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L1158 and L1159 MRTI Service Manual

1. 12 Micor RCB 16 Flexar Repeater l 18 T1600 Series 20 MSR 2000 Series 21 MSF 5000 Series Base 21 COPYRIGHT 1985 BY IAI INSTRUMENT ASSOCIATES INC Last Revised AUG 1985 Revision B These instructions are categorized by operational mode as discussed in the detailed Installation Considerations section of the MRTI Instruction Manual and reflect the normal recommended method of connection to the base station IT is recommended that you read the Installation Considerations section to familiarize yourself with MRTI operation and to answer any questions regarding the short form procedures General installation procedures for installation in any radio equipment are covered in detail in the accompanying MRTI Instruction Manual Note If any of the following options are included in this parameter modification described in Section A of the instruction manual may be necessary to enable disable a particular function 1 E377AA TDN6895A Multifunction Utilities contained in ROM firmware marked UT Shipped with all optional functions turned off Refer to Section D of the instruction manual 2 E378AA TDN6896A E379 TDN6897A Auto dial
2. 5 5819 E aw on 4 43 111683 318VN3 HdW3 3G 3SNOdS38 LV14 SISVHdW3 30 ONV XH SMS LNANI 3A7 IH LNANI 1 1 01 JAT ONY XH SMS 130 1d MS 1 GHVMOL OND QHVMOL HIQ ONIHHYO EMS H913n6S XWIH HOLVOIONI HHYO 103130 48 2 ZMS H233noS UV HO13NOS Id 318vN3 13714 IMS qO Sa RAY 8 TIGOW 330 NO S3HDLIMS NOILONNS 9 JINGOW NMOHS LON 3HYV SHOLIOVdVO 9NI1dn0930 6 2 292 622 S SSR P Y y R s AS 01 NOILOSNNOD 31VOIONI 6 FIVIYFLN OIOGVY 1LYW s i I 9d oranvxu xnv tl L dNUH 5 431915 37 QJW NI HOLIOVdVO 91 4393001 4018 vea 228 02 0 00 6 ORV xB uuwoxny 92 Zid XU 1200 2 QN9 901 I 9 901 QN9UN1 1 uve as 823 329005 gt 291 130 495 21 We 009 E 9037 2 13a lee gnv x1 eeu T N3 1 14 RU Ho 1 4000 1691 134 14 er 130 028 SNIS 114 114 o1avy 41316 YOLINOW 2 O1 6 40 Arzi 8 eld L 2 LNdNI 5 Adans is zl UMd MOA is h l 929 xcv R H 90918845 Live 20 ASST AUF M ys 8 9 13 94i A OIG gt S Ag LL
3. SIRE nn O PAGE 44 080785 JAI PARTS LIST RIMX B RADIO INTERFACE MODULE IAI SYMBOL PART NUMBER DESCRIPTION INTERGRATED CIRCUITS IC1 2 3301 10008 00 VOLTAGE REGULATOR 3301 10058 00 OPERATIONAL AMPLIFIER IC4 5 6 3301 10006 00 OPERATIONAL AMPLIFIER IC7 3301 10037 00 HEX BUFFER IC8 3301 10028 00 HEX SCHMITT INVERTER IC9 3301 10039 00 HEX INVERTER DIODES 1 2 3 4 5 6 7 8 9 3302 20008 00 SILICON DIODE 10 11 12 13 14 15 16 17 18 27 28 29 30 31 32 33 37 39 D22 23 25 35 36 D19 20 3302 20008 00 3302 30008 00 3302 20008 00 3302 20006 00 3302 20002 00 3302 20004 00 3302 20009 00 3302 20010 00 3302 20015 00 SILICON DIODE SILICON DIODE SILICON DIODE SILICON DIODE 2A SILICON DIODE HIGH SPEED PROTECTION ZENER PROTECTION ZENER ZENER DIODE SILICON DIODE SCHOTKY RESISTORS R78 R120 R119 128 129 R81 R142 R94 124 130 133 138 150 R114 115 116 117 118 R103 67 R33 34 121 R69 R143 R40 59 63 91 R35 36 37 38 93 101 113 R112 R39 68 79 80 R84 R99 R43 45 46 47 49 51 53 55 57 58 64 65 66 102 126 140 141 R70 72 95 98 011184 3303 00010 10 3303 00027 10 3303 00100 10 3303 00220 10 3303 00270 10 3303 00470 10 3303 01000 10 3303 02200 10 3303 03900 10 3303 04700 10 3303 04700 10 3303 08200 10 3303 01001 10 3303 01201 10 3303 01501 10 3303 01801 10 3303 02201 10
4. EZ VIN OV gD 22 dd va VV 39 TI 69 96 19 99 SS 91 TS GI V N 1 24 86 68 46 48 62 84 66 88 44 79 99 19 99 99 19 91 Y N 59 99 SS bb 95 99 99 Y N M 60 TS 55 Sb Si SS 979 197 791 r 02 69 95 9 99 GS 9t t EG SE V N A 80 t9 9e I9 99 ET TT Y N H 61 9 9 9 99 9 bb Ek 95 Y N n 20 S IS GI SS TE ET II Y N 5 81 EG S Sb GE SG HE Y N ab 90 ve Ty 91 TE bb ET 21 59 9G 29 99 SS 92 26 24 Sc Y N 5 So 29 92 19 99 91 el 24 Y N 3 91 99 99 29 99 92 bb ch ZZ 94 Y N vO Sc IS IZ SS GI el ee Y N q SI 24 94 Sb GC SS 997 ch 44 2 Y N 0 ch be 19 Te 91 bb el ee Y N D HT 9 9 29 99 92 26 22 Z Y N d 20 2 IZ el ee ce a S SE 2 Sc SS ce Y N N 65 99 99 SS 599 ZZ II 29 N39 Gow ch be CE 997 EE ce W 00 be 79 Sb 14 SS 99 ZI cc 29 N39 9t St 6 8 4 9 7 4 0 NY ld 300 96 58 6 8 4 9 S 7 4 0 3909 JILAWVAVd 3000 11910 6 40 LISIA LST HILAWVHVJ 3QO2 LIDIG 40 11914 151 SNOL 524006 8 dNOU9 V LHVH S31VOIONI 11914 ANZ NOL V 404 324006 dnONO V LAVH SSLVDIGNI 11914 151 g LHVHJ SNV1d 3009 2 G ce9 67226 6266 6266 67206 G c98 573418 87444 G el2 G 299 9 39 a 87169 67296 S IS S 96 446 67228 S c 8 57484 23409 G eS9 g 39 S 9
5. B 2 Parts e B 3 E376AA TDN6894A Full Duplex Module Un OO Fr Installation C 1 Circuit Description C 1 Board Layout FDMX C 2 Schematic C 2 Parts Liste sors eoe ee o Ed C 3 D E377AA TDN6895A Multi function Utilities Description and Installation Procedures Q N O UT Automatic Station Identifier D 1 Security Executive Override Code Maintenance D 3 Multi digit Mobile access and or release D 3 Adjustable signal search Frequency amp duration LIMES ASS RRS sss ss D 5 Comprehensive Toll Restrictions D 5 Mobile Signalling Start D 6 Control of External Devices Using the Security Tu CRON D 6 Land line Priority with Selective Signalling D 7 Variable Length Touch codes to land line D 8 Emergency Call Direct 55 D 9 Inhibiting Pseudo Touch Code Regeneration During Mobile Dialogue 5 2 2 4 D 9 Special Mobile Signalling Control D 10 a High frequency ringing to mobiles b Loud ring to mobiles c Multiple ringing to mobiles Variable Mobile Inactivity Timer D 10 Attendant Connect Control D 11 Land line Caller Connect Co
6. previously vacated filter bracket terminal 10 On the REPEATER CONTROL BOARD connect a pink shrink or other spaghetti te insulate the wire Wire colors specified match cable wire colors and if followed may assist in lead in series With 1 meg resistor from 20 Pin 10 clipping the resistor 183485 to 1 2 inch and soldering the resistor to U2 Pin 9 Use heat 5 PIT Run a white wire from 0801 Pin 5 position to terminal 8 of the filter bracket 6 Install male pins on the MRTI J12 radio cable and insert them into a plug body Motorola p n 15 80315A40 as follows Color Function Plug Pin Number Gray Rec audio 1 Black PL detect 9 Pink transmit audio 4 White PTT 5 Brown TX PL strip 2 Yellow Green ground 6 Violet Tan Red ground 6 This plug mates with J801 7 Earth ground Run the supplied 12 black ground wire from the and logic return MRTI EARTH GROUND TERMINAL to the repeater chassis frame This wire must be as short as practical not coiled and connected securely to the chassis Connection complete RIMX Switch Settings Set the switches as follows 581 on private line systems off for carrier squelch SW2 off SW3 don t care SW4 on tone reed off tone reedless off DPL SW5 on SW6 off OTX Switch Swettings Set the OTX switches as follows SWl section 2 on SW1 section 3 on SW1 section 8 on All other switches are set as a
7. seconds in order to alert the mobile Then the transmitter is taken down to allow mobile response Landline audio is maintained at a uniform average level and digitally delayed on the OSVX module while the MRTI audio measurement and gain control circuits standardize the mobile to land line audio path The radio interface module RIMX incorporates receive audio input programming switches to establish ballpark input levels The MRTI audio circuits further adjust audio levels within a 15 db range The RIMX audio input is through a high impedance balanced differential circuit to eliminate hum and noise pickup and adverse loading effects on the audio source Receiver Audio may be obtained from either of the following sources 1 Discriminator or quadrature detector output This method provides audio that is unaffected by audio level controls Moreover the RIMX internal squelch circuit can provide carrier detect simplifying installation This method may be used on repeater control stations where the repeater is set for zero turn off delay 2 source of squelched speaker audio that is unaffected by front panel level controls Receiver audio VOX is normally used in this method to indicate mobile activity Mobile carrier detect used with method 1 above The preferred source is the RIMX intermal squelch circuit Under special circumstances the carrier detect logic input may be used in conjunction with the base station squelch circui
8. 2 AHOW3N SH3L3WVHYd 3 TLLVTOANON L 21 73084 LINEAR GND TEST POINT PROCESSOR BUS to memory ICs i 5v 23 gt 6V 24 gt gt B 2ND PROCESSOR 2 R W TO RAMs 26 gt IC 36 X5 P HANDSHAKE NVR 744 PIA2 PIA4 2 1 Message 2006 PTM 5 h 1 PIAS P3 22 40 40 7 TSTSWAO 25 4 11 22 za 15 PHS 18 20 20 18 as 24 CA 2 24 24 9 AIO z4 he as BUS EXTENSION 20 zd csi 39 38 9 6 19 39 3902 8 y io MEMORY EXPANSION 2 gt 203 u 16 2 2 Swi 8 AC GND DEG Sere 56 ao 55 552 56 Ao se e a2 36 5 51 Sar ue Es E AS UE LM NI 5 CIES rmm 25 JE 251 25 m Cae R ae sa CEN sa 34 is I 61771715 spa raat 35 M 56 IRGA 5 1 57 B 171816 7 4 00 178 s 37 37 rE Ez 37 dE A sir 9 9 118 9 9 8310 8 gs aon uols Pon Es M 24 ea 1 ss 22 19 18 5 32 E aii 217 00 82 02 RCI 31 155823 5 7 75 10711 Bo M 3592 Pori io Pe 0230
9. Table of Contents Operator Instructions a Signal Search Simplex 1 b Enhanced Vox Simplex Mode 2 Half Duplex MOde 9 999 oce er een srr rate 2 Full Duplex lt 4 4454 55 3 e General 4 f Notice Concerning FCC approval 6 g Abbreviated Mobile Commands Chart 7 7 8 Installation Considerations a Half 1 lt lt 45 4 9 b Full lt lt lt 10 c Signal Search Simplest aus 12 d Enhanced Vox 13 e MRTI Grounding and Lightning Protection 15 Set up and Interfacing a RIM Switch Settings 16 b RIMX Optional s 16 RIMX 17 d RIMX Input Output Specifications 17 e OTX Switch amp 1 5 18 Level Setting a Transmitter Audio Level Setting 20 b Carrier Detect lt 20 c Receiver 15 21 Installation RT TOS TST 22 System Sel i lestesssess
10. 1 Transmitter PL tone off i By attendant Touch Code telephone allows attendant to initiate ring signalling to mobile user s NOTICE This IAI telephone interconnect equipment contains one or more IAI Model RLM 3 telephone interface circuit cards which have been approved by the Federal Communications Commission for connection to the public switched telephone network under part 68 of the FCC rules and regulations The following information is supplied to ensure user compliance with the regulations 1 The Model RLM 3 telephone interface circuit card may not be used with party lines or coin lines 2 Customers connecting terminal equipment or protective circuitry to the telephone network shall before such connection is made give notice to the telephone company of the particular lines to which such connection is to be made and shall provide to the telephone company the FCC registration number and ringer equivalence of the registered terminal equipment or registered protective circuitry 3 The customer shall give notice to the telephone company upon final disconnection of such equipment or circuitry from the particular lines 4 When telephone line trouble is experienced the customer shall disconnect the registered equipment from the telephone line to determine if the registered equipment is malfunctioning and if the registered equipment is malfunctioning the use of such equipment shall be discontinued until the problem is co
11. 3 function 1 turns off function 1 turns off at every patch disconnect 4 function 2 turns function 2 turns off 5 function 3 turns 5 function 3 turns off 9 function 7 turns on function 7 turns off Functional Description The ORCTX 1 features seven 7 independent 1 2 amp resistive relay closures controllable by the n commands described above The first relay features a revertive function that opens the relay automatically on every patch disconnect The relays 2 to 7 remain in the last state commanded AC power interruption to the patch resets all relays to open Installation The ORCTX 1 module plugs into P9 on the OTX board P9 is repeated on the ORCTX 1 board to allow access to the P9 functions by other options The relay closure cable connecting to P121 on the ORCTX 1 board leaves the patch chassis through the large option slot the chassis rear panel The snub bushing provided on the cable slides into the slot affording strain relief The cable conductor functions are as follows P121 PIN OXN n EWN Cable color black white red green orange blue white black red black green black orange black blue black black white red white green white blue white L 2 FUNCTION relay closure relay closure relay closure relay closure relay closure relay closure relay closure relay closure no connection relay closure relay closure relay closure re
12. 30 T 7 n 26 912 ps M 2505 E nl s izj 9 pss 29 29 55 0 as 5 M 55 DELIE p pas 2 282 513 De 28 125 ps 02 Qa ve 2 M 2 872714 27 M 27 0 Pasa 7 414 27 72 CEEA ar M 7 5 02 68 pe 2605 10 PI I 26 M 26 s M pe M 6 9 23 25 25 23 07 Pese 38 11 32 1116 58 cae 20 2 be 22 24 22 zz 17 810 1017 armaq i 4 t cte ES 1814 LE 5 NOTE r PIA2 PB6 16 cia P8O PBI P82 4 P85 P86 P87 PAO PAI 2 4 PAS PAG PAT CBI 14 NE PIA2 PA5 7 PB7 10 a7 34 DECODER 22 PAG 5 R RIS R 871878 4113 2 2 26 8 5 84 8 82 183 lioo Rist Riso Ri29 Rt28 5127 MY 2 56 11 5 m KEY PIN a1 3 got Ri R RS ri Rg RZ OKS NOTE 1264 125 123 121 pisa PIAS 1 0 RAY pinic 22 620101 26 12 ACCES mm sw2 swi PWR FAIL IN RING DET 015 0i OFF HOOK SNNA 423 VOLTMETER C33 100 PF EV SW REG SYNC 5 7 R232 14 8 2K 5 AA U ac 270 wet on 37 2 A182 K 5V LNR na BUM X or Ly 15 19 8 10 I 5 1 8 INTERFACE D R208 sia 8 u 2 682 MODULE F I R207 475K 5 9 S BHO PIAL CBZ__ gt t PIA2 P
13. 44 v 5 0100 ARE 914 4 6 TRANSISTORS ARE 2 4401 7 C23 C24 MUST BE WITHIN 4 o LEO INI 08051985 IAI PARTS LIST OSVX ENHANCED VOX MODULE REFERENCE IAI SYMBOL PART NUMBER DESCRIPTION _ B E UV UU m t a t INTERGRATED CIRCUITS UU NEA MEC UNUS MD NR d M M a M T M M M aii _ IC1 3 3301 10007 00 SLOPE DELTA A TO D CONVERTER IC2 2A 3301 10027 00 DUAL BINARY COUNTER IC4 4A 3301 10026 00 MULTIPLEXER Ics 3301 10028 00 HEX SCHMITT INVERTER IC6 3301 10033 00 64 K MEMORY 3301 10030 00 TIMER IC8 3301 10029 00 QUAD OPERATIONAL AMPLIFIER 1 9 15 18 20 3301 10006 00 QUAD FET INPUT OPERATIONAL AMPLIFIER IC10 3301 10013 00 QUAD ANALOG GATE IC11 3301 10014 00 DECODED COUNTER IC12 3301 10012 00 DUAL D FLIP FLOP IC13 3301 10010 00 QUAD NOR GATE IC14 3301 10017 00 HEX INVERTER IC16 3301 10031 00 DUAL TIMER 1 17 3301 10021 00 ANALOG MULTIPLEXER IC19 3301 10005 00 TRANSCONDUCTANCE AMPLIFIER DIODES D1 2 3 4 5 6 7 8 9 3302 20008 00 SILICON DIODE D10 11 12 13 14 3302 20008 00 SILICON DIODE RESISTORS R36 60 61 3303 04700 10 470 1 4W 5 R58 3303 08200 10 820 1 4W 5 R11 12 3303 01001 10 1 4W 5 R23 57 70 90 3303 01001 10 1 4 5 R33 3303 01201 10 1 2K 1 4 5 R13 23 37 38 59 69 74 3303 02201 10 2 2K 1 4W 5 R15 103 104 3303 02701 10 2 7K 1 44 5 R1 2 6 7 14 77 3303 03301 10 3 3K 1
14. Message Alternate OTX Hailing over all Functional Description SW2 5 timer timer 207 223 This function can be used alone or in conjunction with the non direct access features of the MRTI Mobile originated calls can allowed by OTX switch settings If parameters 255 and 239 are set to require a or for direct access calls normal land to mobile calls can be allowed 5 1 9 1 9 This setting allows direct access calls the amount of time set by Parameter 207 5 to 45 seconds unless a system mobile transmission is detected If no transmissions are detected in the time set by Parameter 207 disconnect will occur However if a system transmission is detected such as a mobile response to the land line caller this message hailing timer is disabled and the alternate overall timer Parameter 223 is enabled allowing an overall time of 1 to 9 minutes This function can be used to help conserve air time on direct access calls If the land line caller originating a direct access call does not reach the desired mobile and either neglects to send a to release the MRTI or does not have Touch Code phone the MRTI would remain accessed until one of the standard timers timed out With this function set that time can be limited from 5 to 45 seconds The command from a system mobile if enabled by SW2 4 on the OTX board being on has the effect of turning SW2 5 off only for the duration of the
15. R22 pe 5 7 RELAY RC MODEL ORCTX I lt R27 SYNTOR MODEL ORCTX 2 2 Rze 7 MOTRAR MODEL ORCTX 3 RIS R23 6 6 IN FOR MOTRAR TRUNKING 6 lt 5 22 ONLY A 9 R20 R24 be 7 C5 MFD ISNOT SHOWN d T 5 Exe ic ics ies 166 iz ico icio REMOTE CONTROL orcTx t ele Jjejeje P EHEHHHHORU mac ORETX 2 Le xs Mode 9 10 P INPUT OUTPU TPROG JUMPERS ARE FOR SP APPLICATIONS FIXED FREQ REVERT ETC 03171983 L 5 IAI PARTS LIST ORCTX 1 REMOTE CONTROL MODULE REFERENCE SYMBOL 2 9 11 12 13 14 15 16 29 R2 3 4 5 6 7 8 25 26 R27 28 R1 R17 18 19 20 21 22 R23 24 LED 1 2 3 4 5 6 7 IAI PART NUMBER 3301 10037 00 3301 100 7 00 3301 10023 00 RESISTORS 3303 01001 10 3303 02701 10 3303 01002 10 3303 01002 10 3303 02702 10 3303 01003 10 3303 01003 10 CAPACITORS 3306 00750 00 DESCRIPTION INTERGRATED CIRCUITS HEX BUFFER HEX INVERTER 8 BIT LATCH 1K 1 4 5 2 7K 1 4W 5 10K 1 4W 5 10K 1 4 5 27K 1 74W 5 100K 1 4W 5 100K 1 4 5 LIGHT EMITTING DIODE C2 4 3306 01000 00 100PF CERAMIC C3 5 3306 01003 00 1 CERAMIC C1 3306 41004 00 1MF 35V TANTALUM CONNECTORS P121 3311 10015 00 15 CIRCUIT HEADER P9A 3311 10025 00 25 CIRCUIT HEADER J9 3311 20025 00 25 CIRCUIT BOARD CONNECTOR 180382 MISCELLANEOUS 3302 20008 00 3310 00191 00 PAGE L 6 SILICON DIODE REED RELAY 5
16. 3 P L Stripping Run a wire to the CD code disable stake pin on the P L deck 4 Reverse Burst Inhibit Run a wire to the P L deck as follows digital P L deck to E3 stake pin Tone P L deck to junction of R18 R22 Now connect the P12 interconnect cable to 1 and TB2 as follows P12 Cable Color To Function brown designated spare TX P L stripping red TB2 4 ground orange designated spare reverse burst inhibit yellow TB2 4 ground green TB2 4 ground violet TB2 4 ground gray designated spare RX detected audio white TB2 5 PTT black designated spare detect tan TB2 6 mike low pink TB2 7 mike high Earth Ground Run the supplied 12 or larger wire from the EARTH GROUND terminal on the MRTI to the base station chassis ground This wire must be as short as practical not coiled and fastened securely to the base station chassis Connection complete Page 3 RIMX Switch Settings Set the switches as follows 541 on private line system off for carrier squelch SW2 off SW3 don t care SW4 off SW5 off SW6 off OTX Switch Settings Set the OTX switches as follows SW1 section 2 on 581 section 3 on SW2 section 1 off All other switches are programmed as applicable to system requirements Refer to the OTX Switch Settings section in the MRTI Instruction Manual then go to the Level Setting section Page 4 2617 86 7 OL 911015 184 5 WAIUYLIW XZTJWIZ HoYvas 1W VDIS
17. 3 brown TX PL disable 10 black RX PL detect 8 white push to talk 1 orange reverse burst inhibit 2 yellow reverse burst inhibit return Note The orange and yellow lead reverse burst inhibit and return need be connected only in the signal search mode Earth Ground Run the supplied 12 black ground wire from the MRTI EARTH GROUND terminal to the base station chassis This wire must be as short as practical not coiled and connected securely to the base station chassis If this is a control station in a repeater system that transmits PL DPL during transmit turn off delay it is necessary that the repeater set for zero turn off delay See note 2 below Connection complete Page 10 RIMX Switch Settings Set the switches as follows 581 on private line system off for carrier squelch SW2 off SW3 don t care SW4 on tone reed off tone reedless off DPL 585 on SW6 off OTX Switch Settings Set the OTX switches as follows SW1 section 2 on SW1 section 3 on SW1 section 8 off SW2 section 1 off All other switches are set as applicable to system requirements Refer to the OTX Switch Settings section in the Instruction Manual and then go to the Level Setting section Notes 1 MAXAR Quadrature Detector Adjustment can cause receiver response time problems especially in DPL systems This can adversely affect MRTI operation especially in the Signal Search mode The following procedure will ensure
18. 390hz 430hz to a high frequency tone 800hz 840hz add 1 else add 0 b To increase the amplitude of the ringing tone add 2 else add 0 does not affect selective signalling tones c To cause ring or selective signalling to be repeated every 8 seconds add 4 else add 0 The resultant control digit will be from 0 to 7 Variable Mobile Inactivity Timer Description The standard mobile inactivity timer is set to 60 seconds SW2 Section 3 on the OTX board on This parameter can set the mobile inactivity timer from 32 seconds to 4 minutes 48 seconds in 32 second increments When 5 2 Section 3 on the OTX board is off the mobile inactivity timer is completely disabled Installation The parameter modification procedure detailed under Option 155 6809 is used to install this parameter Parameter 191 Mobile inactivity timer the number of 32 second periods of mobile inactivity allowed before disconnect If set to 0 the standard 1 minute mobile inactivity is used NOTE The following direct access control parameters 239 and 255 provide access control to attendants and or land line callers FCC regulations concerning this kind of operation vary depending on type of service accessability etc Therefore be sure that regulations applying to this system are not violated before programming these parameters to value that would allow direct access to attendants and or land line ca
