3 Mute Logic The RF signal strength voltage from the log amplifier is also sent to comparator U2 which compares this level to a preset reference voltage established by MUTE THRESHOLD ADJUST R22 Decreasing this reference voltage decreases the signal strength required to initiate the mute condition Whenever the logic circuitry is in the mute condition MUTE threshold indicator CR6 will glow red A 2 dB hysteresis is built into the mute logic to eliminate chattering near the mute threshold Also network CR3 CR4
202. set as follows Meter Function Input level Filters 400 Hz In 80 kHz In Distortion Range 0 396 Input Range 10 dB Frequency 1 0 kHz Oscillator Level 10 dBm from 600 ohm source 2 Position the OPERATE STANDBY switch on the transmitter to the OPERATE position The RADIATE status LED should be green Using the METER FUNCTION switch on the transmitter select the FWD PWR position and verify that the meter reads between 3 and 2 dB on the top scale Using the METER FUNCTION switch on the transmitter select the PGM LVL function and verify that the meter reads between 1 and 1 dB on the top scale 3 Using the METER FUNCTION switch on the receiver select the RF LVL function PCL6000 602 13375 01 5 16 Alignment Position the switches on the adjustable attenuator for a reading between 1 microvolts on the middle scale of the receiver meter Using the METER FUNCTION switch on the receiver select the PGM LVL function The meter should read between 1 and 1 dB on the top scale Set the frequency to 15 kHz and verify that the meter of the distortion measurement test set reads between 9 and 1 1 VRMS Adjust the METER FUNCTION switch on the distortion measurement test set to the DISTORTION position Using the distortion measurement test set adjust the following controls on the IF Demod PCL6020 or Double Converter LO3 PCL6030 PCL6060 for minimum distortion PCL6020 a 1ST 10 7 MHz IF ADJ b 2ND 10 7 MHz IF
203. site and 85 kHz to 200 kHz for MUX In the extended baseband version of the PCL6000 the composite band spans 30 Hz to 110 kHz and the MUX passband extends from 120 kHz to 200 kHz For mono the split is 30 Hz to 15 kHz for audio and 28 85 kHz for MUX This module also contains the FET mute switch which is controlled by the mute comparator output of the Mute and Transfer circuitry The signal is then passed through a high frequency amplitude corrector which compensates for the baseband high frequency roll off caused by the 10 7 MHz IF bandpass filters to restore proper amplitude response to the baseband signal The signal is then fed to an audio amplifier and an 80 kHz composite or 15 kHz mono low pass filter The output of this filter passes through an active group delay equalizer which compensates for the group delay variations of the low pass filter This signal is then buffered by an output amplifier that provides 3 5 Vp p output for 100 modulation The output of the high frequency amplitude corrector is also passed to a MUX high pass filter 80 kHz composite 22 kHz mono and then goes to the MUX amplifier The output of this amplifier drives a MUX low pass filter 200 kHz composite 85 kHz mono which is then buffered to yield the MUX nominal output of 1 5 Vp p Mute and Transfer The Mute and Transfer circuitry located in the Audio Power Supply board mutes the audio signal during periods of insufficient RF signal strength or for tra
204. smitter Interconnect 2 9 2 Receiver Interconnect Other STL Receivers 2 9 3 Receiver Interconnect PCL6000 606 600 Composite ues 2 9 4 Receiver Interconnect PCL6000 606 600 Mono 2 10 Remote Control of the STL Transmitter 2 11 Multichannel Remote Interconnect Option 3 22 ari 3 1 31 Introd ctiol REED 3 1 3 2 Transmitter Operational Controls 2 22 3 2 1 Transmitter Front Panel 3 2 2 Transmitter Rear Panel 23 Multichannel Transmitter Operation 3 3 Receiver Operational 5 3 4 3 3 1 Rec iver Front Panels snadder 3 4 3 32 Receiver Rear Panel 3 3 3 Multichannel Receiver Operation essere 3 8 PCL6000 602 13375 01 Moseley PCL6000 4 MODULE 5 5 22 4 1 4 1 Introduction 4 1 4 2 Transmitter Theory of