19. Page 10 2 Local speaker audio amp output The amplifier should be properly loaded to prevent frequency response problems associated with some transformer type output circuits The amplifier output level and local squelch control setting must be adjusted at installation and the settings maintained Carrier detection in this method is switch selected for the RIMX carrier detect logic input utilizing the repeater receiver squelch circuits or for the receive audio vox detection by the MRTI audio circuits not recommended 3 Other intermediate receive audio source on the repeater receiver utilizing one of the two carrier detect methods described above Mobile carrier detect as mentioned above is necessary for control and for mobile timer reset and control function recognition The RIMX provides switch selectable carrier detect options The MRTI also examines the repeater receiver private line decoder output via the PL detect logic level output PL Detect logic level input On carrier squelch only systems this input is switch disabled to provide a continuous PL detect condition PTT output connects to repeater This PTT signal keys the repeater transmitter without disabling the repeater receiver audio circuits Transmit Audio output is also balanced to provide hum noise immunity and connects to the repeater exciter audio input The output is virtually transparent to circuit impedances of 600 ohms or le
20. TONET 5 4 RTB R 100K 7 87 ONEZ XIN 1 Pos 16 LNR GND ons R74 5 8 R172 C23 7 1 10K RX DEFEAT 3 ri P9 R107 RIOS OPT c 56 2K 93 9 2 I21K L 9 PIAI PA2 V METER 2 Rel 7 10 PAI 15 12148 R62 PIA4 PIAS PBO Il P O C45 2 chz 75K 121 1K Am OUT R145 15K TX DEFEAT R205 27K GEN2 38 9 2 2K 4 DIS 237 c39 5 SNB R186 15K B TXS TX IN 14 14 68 K 1 o PL DET 9 16 42 T R87c43 005 RI77 aw opt2 27K CARRIED 17 6 8 6 3 52 19 49 9 49 9K RIT8 IN FROM gt i 1 IS SNS IN 6 gt 82K 16 6 gt gt 21 3 NOTES LOG GND gt 25 RUI 1522 CAPACITOR VALUES IN MFD UNLESS STATED OTHERWISE N 27 5 2 4 74 LNR GND gt 24 2 6 2 RESISTOR u OHMS er a BLANK 12 B2 8 3 DIODES ARE IN9I4 R RS 756 2K 339 2K IK 4 TRANSISTORS ARE 2 4401 8 255 ane g 10 K 5 INDICATE CONNECTION TO45 J10 BM Nc R258 4 7K a lO 7 ces R LO 4 6 5 cure Testy 8771 SYSTEM PROCESSOR 21418 PIA4 4 2 39 1 MONITOR A 8 res 2 3 5 Denotes solder dot jumper some are plated tn R237 2 7K mE MODEL 9 inside pin no s refer to 24pin ROMs outs
21. The outstanding feature of this mode is that telephone conversation may be carried on simultaneously in both directions as with standard home or office telephones To access connect the telephone line press the button on your Touch Code encoder When dial tone is heard enter the telephone number You should follow the telephone number with another This second tells the MRTI that you are finished with telephone number signalling If you omit this the MRTI will assume you are finished six seconds after the last digit is entered and then open the voice path to the telephone line When the telephone line party answers you may converse in the usual manner At the end of the conversation press the button to release hang up the telephone line The MRTI will confirm release with a series of short beeps Now refer to the General Description section for further instructions and discussion of optional equipment Page 3 GENERAL DESCRIPTION Common to all modes of operation The previous sections have covered the mobile originated telephone call The telephone caller originated call proceeds in two different manners depending on installed options If special information security code selective signalling code trunking format etc is required to initiate mobile signalling refer to the applicable option section in this manual for operational details Special Instructions Apply Yes No Refer to Section s When the teleph
22. and red wires in Test 2 should be less than 15 ohms Check the interface to the radio processor system correct as applicable This completes basic functional testing of the MRTI Carefully compare the switch settings of Switch 1 and 2 on the OTX board with the definitions in this manual under Switch Settings Page 40 Other Possibilities If your unable to resolve the problem by following the preceding flow chart then refer to the System Self Tests section of this manual Every input and output can be tested using these procedures Ensure that the orange inhibit lead is not accidentally grounded inhibiting the MRTI see test 1 Ensure that the ground lead from the MRTI to the radio is in place and electrically sound To ensure that option programming multi digit access multi digit release selective signalling etc is not causing seemingly defective performance disconnect power and remove all option ROM s labeled with one or more of the following 2 letter designation UT AD SS leaving only basic ROM s Labeled with the following 3 letter designation BSC Retest If correct performance is obtained reinstall ROMs and check NVRAM programming see variables parameter modification procedure under E155 TDN6908A and other applicable option sections Page 40 A R2I 24052 R EE UN RIO 44 90211 NOTE CIRCUIT BOARD IS SHOWN FROM COMPONENT SID
23. be installed from P701 on the P L encoder board to P964 on the transmitter interconnect board This jumper is also used with the paging P L defeat option Installation of P12 Interface Cable Cable Color To Function Red screw terminal 1 P L stripping return green screw terminal 1 PTT return violet screw terminal 1 RX audio return tan screw terminal 1 TX audio return brown screw terminal 9 P L stripping gray screw terminal 13 RX disc audio white screw terminal 14 Repeater PTT pink screw terminal 15 TX audio black screw terminal 17 P L indicator Earth Ground Run the supplied 12 or larger wire from the EARTH GROUND terminal on the MRTI to the base station chassis ground This wire must be as short as practical not coiled and fastened securely to the base station chassis Connection complete continued Page 19 RIMX Switch Settings Set the switches as follows 581 on private line systems off for carrier squelch SW2 off SW3 don t care SW4 off SW5 off SW6 off OTX Switch Settings Set the OTX switches as follows SW1 section 3 on SW1 section 8 on SW2 section 1 off All other switches are set as applicable to system requirements Refer to the OTX Switch Settings section in the MRTI Instruction Manual and then go to the Level Setting section Page 20 45417 88 7 QL Qoy WYWDY KJ DWIDWDAJLNL OVIDINAAS TO 51078 15 HO LY WN AU dO 100 5 581
24. circuit performance and overall quality of the land line to mobile audio Before proceeding disable the private line encoder output or remove PL reed so that no PL code tone is transmitted during the tests Now press the gray test button once for test 1 as shown on the numeric display of OTX board After one second the MRTI will output the Touch Code signal to the transmitter Adjust the TX LVL control on the RIMX for 3 0 khz deviation Press and release the test button stepping to test 8 as indicated on the display The purpose of this test is to determine IDC circuit level set and performance The MRTI will output a sequence of nine tones numbering 0 to 8 on the display The sequence may be stopped at any tone by pressing the red reset button during that tone interval Pressing the reset button again will resume the sequence With proper IDC level setting the deviation levels should be as follows w o PL Tone number 0 approx 1 3 khz deviation 697 hz Tone number 7 approx 2 5 khz deviation 1633 hz Tone number 8 approx 4 5 khz deviation 2000 hz Tone number 8 is 5 db higher in level than the other tones and should put the IDC circuit just into limiting If these levels are not closely duplicated it will be necessary to readjust the transmitter IDC level and check the modulator circuit tuning if any After testing is finished step the test button to the off position The test condition will time out
25. contained in ROM firmware marked AD Shipped with all Auto dial functions enabled Refer to Section G of the instruction manual 3 E380AA TDN6898A Selective Signalling contained in ROM firmware marked 58 Shipped with all Selective Signalling Options disabled Refer to Section H of the instruction manual IMPORTANT The importance of proper grounding for logic reference and lightning protection cannot over emphasized Therefore a copy Grounding and Lightning Protection is included as the first page of these instructions When installed utilizing the methods outlined a very high degree of surge and lightning protection is provided both to the MRTI and companion equipment Page 1 MRTI Grounding and Lightning Protection To provide ground reference for the logic inputs to the MRTI and to enable the extensive lightning and surge protection in the MRTI the MRTI must be ground bonded to the associated radio equipment through the supplied 12 wire or larger by connection to the bolt marked EARTH GROUND on the MRTI rear panel and to the radio equipment frame The connection to the radio frame should be to bright metal that is a part of the radio proper such as an internal side rail the connection marked GROUND on the newer series of base stations or by removing one of the antenna connector screws and using a lug of the correct size on products such as MAXAR MOXIE This grounding should be extended to the ground ut
26. if a station PTT has occurred in that time and at the end of each phone patch on release or every 15 or 30 minutes only D 1 Installation If field installed the ROM containing the utilities software should be carefully installed into its designated socket being sure that the notched end is as shown on the OTX board layout in this manual The following chart will be used to convert SID characters to numbers to store in the NVRAM 1 01 a 11 k 21 31 2 02 b 12 12 55 22 v 32 3 03 13 m 23 w 33 4 04 d 14 24 34 5 05 15 25 35 6 06 16 26 2 36 7 07 g 17 27 8 08 h 18 r 28 end of word pause 37 9 09 i 19 5 29 end of ID 00 0 10 j 20 t 30 Using the table above establish the number pairs for the ID you wish to install Install these numbers starting at parameter 01 one number per parameter location using each successive location until finished with end of 00 The processor will ignore anything left in unused parameter locations up through 20 Parameter 01 20 Station identification code as determined above 21 SID control digit determined as follows Starting with 0 If SID is turned on add 1 else add 0 SID off If SID every 15 minutes add 2 else add 0 30 minutes If SID also after every phone patch add 4 else add 0 no SID after patch The resultant control digit will be between 0 and 7 When properly s
27. isolation from lightning type impulse voltages on the telephone lines when properly installed and grounded in the radio system as detailed in this manual under lightning protection The RLM 3 also provided the time averaged signal power limiting circuitry as well as the out of band signal limiting chracteristics required by FCC regulation for registration under the most demanding device category regulation VP The LIM 1 module the RLM 3 monitors dc and ac voltages on the telephone line converting them to levels and signals usable by the OTX control module Pin 4 of the RLM 3 outputs switched network audio accessed or not accessed at the same level as seen on the telephone line Additionally the dc level is logic high when the PSTN voltage is below approximately 17 volts and logic low when the PSTN voltage is above approximately 17 volts This indicates to the OTX control module when the line is in use by another party or defective Pin 3 of the RLM 3 outputs logic high when the voltage on the PSTN exceeds approximately 65 volts and logic low below 65 volts module uses this information to detect ringing on the PSTN after checking the period of several transitions to insure the signal being received is ring and not dial pulses The OTX module accesses and pulse dials the telephone line if applicable by putting logic low on pin 5 of the RLM 3 RIMX Radio Interface Module The RIMX interfaces the radio system re
28. 0 The resultant control digit will be from 0 7 4 B tone length Varies the length of the B tone from 1 second to 9 seconds as follows 0 standard 2 second B tone 1 9 length in seconds of the B tone For example if parameters were set as follows 30 2 34 2 35 1 36 2 37 4 38 39 don t care 40 4 and 41 3 The conditions set would be as follows 1 2 digits accepted from caller 2 2 tone sequential signalling 3 code plan M selected 4 4 would be the lst hundreds digit of cap codes continued H 5 conditions cont d 5 group call timing would be enabled mobile to mobile revertive calls 6 A tone 1 second B tone 3 seconds Therefore if caller dialed 79 as the selective signalling digits the would send the two tone sequence 1 second A tone 3 second B tone corresponding to cap code 479 of code plan M A tone 470 5hz B tone 524 6 hz If a mobile wishing to dial a group of other mobiles entered 55 as the selective signalling digits the would send 8 seconds of B tone 422 1 hz NOTE In many applications below 800 MHZ the maximum allowable mobile signalling time as prescribed by FCC regulations is three 3 seconds Therefore be sure that regulations applying to this system are not violated before programming parameters 40 and or 41 to values that would cause the MRTI to signal mobiles for more than the allowed time
29. 01003 10 100K 1 4W 5 R14 3303 01203 10 120K 1 4W 5 R31 3303 04703 10 470K 1 4W 5 R10 R24 3303 01004 10 1MEG 1 4W 5 R19 3304 04992 10 49 9K 1 4W 1 R32 3303 02701 10 2 7K 1 4W 5 CAPACITORS C1 C2 3306 35900 00 1MFD TUBULAR C3 C4 3306 11030 00 01 DISC C5 C9 C10 3306 01003 00 1MFD CERAMIC C7 3306 44704 00 4 7MFD 20 VDC TANTALUM C8 3306 41004 00 1MFD 35 VDC TANTALUM C11 3306 02700 00 270 PF CERAMIC LED 1 3306 00750 00 LED C6 3306 41505 00 15MFD 20V TANTALUM 973185 PAGE 42 PARTS LIST RLM 3 LINE INTERFACE MODULE REFERENCE IAI SYMBOL PART NUMBER DESCRIPTION COILS L1 L2 L4 3307 00010 30 1 2MH CHOKE DC RESISTENCE 15 L3 3307 10000 00 CHOKE ASSEMBLY DC RESISTENCE APPROX 5 TRANSISTORS 01 04 05 3309 44010 00 NPN TRANSISTOR 02 93 3309 44030 00 PNP TRANSISTOR MISCELLANEQUS LIM1 3312 10000 00 LINE INTERFACE MODULE 51 52 3312 20000 10 TRANSIENT SUPPRESSOR VR1 3312 42000 00 OPTO ISOLATOR Fl 3312 10125 00 1 8 A FUSE F2 3312 12500 00 1 4 FUSE R101 3305 05001 00 5 1 3308 03873 00 AUDIO COUPLING TRANSFORMER K1 3310 00008 00 RELAY P7 3311 10007 20 7 POS HEADER 021684 PAGE 42A 2913 oto e Jet iso eel 5i 064 90 e 9cIu0 629 AF 014 1018 254F O eu Q 46 zzo N H EEE E SBE JE 419 N eo o yS wo
30. 4 5 R18 24 3303 03901 10 3 9K 1 74W 5 R22 56 100 114 3303 04701 10 4 7K 1 4W 5 R58 3303 08201 10 8 2K 1 4 5 R20 21 3303 01002 10 10K 1 4W 5 R32 34 55 3303 01002 10 10K 1 4W 5 258 65 66 67 68 82 3303 01002 10 10K 1 4W 5 R83 91 92 3303 01002 10 10K 1 4W 5 R16 3303 01801 10 1 8K 1 4W 5 R39 48 86 87 52 3303 01202 10 12K 1 4W 5 R94 3303 01502 10 15K 1 4 5 RS 10 3303 01802 10 186 1 4 5 R49 50 51 3303 02202 10 22K 1 40 5 R53 62 76 3303 02202 10 22K 1 4 5 R30 3303 03302 10 33K 1 74W 5 R84 85 3303 03902 10 39K 1 4W 5 180383 PAGE B 3 PARTS LIST DSVX ENHANCED VOX MODULE REFERENCE IAI SYMBOL PART NUMBER DESCRIPTION RESISTORS R72 3303 04702 10 47K 1 4W 5 R64 3303 06802 10 68K 1 4W 5 R4 9 3303 01003 10 100K 1 4W 5 R101 3303 01003 10 100K 1 4W 5 R102 108 3303 01003 10 100K 1 4W 5 R71 3303 01503 10 150K 1 4W 5 R31 3303 02203 10 220K 1 4W 5 R73 3303 06803 10 680K 1 4W 5 R35 3303 08203 10 820K 1 4W 5 R54 3303 01004 10 1M 1 4W 5 R63 3303 02204 10 2 2 1 4W 5 R3 8 3303 01005 10 10M 1 4 5 R75 3303 05602 10 56K 1 4W 5 R27 29 3304 01002 10 10 0K 1 4 1 R47 3304 08252 10 82 5K 1 4W 1 R26 28 44 3304 01003 10 100K 1 4W 1 R40 3304 01213 10 121K 1 4 1 R41 42 3304 01503 10 150K 1 4W 1 R45 46 3304 02003 10 200K 1 4W 1 R43 3304 06812 10 68 1K 1 4W 1 CAPACITORS LED 1 LED 2 3306 00740 00 LIGHT EMITTING DIODE C29 38 51 3306 00220 00 22PF CERAMIC C22 3306 0100
31. 40 H 2 5 a Ca L 29 Rb ue uj q2 MU NN c T d lt NV M 2 WOH 13534 21 1631 73777770 gt a 2 z Wve 5 58 wes 121 25 5 2 xm 929 we 5 zd u Alo 12 9261 cog 0 s 2 lt d E R 2 J XIO 72 405532009 WILSAS ILAN PAGE 48 73084 saky MRTI SYSTEM PROCESSOR OTX C Model 0 28 R26 et 4 4 RIS R20 o 8 R303 C5C6 4 9 FIJE 1 3 8 4 RI7 D3 RI8 D2 8 b T cl P2 LNIOd 1S31 694 508 DYI o M Ke S 5 E 1511 NU o LN ame d o U m r elel GA 8 S SSSR c q 5 Ecc m 9 9 e 2 iar 40 2 8 4 SE T o_ x 878 4 8 I 20 D C75 SWI swe C o q 5 RTPI amp K z x gt J OO u 2 Lu 9 pes pu p sma 1 i st 5 M gt gt 5 2 t r O b ro A 2 L Be 222 S Ets JF a 252 2 z 2 5 2 9000 I s 1041402 ANOWSW tot of TI
32. 5 7 K1 2 3 1 2 Swi F1 011184 3307 00010 20 3307 00099 40 3308 03974 00 3309 44010 00 3309 41820 00 3309 41720 00 3310 00191 00 3312 10000 10 3312 01006 00 3312 11500 00 PAGE 47 SWITCHING CHOKE ASSEMBLY CHOKE BEAD TRANSFORMER NPN TRANSISTOR NPN TRANSISTOR PNP TRANSISTOR REED RELAY TRANSIENT SUPPRESSOR 6 PST DIP SWITCH 1 5A FUSE 4121 9121 9121 6v2H rel 22H leu 0 0 0 0 5 ld Oz 21 1 712 U il 4k 0 0 O24 9 ANIOd 1531 508 OUI 413 T LNIOd 1531 d ae O3 JF 6v sa ak ico OE vwa 0089 91245 92 21 S2 2I 4465 GE peu 8221 Y ACZ Gers evo 20 429 ed azzy te O isei Taia vrza E 19 ELE pro 825 dr soa 5 u eco o 8 IS S i on a O isu Ezz 86l Azo Ou OZzzu 2 uo 0 5 O 1608 5294 158 oz 90cu 231 Sou 9201 esu 00229 jet or Ovo ost 6 91 w 8821 Equo OFou Ou 1 801 4 zal uuo d 5 2 5 Mor T 25 of 11511 LNIOd som exu 198 e w 222222 1531 o GG aa ONS SV3NIT 5614 tz 2 6 0 Na o lt o Su T s o IMS sto 8121 t WO NOM 66 eat GZIUO a tiO Lz40 02 6
33. 7 8 o a En Glowa wel 83 85 D BG 0 Sm Wor Dod o o Lo e o 9 05100 0 Noliko ar AC O SWQ amp lewd NIL ROSY Puvut Pog cay VIAL 25 soe Mix odd mowila odd 3 m ulone ST Duy Vo O odd bend Lime ast gt x Pogisa Usual Loath Gola kaa aa TE O 5 lone looms mafi mS Cv oA m X 50 JU oj Yowzo IOO A Toma med 2044 arene Z Ticks Towel XT O omagiu eal ada gt Am a blu E 5844 priate hucuma Ja a mea 2 4 XII Shana maiko Sem stats O add o omda 390 430 na odd e Ha odd 0 A amp nob Xi Usualle mobile Tumsa Sog on mmm 4 gt 32 A 2021 lab NAM Qa e todd XV ated A O m Cone stumdi Sees A T a Jom To Coma ofa tu molls Lume Colla 1 NO ce Md 1 aulb 222 aftar malile M Mag aad Pom mo 8 Menaio ge xvi PORAJ 02 5 ON Os Trawa 552c KV
34. 7 on the DPL deck to TRN6207A and J601 Pin 4 E similar reverse burst Necessary for signal search mode only disable tone PL reed type TRN6177C and similar Remove the lead on the PL deck that comes from J601 Pin 1 PL on off from hang up box and solder it to Q406 base MFD RF decoupling capacitor between base and emitter of 0406 Connect JU401 to HD note there are two 704018 shown on the board pictorial The correct one for this function is the one that grounds the emitter of Q409 when connect to pin HD Page 14 Solder the supplied 01 tone PL reedless type TRNA237A and similar digital PL TRN6207A and similar Remove the lead on the PL deck that comes from J601 Pin 1 PL on off from hang up box and solder it to 0401 Pin 36 Remove the lead the PL deck that comes from J601 Pin 2 hang up box ground and solder it to the junction of C414 and R408 on the PL deck Remove R421 on the PL deck between 0401 7 and Pin 26 Solder the supplied diode into the JU102 holes on the main circuit board close to squelch control with the cathode toward mic PTT Dun Remove the lead on the PL deck that comes from J601 Pin 1 on off from hang up box and solder it to 0312 base Connect JU302 to Pin pon The monitor function is now via the front panel and or desk mike monitor switch Now connect the 712 radio cable to the base st
35. Code Tones to Land Line Description This function allows the length of the Touch Code tones sent to the land line during land line signalling dialing a phone number to be varied to compensate for slow tone receivers in the central office This function is only operable when Touch Code tones are being sent not applicable during rotary signalling The default value of 0 will cause standard land line signalling the first tone 250 milliseconds and successive tones 100 milliseconds 11 tone off times are 100 milliseconds Installation The parameter modification routine as described under Option E155 TDN6908 in this manual is used to install this parameter Parameter 127 Variable length Touch Code tones to land line The number of 50 millisecond periods in each Touch Code tone range 1 9 50 milliseconds to 450 milliseconds tone on time tone off time always 100 milliseconds D 8 kaqa akakaw kasi ss s III U Emergency Call Direct Access Description When this feature is enabled a caller or attendant that has dialed into the MRTI and been answered by the MRTI and is waiting channel busy another call no mobile answer etc can declare an emergency and be immediately connected to the radio by sending a full three second The MRTI will recognize the long say Connecting or conferencing as applicable emergency call on line x and gate on co
36. MRTI automatically adjusts the levels in both the mobile to land line and land line to mobile audio paths within a 15 db range The radio interface module RIMX incorporates receive audio input programming switches to establish ballpark input levels Receive audio input is through a high impedance balanced differential circuit to eliminate hum and noise pickup and adverse loading affects on the audio source Repeater receiver audio may be taken from several places as follows 1 Preferred discriminator or quadrature detector output prior to high frequency rolloff This method provides audio unaffected by level controls within the repeater Also the RIMX squelch circuit provides carrier detect to the MRTI eliminating model to model receiver squelch circuit performance variations 2 Local speaker audio amp output The amplifier should be properly loaded to prevent frequency response problems associated with some transformer type output circuits The amplifier output level and local squelch control setting must be adjusted at installation and the settings maintained Carrier detection in this method is switch selected for either the RIMX carrier detect logic input utilizing the repeater receiver squelch circuits or for the receive audio vox detection by the audio circuits not recommended 3 Other intermediate receive audio source on the repeater receiver utilizing one of the two carrier detect methods described above
37. TDN6901A Motrar Sub fleet Control From Mobile 1 of 4 switch format 1 Operator 1 5 L 4 2 Installation L 4 3 Board Layout ORCTX 3 L 5 4 Schematic Diagram L 5 Parts iS a L 6B M E384AA TDN6902A 1A2 Key Telephone System Annunciator 1 Operator Instructions M 1 2 e eese RE e eene Mel 3 Board Layout M 2 4 Schematic Diagram M 2 5y Parts LTSETA PRO SAR a S2 M 3 III MRTI OPERATOR INSTRUCTIONS The MRTI Microprocessor Radio Telephone Interconnect is capable of operating in four different modes to work with different types of radio systems Each of these types of systems requires a slightly different set of mobile operating instructions Therefore refer to the section that applies to your system Signal Search Simplex Mode In this mode the MRTI is installed at your base station To access the telephone line connect push the button on your encoder In about two seconds you should hear the dial tone interrupted by short bursts of squelch noise These short bursts are sample intervals during which the MRTI is searching for your transmitter signal and are heard only by the mobile radio users When dial tone is heard you may enter the telephone number stre
38. The control digits and numbers are entered as described under Option E155 TDN6908 Parameter Modification Procedure The following chart shows locations and definitions D 5 VI VII Parameter 56 Number of digits in restrict prefix 1 0 4 0 disables this restrict prefix 57 60 Restrict prefix 1 61 Number of digits in restrict prefix 2 0 4 62 65 Restrict prefix 2 66 Number of digits in restrict prefix 3 0 4 67 70 Restrict prefix 3 71 Number of digits in restrict prefix 4 0 4 72 75 Restrict prefix 4 76 Number of digits in allowable No 1 0 9 0 disables this allowable slot 77 85 Allowable Number 1 or Prefix 1 86 Number of digits in allowable No 2 0 9 87 95 Allowable Number 2 or Prefix 2 After installing and storing the numbers the shadow memory test all functions for normal operation Mobile Signalling Start Description This feature is used when standard lst or 4th ring signalling start is not adequate for system requirements Land line originated calls will ring from 1 9 times as programmed before mobile signalling is initiated Installation The parameter modification routine as described under Option E155 TDN6908 in this manual is used to install the control digit Parameter 99 Number of rings before start of mobile signalling 1 9 if 0 OTX SW2 Section 6 determines number of rings Control of External Devices using the Security Code In some installations it is desirable to operate ex
39. Yo WYWODY ONITAYDYSIN Qx 7d440 axm HLYVI 13 9 005 sissy 4 2 23978 2 35 5 0 NOULALS oret s x3 Hdim 2179 v9 Wo 92 OL NISOHI SINIYA LL 22 1 wo aasawn oL 719005 e 1d 32938 leva See S ga 985 481 lt oi ai3Q xit NV XO l HNI Lswng JYNYJD U 5 OM fatal ULE Td vmoas uy woe 1 1 0 42 4 IH 01 wad Td 4441 q vnozo NVNOLYLS 3509 FLLAITOSNOD gt 32LlW 13 321745 9719 ONIDIAY JS Od 51015 SISSYHO 40 100 34116 5319405 J1ON X 244 e ANI INO 3173 1 09 7905 xw1inaow DIDA DOSN gt 14 Qa31 v00W ss 21907 0 42510934 ONIN LHI O 09772204 LPINNOJDARLNI AOLPNQNOJLTAW X w3wW odsNWaL Nr 9f 1d vM 031883 MITREK CONSOLETTE Enhanced VOX Simplex Mode Install the following modifications additions to the base station utilizing spare screw terminals 1 and TB2 1 RX Detected Audio Run a wire to DETECTED AUDIO available at solder strip TB4 5 6 2 P L Detect Run a wire to SQUELCH DISABLE on the MITREK transmitter receiver board Set up the P L detect circuit output for or squelch operation JU1 in JU2 out on the P L deck If the busy light kit is NO
40. a jumper for turn off delay but many of them will delay turn off more Page 11 than second even though the 0 position is selected these cases reducing the timing capacitor to a much smaller value will produce the required results for example changing 011 on repeater TLN4662A squelch gate module from 68UFD to 4 7UFD 60 Second Mobile Inactivity Timer In the Enhanced VOX Simplex Mode the land line caller cannot be interrupted by the mobile until the 30 second timeout Therefore it is possible for the mobile to hear the warning ticks and not be able to reset the inactivity timer because the land line party is talking Therefore it is recommended that the mobile inactivity timer be disabled SW2 Section 3 on the OTX board turned off in Enhanced VOX Simplex systems If the mobile drives out of range the three minute access timer will prevent the MRTI from staying accessed indefinitely SW2 Section 5 on the OTX board turned on Page 12 N ILYLS 021N02 WwXww 1551 5817 ONIJDINYIS YOd WWYDWIA PNITISWDYZLNI SL EN I AO 100 0 75 53178942 310N 9 Zi ll 682 sais S 9 G3 Tddos LON sm 21 QNnO2S H1WYJ ae sissyHo gt 3NI 1 43 1731 03119405 AWA 21 qartddns du10 DLICY 2050 Hum 318142 473 139 Td GALS QHLNNOW SZA NYNIIA 21907 NoILJILOWJ O9NIN LH9 7 031794
41. after access 3 minute timer disable xis before access answer if called special applications after access flash momentary on hook to regain dial tone where applicable attendant access code 1 TX PL tone on TX PL tone off E381 TDN6899 Mobile Control of External Functions Option N function on where is one of 7 functions N 3 9 N function off E377 TDN6895 MULTI FUNCTION UTILITIES OPTION multidigit access code 1 4 digits JN multidigit release code N 1 4 digits OffN executive override code N 1 6 digits overrides a variety of programmed restrictions E378 TDN6896 OPTION CONTROL 9 NUMBER AUTO DIAL I 1 dials stored telephone number 1 9 dials stored telephone number 9 E379 TDN 6897 OPTION CONTROL 99 NUMBER AUTO DIAL II 01 dials stored telephone number 01 99 dials stored telephone number 99 AUTO DIAL TELEPHONE NUMBER ENTRY FROM MOBILE MRTI must not be accessed O auto dial programming command followed by L telephone number memory location 1 1 2 digits as applicable followed by N N telephone number to be stored N 1 16 digits at memory location L entered as a telephone number digit causes 1 25 second pause in auto dialing followed by memory store command causes telephone number to be stored at memory location L i reset to start over anywhere in the sequence E380 TDN6898 SELECTIVE MOBILE SIGNALLIN
42. allow for specific equipment requirements EXAMPLES 01 will cause the number stored in location 1 to be dialed will cause the same number in location 1 to be dialed 28 will cause the number stored in location 28 to be dialed if E379 TDN6897A is included in this MRTI If commanding auto dial from a location that is empty or the appropriate option has not been included for the location requested you will receive no response from the MRTI 2 Storing Numbers in the Auto Dial Memory To store auto dial numbers proceed as follows MRTI must be idle not accessed a Dial 0 puts in auto dial entry mode b Dial the location number 1 9 Option E378 TDN6897A 1 99 Option E379 TDN6897A followed by a end of location number c Dial the number to store up to 16 digits d Dial store command EXAMPLES 1 25 9 481490 will store the number 948 1490 in Location 2 2 0 34 1800555121 2 will store the number 1 800 555 1212 in location 34 To cause a 1 25 second pause between numbers being auto dialed enter a where the pause is desired it is counted as one of the 16 digits Note Refer also to Parameter 100 this section for increased paused length EXAMPLE 0 9 OF 19015265261 would store in location 9 and when auto dialed would dial 9 possibly outside line pause 1 25 seconds allowing equipment to respond and then dial 1 901 526 5261 To cause revert to
43. and similar supplied female connector pins where Run a wire from U10 Pin 6 to J601 13 wire for meter 2 may be in Pin 13 of J601 and possibly could be rerouted and used for this function Run a wire from the PL DPL code disable Pin CD or TD on the PL DPL deck to J601 3 Locate and remove the soldered in JU401 and install a 100k 1 4w resistor in its place NOTE there are two 2040185 shown on the board pictorial The correct one for this function is the one in series between U401 Pin 13 and Q409 base This resistor allows Pin 13 of U401 to swing between detectable logic levels Remove C428 and replace it with 1 MFD capacitor observing polarity Run a wire from U401 Pin 13 to J601 Pin 10 wire for meter 1 may be in Pin 10 of J601 and possibly can be rerouted and used for this function Run a wire from U401 Pin 28 on the PL deck to J601 Pin 10 wire for meter 1 may be in Pin 10 of J601 and possibly can be rerouted and used for this function Run a wire from 0301 Pin 7 the DPL deck to J601 Pin 10 wire for meter 1 may be in Pin 10 of J601 and possibly can be rerouted and used for this function Necessary for signal search mode only Remove the lead on the PL deck that comes from J601 Pin 1 PL on off from hang up box and solder it to Q406 base Solder the supplied 01 MFD RF decoupling capacitor between base and emitter of 0406 Connect JU401 to HD note there are two JU401s shown on the
44. are balanced differential configuration to minimize cross talk and hum The transmit audio output is in balanced transformer dc isolated configuration The outputs are 0 5 amp dry relay closures which are protected against burn out by 10 ohm or 2 7 ohm fusing resistors Page 17 27 25 OTX SWITCH SETTINGS Additional system programming is accomplished by 16 switches on the OTX processor board as follows SWITCH 581 Section 1 5 1 Section 2 SW Section 3 5841 Section 581 Section 5 581 Section 6 541 Section 7 SWl Section 8 Auxiliary receiver channel monitor mode on audio VOX receive audio off logic level input Channel monitor source on main receiver off aux receiver Main receiver carrier indicator source on squelch logic level input off audio VOX receive audio Note when inthe off position receive audio is used as the source for carrier indication i e the MRTI detects that the mobile is transmitting by the presence of receive audio RIMX logic level SW1 3 ON is recommended in all cases even when the Enhanced VOX Option is installed unless it is not possible to obtain an input from the receiver discriminator or a logic level input from the squelch detector in the receiver as in installations directly to a remote control console where the actual receiver is inaccessible Toll restriction on restrict off no restriction S
45. ground rods spaced several feet apart and bonded together with 6 or better wire If soil is sandy or rocky the local utility company can usually provide excellent advice if their engineering office is contacted relative to the local methods used to obtain a low resistance ground Many times these utility engineering departments will measure your site effective ground resistance with their specialized equipment if approached in the right way Remember the potential of lightning is what does the damage and the lower the ground resistance the lower the lightning potential Page 2 MITREK CONSOLETTE MRTI Signal Search Simplex Mode Interconnection between the MRTI and the base station can be made via the accessory terminal strips and TB2 on the rear of the chassis In most applications there are several spare terminals available for special interfacing in addition to the standard functions provided MRTI Signal Search Simplex Mode Install the following modifications additions to the base station utilizing spare screw terminals and TB2 1 RX Detected Audio Run a wire to DETECTED AUDIO available at solder strip TB4 5 6 2 P L Detect Run a wire to SQUELCH DISABLE on the MITREK transmitter receiver board Set up the P L detect circuit output for squelch operation JU1 JU2 out on the P L deck If the busy light kit is NOT present add a 5 6k 1 4w resistor from SQUELCH DISABLE to ground
46. increase auto dial pause length to 8 seconds Note Parameter 100 is also in the multi function and selective signalling options see sections D and H of this manual In such cases the control digit should be added with any other parameter 100 functions For example If selective signalling is installed and Parameter 100 has been loaded with a 4 land line priority when selective call digits are entered and it is also necessary that the auto dial pause length be increased to 8 seconds the resulting control digit to be installed in Parameter 100 would be 6 AUTO DIAL MEMORY Model ADLX pro Coe 4 0 AR BAR o 3456 890123 5 67 8 88888888888 888888888888888888 NOTE CIRCUIT BOARD IS SHOWN FROM COMPONENT SIDE 0503 1983 18 2 w 9 Els AO A A2 A4 5 6 A7 A9 DO DI 02 DZ 21711777 NOTES 1 ALL IC S ARE POWERED 8Y Vgg EXCEPT WHICH IS POWERED BY 5V SOURCE 2 MODEL ADLX HW i HAS 73 AUTOOIAL NUMBERS 2 ADLX HW 2 99 IC2 AND IC3 54 3 CAPACITOR VALUE MFD UNLESS STATED OTHER WISE gt 4 RESISTOR OHMS 5 4 INDICATE CONNEC TION TO Vgg Auto Dial Memory Model ADL X 05031983 HI R25 PAGE 0 5 Option E380 TDN6898 Selective Signalling of Mobiles in Tou
47. of digits in the multi digit access prefix The resultant number to be entered in Parameter 42 will be from 5 to 8 corresponding to 1 to 4 digits respectively in the multi digit access prefix Parameter 43 46 Multi digit access prefix the processor ignores unused parameters 47 Number of digits in the multi digit release suffix 48 51 Multi digit release suffix the processor ignores unused parameters Examples 1 If Parameter 42 3 43 1 44 2 45 3 47 2 48 4 and 49 5 then the MRTI would respond to system mobiles as follows 123 would be used to originate a call or answer a waiting land line caller 45 would be used to release the telephone line 2 If Parameter 42 7 43 1 44 2 and 45 3 then the MRTI would respond to system mobiles as follows 123 would be used to originate a call 123 could be used to answer a waiting land line caller or could be used to answer a waiting land line caller in response to ring signalling from the MRTI Note that if ring signalling had not been sent or the processor determined that the land line party was no longer waiting the MRTI will not respond to a IV Adjustable Signal Search Frequency and Duration Times Description The standard signal search frequency is 2 per second or every 1 2 second The standard signal search duration is 20 mnilliseconds If these times are not adequate slower transmitter relays etc they may be adjusted to suit the individual
48. or disabled for carrier squelch or audio VOX applications If a logic level input is required for receiver carrier indication switches can select either polarity and a threshold control adjusted to respond to small or asymmetrical swing signals Indicator LEDs are included to monitor input and output logic states considerably simplifying installation and subsequent trouble shooting SW5 compensates for high level low level audio sources discriminator quadrature detector etc and SW6 selects flat response from audio output circuits or 6 db octave rolloff taken from radio detector The internal squelch control is set for 10 20 db of quieting when used OTX System Processor Board The OTX control board can be broken down into functional blocks as follows 1 Digitally controlled audio gain stage consisting of ICs 36 35 34 and 33 The processor can select the gain stage input via IC36 and route the gain stage output to various locations via IC33 Processor control of IC34 controls the gain of the function block IC35A and IC35B comprise a high pass filter to eliminate hum pl etc IC35 converts the CMOS ladder network in IC35 to a variable gain function 2 Tone Generator 1 and 2 The programmable timer module produces square waves at the required frequency under firmware control These square waves are converted to triangle waves by transconductance amp IC22 Ground reference is guaranteed by inverters F a
49. possibilities Referring to Level setting in this manual ensure that the proper speaker level is being sent to the MRTI while receiving a system mobile or equivalent Measure Pin 8 of IC6 on the RIMX board with an AC voltmeter while receiving a system mobile This level should be between 45 VRMS and 1 4 VRMS processor autoleveling will compensate over this range correct as applicable Activate Test 3 With a system mobile or equivalent transmit Touch Codes to the Does the LED display indicate the digits being sent by the mobile Yes No possibilities 1 Carefully check system mobile deviation set max IDC to approximately 4 8 khz with overdrive signal and set Touch Code encoder digit 5 to 3 khz with no PL DPL Check mobile twist with encoders that can send single tones proceed as follows disable mobile TX PL Transmit 697 1 amp 2 buttons both down Deviation should be about 1 khz Now transmit 1477 3 6 6 buttons both down Deviation should be about 2 2 khz 6 db octave TX pre emphasis 1477 697 times 1 khz JP should deviate about 3 5 khz 1 should deviate about 2 7 khz Check for presence of Touch Codes at Pin 14 of 104 on RIMX board Note testing for presence of touch codes on the touch tone decoder can be very deceiving since the decoder is time share driven by the processor With this in mind examining Pin 9 of IC20 with an oscilloscope will show bursts of Tou
50. subfleet buttons and may effectively press any button remotely from your mobile by entering the Touch Code commands as described in the table at the bottom of this page Control is returned to the base station buttons only after you enter either N or patch disconnect command Functional Description The E383 TDN6901 option provides mobile selection of up to four 4 trunked control station fleet subfleet selections via 1 of 4 unique format Relays on the ORCTX 3 board simulate the base station front panel sub fleet switching only and do not alter the code plug options within the trunking micro computer system The ORCTX 3 takes control of the base station sub fleet selection upon entry of a N command n 3 9 and reverts control back to the front panel switches when the disconnect signal is received from the mobile The revert function also occurs when the N command is received from the mobile allowing the revert function to occur without dropping the telephone line party The command functions are 3 sub fleet A i B 5 n C 6 D 7 to 9 all switch lines open xN returns control to switches where n 3 9 j returns control to switches and disconnects telephone party Installation The ORCTX 3 module plugs into P9 on the OTX board P9 is repeated on the ORCTX 3 board to allow access to the P9 functions by other options The fleet subfleet control cable connecting to P122 on the ORCTX 3 b
51. the to respond to DTMF bursts as low as 50ms from the land line port during entry of selective signalling digits Installation The parameter modification routine as described under Option E155 TDN6908 in this manual is used to install the control digit Note Parameter 100 is also used with two other functions They are 1 Alteration of auto dial pause length see Section G of this manual 2 Control of External Devices using the Security Code Refer to Section D VII Whenever control of the monitor relay with the security code is needed in addition to any of the other two functions the control parameter digit entered for each function should be added together and the resultant digit is entered in Parameter 100 as the control digit IX Parameter 100 Add 0 No control of external function with the monitor relay when the security code flag is set Normal 1 25 second pause length refer to Auto Dial Option Section G No land line priority when selective call digits are being entered Add 1 Operate monitor relay when security code flag is set Add 2 Increase Auto Dial pause length to 8 seconds refer to Section G Add 4 Land line priority when entering selective call digits currently available only on Model 11159 contact enginnering for specifics refer to Section H The resultant of the preceding operations is the Parameter 100 control digit and will be from 0 to 7 Variable Length Touch
52. will set the security code received flag which will remain up until the MRTI is next disconnected The security code may also be entered after the MRTI accesses the telephone line Installation The security code is entered into the NVRAM using the procedure detailed under Option 155 0 6908 parameter modification procedure The following defines the applicable locations Parameter Function 22 Number of digits in security code 0 6 23 28 The security code Multi Digit Mobile Access and or Release Description Multi digit access and or release codes are useful primarily in systems where more than can be simultaneously accessed by a mobile Also multi digit access and release can help prevent non system mobile access to the note that the security executive override code described elsewhere is used primarily to override restrictions placed on system users and land line callers Installation The parameter modification procedure as described under Option E155 TDN6908 Non Volatile RAM in this manual is used to install the applicable parameters Parameter 42 Number of digits in the multi digit access prefix This number may be from 1 to 4 0 disables the multi digit access prefix Note it may be desirable to allow sent by a mobile to bypass the multi digit access prefix if a land line call is waiting ring signalling heard by mobile If this function is desired add 4 to the umber