205. st front end preamp The signal passes through a microstrip image noise filter to be applied to the 1st mixer U1 At this point the carrier signal is down converted to the 1st IF 60 80 MHz by mixing with the 1st LO 1020 MHz The IF output is terminated with a constant impedance diplexer network C8 L4 R4 C7 and tuned amplifier Q1 that has a high intercept point to prevent interference intermodulation The 1st IF amp also buffers the mixer output and provides gain to overcome conversion losses C4 and L3 tune the output of the amp to provide filtering 4 3 4 IF Demod PCL6020 The IF Demod module incorporates several functions including the 1st IF bandpass filter 2nd mixer 2nd IF filters and FM demodulator The input signal at the 1st IF 60 80 MHz enters at J2 and is amplified by to overcome the succeeding filter losses The nominal 70 MHz BPF is a 3 pole lumped element synchronously tuned capacitively coupled design whose primary purpose is to reduce undesired signals to levels that will not cause intermodulation in the 2nd mixer and IF amplifier The 10 dB bandwidth is 4 MHz Jumper E1 can be used to access this filter for testing The 2nd mixer performs down conversion of the carrier to 10 7 MHz The output is diplexed L1 L3 1 03 R4 to provide a constant impedance filter function and is amplified by Q1 Q2 and associated circuitry The FM demodulator is comprised mainly of U2 a high performance integrate
206. ter connect the meter input in parallel with the oscillator output and adjust the Relative Adjust control for a 0 dB reference on the distortion analyzer Reconnect the distortion analyzer input to the program output of the receiver PCL6020 On the receiver IF Demod module adjust BASEBAND LVL ADJUST R19 for a reading of 0 dB on the distortion measurement test set PCL6030 6060 On the receiver FM Demod module adjust BASEBAND LVL ADJUST R10 for a reading of 0 dB on the distortion measurement test set Using the receiver METER FUNCTION switch select the PGM LVL position and adjust PGM LVL R171 on the RX Audio Power Supply board for a reading of 0 dB on the top scale 7 Position the transmitter OPERATE STANDBY switch to the STANDBY position Connect the equipment as shown in Figure 5 6 and adjust the controls on the RF signal generator as follows Meter Function FM AM OFF Modulation Freq 110 kHz FM 10 kHz Output Level 40 Frequency Tune Tune to the center frequency specified on serial number label of receiver Peak Deviation Adjust FM control for a meter reading of 5 kHz While monitoring the oscilloscope adjust MUX Level Adjust R31 on the receiver Audio and Power Supply board for a reading of 1 5 Vp p Using the receiver METER FUNCTION switch select the MUX LVL position Adjust R12 on the RX Audio Power Supply board for a reading of 5 on the lower scale of the receiver meter PCL6000 602 13375 01 5 12
207. the composite information is aligned using a Bessel null function as a reference The MUX channel is aligned using an RF generator as a reference Procedure 1 Connect the equipment as shown in Figure 5 4 2 Adjust the audio oscillator of the distortion analyzer as follows a Position the meter function switch to the oscillator level position and adjust the oscillator level controls for an output voltage of 1 25 Vrms composite 1 00 Vnus mono b Using the counter to monitor the oscillator frequency position the frequency controls for 20 79 kHz composite 16 62 kHz mono 3 Position the transmitter OPERATE STANDBY switch to the OPERATE position PCL6000 602 13375 01 6000 5 9 Using the METER FUNCTION switch select the FWD PWR position verify that the meter reads between 3 dB and 2 dB on the top scale 4 Using the spectrum analyzer monitor the modulated RF output of the transmitter The controls of the spectrum analyzer should be in the following positions Frequency Band GHz 01 3 Time DIV Auto Trigger Free run FREQ SPAN DIV 50 kHz DIV with 3 kHz bandwidth Input ATTEN 30 REF Level 20 10 dB DIV Depress Tuning Transmitter center frequency DIREC TIONAL COUPLER ATTENUATOR ATTENUATOR PROGRAM OUT DISTORTION MEASURMENT SET t SPECTRUM AUDIO IN AUDIO OUT AURIS 600 OHM 1 1 4W CAUTION Place the transmitter RADIATE STANDBY switch ST