53. 0 00 100PF CERAMIC C37 3306 02700 00 270PF CERAMIC C15 3306 01001 00 001MF CERAMIC C27 33 34 35 3306 26110 00 005MF POLYSTYRENE C25 30 31 3306 01002 00 01MF CERAMIC C1 2 5 6 8 3306 04702 00 047MF CERAMIC C3 4 7 9 3306 01003 00 1MF CERAMIC C20 21 3306 01003 00 1MF CERAMIC C36 44 50 52 3306 01003 00 1MF CERAMIC C14 3306 01003 00 1MF CERAMIC C23 24 28 32 39 40 3306 41004 00 1MF 35V TANTALUM C42 3306 44704 00 4 7MF 20V TANTALUM C26 41 3306 41505 00 15MF 20V TANTALUM MISCELLANEOUS Q2 3 4 5 6 3309 44010 00 NPN TRANSISTOR J1 3311 20012 00 12 CIRCUIT BOARD CONNECTOR J2 3311 20007 00 7 CIRCUIT BOARD CONNECTOR 180383 PAGE B 4 Option E376 TDN6894 Full Duplex Module Model FDMX Installation Remove power and remove top cover Push the FDMX board Jl onto the OTX Pl until the connectors lock together Install the Peel and Stick rubber bumper on the inside front panel to align with the blank space over the Jl connector Power up the MRTI and check for proper operation Circuit Description Audio from the switched network is input to the FDMX via pin 2 of Jl This audio is buffered and sent to the compression circuit and the electronic balance circuit through summing amp IC4A The other input to the balance circuit is the audio from the MRTI driving the switched network This audio is phase shifted about 90 degrees by C14 and fed to comparator IC2A When the amplitude from the MRTI is adequate IC2A gates audio from summing amp ICAA in a s
54. 01501 10 1 5K 1 4W 5 R255 256 3303 02201 10 2 2K 1 4W 5 R237 3303 02701 10 2 7K 1 40 5 R26 3303 03301 10 3 3K 1 4W 5 R1 49 135 136 137 257 3303 04701 10 4 7K 1 4W 5 R138 139 140 172 3303 04701 10 4 7K 1 4W 5 R242 243 3303 04701 10 4 7K 1 4W 5 R228 3303 05601 10 5 6K 1 4W 5 R108 111 3303 07501 10 7 5K 1 4W 5 R3 4 5 6 23 24 25 27 3303 01002 10 10K 1 4W 5 R28 29 30 31 32 33 34 3303 01002 10 10K 1 4W 5 R35 36 37 38 39 40 41 3303 01002 10 10K 1 4W 5 R42 43 44 45 46 3303 01002 10 10K 1 4W 5 R51 54 55 57 59 60 61 3303 01002 10 10K 1 4W 5 R63 66 67 69 98 115 3303 01002 10 10K 1 4W 5X R119 120 121 122 123 3303 01002 10 10K 1 4W 5 R124 125 126 127 128 3303 01002 10 10K 1 4W 5 072784 PAGE 50 IAI PARTS LIST OTX C SYSTEMS PROCESSOR BOARD REFERENCE SYMBOL R129 130 131 132 133 R134 143 147 181 R182 183 R234 R303 252 R227 R114 116 117 145 R146 148 149 186 R304 306 R52 56 65 68 R142 144 188 199 R200 201 202 204 205 R209 229 230 R244 R206 R196 R22 203 249 R73 83 R72 82 194 197 R71 74 75 81 84 85 R106 112 R7 8 9 10 11 12 13 14 R15 171 233 235 47 R62 76 80 86 R77 87 R17 R78 88 R16 R53 58 79 89 R18 R210 R198 R217 R95 R20 184 207 213 215 R216 231 245 R239 R94 R19 232 R93 R92 118 150 247 R238 R109 110 R96 97 219 221 223 225 R208 072784 IAI PART NUMBER RESISTORS 3303 01002 10 3303 01002 10 3303 01002 10 3303 01002 10 33
55. 03 01002 10 3303 01202 10 3303 01502 10 3303 01502 10 3303 01502 10 3303 02202 10 3303 02702 10 3303 02702 10 3303 02702 10 3303 02702 10 3303 03302 10 3303 03902 10 3303 04702 10 3303 05602 10 3303 06802 10 3303 08202 10 3303 08202 10 3303 01003 10 3303 01003 10 3303 01203 10 3303 01503 10 3303 01803 10 3303 02203 10 3303 04703 10 3303 05603 10 3303 03303 10 3303 01004 10 3304 01821 10 3304 04991 10 3304 06811 10 3304 01002 10 3304 01002 10 3304 01212 10 3304 01502 10 3304 01822 10 3304 02212 10 3304 02942 10 3304 03322 10 3304 03922 10 3304 04992 10 3304 04752 10 51 DESCRIPTION 10K 1 4 5 10K 1 40 5 10K 1 4W 5 10K 1 4W 5 10K 1 4W 5 12K 1 44 5 15K 1 4W 5 15K 1 4W 5 15K 1 4W 5 22K 1 4W 5 27K 1 4W 5 27K 1 4W 5 27K 1 4W 5 27K 1 4W 5 33K 1 4W 5 39K 1 4W 5 47K 1 4W 5 56K 1 4W 5 68K 1 4W 5 82K 1 4W 5 82K 1 4W 5 100K 1 4 5 100K 1 4W 5 120K 1 4W 5 150K 1 40 5 180K 1 4W 5 220K 1 4W 5 470K 1 4W 5 560K 1 4 5 330K 1 4W 5 1 1 40 5 1 82K 1 4W 1 4 99K 1 4W 1 6 81K 1 4 1 10 0K 1 74W 1 10 0K 1 4 1 12 1K 1 4W 1 15 0K 1 74W 1 18 2K 1 74W 1 22 1K 1 74W 1 29 4K 1 4W 1 33 2K 1 4 1 39 2K 1 4W 1 49 9K 1 4 1 47 5K 1 4 1 IAI PARTS LIST SYSTEMS PROCESSOR BOARD REFERENCE SYMBOL R107 113 R177 R173 R90 91 176 218 R220 222 224 226 246 R248 R180 250 251 R178 179 R174 175 R
56. 05 LDINNODYSIN yo120n0NO2 130W g Z NINO 1WNDIS 403 oT13A 39mN YO caf oj int wj 619 499d 7 88117 1090 094 NOLLYLS 1OWINOI avxvw Y 031883 YIWAYOISNVYL TIYM P MAXAR 80 Bases characterized by 2 large power pins in the cable connector pins A and B Install the following modifications additions to the base station utilizing the supplied female connector pins where necessary i 1 RX Detector Audio Run a wire from U10 Pin 6 to J601 6 wire for meter 2 may be in Pin 13 of J601 and possibly could be rerouted and used for this function 2 TX PL Disable Run a wire from the PL DPL code disable Pin CD TD the PL DPL deck to J601 3 3 PL Detect Locate and remove the soldered in 10401 and tone tone PL reed type PL reed type install a 100k 1 4w resistor in TRN6177C and its place Note there are two 104015 shown on similar the board pictorial The correct one for this function is the one in series between U401 Pin 13 and 0409 base This resistor allows Pin 13 of U401 to swing between detectable logic levels Remove C428 and replace it with a 1 MFD capacitor observing polarity Run a wire from U401 Pin 13 to J601 Pin 4 EE E tone PL reedless Run a wire from U401 Pin 28 on the PL deck to type TRN6207A type J601 Pin 4 and similar digital PL Run a wire from 0301 Pin
57. 115 ORCTX 2 REMOTE CONTROL MODULE BINARY FORMAT REFERENCE IAI SYMBOL PART NUMBER DESCRIPTION 22 8 8 2112 INTERGRATED CIRCUITS C O e m IILI a 3301 10037 00 HEX BUFFER IC3 3301 10017 00 HEX INVERTER 1 amp 3301 10015 00 TRIPLE 3 INPUT GATE IC5 3301 10026 00 MULTIPLEXER IC6 3301 10028 00 HEX SCHMILT INVERTER IC7 3301 10011 00 FULL ADDER IC8 3301 10045 00 QUAD LATCH gt SRE SS BORG Fs EMEND NUR ZRP R9 3303 02702 10 27K 1 4W 5 R14 15 16 29 3303 02701 10 2 7K 1 4W 5 R3 4 5 6 7 8 25 26 3303 01002 10 10K 1 4W 5 R27 28 3303 01002 10 10K 1 4W 5 R17 18 19 20 21 22 3303 01003 10 100K 1 4W 5 R23 24 3303 01003 10 100K 1 4 5 AM UE ec F CAPACITORS LED 1 2 3 4 3306 00750 00 LIGHT EMITTING DIODE C4 3306 01000 00 100PF CERAMIC c3 5 3306 01003 00 1MF CERAMIC RR Z CONNECTORS P122 3311 10010 00 10 CIRCUIT HEADER 3311 10025 00 25 CIRCUIT HEADER J9 3311 20025 00 25 CIRCUIT BOARD CONNECTOR Pa TES e kt lt MN MISCELLANEOUS D1 2 3 4 3302 20008 00 SILICON DIODE K1 2 3 4 3310 00191 00 REED RELAY 180382 PAGE L 6A PARTS LIST ORCTX 3 1 OF FORMAT REFERENCE SYMBOL PARTS NUMBER DESCRIPTION INTERGRATED CIRCUITS IC1 3301 10037 00
58. 212 R214 DISPLAY LED1 C28 C33 34 C9 35 36 C23 24 25 26 30 71 C21 22 37 38 39 40 C41 42 C2 3 7 15 77 C29 31 32 46 48 50 C4 5 6 8 11 12 13 C14 16 17 20 27 43 44 C47 49 51 52 54 72 73 74 1 75 76 C77 IC1 20 SOCKET IC2 SOCKET IC6 9 SOCKETS IC10 SOCKET P1 P2 P3A P3B OPT P4 9 OPT J5 OPT P6 J7 P8 OPT J10 MLC IC6 8 9 SOCKET 072784 IAI PART NUMBER RESISTORS 3304 05622 10 3304 06812 10 3304 07502 10 3304 01003 10 3304 01003 10 3304 01003 10 3304 01213 10 3304 01503 10 3304 02003 10 3304 02943 10 3304 01004 10 CAPACITORS 3306 00740 00 3306 00750 00 3306 00220 00 3306 01000 00 3306 02700 00 3306 01001 00 3306 26110 00 3306 26110 00 3306 01002 00 3306 01002 00 3306 01003 00 3306 01003 00 3306 01003 00 3306 01003 00 3306 41004 00 4606 01002 20 CONNECTORS 3311 30018 00 3311 30016 00 3311 30024 00 3311 30040 00 3311 10010 00 3311 10007 00 3311 10015 00 3311 10025 00 3311 20025 00 3311 10020 00 3311 20007 00 3311 10011 00 3311 60000 00 3311 30028 00 52 5 6 7 7 SEGM LIGHT 22PF 100PF 270PF 001MF 005MF 005 O1MF O1MF IMF 1 IMF 1MF 1MF 01 DESCRIPTION 6 2K 8 1K 5 0 100K 100K 100K 121K 1 4W 1 1 4W 1 1 4 1 1 4W 1 1 4W 1 1 4 1 1 4Ww 1 150K 1 4W 1 200K 1 4W 1 294K 1 4W 1 IM 1 4 1 ENT LED DISPLAY EMITTING DIODE CERAMIC CERAMIC CERAMIC CERAMIC POLYSTYRENE POLYSTYRENE CERAMIC CERA
59. 3303 03301 10 3303 03301 10 3303 03901 10 3303 04701 10 3303 05601 10 3303 06801 10 3303 01002 10 3303 01002 10 3303 01002 10 3303 01002 10 3303 08201 10 PAGE 45 1 1 4W 5 2 7 1 4W 5 10 1 4W 5 22 1 4W 5 27 1 4W 5 47 1 4W 5 100 1 4W 5 220 1 4W 5 390 1 4W 5 470 1 4W 5 470 1 4W 5 820 2 4W 5 1K 1 4W 5 1 2K 1 4W 5 1 5K 1 4W 5 1 8K 1 4W 5 2 2K 1 4W 5 3 3K 1 4W 5 3 3K 1 4W 5 3 9K 1 4W 5 4 7K 1 4W 5 5 6K 1 4W 5 6 8K 1 4W 5 10K 1 4W 5 10K 1 4W 5X 10K 1 4W 5 10K 1 4W 5 8 2K 1 4W 5 IAI PARTS LIST RIMX B RADIO INTERFACE MODULE 073184 PAGE 46 REFERENCE IAI SYMBOL PART NUMBER DESCRIPTION RESISTORS R139 3303 01502 10 15K 1 4W 5 R41 111 105 3303 02202 10 22K 1 4W 5X R48 3303 02702 10 27K 1 4W 5X R90 106 3303 03302 10 33K 1 4W 5X R92 3303 03902 10 39K 1 4W 5 R4 89 134 3303 04702 10 47K 1 4W 5 R71 97 3303 05602 10 56K 1 4W 5X R73 96 3303 06802 10 68K 1 4W 5 R135 3303 08202 10 82K 1 4W 5X R5 6 7 8 17 18 19 3303 01003 10 100K 1 40 5 20 21 22 23 24 25 3303 01003 10 100K 1 4 5X 26 27 28 29 30 31 3303 01003 10 100K 1 4W 5 32 100 104 3303 01003 10 100K 1 4W 5 R62 3303 02203 10 220K 1 4W 5 R42 44 3303 01004 10 IM 1 4W 5 R127 3303 00820 20 82 1 2W 5 R123 3303 05600 20 560 1 2W 5 R83 3303 00016 40 16 2W 5 R122 3303 01800 40 180 2W 5 R85 86 87 88 3304 02211 10 2 21K 1 4W 1 R137 3304 02941 10 2 94 1 4W 1 R136 145 3304 01002 10 10 1 4
60. 840 olanv Xy Any 3 0N X XY XAY Ganon A4OLINOW hay ta xny w 71 gt 14 14405 LON T 491049 HIV O INIT 1 1 azmddns stew awinaow 6 7490 AMIE 214 21425 PSN 319 D 20 Ta X ZZ wz _________ a wWIw7g 9 41 w9112x3 6 IN Id did Wdy FLIHM 9045 SISSWHI w Awad 75 12 2 2 907 17 9 12319 4 1630032 NO J18MVTIVNY 12 L23NNO w31N KAVITIXNY X 99 7995 AOJDNANODAW x NYL 1310 9 905 lt 3359 88117 SISSVH gt 941N02 VLBLINOL EIL w3lvddaW 92 KODY EpL NEW AMETE YAWYOASNYYL TIvM 21 031883 FLEXAR RPTR Install the following modifications aaditions to the Flexar repeater utilizing the supplied connector pins Female pins are used on J801 any future service 1 RX Detector Audio Run a gray wire from J801 metering socket Pin 15 to P901 receiver chassis plug Pin 1 o another gray wire from J901 Pin female pin the receiver chassis to a gt 6 Vh detector audio put 2 PL Detect gt Sea a omer wire roh 1801 Pin 9 position to P901 E Pin 2 male pin tone PL reed type Run another black wir
61. B4 11 16 100 PF gt 620 10K YO pf P85 10 3 PAG J7 an R206 SNS IN RIIG TONE1 218 120 245 034 R2I2 u 1 P82 Ima 5 lt S R22 To 0385 R203 A SN ATX 3I I2TONEI 15K Rta 78 15 29 4K 294K GEI EZ TO ERN R249 47 5 47K TX dos EST esr 32 12 u 2 Kise 14 100K par gt I4 INHIBIT ac gt PL 015 88 5 Koen 74 R246 SERE 4290 16 aux 7 Y 7 I l t gt Sl Ress Rec pope LGC GND 2 5 81 6 7 4 37 9 10 57612432 7 rKoerz 10 R224 8222 8220 28218 P1 P2 13 77 49 9k 49 9K 49 9K 49 9K es eno TELEPHONE RESI 22 R225 R223 R22 8219 aiio RK AUDIO LINE OPERATION MODE MODULE 22 100K rf 2 RA ENHANCED VOX FULL DUPLEX ETC R244 I 6 tS 1 i ox AUDO GROUND 9 s I CHASSIS TONE GENI en ST nasan PIA1 CBT 8139 PIAL 280 11 SNS IN 8159 9 CHASSIS 2095 PIAS P82 PB GAIN AO PAS TN 19 E B R79 P82 S CONTROL PAs TT DEC 8 R5 7 29 4K a u R are R92 0 5 s Pel PB3 8 18 DB WITH 80 IN PAS A IN 5 P8 E 81405 11 R77c20 2005 PBO P84 TXS IN A 585 U 4 5 22 1K 15 w 85 OUT oPre 586 Res R9 3 ax 4 te 1 5 876 7 w P86 E
62. CE IAI SYMBOL PARTS NUMBER DESCRIPTION INTERGRATED CIRCUITS IC1 4 3301 10029 00 QUAD OPERATIONAL AMPLIFIER IC2 6 3301 10006 00 QUAD FET INPUT OPERATIONAL AMP IC3 3301 10013 00 QUAD ANALOG GATE Ics 3301 10005 00 TRANSCONDUCTANCE AMPLIFIER RESISTORS R36 3303 01000 10 100 1 4 5 R1 5 3303 03300 10 330 1 4W 5 R27 28 3303 04700 10 470 1 4W 5X R42 3303 06800 10 680 1 4W 5 R24 43 3303 01001 10 1K 1 4 5 R26 47 3303 01201 10 1 2K 1 4W 5 R23 46 3303 04701 10 4 7K 1 4 5 R25 3303 08201 10 8 2K 1 4W 5 R22 3303 01002 10 10K 1 4W 5 R32 33 34 37 39 40 3303 01002 10 10K 1 4W 5 R44 45 3303 01002 10 10K 1 4W 5 R15 19 3303 01202 10 12K 1 4W 5 R35 41 3303 01502 10 15K 1 4W 5 R16 17 18 20 29 3303 02202 10 22K 1 4W 5 R3 6 3303 02702 10 27K 1 4W 5 R70 3303 03302 10 33K 1 4W 5 R31 48 3303 04702 10 47K 1 4W 5 R21 30 3303 01004 10 1M 1 4W 5 R12 13 3304 04752 10 47 5K 1 40 1 R11 3304 06812 10 68 1K 1 4W 1 R7 3304 08252 10 82 5K 1 4W 1 R8 9 10 3304 01003 10 100K 1 4W 1 R14 3304 01213 10 121K 1 4w 1 CAPACITORS c8 3306 00220 00 22PF CERAMIC C15 3306 01000 00 100PF CERAMIC C11 3306 02700 00 270PF CERAMIC C3 4 5 6 3306 26110 00 005MF POLYSTYRENE C10 21 3306 01002 00 010 CERAMIC C1 2 13 14 20 3306 01003 00 1 CERAMIC 12 3306 41004 00 1MF 35V TANTALUM c9 3306 44704 00 4 7MF 20V TANTALUM MISCELLANEOUS D1 2 3 4 3302 20008 00 SILICON DIODE Q1 3309 44030 00 PNP TRANSISTOR 91 3311 20012 00 12 CIRC
63. E 103183 ACCESS PWR SPL RETURN 9 15V IN OFF HOOK RING DETECT VRI IAT RLM 3 L3 El 3 E 2 100K IOOK 499K 470K clo R29 IOOK AA R3I RIS 9 7 aA ate ar 2 8444 4 7 120K RI8 C7 RI4 Reference 8 _source 12 R25 R23 NOTES 280 mos I2K Arrows up go to B R26 Arrows down go to reference 6 8K IM R22 3 Capacitors are in mlcrofarads 12K resistors are in ohms unless noted N 4 o Indicates screw terminal 42584 PAGE 41 RLM 3 LINE INTERFACE MODULE REFERENCE IAI f SYMBOL PART NUMBER DESCRIPTION INTERGRATED CIRCUITS 3301 10055 00 QUAD OPERATIONAL AMPLIFIER 3301 10006 00 QUAD FET INPUT OPERATIONAL AMPLIFIER Z1 3301 10044 00 PROGRAMMABLE ZENER DIODE DIODES D4 D5 3302 20008 00 SILICON DIODE D2 D3 3302 20003 00 4 7 VOLT ZENER DIODE D6 3302 20005 00 18 VOLT ZENER DIODE D1 3302 20001 00 SILICON DIODE D7 3302 20014 00 ZENER RESISTORS R35 3303 03300 10 330 1 4W 5 R11 3303 06800 10 680 1 4W 5X R12 3303 01001 10 1 4 5 R21 3303 01201 10 1 2K 1 4W 5 R9 3303 01801 10 1 8K 1 4W 5 R7 3303 02201 10 2 2K 1 4W 5 R3 25 3303 03301 10 3 3K 1 4W 5 R26 R27 3303 06801 10 6 8K 1 4W 5 R20 33 3303 01002 10 10K 1 4W 5 R22 R23 3303 01202 10 12K 1 4W 5 R8 3303 01502 10 15K 1 4 5 R1 3303 02202 10 22K 1 4 5 R34 3303 03902 10 39K 1 4W 5 R13 3303 04702 10 47K 1 4W 5 R2 4 5 6 15 16 3303 01003 10 100K 1 4 5 R17 18 28 29 30 36 3303
64. EM ANNUNCIATOR REFERENCE IAI SYMBOL PARTS NUMBER DESCRIPTION RESISTORS R1 3303 01001 10 1 4W 5 R3 3303 00470 10 470 OHM 1 4W 5 R2 7 9 11 3303 01002 10 10K 1 4W 5 R6 3303 04702 10 47K 1 4W 5 CAPACITORS C1 3306 01002 00 01 CERAMIC LED 1 3306 00750 00 LIGHT EMITTING DIODE 2 3306 41004 00 1MF CERAMIC TRANSISTORS Q1 2 3309 44010 00 NPN TRANSISTOR CONNECTORS J9 3311 20025 00 25 CIRCUIT BOARD CONNECTOR P151 3311 10004 00 4 CIRCUIT HEADER P159 3311 10006 00 6 CIRCUIT HEADER 151 3311 40004 10 4 POSITION CONNECTOR 159 3311 40006 00 6 POSITION CONNECTOR MISCELLANEOUS Ic 1 3301 10012 00 DUAL D FLIP FLOP 01 3302 20001 00 SILTCON DIODE L1 2 3307 00010 30 PROTECTION CHOKE K1 3310 00215 00 RELAY S1 2 3312 20000 10 SURGE SUPPRESSOR 062383 PAGE M 3 INSTALLATION MANUAL FOR MICPROCESSOR RADIO TELEPHONE INTERCONNECT 11158 and 11159 This manual contains installation information for the following Radio Equipment Mitrek Consolette and Moxy 80 1 Repeater ME Flexar Repeater T1600 Series Remote MSR 2000 Series Base MSF 5000 Series Base INSTRUMENT ASSOCIATES INC CONTENTS Page Mitrek Consolette Signal Search Simplex 3 Enhanced VOX Simplex 9 and re UTI m 8 Maxar 80
65. G OPTION revertive mobile to mobile call where N is mobile paging code in 1 2 3 or 4 digit format Page 27 ao Sw OFF Sw 32 Sw 3 Sw 4 OFF STX Sw OFF on 3 OFF 4 OFF J OW e OW 7 amp o Swa low GO 4 gt d c rip J 6 d c amp e BE 09 2 02 cQ cO 0 eo 97 lt TL a d S i E g E3 SIE c 2 0 0 9 0 o m ln i i cr x VET 9 c a x 0 IRQS 2000090000 gt gt 4 fo lo Pe we 401908 e Hops 7 Q of 9 a ATOS Sudy Coda Nemba do ILG 4 Codo Agelo A M O Mes As lad ZM O NE Mo led o Ma 3 a oat AV Deities id 5 5 O D gt E Dusken 15aloomS 5 d ta SmS F Q sheen De dj Pu dia Raby 644 56 59 l GO 0 a nomb Mada Au zka 3 454 5 6 64 345 G5 AF nome awm 5 GZ gt A Mte 23 7 7 2 aed 7 q mena Da ou Wel E
66. HEX BUFFER IC3 3301 10017 00 HEX INVERTER 164 3301 10015 00 TRIPLE 3 INPUT NAND GATE IC5 3301 10026 00 MULTIPLEXER IC6 3301 10028 00 HEX SCHMITT INVERTER IC9 3301 10023 00 8 BIT LATCH RESISTORS R14 15 16 29 3303 02701 10 2 7K 1 4W 5 R2 3 4 5 6 7 8 25 26 3303 01002 10 10K 1 4W 5 R27 28 3303 01002 10 10K 1 4W 5 R1 9 3303 02702 10 27K 1 4W 5 R17 18 19 20 21 22 3303 01003 10 100K 1 4W 5 R23 24 3303 01003 10 100K 1 4W 5 CAPACITORS LED 1 2 3 4 3306 00750 00 LIGHT EMITTING DIODE C2 4 6 3306 01000 00 100PF CERAMIC c3 5 3306 01003 00 1 CERAMIC C1 3306 41004 00 1MF 35V TANTALUM CONNECTORS P122 3311 10010 00 10 CIRCUIT HEADER P9A 3311 10025 00 25 CIRCUIT HEADER J9 3311 20025 00 25 CIRCUIT BOARD CONNECTOR MISCELLANEOUS D1 2 3 4 3302 20008 00 SILICON DIODE K1 2 3 4 3310 00191 00 REED RELAY 180383 PAGE 1 68 Option 384 TDN6902 Key Telephone System In use Annunciator Module Model KSAX Description The KSAX key system annunciator module provides line busy indication for certain standard key telephone systems A relay closure via the standard USOC RJ12C telephone interconnect lights up the button associated with the phone patch telephone line This gives the users of accompanying telephone sets the indications that the phone patch has accessed the telephone line Installation The KSAX module plugs directly into J9 on the OTX board On systems with other J9 options the P159 cable plugs into the P9a extension plug on the
67. MIC CERAMIC CERAMIC CERAMIC CERAMIC TANTALUM POLYESTER 18 16 24 40 10 15 25 25 20 11 28 PIN IC SOCKET PIN IC SOCKET PIN IC SOCKET PIN IC SOCKET CIRCUIT HEADER CIRCUIT HEADER CIRCUIT HEADER CIRCUIT HEADER CIRCUIT BOARD CONNECTOR CIRCUIT HEADER CIRCUIT BOARD CONNECTOR CIRCUIT HEADER CIRCUIT MODULAR FEMALE CONNECTOR PIN IC SOCKET IAI PARTS LIST OTX C_ SYSTEMS PROCESSOR BOARD MISCELLANEOUS 2 3 4 5 3302 20008 00 SILICON DIODE Q 2 3 4 3309 44010 00 NPN TRANSISTOR X1 3312 00100 00 3 58MHZ CRYSTAL SW1 2 3312 01008 00 8 PST DIP SWITCH PUSH BUTTON TEST 3312 71000 00 SPST SWITCH GRAY PUSH BUTTON RESET 3312 72000 00 SPST P B SWITCH RED Li 3307 00099 00 CHOKE BEAD 080184 PAGE 53 Option E155 TDN6908 Programmable Variables Memory Non Volatile RAM NVRAM Variables parameters modification procedure All MRTI options that use the NVRAM as parameter storage are enabled disabled and or programmed using the following parameter modification procedure 1 preferred method A standard Touch Code telephone equipped with a modular type plug inserted into J10 the test jack located in the lower right hand corner of the OTX processor board The MRTI should be viewed from the rear of the chassis Power for the telephone is supplied by the MRTI The installer should ascertain proper Touch Code operation of the phone by a simple listen test before proceeding 2 A mobile or p
68. Mobile carrier detect as mentioned above is necessary to switch the audio paths within the MRTI during telephone conversation The RIMX provides switch selectable carrier detect options The MRTI also examines the repeater receive private line decoder output via the P L Detect logic level input On carrier squelch only systems this input is switch disabled to provide a continuous P L detect condition Page 9 PTT output connects to repeater This PTT signal keys the repeater transmitter without disabling the repeater receiver audio circuits MRTI transmit audio output is also balanced to provide hum and noise immunity and connects to the repeater exciter audio input The output is virtually transparent to circuit impedances of 600 ohms or less allowing connection or disconnection of the MRTI without affecting normal repeater audio levels P L Stripping transmit P L disable a relay closure is provided This feature is on off controllable by a mobile command and may be switch programmed to operate on access Release always resets this function Monitor relay closure is provided to disable receiver P L prior to ring signalling in applications where receive audio vox is used to detect mobile activity as discussed previously monitor also operates during standard ring signalling to mobiles Auxiliary receiver logic level and audio vox input also provided for use in systems requiring a separate
69. RLM boards refer to System Self Tests section of this manual for details Monitor the radio transmitter for presence of the test 2 tones Monitor the telephone line for presence of the tones Is test 2 normal Yes No Reconnect Modular plug correct as applicable Determine the source of receiver audio in this system Normally speaker audio trunked control station applications and remote console interface applications only Most other installations use audio and detect carrier from the radio discriminator detector Does this system use discriminator detector audio as audio Source Yes No Go to Speaker Audio Procedure Does the carrier det LED on the lite when the receiver is receiving a 20db quieted signal Yes No Normally squelch is detected by the squelch circuits internally on the RIMX board Is squelch detected internally in this system Yes No Referring to RIMX schematic and input output specifications troubleshoot as applicable Page 35 audio RIMX With 3 Check Measure attached to the radio with a high impedance AC voltmeter or oscilloscope With no RJ signal into the receiver measuring squelch noise the meter should read about 45 VAC high level discriminator output or about 80 millivolts AC low level detector output Check the RIMX switch settings to ensure pr
70. S 224 S 2 vS S 6 S 268 57 98 S 08 S S S 26S S c89 V 39 6 27188 762 1 912 21899 172858 8 925 21647 9 929 9 8E 2 9 e 2 8 T 776 T TS8 77194 87169 21629 7295 07206 17189 17219 6126 g 07216 21448 899 97209 CES 8 68 9 199 866 6 8SE 9 EET O S6ET 9 LSET 231461 876821 971621 871121 438811 v STT S zcTT 9 S 27806 S SS8 21018 97194 87922 889 6 TS9 97419 87288 6 ESS 5 y 9 72S 8 96 G 02 27899 17229 87666 979826 97866 9 6EE 23125 7 236901 239801 6 9001 6 626 27656 O ETE 42906 S 96c S 88c 94601 4 15826 07628 67268 287884 87994 207 6 699 G YE9 67009 695 4 0 6ES S OIS G 8 671489 276659 87019 07686 S 89t 0 6 S O E I 039 6 8 2 9 t 4 0 dO V LAVH aNOL 38wnN SNOL V lHVH LAVH ADONZNOHAJ 9 SNOL SLAVH AON3nO3Hj OL 3000 SNI TIVNDIS 112371 6 ANOL OML ILYW PAGE H7 100983 Nat Option E381 TDN6899 Mobile Control of External Functions Module Model ORCTX 1 Operator Instructions The E381 TDN6899 remote control option allows up to seven 7 independent control functions on off controllable from the mobile The mobile operator may open and close gates or doors or turn lights on and off etc For instance entering 45 control command from your mobile or portable causes function 2 to turn Enter 4 and function 2 turns off table below describes the control function commands 3 function 1 turns
71. SWa 5 ow 44 my ma od a o O 84 Enola gt 0643 Moll o alosa add d Roka NJ LON E A SZ 51 ou Pedo ewa uken a 9 2 VA s mx IG Set VG See N panda ails O bis as Jiem 28 2 oad Oz M 3 mamisa Qe dug de Jom AREA Dae m 30 5 O KA _ aod Nolo bs loin odd 4 PL T4 aN ste O odd uec du oaa Oz lt Ku ovu ue add A poeta coba baci w ada 4 D Ns 33 4 1 O AA eo ia SA add ba NAK os d 4 mak 4 2 esha AN DTAE 9 Tue ios f rie 3 3 2 4o 4 O Cole Pen So dal O oo Od E O 5 FOG Gq O 7 T o K O L V1 2 amp C4u potz gt 01400416 Or Ot N Two ToN 4 18 publ 30 lt 3 NSD a beth 2 m alma AG Sos l EAEAN add 6 0 adQa 2 0 i 51 add 4 Gl CE trolly erat of Tone fe 2 a U X etu
72. Sos ssc Seer 23 Circuit Description Theory of Operation RLM 3 Registered Line Module 7 25 b RIMX Radio Interface Module 25 c OTX System Processor 4 lt 26 Block 29 Interconnect 30 f System Trouble Shooting Flow 31 Circuit Drawings a RLM 3 Board Layout tr t ss an 41 41 parts LIS a usss 42 b RIMX Board Layo sa a a n 43 Schenishi ces sss so SES E SE a 44 Parte Lig e E Em SIS 45 c OTX Board 48 5 49 Parts 50 9 Table of Contents continued PAGE Options included as applicable E155AB TDN6908 Programmable Variables Memory 1 25 Variables parameters modification procedure A 1 Installation A 3 B E375AA TDN6893 Enhanced Vox Module Me WN Installation B 1 Circuit Description B 1 Board Layout 05 B 2 Schematic
73. T present add 5 6k 1 4w resistor from SQUELCH DISABLE to ground 3 P L Stripping Run a wire to the CD code disable stake pin on the P L deck Now connect the MRTI P12 interconnect cable to TBl and TB2 as follows P12 Cable Color To Function brown designated spare TX P L stripping red TB2 4 ground green TB2 4 ground violet TB2 4 ground gray designated spare _ RX detected audio white TB2 5 f PTT black designated spare P L detect tan TB2 6 mike low pink TB2 7 mike high Earth Ground Run the supplied 12 or larger wire from the EARTH GROUND terminal on the to the base station chassis ground This wire must be as short as practical not coiled and fastened securely to the base station chassis If this is a control station in a repeater system that transmits PL DPL during transmit turn off delay it is necessary that the repeater be set for zero turn off delay See note 1 below RIMX Switch Settings Set the switches as follows SW1 on private line system off for carrier squelch SW2 off SW3 don t care SW4 off SW5 off SW6 off Page 6 TH lt cy TEAC ety OTX Switch Settings Set the OTX switches as follows SW1 SW1 SW2 All other switches are programmed as applicable to system requirements to the OTX Switch Settings section in the MRTI Instruction Manual Refer section 2 on section 3 on section 1 off then go to the Level Setting section Notes 1 Repeater tra
74. TI processor program is contained in read only memory ROMs and is field replaceable socketed as necessary Basic firmware is contained in one or more ROMs so marked and optional firmware autodial multi function utilities or selective signalling is contained in other ROM s also designated A 2 letter designation indicates the supplied firmware as follows BSC Basic MRTI firmware required for all functions UT Multifunction Utilities Option E377 TDN6895 AD Autodial 1 Option E378 TDN6896 SS Selective Signalling Option E380 TDN6893 Page 28 pt E 1 S3HOLIMS 3SN3S 114 ONI A yayaya M2078 AVTdSiQ 130 ILYW lt PIREN x NOW 134 eroi 35049 9121 2191 2121 9121 121 191 821 421 921 0121 743834 Ya oval NOI1dO NOIL dO 831 lt lvuvd NNO 9 vid Svid Vid I Vid A N v 2 I wou 2 WOJ L Sng 5532084 seal as 110 TERT Wid 2 o 8 2 21 9 21 34713 ved 2 SSVd MOT o
75. UIT BOARD CONNECTOR VR1 2 3312 41000 00 OPTO ISOLATOR 180383 PAGE C 3 The Option E377 TDN6895 Multi Function Utilities MRTI multi function utilities is a collection of firmware routines which in connection with the required E155 TDN6908 provide the following functions IV VIII Automatic station identifier Security executive override code maintenance Multidigit MRTI access and or release Adjustable signal search frequency and duration times Comprehensive toll restrictions Mobile signalling start Control of external devices using the security code Land line priority with selective signalling IX Variable length Touch Codes to land line X Emergency call direct access XI XII XIII Inhibiting pseudo Touch Code regeneration during mobile dialogue Special mobile signalling control A High frequency ringing to mobiles B Loud ring to mobiles C Multiple ringing to mobiles Variable mobile inactivity timer XIV Attendant connect control Land line caller connect control Land line message hailing timer Variable overall access timer Automatic Station Identifier Description Up to ten digits of any combination of letters and numbers can be field programmed using the parameter modification routine described under option E155 TDN6908 in this manual The identifier can be enabled or disabled set to identify every 15 or 30 minutes
76. W 1 R144 3304 09091 10 9 09K 1 4W 1 R110 3304 06812 10 68 1 1 4W 1X R74 3304 08252 10 82 5K 1 4W 1X R9 10 11 12 13 3304 01003 10 100K 1 4W 1 14 15 16 77 3304 01003 10 100K 1 4W 1 R109 3304 01213 10 121K 1 4W 1 R107 108 3304 01503 10 150K 1 4W 1X R50 52 54 56 3304 02003 10 200K 1 4W 1 75 76 3304 02003 10 200K 1 4W 1 POTS RSO1 3305 05001 00 5K R502 504 3305 05000 00 500 R503 3305 01004 00 100K 1 ZE i a ae UW Y DVYT CAPACITORS LED 1 2 3 4 5 6 7 8 9 3306 00750 00 LED C22 3306 00220 00 22 C16 19 41 8 3306 01000 00 100PF CERAMIC C37 3306 04710 00 470PF CERAMIC C12 13 18 21 5 6 3306 01001 10 001MF CERAMIC 28 36 40 47 3306 01001 10 001MF CERAMIC C23 24 27 44 3306 01002 00 1 CERAMIC C1 2 3 7 17 26 3306 01003 00 1 CERAMIC 29 35 38 39 42 45 3306 01003 00 1MF CERAMIG IAI PARTS LIST RIMX B RADIO INTERFACE MODULE REFERENCE SYMBOL 11 14 15 25 30 C9 10 C43 C31 C33 C48 C32 C34 IAI PART NUMBER CAPACITORS 3306 26110 00 3306 44704 00 3306 48204 00 3306 52206 10 3306 51007 00 3306 42707 00 3306 51007 10 3306 41505 00 DESCRIPTION OOSMF POLYSTYRENE 4 7MFD 20VDC 8 2MFD 35VDC 220MFD 16VDC 1000MFD 16VDC 2700MFD 30VDC 1000MFD 6 3VDC 15MFD 20VDC CONNECTORS P6 P12 P11 P13 3311 10020 00 3311 10012 00 3311 10004 00 3311 10003 10 20 CIRCUIT HEADER 12 CIRCUIT HEADER 4 CIRCUIT HEADER 3 CIRCUIT HEADER MISCELLANEOUS L1 L2 3 T1 Q1 4 Q2 Q3
77. ables this timer XVII Variable Overall Access Timer Description Adds extended timed call length to standard MRTI overall access timer of up to 9 minutes in systems that allow it Parameter 223 Overall access timer the number of minutes allowed for total access time This parameter is also used in conjunction with parameter 207 to provide special direct access timing restrictions as described below Range 1 9 1 minute to 9 minutes 0 disables this timer Timer Function Table OTX SW2 1 5 ff Message Alternate Hailing over all Functional Description timer timer 207 223 don t care don t care When SW2 5 on the OTX board 3 minute timer is off parameters 207 and 223 have no effect This removes any overall timing restriction but does allow mobile inactivity timing as determined by SW2 3 on the OTX board on 0 0 This setting also defeats the on on special timers but does provide the standard 3 minute overall timer 0 1 9 This setting overrides the 3 minute overall timer and provides 1 to 9 minutes of overall access time 1 9 0 This setting allows direct access calls only the amount of time set by parameter 207 5 to 45 seconds Non direct access calls will have 3 minutes of overall access time This setting can be used to configure the MRTI as a paging system where the direct access caller would have only 5 to 45 seconds to give a voice message before disconnect
78. al may be commanded back on in order to involve another mobile user in the telephone conversation Tx PL tone on 1 Tx PL tone off 1 Call origination from mobile users Yes or No Call origination from telephone line Yes or No Three minute overall access timer On or Off Emergency override of three minute access timer Yes or No Override code or security code if applicable refer to Section D Access elapsed time coded tones On or Off 1 minute one short beep 2 minutes two short beeps Also if the three minute timer is on as in 13 2 3 4 minutes one tick every 2 seconds until 3 minute release Release after 60 seconds of mobile inactivity Yes or No If mobile activity timer is on ticks are sent 15 seconds prior to disconnect Reception of a mobile signal will reset the mobile inactivity disconnect timer Page 5 1 pe Ran Associated with the standard features are Touch Code command signals utilizing the ff and 1 buttons on your encoder These should be entered in the manner outlined in the Operator Instruction Section stretching the first digit where applicable Some examples follows Access telephone line Redial last number dialed Overrides line busy After access override 3 minute overall timer Before access answer if called special application After access flash as applicable Transmitter PL tone on
79. as shown on the OTX board layout If the ADLX board is supplied Option E379 TDN6897 it may be necessary to install the supplied Header s at the p3 location on the OTX board Ensure that the locking Ramp is as shown on the OTX board layout and the key pin 27 is missing The Auto Dial control parameter in the NVRAM controls access on off etc The procedure to modify this parameter to change the option is described in the Parameter Modification Procedure G 3 PARAMETER 96 AUTO DIAL CONTROL DIGIT If disabled add 1 if enabled add 0 allows auto dialing even if mobile access is disabled If mobiles not allowed to enter delete auto dial numbers add 2 else add 0 If security code required to use auto dial add 4 Else add 0 For Example Parameter 96 0 Auto dial enabled mobiles can store auto dial numbers no security code required Parameter 96 6 Auto dial enabled mobiles cannot change auto dial numbers security code required prior to each use of auto dial utilities option E155 TDN6895 required to support security code Variable Auto Dial Pause Length Occasionally it is necessary to lengthen the normal pause between numbers being auto dialed when using some long distance services such as MCI SPRINT etc to allow for system response In such cases provision has been made to alter the pause length to 8 seconds Parameter Auto Dial Control Digit 100 Add O normal 1 25 sec auto dial pause length Add 2
80. asure the resistance between the white and green wires in the MRTI radio cable should be less than 15 ohms correct as applicable Does test 1 deviate the transmitter approximately 3 khz Yes No possibilities Check that J12 radio cable connector is properly connected to P12 on the board Check connection of pink transmit audio hi and tan transmit audio low wires to radio mike circuit Measure between the pink and tan wires with an AC meter Normally about 165 vac will deviate the transmitter about 3 khz this value is for in circuit measurements Since the MRTI transmit audio circuits are normally bridged across the radio mike circuit open circuit measurements will be much higher This level can be adjusted with the TX LVL pot R503 on the RIMX board correct as applicable Does the voltage across tip and ring of the telephone line on the RLM board drop from about 48 volts to less than 17 volts when test 1 is activated as indicated by the off hook LED on the RLM board coming on Yes No Page 33 Se possibilities 1 Defective phone line or phone line cable Reset patch to idle with reset button nothing in display and measure DC voltage tip to ring on the RLM board Should be about 48 volts and off hook LED should be out on hook 2 Check for proper inputs to LIM module on the RLM board B Pin 4 5 Pin3 ground Pin 1 Short tip and ring on RLM together Of
81. ath is enabled to from the telephone line 5 The MRTI can share a telephone line with a standard telephone set This can eliminate the need for a separate telephone line dedicated to the MRTI 6 MRTI telephone line busy signal When a mobile user attempts to access the telephone line and the line is off hook in use by a line sharing telephone set etc the MRTI will Page 4 return a busy signal to the mobile user The line may accessed in this condition by the busy override code There are many standard switch selectable features including 7 10 11 12 13 14 15 16 Ring signalling to mobiles initiated after first or fourth ring fourth ring feature allows an attendant to answer calls on a line sharing telephone set as discussed in 5 above before the mobiles are alerted Attendant control of MRTI Yes or No An attendant can initiate or forward calls to the mobile users via a touch code equipped line sharing telephone set dialing the attendant access code Toll long distance restriction Yes or No MRTI disconnects when 1 or 0 is entered as the first digit of the telephone number Transmitter private line signal disable On command only or automatic on access choose one In either case the on off commands are functional This feature allows use of the MRTI without disturbing other mobile users in the system In the latter condition the private line sign
82. ation P601 connector follows utilizing the supplied male connector pins as applicable Pin 601 Pin UJ UJ 09 00 Color Function red TX PL disable return green PTT return violet RX detector return tan TX audio return Twist the above listed leads together and solder to a short wire lead Then strip a small section the black power lead close to the connector Neatly solder the short lead from the returns to the stripped section of the black power lead 5 pink audio mic hi 6 gray RX detector audio 3 brown TX PL disable 4 black RX PL detect 8 white push to talk 1 orange reverse burst inhibit 2 yellow reverse burst inhibit return Note the orange and yellow leads reverse burst inhibit and return need be connected only in the signal search mode Earth Ground Run the supplied 12 black ground wire from the EARTH GROUND terminal to the base station chassis f This wire must be as short as practical not coiled and connected securely to the base station chassis WERKE Page 15 If this is a control station in a repeater system that transmits PL DPL during transmit turn off delay it is necessary that the repeater be set for zero turn off delay See note 2 below Connection complete RIMX Switch Settings Set the switches as follows 8841 on private line systems off for carrier squelch SW2 off SW3 don t care SW on tone reed off tone reedles
83. audio This method provides excellent audio fidelity which is non temperature sensitive The delayed audio is routed through processor controlled gate IC 17B to 411 7 is C34 RT pie cs csa RS R53 ec wet R 43 45 4T 5 52 Je D 1 20 K Tu 43 10 9 24554 NOTE CIRCUIT 15 SHOWN FROM COMPONENT SI0E lal 08061985 HIN fd RI3 84 RIS 1423 40 678 cs cz 2881 4 kj b m Mig 7177 2T 4T je 05 24 05 06 Rly R2 2 3 486 on HELO O a b ics b Ace be c5 R8 RIO oz R76 835 ic to icis 1 02 a 91 P s WE GEM 888 5 43 SYSTEM MODEL OSV X 5 45 5 RIG 31 8K Ol 7 ois e 13 LINZ s s gt e RIS 100 PF cis 100PF ce 5V LOGIC 42 6 LOGIC 2 5 5v 4 7K Ri14 Ji 4 SN8 lt 41 7 HOLO OFF SAMPLE VOX Rios deca 100K 1005 4 2 C34 C35 Res 4 8 lt 12 4 12 8 SYSTEM Model OSVX NOTES CAPACITOR VALUE IN MFO UNLESS STATED OTHERWISE 2 RESISTOR 7 OHMS 5 5 x 3 INOICATE CONNECTION 70 124
84. board pictorial The correct one for this function is the one that grounds the emitter of Q409 when connected to Pin HD Page 9 tone PL reedless Remove the lead on the PL deck that comes from type TRN4237A 3601 Pin 1 PL on off from hang up box and and similar solder it to U401 Pin 36 Remove the lead on the PL deck that comes from J601 Pin 2 hang up box ground and solder it to the junction of C414 and R408 on the PL deck Remove R421 on the PL deck between 0401 Pin 7 and Pin 26 Solder the supplied diode into the JU102 holes on the main circuit board close to squelch control with the cathode toward mic PTT digital PL Remove the lead on the PL deck that comes from TRN6207A and J601 Pin 1 on off from hang up box and solder similar it to Q312 base Connect JU302 to Pin D The monitor function is now via the front panel and or desk mike monitor switch Now connect the MRTI J12 radio cable to the base station P601 connector as follows utilizing the supplied male connector pins as applicable Pin 601 Pin Color Function 6 red TX PL disable return 6 green PTT return 6 violet RX detector return 6 tan TX audio return Twist the above listed leads together and solder to a short wire lead Then strip a small section on the black power lead close to the connector Neatly solder the short lead from the returns to the stripped section of the black power lead 5 pink TX audio mic hi 13 gray RX detector audio
85. c Carrier detect squelch adjustment d Receiver Audio Discriminator detector source no level setting necessary Check setting of SW5 and SW6 on RIMX Speaker audio source set volume control for 104 2 5 vac 5db 0 45 vac while receiving 1000 hz 4 khz deviation SW5 and SW6 on RIMX set accordingly Enter option parameter data where applicable refer to Options section of this manual Page 22 SYSTEM SELF TESTS The self contained tests are invoked and controlled by the test and reset buttons on the OTX processor board Each time the test button is depressed the next test is selected The test number is displayed for 1 second upon entry into test before the test is started This allows entry into any test without activating other tests Each time the test or reset buttons are depressed the test timer is reset If and when the test timer reaches 15 minutes the MRTI will revert to the normal idle condition ready to handle communications 1 Level Set Check to Transmitter and Switched Network Touch code j is generated and sent to the transmitter and switched network amplifiers at the reference level The transmitter is keyed and the SN is accessed This test is used to adjust and or check the level to the associated transmitter The transmitter is adjusted to 3 kc deviation in a 5 ke system If the switched network line is 600 ohms the level to the SN will be 10 dbm 1 5db The decimal point on the LED disp
86. ch Code or Two tone Sequential Operator Instructions The selective signalling feature may be operated by 1 A land line caller that has a Touch Code telephone or other means to generate Touch Code tones 2 An in plant caller that has a Touch Code phone or other means to generate Touch Code tones on the same telephone line as the MRTI Touch Code equipped mobile revertive signalling Parameter modification will determine which of these are allowed any all or none 1 Land line caller The caller dials the MRTI number The MRTI will answer lst or 4th ring as determined by SW2 Section 6 and acknowledge with a short beep The caller has 6 seconds to begin entering selective signalling numbers after hearing the first short beep tone When the proper number of digits are received prefaced by the security code if so programmed requires option E377 TDN6895A second acknowledge beep will be heard If the six seconds has expired and the proper number of digits have not been entered one of two things will occur depending on parameter programming Parameter32 a The caller will be disconnected or b The MRTI will send a simulated ring signal for any mobile to answer If the caller is not disconnected and ring signalling is sent the time allowed a mobile to respond before the MRTI disconnects from the telephone line is determined by Parameter 29 2 in plant caller attendant After a telephone conversation is es
87. ch Codes with steady Touch Code being received from the system mobile correct as applicable Page 37 Activate test 4 If the E375 TDN6893A Enhanced VOX Module or E376 TDN6894A Full Duplex Module is in place test 4 will route the telephone audio through the module audio circuits to the transmitter If E375 TDN6893A E376 TDN6894A is not present test 4 will route the telephone line audio through the variable gain stage to the transmitter Using a Touch Code telephone or other Touch Code source impress Touch Codes on the telephone line The LED indicator will show the decoded digits Note sustained high level tones greater than 10 DB on the phone line will cause the voice power limiting circuit on the RLM board to open the audio path to the MRTI until the audio is removed Voice or momentary bursts such as Touch Codes will not cause this switching to occur Does the show the decoded digits Yes No possibilities Measure between pins 6 ground and 7 of the RLM header P7 with an AC voltmeter while tones or audio are on the phone line Measure between linear ground loop on OTX board and Pin 7 of 104 with the AC voltmeter while tones or audio on the phone line correct as necessary Is the audio on the telephone line being transmitted to the system mobile or equivalent at a normal compressed or autoleveled amplitude delayed about 5 seconds if ption 2 i
88. ched Network to Transmitter Test This test tests SN autoleveling The transmitter is keyed the SN accessed and the audio path from the sn through the variable gain stage to the transmitter is established The Touch Code decoder is driven from the sn and displayed on the display SN VOX processor determined is indicated by the decimal point Page 23 Receiver to SN Signalling Test Tests audio paths from the receiver to the SN and Touch Code decoder The sn is accessed and the audio path from the receiver through the variable gain stage to the sn is enabled when not receiving telephone number signalling The Touch Code decoder is driven from the receiver and displayed on the display The decimal point is on when RX VOX processor determine is detected Auxiliary Receiver Tests Tests the audio and logic inputs from an auxiliary receiver The sn is accessed the audio path is established from the auxiliary receiver through the variable gain stage to the sn Multiline L1158A only The decimal point indicates auxiliary receiver logic low input if SW1 Section 1 is off or auxiliary receiver VOX if SWI Section 1 is on Also tests contacts of switches 1 and 2 of the OTX board With all switches A 1 should be displayed Afterward each switch may be exercised to test for proper operation observing that the displayed 1 extinguishes only when an individual switch is turned completely off Non accessed Switched Networ