208. the module will illuminate F2 AFC ADJ C30 is enabled by switch S4 3 When enabled LED indicator CR5 visible through the side of the module will illuminate Both adjustments are typically enabled at the same time C26 fixed cap is enabled by switch 54 4 Enable this switch when operating at 950 MHz or higher Transmitter Connect the transmitter dummy load attenuated output to the frequency counter Allow 5 minutes for the crystal oven to stabilize Adjust 1st LO XTAL tuning capacitor C84 in the RF module to set the new output carrier frequency within 25 kHz of the switch setting Receiver Adjust 70 MHz bandpass filter capacitors C41 C44 and C47 IF Demod module PCL6020 or C40 C43 C46 and C49 Double Converter LO3 module PCL6030 6060 for a peak reading on the RF LVL meter position These adjustments are found through access holes at the top of the module Put the cover back on the RF modules they are a tight fit by design and reinstall the modules in the transmitter and receiver 5 3 9 2 Transmitter Procedure Note Check the schematics of the RF module pertaining to the frequency range of the system being modified If the frequency change falls outside of the original range listed the 1st LO crystal frequency must be changed Consult the factory if this is the case Multichannel Option If this is a multichannel system refer to Section 5 3 9 4 1 2 Connect 50 ohm high power dummy load to transmitt
209. the receiver The OPERATE LED will be red indicating that there is no RF Apply AC power to the transmitter and place the OPERATE STANDBY switch in the OPERATE position AFC LOCK and RADIATE will be red for several seconds and then turn green Observe that the wattmeter will indicate between 5 to 15 watts depending on the frequency band of operation and that the transmitter meter will provide readings of FWD PWR A brief period after RADIATE becomes green OPERATE on the receiver will change from red to green The RF LEVEL meter position on the receiver may be selected to determine the strength of the RF signal applied to the receiver Adjust the variable attenuator until an input signal strength of approximately 1000 uV is indicated It should be mentioned that in any bench testing where the transmitter and receiver are in close proximity there can be sufficient RF leakage from the cables to render computations of applied signal strength impractical based upon power and attenuation data Apply a 3 5 Vp p signal 1 237 VRMS from the audio signal generator at 400 Hz to the composite input of the transmitter LEVEL at the transmitter and receiver meters may be selected and should indicate 0 on the dB scale The output voltage from a composite output of the receiver can be fed to an audio analyzer The output voltage should be approximately 3 5 Vp p 1 237 VRMS The audio input signal may be removed and the broadband signal
210. tings To align the STL to the exact carrier frequency of the channel adjust the 1st LO XTAL tuning capacitor C84 PCL6000 602 13375 01 6000 5 3 2 Receiver Sensitivity Description 5 5 The sensitivity of the PCL6000 receiver is verified using a signal generator and either a de emphasis network or a de emphasized stereo demodulator RF SIGNAL GENERATOR DISTORTION MEASUREMENT SET REGEIVER AUDIO IN MONO HIGH PASS FILTER MONO RF SIGNAL GENERATOR RECEI VER COMPOSITE HIGH PASS G 75 uS DE EMPHASIS COMPOSITE MD1035 Figure 5 2 Sensitivity Test Setup PCL6000 602 13375 01 5 6 Alignment Procedure 1 Connect equipment as shown in Figure 5 2 Set the controls on the signal generator as follows Meter Level Volts AM Modulation Off FM Deviation Off Frequency Tuned to center freq indicated on rear of receiver Output Level 40 dBm adjust output level for a reading of 3 mV on the signal generator meter RF On 2 Using the METER FUNCTION switch on the PCL6000 Receiver select the RF LEVEL meter position Verify that the meter reads within the 3 K range of the middle scale 3 While monitoring the center scale of the receiver meter switch the OUTPUT LVL ADJ on the signal generator from 40 to 110 and verify that the signal strength reads within the meter range for each setting If it does not proceed to Section 5 4 10 FM Demod PCL6030 6060