89. current access Option E378 TDN6896A Auto Dial I 9 number storage and Option E379 TDN6897A Auto Dial II 99 number storage AUTO DIAL OPTIONS Auto Dial Description The MRTI Auto Dial options allow storage of often used telephone numbers E378 TDN6896A allows storage of up to 9 15 digit numbers Option E379 TDN6897A includes an expansion memory board ADLX and allows storage of an additional 90 16 digit numbers The numbers are stored in nonvolatile memory that is the numbers are remembered even during power outages Auto Dial number entry by mobiles may or may not be allowed as programmed by the installing technician Also a security code may be required prior to auto dial use if so programmed by the installing technician Additionally the auto dial options allow a mobile operator to control the mode of land line signalling Touch Code or rotary A special mixed mode set by the mobile operator can allow a mixture of rotary and Touch Code as described below OPERATOR INSTRUCTIONS 1 Using Auto Dial To use the Auto dial feature simply dial and the auto dial location number 1 to 9 for Option E378 TDN6896A and 01 to 99 for Option E379 TDN6897A This auto dial command may be issued while the is idle or after the has been accessed In either case if a number is stored in that location the MRTI will automatically dial the number pausing if necessary between numbers to
90. d as follows dial 05 location number 4 EXAMPLES 1 0 4 f will clear location 4 2 0 73 f will clear location 73 4 Controlling Land Line Signalling Mode a Programming to default mode mode determined by Switch 1 Section 5 on the OTX board Units are shipped with this mode set 1 dial 0 put in Auto Dial entry Mode 2 dial 0 specifies signalling mode entry 3 dial 0 specifies default mode 4 dial store command b Programming to Touch Code signalling mode 1 dial 0 2 dial O 3 dial 1 specifies Touch Code mode 4 dial c Programming to Rotary with revert to Touch Code mode mixed mode 1 dial 0 2 dial 3 dial 2 specifies rotary with revert to Touch Code 4 dial Note This dialing mode parameter is stored in Parameter 175 bits 2 and 3 and can be accessed via the standard parameter modification routine The following defines Parameter 175 if direct modification is desired starting with 0 1 If existing parameter is odd add l else add 0 multiline terminology parameter 2 If Touch Code mode add 2 else add 0 3 If mixed mode add 4 else add 0 4 If steps 2 and 3 are 0 then default mode 15 the result INSTALLATION If the ROM containing the Auto Dial firmware is being field installed it may be necessary to install the supplied socket in its designated position Carefully install the ROM in its designated socket ensuring that the notch is oriented
91. d telephone number 01 99 MRTI dials stored telephone number 99 AUTO DIAL TELEPHONE NUMBER ENTRY FROM MOBILE MRTI must not be accessed O auto dial programming command followed by L telephone number memory location 1 1 or 2 digits as applicable followed by N N telephone number to be stored N 1 16 digits at memory location L entered as a telephone number digit causes 1 25 second pause in auto dialing followed by memory store command causes telephone number to be stored at memory location L reset to start over anywhere in the sequence E380 TDN6898 SELECTIVE MOBILE SIGNALLING OPTION revertive mobile to mobile call where is mobile paging code in 1 2 3 or 4 digit format Page 8 INSTALLATION CONSIDERATIONS MODE DISCUSSION The MICROPROCESSOR RADIO TELEPHONE INTERCONNECT system provides four basic operational mode options Half duplex full duplex signal search simplex and enhanced vox simplex Basic operation and interfacing requirements are discussed as follows HALF DUPLEX Duplex repeater simplex mobiles and or portables This mode is used when the interfaces the telephone line s directly to the repeater in a radio system utilizing standard simplex control station s mobiles and or portables When the telephone line has been accessed for land line and mobile conversation the repeater transmitter is keyed continuously for the duration of the telephone conversation The
92. e disconnect Parameter is the number 1 9 of 16 second periods in the answer time Range 16 seconds to 2 minutes 24 seconds Minimum of 16 seconds must be used In the following three parameters different numbers of input digits may be required in each of the three selective call initiation methods land line call mobile to mobile and attendant Number of digits required from land line caller 0 4 if 0 the same code will be sent every time without any digits from caller Number of digits required from a mobile in mobile revertive 0 4 if 0 the same number as parameter 30 Number of digits required from an attendant 0 to 4 if 0 the same number as is in parameter 30 Number of times to signal 1 3 does not apply to attendant or revertive calls If set to 0 selective signalling will be turned off If TX PL stripping is desired during signalling add 4 else add 0 The resultant signalling control digit will be 1 72 Revert Security Control Digit The revert security control digit is established by the following procedure Starting with 0 A If revert to ring signalling after 6 seconds without receiving proper numbers add 1 else add 0 disconnect after the 6 seconds B If security code required from land line callers add 2 else add 0 no code required C If security code required from attendant add 4 else add 0 no code required The resultant of the preceding three operations is th
93. e from 2901 Pin 2 female 2 6177 and similar on the receiver chassis to 0401 13 on E the PL deck Locate and remove the soldered 170401 and install a 100k 1 4w resistor in its place Note there are two JU401s shown on the board pictorial The correct one for this function is the one in series between U401 Pin 13 and 0409 base Thisiresistor allows Pin 13 of 0401 swing between detectable logic levels Renge C428 and replace it with 1 capacitor observing polarity tone PL res less Run another black wire from J901 Pin 2 female type TRN4273A and pin on the receiver chassis to U401 Pin 28 on Go the Pb deckz digit l PL Run another black wire from J901 Pin 2 female TRN6207A and pin on the receiver chassis to U301 Pin 7 on the similar c PE decks aes evenly af 3 TX PL Strip Locate the yellow wire running from J701 Pin 10 the filter bracket terminal 10 Cut this wire off at the filter bracket and install a male pin on the free end Insert the pin into J801 Pin 2 position This 5 spare wire that terminates at J601 on the transmitter chassis in the Flexar housing Run another yellow wire from J601 Pin 2010 position may already be present to the cathode side CR120 on the exciter chassis schematic reference point 51 4 2 TX Audio 7 M Run a pink wire rom 2801 Pin 4 position to the
94. e revert security control digit and will be from 0 to 7 33 Access control digit The access control digit is established by the following procedure Starting with 0 If accessible by land line ring add 1 else add 0 B If accessible by attendant add 2 else add 0 C If accessible by mobile add 4 else add 0 The resultant of the preceding three operations is the access control digit and will be from 0 to 7 34 Type of selective signalling 1 Touch Code DTMF signalling two tone sequential signalling 2 The following parameter definitions apply only to Touch Code DTMF signalling PARAMETER FUNCTION 35 Touch code outpulse timing This parameter is the number 1 9 of 50 millisecond periods in the touch code digit and interdigit time Range 50 ms on off to 450 ms on off NOTE The maximum allowable mobile signalling time as prescribed by FCC regulations is three 3 seconds except in certain emergency service applications Since it is possible to configure Touch Code selective signalling so as to exceed the three second requirement it is recommended that the number of digits and digit timing parameters be established to conform to this regulation 36 Number of digits in the preamble 0 5 37 41 Touch code preamble For example if the parameters were set up as follows 3 31 6 32 3 33 7 34 1 N II w 5 37 9 38 8 39 7 40 6 w Ui ou N w The fol
95. ed to storage circuit 41 It is also valley sampled by IC15 B and C The output of IC15C is a voltage representation of the lowest signal level background The differential between this background level and peak level is used as the VOX signal With little or no differential a steady state non voiced signal is indicated and the VOX drops out VOX decay is established by timer 6 Repetitive signals busy fast busy line off hook etc are detected by comparing the voltages on C23 and C24 These capacitors are alternately charged by a constant current from 02 with the charge period being the length of time the signal is present If the voltages are within the design limits it indicates that the signal durations were the same This voltage match clocks counter IC 11 When 5 occurrences of matches signal duration occur repetition is asserted J2 4 Filtered compressed audio is also sent to the audio delay circuit IC 1 is a continuously variable slope delta modulator which digitizes the input audio into a serial bit stream The clock IC7 generates about 128 khz the bit rate The digital signal stream is delayed for 5 seconds by being stored in Dynamic Random Access Memory IC 6 organized as 64K 1 bit words Counters IC 2 and 2A are cascaded to give the 16 bit count required and multiplexers IC 4 and 4A provide the address multiplexing necessary The output bit stream is sent to CVSD demodulator IC 3 which reconstitutes the delayed
96. epeated A land line caller will hear ringing between signalling sequences and will hear the signalling sequences The following parameter definitions apply only to two tone sequential signalling PARAMETER FUNCTION 35 36 2 digit number of desired code plan from the following table General Encode Plan 00 Code Plan M 12 modified gen enc plan 01 N 13 code plan B 02 k P 14 code plan C 03 0 15 code plan D 04 R 16 code plan E 05 5 17 code plan 06 i 18 code plan 07 U 19 code plan H 08 M 20 code plan J 09 21 code plan 10 22 code plan L 11 GE Code Plan 23 PARAMETER FUNCTION 37 1st MSD digit of 2 tone prefix if parameter 30 is less than 3 H 4 PARAMETER FUNCTION 38 2nd NSD digit of 2 tone prefix if parameter 30 is less than 2 39 3rd LSD digit of 2 tone prefix If parameter 30 is 0 which will cause the same 2 tone code to be sent every time 40 Group Call Timing Control Digit Group call timing is defined as follows when tone a tone b then the signalling tone is sent 8 seconds The group call timing control digit is established as follows starting with 0 A to enable group call timing for land line originated calls add 1 else add 0 B to enable group call timing for attendant originated calls add 2 else add 0 G to enable group call timing for mobile originated revertive calls add 4 else add
97. er is held down until the loss of either carrier detect or PL detect Upon loss of a valid mobile carrier the transmitter again begins its previous sampling The radio interface module RIMX incorporates receive audio input programming switches to establish ballpark input levels The MRTI audio measurement and gain control circuits further auto level the mobile to land line and land line to mobile audio paths within a 15 db range Receive audio input is through a high impedance balanced differential circuit to eliminate hum and noise pickup and adverse loading effects on the audio source Receive audio is obtained as follows 1 Discriminator or quadrature detector output prior to high frequency rolloff This method provides audio unaffected by audio level controls Moreover the RIMX squelch circuit provides carrier detect eliminating model to model receiver squelch circuit performance variations 2 Other receive audio interface configurations are possible utilizing the base station squelch circuits for carrier detection but are not recommended Base station transmit to receive recovery time must be less than 15 milliseconds for this mode as is the case in most recent equipment Optional programming as previously discussed is available for station equipment not meeting this requirement PL Detect logic level input connects to the receiver private line decoder output On carrier squelch systems this input is switch disabled t
98. ernal side rail the connection marked GROUND on the newer series of base stations or by removing one of the antenna connector screws and using a lug of the correct size on products such as MAXAR MOXIE This grounding should be extended to the ground utilized by the telephone company s surge protector installed on the phone line s used by the MRTI General System Lightning Protection Considerations The damage done by lightning is due to potential differences developed between equipments between equipment and the power source between equipment and the outside telephone line and finally between equipment and earth ground Two things are imperative if we are to minimize lightning damage 14 All equipment at a site should be bonded frame to frame with adequately sized conductor This common ground should be bonded to the utility entrance ground cable and the telephone entrance ground if different from the utility entrance ground Bear in mind that lightning is essentially r f and as such does not like long leads and will not tolerate sharp bends as it sees this as a high impedance If a tower is used it is essential that the common ground system also be bonded to the tower At a site where these various components are encountered tower utility ground telephone ground it is suggested that 6 bare copper be used as a minimum 2 degree of insurance against lightning after bonding is almost directly related to the RESISTANCE o
99. event the regeneration of Touch Code tone or possible pseudo Touch Codes and consequently the muting of the audio path from the receiver to land line for 6 seconds following a valid Touch Code digit add 4 The resultant parameter will be 0 to 5 D 9 XII XIII Special Mobile Signalling Control Description This feature is used when standard ring signalling ring once for 3 seconds standard 390hz 430hz ring tone at reference level is inadequate for system requirements The ring frequencies may be changed to 800hz 840hz in Situations where standard ringing signals are difficult to hear Additionally the ring tone may also be increased about 6 db if desired In radio services that allow multiple rings to the mobile this parameter can be programmed to cause ring or selective signalling to be repeated every 8 seconds if the rf channel is clear NOTE In many applications below 800mhz the maximum allowable mobile signalling as prescribed by FCC regulations is one time for no more than 3 seconds Therefore be sure that regulations applying to this system are not violated before programming this parameter to allow multiple signalling sequences Installation The parameter modification routine as described under Option E155 TDN6908 in this manual is used to install the control digit Parameter Function 159 Mobile Signalling Control Digit Control digit determination starting with 0 a To change standard ringing tone
100. f was entered into that location 6 Dial dH to close and store the information in the non volatile shadow memory NVRAM Recap To enter in a parameter location Dial NN 1 or 2 digit parameter location number To enter in a parameter location dial NN or 2 digit parameter location number Installation If an IC socket is not present in the ICI position on the OTX processor board install the socket supplied with the field install kit Carefully insert the NVRAM IC in the socket Option E375 TDN6893 Enhanced VOX Module Model OSVX Installation To install the OSVX remove the power and remove the top Push the OSVX onto the mating board connectors Pl and P2 on the OTX board until the connectors lock together Install the two Peel and Stick rubber bumpers on the inside front panel to align with the 2 blank spots over each connector on the OSVX Power up the MRTI and test for operation Reassemble the cabinet No adjustments to the OSVX are required Circuit Description Phone line audio enters the OSVX on pin 2 of IC28 C and D make up a high pass filter to eliminate hum rumble etc The output of this filter is sent to MRTI for decoding etc Through IC8A to J1 8 This filtered signal is also sent through a processor controlled gate IC17D to the compressor circuit consisting of IC20 and 19 The compressor control voltage generated by IC20D and C is peak sampled by IC20B and appli
101. f hook LED should lite Remove short restoring 48 volts to Pin A and B of LIM module off hook LED should go out 3 If access LED does not lite on OTX board check 04 circuit on OTX Check 02 01 Kl circuits on RLM board correct as applicable Measuring across tip and ring on the RLM board with an AC meter does the meter indicate approximately 10db 25 VRMS in test 1 Measuring across Pins 6 ground and 7 of the RLM header P7 with the AC meter is approximately 8db 31 VRMS indicated Yes No possibilities possibilities 1 Check Fl fuse on RLM 1 Check for output of tone board generator 1 at pin 3 of IC31 on the OTX board approx 44 VRMS in test 1 2 Check for output of tone generator 2 at pin 3 of IC32 approx 44 VRMS in test 1 on the OTX board 3 Check for output of SNS Amplifier at Pin 1 of 1041 approx 56 VRMS in test 1 on the OTX board 4 Check for output of phone line driver and at pin 8 of ICA approx 56 VRMS in test 1 on the OTX board 2 Check IC 2 voice power limiting circuit LED turned on hard with no phone line Audio applied correct as applicable correct as applicable Page 34 Remove the modular plug from the phone company jack Start Test 2 The LED display should show the numbers 1 thru 0 and 2 blank segments and not displayable in sequence This test exercises most of the linear circuits on the OTX RIMX and
102. f the earth ground s used All grounds connected in parallel contribute to lowering the net ground resistance tower utility telephone if independent For hot sites sites where lightning is known to regularly cause damage it is well to use multiple ground rods spaced several feet apart and bonded together with 6 or better wire If soil is sandy or rocky the local utility company can usually provide excellent advice if their engineering office is contacted relative to the local methods used to obtain low resistance ground Many times these utility engineering departments will measure your site effective ground resistance with their specialized equipment if approached in the right way Remember the potential of lightning is what does the damage and the lower the ground resistance the lower the lightning potential Page 15 FE Set up and Interfacing RIMX RADIO INTERFACE MODULE Switch Settings All of the MRTI inputs and outputs connected to the radio station equipment are located on the RIMX The base receiver related audio and logic input circuits are switch programmable to accommodate the various operating mode requirements The following is a description of switch functions 5 1 PL Detect enable on for private line systems off for carrier squelch systems SW2 carrier detect select on for external squelch circuit off for internal squelch circuit SW3 carrier detect logic on for carrier toward ground direc
103. ication of mic enable from the radio processor possibilities Check setting of RIMX switches against the installation instructions for the radio being used especially carrier det direction etc Check with DC voltmeter the point where the blue receiver carrier indicator wire from the radio cable is connected to the radio Cause audio to be received and verify that the logic level is changing at this point Ensure that the ground connection from the MRTI cabinet to the radio Frame is securely made correct as applicable Page 39 See Does the PL detect LED on the RIMX light when the patch button is pressed a system mobile indication of patch enable from the radio processor Yes No Check settings of the RIMX switches against the installation instructions for the radio being used especially P L detect direction etc 2 Check with a DC voltmeter the point where the black wire PL detect input is connected to the radio 3 Verify that the logic level is changing when the mobile patch button is operated and released correct as applicable Does the PL strip LED light and the point where the brown wire patch status from the radio cable connects to the radio go from logic high to logic low possibilities Go to Test 2 and check operation of the TX PL strip relay The resistance between the brown
104. ide pin no s refer to 28 pin ROMs R236 1 5 8685 PAGE 49 IAI PARTS LIST OTX C SYSTEMS PROCESSOR BOARD REFERENCE SYMBOL 2 WHEN ORDERING REPLACEMENT PART INCLUDE IC3 43 1C4 29 35 41 1C6 7 8 9 1 10 1 1 12 13 14 15 17 IAI PART NUMBER INTERGRATED CIRCUITS 3301 10003 00 3301 10062 3301 10022 00 3301 10029 00 3301 10004 00 3301 10034 00 3301 10036 00 3301 10035 00 DESCRIPTION NON VOLATILE RAM READ ONLY MEMORY SUFFIX NO MARKED ON ORIGINAL PART QUAD SCHMITT NAND GATE QUAD OPERATIONAL AMPLIFIER READ ONLY MEMORY MICROPROCESSOR PROGRAMMABLE TIMER PARALLEL INTERFACE ADAPTOR IC18 3301 10024 00 DISPLAY LATCH AND DECODER Ic24 3301 10028 00 HEX SCHMITT INVERTER Ic20 3301 10061 00 DTMF DECODER IC22 23 3301 10005 00 TRANSCONDUCTANCE AMPLIFIER IC25 30 3301 10013 00 QUAD ANALOG GATE IC26 42 3301 10006 00 QUAD FET INPUT OPERATIONAL AMPLIFIER IC27 28 3301 10009 00 ANALOG TO DIGITAL CONVERTER 1C31 32 33 36 37 38 39 3301 10020 00 ANALOG MULTIPLEXER IC34 3301 10001 00 DIGITAL TO ANALOG CONVERTER 1C40 3301 10025 00 4 BIT BINARY COUNTER ICZA 4601 10113 00 HEX QUAD IC21 4601 10112 00 HEX SCHMITT TRIGGER RESISTORS R260 3303 00220 10 22 1 4W 5 R258 3303 02700 10 270 1 4W 5 R21 3303 06200 10 620 1 4W 5 R2 99 100 101 102 3303 08200 10 820 1 4W 5 103 104 105 3303 08200 10 820 1 4W 5 R64 70 253 254 3303 01001 10 1K 1 4W 5 R236 3303