211. tion Logic IC U5 decodes and detects channel address number 0 to toggle between EPROM control PROM ENABLE and on board manual programming control CHNL 0 ENABLE via switches S2 53 54 and 55 The EPROM outputs PROM PROGRAM are buffered by bus drivers 07 08 09 The switch outputs are buffered by bus drivers U10 011 012 The driver outputs parallel connected PROGRAM OUTPUT BUS and enable bank switching of the outputs When channel number 0 is selected the switches take control and the RF module may be programmed for a user specified frequency The programming bits are assigned as shown in Table 4 2 Table 4 2 Receiver Channel 0 Programming Assignment Comments N8 64 MHz 32 MHz 16 MHz 8 MHz 4 MHz 2 MHz 1 MHz 500 kHz 250 kHz 200 kHz 100 kHz 50 kHz 200 kHz FIX CAP ACTIVE RF Module Circuit F2 CAP ACTIVE RF Module Circuit F1 CAP ACTIVE RF Module Circuit PCL6000 602 13375 01 6000 4 21 The two digit display 2 is controlled by the EPROM outputs 00 04 DO controls the 10 s digit and 01 04 BCD DISPLAY decoded by 013 to provide the 1 s display For systems with less than 16 channels the display will blank and no programming is available DGT1 may be tested by shorting jumper E1 DGT1 TEST Analog switch IC U6 is used to compensate for modulation gain variations with frequency in the FMO Each pot adjustment R12 R13 R14 is independ
212. try standards Inspect the nearby components soldered by the Moseley Associates production line for an example of high reliability soldering PCL6000 602 13375 01 6 4 Customer Service This page is intentionally blank PCL6000 602 13375 01 Moseley PCL6000 7 1 7 Schematics and Assembly Drawings T 1 PCL 6000 220 STD 602 10300 71 Rev A gt 0 LEVEL DATE Transmitter Audio Power Supply Schematic 9187444 D 08 95 Transmitter Audio Power Supply Assembly 2083023 D 0895 RF Amplifier Schematic 46 08 95 LRF Amplifier Assembly 2083037 B 08 95 6020 Receiver Final Assembly 21828913 D 0895 6020 Receiver Final Assembly 21828923 D 08 95 Receiver Audio Power Supply Schematic 600 10710 01 B 08 95 Receiver RF Module 6030 Assembly IF Demod 6020 Assembly NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description PCL6000 602 13375 01 7 2 Schematic and Assembly Drawings TX AUDIO POWER SUPPLY 2 e Q 21 2890 6010 Transmitter Final Assembly 220 MHz PCL6000 602 13375 01 7 3 Moseley PCL6000 aut Ast lt zi DL a AZ a Wed 5 201 919 RIN AZ 25
213. uired on certain receiver combinations PCL6000 602 13375 01 2 14 Installation 2 9 1 Transmitter Interconnect When two transmitters are interconnected with a TPT 2 to form a main standby pair the composite and subcarrier generator output is routed to each transmitter in parallel The RF output of each transmitter is routed to the respective RF input on the TPT 2 The transmission cable to the antenna is connected to the antenna type N connector of the TPT 2 Figures 2 8 and 2 9 detail the interconnection of these signals The remote connector between the transmitters and the TPT 2 should be wired as shown in Table 2 3 Section 2 10 gives pin assignments for for the Transmitter Remote Connector NOTE For proper operation with a TPT 2 both transmitter RADIATE STANDBY switches should be in the STANDBY position Table 2 3 Remote Connector Wiring Guide PCL6010 PCL606 PCL505 PCL303 9 pin D 9 pin round A10 J1 B A10 J1 D A10 J1 C A10 J1 A 9 pin D and 9 pin round refer to two types of rear panel TX RMT connectors These are shown in Figure 2 13 The current standard is the 9 pin D connector Older PCL6010 s have the 9 pin round connector An appropriate mating connector is included with all units when shipped PCL6000 602 13375 01 6000 2 15 010294 le 2 TRANSMITTER TRANSMITTER 2 8 Main Standby Transmitter Interconnect