105. ignalling to switched network on Touch Code off rotary Mobile call origination on yes off no refer to Page G 3 Parameter 96 Switched network land to mobile call origination on yes off no Duplex simplex select on half duplex full duplex off simplex Page 18 SW2 Section 1 Option SW2 Section 2 Access time coded tones on tones off no tones SW2 Section 3 60 second mobile inactivity disconnect on yes off no SW2 Section 4 Emergency three minute timer override on can be overridden off cannot be overridden SW2 Section 5 3 minute access timer on automatic release after 3 minutes off 3 minute release SW2 Section 6 Mobile signalling start land to mobile calls on first ring off fourth ring SW2 Section 7 Transmit PL stripping on automatic on access off on command only SW2 Section 8 Attendant line sharing telephone set control on yes off no Upon completion of switch programming press the red reset button This causes the MRTI to read the switches and change the program appropriately This must be done every time a switch setting is changed Page 19 LEVEL SETTING The MRTI should now be connected to the radio station equipment and the RIMX and OTX switches set as appropriate to user specifications Transmitter Audio Level The following tests associated with the TX level setting will indicate transmitter modulator IDC
106. ilized by the telephone company s surge protector installed on the phone line s used by the MRTI General System Lightning Protection Considerations The damage done by lightning is due to potential differences developed between equipments between equipment and the power source between equipment and the outside telephone line and finally between equipment and earth ground Two things are imperative if we are to minimize lightning damage 4 1 equipment at a site should be bonded frame to frame with adequately sized conductor This common ground should be bonded to the utility entrance ground cable and the telephone entrance ground if different from the utility entrance ground Bear in mind that lightning is essentially R F and such does not like long leads and will not tolerate sharp bends as it sees this as a high impedance If a tower is used it is essential that the common ground system also be bonded to the tower At a site where these various components are encountered tower utility ground telephone ground it is suggested that 6 bare copper be used as a minimum 2 The degree of insurance against lightning after bonding is almost directly related to the RESISTANCE of the earth ground s used All grounds connected in parallel contribute to lowering the net ground resistance tower utility telephone if independent For hot sites sites where lightning is known to regularly cause damage it is well to use multiple
107. ill only put out a short burst of Touch Code signalling The MRTI will recognize these units with no problem if the transmit button is pressed a second before the Touch Code signalling commences Then signalling may be entered at a normal rate Now refer to the General Description section for further instructions and discussion of optional equipment Page 1 P Enhanced Vox Simplex Mode In this mode the MRTI is installed either on your base station or on a wire line remote control located away from the radio base station The feature unique to this mode of operation is the cross lock out between you the mobile radio party and the telephone line party This means that whoever begins speaking first maintains control of the conversation until he is finished speaking Then the other party may speak and maintain control of the conversation until he is finished speaking Then the other party may speak and maintain control locking out the first party from being heard until speaking is finished The MRTI recognizes signalling tones to be different than speech and will interrupt such tones as dial tone busy tone etc for mobile control Typical operation is as follows Press the button on your encoder After a short delay you should hear the dial tone for about 2 seconds duration When it drops out enter the telephone number You should follow the telephone number with another This second tells the MRTI that you are fini
108. in 15 minutes as precaution Carrier Detect Adjustments 1 If utilizing the RIMX squelch circuit for carrier detection and not the carrier detect logic input Starting from the maximum level clockwise adjust the squelch control on the RIMX so that the desired quieting level at least 10 db recommended causes the carrier det LED to light 2 If utilizing the carrier detect logic input and not the squelch circuit for carrier detection Adjust the threshold control on the RIMX so that the carrier det LED lights when the receiver is unsquelched and goes off in the squelched condition Page 20 Receiver Levels 1 If utilizing the discriminator detector output No level setting necessary apart from RIMX switch settings If utilizing speaker audio source Adjust the internal volume control where applicable such as wire line remote consoles for a level of 10 db 2 5 vac or alternately 5 db 0 45 vac see RIMX Set up and Interfacing section with a 1000 hz tone deviated 4 khz into the receiver Level setting complete Page 21 INSTALLATION CHECKLIST Connect MRTI to radio station Check for proper grounding and lightning protection Set switches on RIMX board refer to RIMX Switch Settings Set switches on OTX board refer to OTX Switch Settings Installation level checklist a Punch up test 1 set TX deviation to 3 khz no PL tone b Punch up test 8 tone 8 Insure 4 5 khz deviation
109. ing accessed indefinitely SW2 Section 5 on the OTX board turned on Page 17 4517 5517 OL NOLIVIS JOXINOD OB IHX WVIDYV G 9NIT8V2331N Bram arians vim 5 PX 7 gwnoso artddas APIA 2146 SLIHM ANId 22M 18 NMO38 MOTTIA JONYWO 1310I 3339 NL 439 08 VX 22 on MNA Y AINO 300W HOWNAS 1VNOtS 304 QNV ONIPINAAS Youd 51075 SISSWHO ILYN 04100 yams S371T982 BION VW DLL CA INT 2731 qzriddng a1uw 3w1naow 2050 3182 9045 Qas1vnow 18 NINLSyY 2 907 1951054 74405 4 gt AOLINGNOD LINW 788117 031883 YAWN 04 SNWaL NI 9NId YM 1 MICOR RCB REPEATER MRTI Duplex and Half duplex Modes To facilitate easier installation and servicing the screw terminals TB3 should be utilized for connection of the MRTI P12 interface cable It is suggested that the following jumper wires should be soldered into the holes adjacent to the screw terminals rather than wrapping the jumper ends around the terminals Install the following jumpers From To function 1 screw terminal 9 J5 pin 9 PL stripping 2 screw terminal 13 sta cont Pin 21 Rl disc 3 screw terminal 15 Fl PL Pin 22 exciter input 4 screw terminal 17 J2 10 P L indicator In order to use the P L stripping function a jumper must also
110. is used as the receiver carrier source The exception is in full duplex applications when the 4 wire audio kit is installed on the remote In such installations the MRTI would require the E376 TDN6894 Full Duplex Option Connect the MRTI radio cable to the remote as follows Radio Cable Interfacing Color Function Terminal Grey Receive audio hi 13 Violet Receive audio lo 12 Pink Transmit audio hi 28 Tan Transmit audio lo 27 White Push to talk 15 Green Push to talk return 1 Orange Monitor rec PL disable 19 Yellow Monitor return 1 Blue Receive carrier indicate n c Brown Transmit PL disable n c Red Transmit PL disable return n c 12 black ground Logic lightning ground 1 RIMX Switches off carrier squelch SW2 don t care SW3 don t care SW4 don t care SW5 off hi level speaker audio SW6 on no de emphasis OTX Switches SWl 1 don t care SW2 1 n a 5 1 2 on SW2 2 as required SW1 3 off SW2 3 normally on SW1 4 user determined SW2 4 as required SW1 5 as required SW2 5 normally on SW1 6 normally on SW2 6 as required SW1 7 normally on SW2 7 n a SW1 8 off SW2 8 as required Level Setting The remote should be set to provide 10dbm output measured at the 8ohm hot output with any Touch Code digit from a properly adjusted mobile Also refer to LEVEL SETTING in the MRTI Instruction Manual Page 25 Important Note The line input level to the remote should be adjusted to the minimum level that will provide satisfact
111. k Test Tests the MRTI ability to monitor activity on its telephone line when not accessed The transmitter is keyed and the audio path is established from the non accessed telephone line through the variable gain stage to the transmitter when off hook is detected by the MRTI The decimal point on indicates off hook The Touch Code decoder is driven from the non accessed SN displayed on the display Ringing on the non accessed SN is indicated by the flashing of the decimal point Single Tones to the Transmitter and SN Single tones are sent to the transmitter and switched network at 0 db with respect to reference in test 1 except for tone 8 5 db The sn is accessed and the transmitter keyed each tone is 5 seconds Reset freezes the test and a second reset resumes the test The tone number is displayed on the display The decimal point on indicates PL DPL logic input or carrier indicate 697 770 852 942 1209 1336 1477 1633 2000 at 5 db Mu IH S O This test position is used to modify parameters in the optional NVRAM Refer to the section Parameter Modification Procedure in the Option E155 TDN6908 Section A for details Page 24 CIRCUIT DESCRIPTION THEORY of OPERATION RLM 3 Registered Line Module The RLM 3 interfaces the public switched telephone network to the MRTI control module It is registered with the FCC under part 68 of the FCC regulations It provides a very high degree of
112. lay closure relay closure relay closure return return return return return return return Bg S gt O O UT Option E382 TDN6900 Consolette Subfleet Control from Mobile Module Model ORCTX 2 Binary Switch Format Operators Instructions The ORCTX 2 module allows the mobile operator to remotely control the fleet subfleet switch selection on the base station For example by entering the 3 control sequence you may effectively select subfleet 1 on the radio front panel switch You now have control of the radio fleet subfleet switch and may select one of seven 7 sequential switch selections from your mobile by entering the Touch Code commands as described at the bottom of this page Control is returned to the base station switch only after you enter either or patch disconnect command Functional Description The E382 TDN6900 option provides mobile selection of seven 7 sequential fleet subfleet selections on trunked base stations via 4 bit binary format Relays on the ORCTX board simulate the base station front panel sub fleet switching only and do not alter the code plug options within the trunking micro computer system This option features a jumper programmable binary adder function that allows the seven N command selections to be moved anywhere in the 16 fleet subfleet selection scheme The ORCTX takes control of the base station sub fleet selection u
113. lay indicates the state of the patch inhibit input lighting when at logic low 2 Transmitter and SN Linearity Touch Code Decoder Test This test effectively tests most of the linear circuits in the MRTI The transmitter is keyed the sn is accessed and TX PL disable is activated The tone generators generate touch code 1 to 0 and jf at 8 levels from 18 db to 5 db 3 db steps with respect to reference in test 1 The tones are sent to the phone line and the transmitter The Touch Code decoder is fed from the phone line effectively and its output displayed on the LED display The display decimal point displays data valid Therefore with the phone line unterminated the display should show all 8 levels of all tones except and which cannot be displayed although the decimal point will indicate data valid The reset button will slow the test The second reset will freeze the test and the next reset will resume the test 3 Receiver to SN Test This test may be used to test mobile Touch Code encoders distortion etc The SN is accessed and the monitor function is activated The audio path from the receiver through the variable gain stage to the switched network is established The Touch Code decoder is fed from the receiver and its output displayed on the LED display When the decimal point is on Touch Code data valid is indicated The audio path is autoleveled by the processor to test the firmware 4 Swit
114. le signalling If the security code is required from the attendant before direct access is possible add 4 to one of the above numbers The resultant parameter will be from 0 to 7 Parameter 255 Land line caller direct access control parameter 0 no land line caller access control 1 automatic connect after mobile signalling 2 requires from land line caller to connect after mobile signalling 3 requires an A fourth column Touch Code digit from land line caller to connect after mobile signalling If the security code is required from the land line caller before direct access is possible add 4 to one of the above numbers The resultant parameter will be from 0 to 7 MRTI systems that have been programmed for direct access as described above it may be desirable to place additional timing restrictions on these land to mobile calls that have been initiated without supervision by mobiles or control points These restrictions have been designed to conserve air time and are controlled by parameters 207 and 223 Land Line Message Hailing Timer Description Provides a timed interval for paging or addressing a mobile of up to 45 seconds Parameter 207 Land line message hailing timer the number of 5 second periods allowed from direct access immediately following mobile signalling until disconnect occurs or a system mobile carrier is detected as described below range 1 9 5 sec 45 sec 0 dis
115. llers Attendant Connect Control The attendant connect control adds attendant control of the to the standard mobile control in all non trunking systems Mobile users may be addressed verbally following mobile signalling in an attendant originated call The attendant also has the ability to release the telephone line with command See XV for installation Land Line Caller Connect Control Description The land line caller connect control adds caller control of the MRTI to the standard mobile control and attendant control in all nontrunking systems Like attendant control above mobile users may be addressed verbally following mobile signalling ring or selective signalling as appropriate land line caller originated call The land line caller also can cause the MRTI to release by sending the command if his phone is Touch Code equipped IF not the MRTI can be released by a mobile or will time out depending on how the timers are set Installation The parameter modification routine as described under Option E155 TDN6908 in this manual is used to install the control digit Parameter 239 Attendant direct access control parameter 0 no attendant access control 1 automatic connect after mobile signalling 2 requires from attendant to connect after mobile signalling 11 Parameter 239 cont d 3 requires an fourth column Touch Code digit from attendant to connect after mobi
116. lowing conditions would be established 1 The mobile used would have approximately 1 1 2 minutes 96 seconds to respond to a land line call before the landline caller was dumped 2 The MRTI would accept three digits from the land line caller If the caller does not enter the digits within 6 seconds the MRTI will send simulated ring signalling instead of selective signalling 3 Signalling will occur twice for land line and mobile revertive calls and the TX PL stripping relay will operate during signalling A Land line callers must preface the selective signalling digits with the security code part of utilities Option E377 TDN 6895 Upon receipt of the security code an additional 6 seconds is allotted for receipt of the selective signalling digits 5 Land line attendants and mobile to mobile selective signalling is allowed 6 Touch code DTMF signalling will occur 7 The selective signalling preamble will contain 5 Touch Code digits 8 The preamble digits will be 98765 Therefore if a caller sends selective signalling digits of 321 prefaced by the security code if necessary the will check for channel activity and when clear key the transmitter with no tones for 375 seconds and then send the DIMF tones 98765321 formatted 100 milliseconds of tone 100 milliseconds of no modulation If dialed by a land line caller or mobile if no response is heard after 15 seconds the code will be r
117. ly interrupts are generated every 5 milliseconds on the IRQ line short negative pulses every 5 milliseconds It has been established that anything that upsets normal processor operation such as inadvertently shorting data lines induced pulses from external sources etc will cause the IRQ pulses to change drastically in frequency 1 3 and associated parts keep reset from occurring as long as IRQ pulses are present When lost the system will automatically reset and attempt restarts until successful Processor Bus Related Functions A Chip select decoder IC2 decodes the addresses generated by the processor and enables the appropriate ROM RAM PIA or PTM NVRAM optional IC1 provides 256 four bit bytes of shadow type nonvolatile random access memory C Processor IC10 is the microprocessor which controls the System The 3 58 mhz clock signal is derived from the Touch Code decoder IC20 which is crystal controlled D Parallel Interface Adaptors PIAs 12 13 14 15 and optionally 16 17 are 20 line devices which can be programmed by the processor such that each line can be an input readable by the processor or a latched output Most of the inputs and outputs of the processor are through these PIAs E Programmable timer module 1 11 is three section timer module that times the 5 millisecond interrupts and generates the square waves for tone generators 1 and 2 F Read Only Memories The MR
118. monitor receiver to monitor the channel prior to ring or selective signalling FULL DUPLEX Duplex repeater duplex mobiles and or portables Operation in this mode requires the FDMX module E376 TDN6894 This mode features simultaneous land line to mobile and mobile to land line conversation When the telephone line has been accessed for telephone conversation the repeater transmitter is keyed continuously for the duration of the telephone conversation The MRTI audio measurement and gain control circuits automatically standardize the mobile to land line audio path while the FDMX module audio circuits maintain a uniform average land line to mobile audio path The FDMX also features an electronic hybrid circuit which maintains a high quality audio path The radio interface module RIMX incorporates receiver audio input programming switches to establish ballpark input levels The MRTI auto level circuits further adjust audio levels within a 15 db range The RIMX audio input is through a high impedance balanced differential circuit to eliminate hum and noise pick up and adverse loading effects on the audio source Repeater receive audio may be taken from several places as follows 1 preferred discriminator or quadrature detector output prior to high frequency rolloff This method provides audio unaffected by level controls within the repeater Moreover the RIMX squelch circuit can be utilized simplifying overall installation
119. mote microwave channel etc to the OTX control module Additionally the input power is converted to the voltages required by the system A very high degree of immunity to lightning type impulses is achieved in the design and layout of the RIMX Power for the MRTI is supplied through a transformer that is plugged into a receptacle external to the MRTI This transformer inherently provides a large amount of protection from impulses and surges Also powered by external D C thru Pll pin 1 and 2 A C input 18v nominal D C 10 5 16v Additional thyristor protection is provided on the RIMX and is very effective when the MRTI is installed and grounded in the t radio system as detailed in this manual under Lightning Protection IC1 is the constant frequency pulse width controlled switching regulator control element for the 5 volt supply D21 provides failure mode protection for the system IC2 is the switching regulator for the 6 supply Page 25 Logic outputs to the radio are through relay closures and logic inputs from external sources are through high impedance 200k inputs Audio output to the radio transmitter is through an isolation transformer driven by a variable gain amplifier stage Audio inputs from the receiver and optionally an auxiliary channel monitor receiver are via high impedance balanced differential inputs PL detect input from radio if applicable can be set to respond to positive or negative inputs
120. nction Reverse burst disable relay closure The Monitor relay is operated during access and provides a relay closure for disabling the delayed PTT function on P L stations Also operates during standard ring signalling ENHANCED VOX SIMPLEX Simplex base station Simplex mobiles portables used in high interference environments where signal search simplex is not feasible or in applications where mobile carrier is not directly available repeater control stations or remote control points Operation in this mode requires the E375 TDN6893 Enhanced VOX Option This mode features negative response time VOX operation on land line audio utilizing digitally delayed transmit audio This eliminates lost words from the telephone party while maintaining apparent instant VOX response time Featured also are audio processing circuits that automatically adjust the VOX circuits thresholds for background noise and detects the presence of land line signalling such as dial tone busy tone etc The mode of operation is standard cross lockout VOX Initially with no audio detected from the mobiles or from the land line the MRTI is in the idle condition with the base station in receive VOX detected audio from either direction will lock out the other direction Receive audio from the mobile maintains the receive condition Land line speech maintains the transmit condition Land line signalling is allowed to proceed for a few Page 13