214. urposes Output P4 10 RMT FWD2 is available after the TPT THRESHOLD R138 adjustment to be used in conjunction with the MOSELEY Transmitter Transfer Panel TPT 2 to optimize the switchover point in a hot standby configuration The output of U13b is also fed to differential amplifier U14a where it is used to control the front panel radiate status indicator CR21 The reflected power sample from the RFA enters the board on P3 2 and is amplified by U13a to a usable level for metering U10b buffers the RF module AFC LVL signal P5 1 for remote metering RMT AFC that appears on pin 8 J of the back panel remote connector U14b is an LED driver for the AFC LOCK status indicator CR20 on the front panel the LED is red when the AFC is out of lock and green when locked 4 2 1 6 Audio Processor The audio processor supports either monaural or composite operation The balanced monaural input is converted to an unbalanced signal with the active balanced input amplifier 09 and 08 Jumper E6 enables the user to optimize the network for different nominal input impedance and levels see the table in the schematic The second half of U8 is an active 5 05 pre emphasis network enabled by jumper E5 F1 R77 and F2 R78 adjust the low and high frequency break points for optimum frequency response The monaural signal is routed through a seven pole active filter U7 U6 and U5 with 15 kHz cut off Adjustments FA R76 FB R75 and FC R49 are us
215. ver back on the RF module it is a tight fit by design and reinstall the module in the transmitter 5 3 9 3 Receiver Procedure OD 4b Note Check the schematics of the RF module pertaining to the frequency range of the system being modified If the frequency change falls outside of the original range listed the 1st LO crystal frequency must be changed Consult the factory if this is the case Multichannel Option If this is a multichannel system refer to Section 5 3 9 4 Attenuate the carrier to 1500 uV and feed to the receiver antenna input Remove RF module from RX Remove cover from component side of module Calculate the 2nd LO frequency as follows check the system data sheet for the exact frequency For a High Side LO LO CARRIER 2nd LO freq LO freq CARRIER freq 10 7 MHz For a Low Side LO LO CARRIER 2nd LO frequency CARRIER freq LO freq 10 7 MHz Program the synthesizer switches S4 1 S1 S2 S3 in the RF module for the correct frequency Please refer to the Synthesizer Frequency Calculation Example in Section 5 3 9 3 Put meter switch in AFC LVL position and adjust AFC for centerscale on front panel meter The test point feedthrough marked AFC LVL on the RF Module should read 7 VDC Reinstall RF Module PCL6000 602 13375 01 5 28 7 70 7 7 Alignment AFC Adjustment F1 AFC ADJ C34 is enabled by switch S4 2 When
216. y Demod 6020 Schematic 9187375 C IF Demod 6020 Assembly 2082941 C E 9 Double 6030 6060 9187451 Schematic Double Converter LO3 6030 6060 Assembly 20B3039 FM Demod 6030 6060 Schematic 91B7387 FM Demod 6030 6060 Assembly 20B2949 Adjacent Channel Filter 6060 Schematic 91B7502 Adjacent Channel Filter 6060 Assembly 20B3089 C C E E F J J J 1 G 1 NOTICE This section contains schematic and assembly drawings referred to in Sections 1 and 4 For information on individual drawings refer to Section 1 under System Description and or Section 4 under Module Description PCL6000 602 13375 01 Moseley PCL6000 7 67 RF MODULE 21 N a 21D2890 1 Rev 6010 Transmitter Final Assembly 950 MHz PCL6000 602 13375 01 Schematic and Assembly Drawings 7 68 24 FI DOT ed 9 4 AD 04 GI AN w LET ci 3 DEL ad 24 T GIVENI ONS cd zu Z4 BIT uu 1918 5 X YAd M3 13149395 SSIM SILON sSuvuv NI 9 2 DSL NI Samva 3812 ted 7 1

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