121. nd E of 1024 1 25 Peak value is determined by IC24D IC25A C49 and IC26D This peak value is applied to step comparator IC27 The digital output at the step comparator is converted to a 20 step sine wave by the associated resistor network Processor controlled amplitude is provided by IC30C IC30D and IC29C Low pass filter IC29C removes the steps in the sine wave IC31 distributes the resultant output to various circuits Tone generator 2 is the same except its low pass filter rolls off at a higher 3db at 2500 hz frequency Page 26 Peak Reading Voltmeter Circuit Processor controlled input to the voltmeter is via IC38 Range select is controlled by 39 and amplifier IC42C This Signal is rectified by the precision rectifier circuit of IC42D and IC42A This de level is compared with the voltage generated by counter 1040 and associated 1 2 resistor network in comparator IC42B The comparator output controls clock generator IC43C The processor selects an input sets the range and resets the counter When an ac signal is detected the counter counts up to the peak value of the signal The processor will then read the counter output and respond as required Switches Network Amplifiers IC41A mixes the various signal sources in a summing amplifier configuration This summed signal drives the switched network line through driver IC4C Signals from the switched network are amplified by IC4B and distributed as necessar
122. nsmit turn off delay in repeater control station installations When the is being installed in control station controlling a repeater it is necessary to ensure that the repeater does not stay on the air after the control station unkeys If the MRTI detects carrier and PL DPL if applicable after unkeying the control station it will erroneously be seen as a mobile transmission In systems that require PL DPL and retransmit not generate the PL DPL signal such as most community repeaters no problem will be encountered since carrier only will not be seen as a system mobile Some repeater stations have a jumper for turn off delay but many of them will delay turnoff more than a second even though the 0 position is selected In these cases reducing the timing capacitor to a much smaller value will produce the required results for example changing Cll on a MICOR repeater TLN4662A squelch gate module from 68UFD to 4 7UFD 2 60 Second Mobile Inactivity Timer In the Enhanced VOX Simplex Mode the land line caller cannot be interrupted by the mobile until the 30 second timeout Therefore it is possible for the mobile to hear the warning ticks and not be able to reset the inactivity timer because the land line party is talking Therefore it is recommended that the mobile inactivity timer be disabled SW2 Section 3 the OTX board turned off in Enhanced VOX Simplex systems If the mobile drives out of range the three mi
123. ntrol D 11 Land line Message Hailing Timer D 12 Variable Overall Access Timer D 13 II Table of Contents continued PAGE E378AA TDN6896A Auto Dial I 9 number storage and E379AA TDN6897A Auto Dial II 99 number storage 1 Operator Instructions G 1 2 Installation 5 49609059 sate sera G 3 3 Board Layout 1 G 5 4 Schematic Diagram G 5 54 Parts G 6 H E380AA TDN6898A Selective Signalling of Mobiles Touch Code or two tone sequential le Operator Instr uctions 9 95 95oo4 7 H 1 2 Installation 9 2 295 0 0 05e H 1 L E381AA TDN6899A Mobile Control of External Functions 1 Operator Instructions L 1 2 Installation L 1 3 Board Layout ORCTX 1 L 5 4n Sehenatio Diag Ea d5 1 5 Parts 1 6 E382AA TDN6900A Consolette Sub fleet Control From Mobile Binary Switch Format Ll Operator Fossa see L 3 2 Installatioj so L 3 3 Board Layout 2 L 5 4 Schematic rss L 5 5 Parts Listen sssss lt 2 ss a sre ms L 6A E383AA
124. nute access timer will prevent the MRTI from staying accessed indefinitely SW2 Section 5 on the OTX board turned on Page 7 4811 6611 OL NO LWLS 95 0 ILLITOSNOD YWIIW cow XITIW IS OWNYHNI wor weaoe d 478 lt 0 9758 4841 aal lt 10v QNNOYD za SISSvHo 0 w 071 WOLLYLS 3S FLLIIOSNOD 991100 NOLS 9mN 4S1x3 WLIM 275 LIWY WOD 28 01 N3SOKP 2WNIWYSL 491 wo LAL 49650140 AL lt P rv Wt p 218247 G ee AW lt s V NMOYG 22745 9019 5 291 4 05 2w7g 2 36 DONIDINYIZ Woo 51075 S SSYHD ILYW ALON FO 100 34115 37942 77vW 2119 IN 7 065 aw DULY 2060 31QWD 001 Qairvnow SISSWHI w Wenlaye 2 0072 0 12310 ININLHOIT 099405 NIYAN 00 YIM NOI SNL N 903d UM 031883 MAXAR and MOXY Bases characterized by all pins in the cable connector being the same size Install the following modifications additions to the base station utilizing the necessary 1 RX Detector Audio TX PL Disable PL Detect tone PL reed type TRN6177C and similar tone PL reedless type TRN4237A and similar digital PL TRN6207A and similar reverse burst disable tone PL reed type TRN6177C
125. nversational audio This will occur even if the channel is busy Therefore a mobile user talking may not hear the connect message This feature is available only on L1158 multiline Refer to XI for installation Inhibiting Pseudo Touch code Regeneration During Mobile Dialogue The enabling of this feature prevents the regeneration of Touch Code tones or possible pseudo Touch Codes and consequently the muting of the audio path from the receiver to land line for 6 seconds following a received Touch Code digit The use of this function requires the mobile user to depress a second immediately following the entry of the telephone number dialed normal procedure Precautionary note The use of this function excludes the regeneration of Touch Codes to the land line when mixed mode revert to Touch Code is utilized with the auto dial Option E378 TDN6896 E379 TDN6897 However Touch Codes from the mobile are passed to the switched network and should not present any problem when the receiver is receiving a fully quieted signal Operation under weak signal conditions may prove unreliable See Section G Controlling Land Line Signalling Mode of this manual Installation The parameters are entered into the NVRAM as described under Option E155 TDN6908 in this manual Parameter 143 Starting with 0 a enable emergency call direct access add 1 else add 0 emergency call access disabled Refer to X for description b To pr
126. o provide continuous PL detect condition MRTI PTT to one of the following 1 Preferred Mike PTT On private line squelch base stations this requires the disabling of reverse burst timing while the MRTI is operating the transmitter The MONITOR relay closure is operated closed during access in this mode of Page 12 operation in order to facilitate this function The monitor relay contacts connect to a point which disables the PIT delayed off function and yet allows the private line encoder to operate 2 PTT point on the base station transmitter that does not activate the delayed off reverse burst function In some cases the point designated DELAYED PIT satisfies this condition The MRTI PTT sense function used to detect station busy station ID required is incorporated into the PTT output Therefore the station PTT source chosen should operate when the transmitter is keyed from base mikes desk sets or other sources Transmit audio output is also balanced to provide hum and noise immunity and connects to the base station mike high and mike 10 inputs The MRTI output is virtually transparent to circuit impedances of 600 ohms or less Jumpers that keep the base microphone or desk set handsets hot should be cut PL stripping transmit pl disable a relay closure is provided This feature is on off controllable by a mobile command and may be switch programmed to operate on access Release always resets this fu
127. oard leaves the patch chassis through the large option slot on the rear of the patch chassis The snub bushing provided on the cable slides into the slot affording strain relief Refer to the INSTALLATION MANUAL for specific base station interface details L 4 REMOTE CONTROL TRUNKING PI2I IS I Model ORCTX 22 Set R ED4 LEDS LED2 LEDI LED7 LED6 LED5 1 L JF 7 d O 31 asco G 4 381 de ae RI3 ESA n 7 07 D6 05 Ico a 10P ABCDEF GH NOTE CIRCUIT BOARD IS SHOWN FROM COMPONET SIDE 03171983 R30 4 R32 R33 C IB M 2 5 4 FSA 9 R3R4 PBI JUMPERS LED7 12 8 85 PB2 1 56 Y R6 pgs 7 R7 H 14 6 PBS LEDG 12 R8 c2 26 5 OOPF 27K gt 45 T 71565258 2 LED54 12 27K m NZ SG host gt hd 10 1 NOTES L CAPACITOR VALUE IN MFD UNLESS STATED OTHERWISE 2 RESISTOR VALUE IN OHMS 04 12 GET S K 6 S 4 e 3 S LEDI 12 Pu IOP JUMPE I t 2 3 4 5 Rat IOKS UNLESS STATED OTHERWISE 5 100KS I00KS e 10 INDICATE CONNECTION TO 5 V lt R25 UNLESS STATED OTHERWISE RI c Roe 4 DIODES ARE 1 914 4 3
128. of FCC Rules which are designed to provide reasonable protection against such interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measure may be required to correct the interference Page 7 ABBREVIATED MOBILE COMMAND CHART Note All multidigit control functions must be entered with maximum of 1 second interdigit time STANDARD access telephone line release telephone line redial last number called overrides line busy le gt after access 3 minute timer disable before access answer if called special applications after access flash momentary on hook to regain dial tone where applicable attendant access code 1 TX PL tone on 1 TX PL tone off E381 TDN6899 Mobile Control of External Functions Option N function on where N is one of 7 functions N 3 9 function off E377 TDN6895 MULTI FUNCTION UTILITIES OPTION multidigit access code 1 4 digits multidigit release code N 1 4 digits O N executive override code N 1 6 digits overrides a variety of programmed restrictions E378 TDN6896 OPTION CONTROL 9 NUMBER AUTO DIAL I 51 dials stored telephone number 1 9 dials stored telephone number 9 E379 TDN 6897 OPTION CONTROL 99 NUMBER AUTO DIAL II 01 MRTI dials store
129. one caller dials the MRTI telephone number the MRTI detects ringing on its line as indicated by flashing decimal point of display on OTX processor board After ensuring that the channel is available carrier detect and PTT sense LED must be off located on RIMX board or absence of receive audio or noise in audio vox mode Indicated in test 5 by an extinguished decimal point of display on OTX processor board the MRTI transmits one three second ring tone To answer the call the mobile operator presses on his encoder after the ring tone ceases The MRTI will access the telephone line and conversation may proceed as outlined in the previous sections When the conversation is over the mobile operator sends a to release the telephone line The MRTI will confirm release with a series of short beep tones This completes instructions on the basic MRTI telephone call originated from a land telephone The MRTI has a number of standard convenience features including 1 Re dial of the last telephone number dialed 2 Flash signal Applicable on certain PBX equipment 4 This allows the mobile user to regain in house dial tone without releasing and reaccessing the patch call transfer etc 3 Answer if called before access Will access the telephone line only if an incoming call is waiting Special application 4 The end of telephone number signalling time is announced by a short beep after which the voice p
130. one of three possible programming ports Next dial 1490 the parameter access code If you should misdial the code the will revert to test 1 If this occurs restart the test using the above procedure After dialing the access code any parameter may be examined and changed To open a parameter location dial the parameter A 1 number followed by a The number stored at that location will be displayed on the LED display To change the displayed parameter dial the number you wish to store in that location or to display the next parameter without changing the displayed parameter dial another To close a parameter location dial a which will blank the display At this time another location may be opened as described above or you may exit the routine by dialing second This will cause any new parameters to be stored in the shadow memory If the reset red button is pushed while in this routine any parameter changes made while in the routine will be cancelled with the old values being restored A couple of examples follows To change parameter 08 from 3 to 7 1 Push test button until 9 is displayed 2 Dial 1490 on Touch Code encoder 3 Dial 08 on Touch Code encoder The old parameter 3 will be displayed 4 Dial 7 The next parameter parameter 9 will displayed 5 To examine parameter 10 dial 6 To close these locations dial 7 check parameter 8 dial 08 7 is di
131. ons When the MRTI Is being installed in a control station controlling a repeater it is necessary to ensure that the repeater does not stay on the air after the control station unkeys If the MRTI detects carrier Page 16 and PL DPL if applicable after unkeying the control station it will erroneously be seen as a mobile transmission In systems that require PL DPL and retransmit not generate the PL DPL signal such as most community repeaters no problem will be encountered since carrier only will not be seen as a system mobile Some repeater stations have a jumper for turn off delay but many of them will delay turn off more than second even though the 0 position is selected In these cases reducing the timing capacitor to a much smaller value will produce the required results for example changing Cll on a MICOR repeater TLN4662A squelch gate module from 68UFD to 4 7UFD 60 Second Mobile Inactivity Timer In the Enhanced VOX Simplex Mode the land line caller cannot be interrupted by the mobile until the 30 second timeout Therefore it is possible for the mobile to hear the warning ticks and not be able to reset the inactivity timer because the land line party is talking Therefore it is recommended that the mobile inactivity timer be disabled SW2 Section 3 on the OTX board turned off in Enhanced VOX Simplex systems If the mobile drives out of range the three minute access timer will prevent the MRTI from stay
132. oper settings for this installation refer to the manual receiver set the control T502 on the RIMX to just illuminate the carrier LED refer to Level Setting in this manual operation across the gray RX audio hi and violet RX lo wires from the radio cable where they are radio interface module switch settings in this a 10db quieted signal injected into the IC5 106 ICA IC8 IC9 circuits for proper correct as applicable With radio receiving a system mobile is the PL det LED time Activa mobile decode decima modula does receiv in non PL systems PL LED is on all the possibilities Check setting of RIMX switches Ensure system ground between MRTI and radio is in place Measure where the black RX PL detect wire from the radio cable is connected to the radio with a DC voltmeter or oscilloscope PL systems only When PL is being received the opposite logic level should be seen from that of not receiving PL logic thresholds greater than 3 5v high less than 1 5 volts lo correct as applicable Speaker Audio Procedure te Test 3 Transmit Touch Codes from a system or equivalent Does the LED display show the d digits from the mobile and the display 1 point indicate digit valid when receiving tion from the mobile Also advance to Test 5 display decimal point indicate RX VOX when ing modulation from the mobile Page 36
133. ortable radio equipped with a DTMF pad or encoder can also be used to load parameters This method requires that the MRTI be first installed and basically operational before the options can be programmed 3 The MRTI can also be programmed from an external telephone two telephone lines are required one for the MRTI and a second line from the test telephone that will be used for parameter storage and modification After connecting the MRTI to the first telephone line dial into that line from another Touch Code telephone from the second line If you are programming an L1158 multiline the line 1 should be the one connected to the phone line in order to do the parameters modification After the telephone number of the MRTI is dialed but before ring begins depress the gray test button located on the OTX processor board repeatedly until test 9 is indicated allowing the MRTI to access the line completing the audio path from the test phone through the switched network local PBX or PSTN to the MRTI It requires one second of time after test 9 is selected before the telephone line is actually seized Any one of the above three mentioned sources will work As soon as the MRTI detects the first Touch Code digit it will disable the other input ports Depress the gray test button located on the OTX processor board repeatedly until 9 is indicated on the LED display This will set the MRTI to receive Touch Code digits from
134. ory receive volume at the knee of compression and no gt more Excessive input sensitivity or too High an adjustment of the receive line input level potentiometor will result in increase effective line noise and or hum possibly causing improper operation of 16 cross lock out VOX feature lt A During final tests a check should be made by setting up the MRTI for Test 5 refer to System Self Tests section of MRTI Manual and ascertain the decimal point is extinguished when not receiving a mobile signal and is illuminated with the presence of receive audio MSR 2000 Series Installation to these model stations require the use of the Motorola supplied interface option kits Model it C719AC SP for Repeater l stallation Model C719AD SP for Base Station Installation Installation instructions are supplied with the kits MSF 5000 Series Base Repeater Stations Installation to these model stations require the use of the Motorola supplied Model C719 AB SP phone patch interface kit Installation instructions are supplied with the kits 26 2 M CM ABBREVIATED MOBILE COMMAND CHART Note All multidigit control functions must be entered with a maximum of 1 second interdigit time STANDARD MRTI access telephone line if release telephone line redial last number called overrides line busy
135. other option Example P9A on the ORCTX board In this case the KSAX module mounts on the 4 40 standoffs on the top cover inside directly above and parallel to the RLM 3 board with the earth ground and telephone cables leaving the board toward the rear panel Connections are as follows Screw Terminal Connects To earth ground earth ground lug inside rear panel A black lead on RJ12C cable Al yellow lead on RJ12C cable T green lead on RJ12C cable R red lead on RJ12C cable 1 tip on RLM 3 R1 R ring on RLM 3 The earth ground and telephone connections should be routed away from all other cables and circuit boards The cord should be tie wrapped to the RLM RIMX earth ground wire P151 Connections provide 2 amp dry relay contacts for telephone applications where the KSAX module provides an isolated multi purpose relay operation on phone patch access P151 Pin Relay Contact normally closed normally open keyed blank common PC N KEY TELEPHONE SYSTEM ANNUNCIATOR Model KSAX 06211983 2 52 EARTH GND 1 1 1 R R1 T 4 5V 12V lt PBO 4 2 4 2 4784 BLANK 5 4 BLANK 3 6 GNO lt Alternate output P151 note 1 PI59 Alternate Input NOTES 1 11 12 51 52 are deleted when 151 installed 2 Capacitors are In mfd resistors ore in ohms 06201983 3 Indicates screw terminal connection IAI PARTS LIST KSAX KEY SYST
136. pon entry of a N command n 3 9 and reverts control back to the base station front panel switch when the patch disconnect signal is received The revert function also occurs when the N command is received allowing the revert function to occur without dropping the telephone line party The command functions are 3 sub fleet selection 1 2 5 tt 3 6 4 tt tt ff 5 8 6 7 N returns control to base station switch where 3 9 if returns control to base station switch and disconnects telephone party Installation The ORCTX 2 module plugs into P9 on the OTX board 9 is repeated on the ORCTX board to allow access to the P9 functions by other options The fleet subfleet control cable connecting to P122 on the ORCTX board leaves the patch chassis through the large option slot on the rear of the patch chassis The snub bushing provided on the cable slides into the slot affording strain relief Refer to the INSTALLATION MANUAL for specific base station interface details L 3 Option E383 TDN6901 Motrar Fleet or Subfleet Control from Mobile Module Model ORCTX 3 1 of 4 Format Operators Instructions The ORCTX 3 module allows the mobile operator to remotely control the fleet subfleet switches on the base station For example by entering the 3 control sequence you effectively press the A button on the radio front panel You now have control of the radio fleet
137. pplicable to system requirements Refer to the OTX Switch Settings section in the MRTI Instruction Manual and then go to the Level Setting section Page 23 r I KW gS ESE ed Ez WE i 5137 89 17 0 wsiv3d3 wux31J wwvgov id Ory738v 2wyasLiNt 1209 worst qam3JA Sv 1TnVi3q INDO ARTI sum lt awnow Hlava 6 sissvHo 4 09 7090 2 3 LEE 2 101 4 ms Fonny ol 2 45701 SISSYHI Vans sy ONISNOR walw3aday dec a gt 1 m fo avioon QNIN yej 1 ONL yaw SISSVHD NI 51915 i USO NE 30 18 lt A O1 9S1aow 1 4 3 sv suw I PSY 20301 I JS30DBY WO J WIGYD 7 04114406 savo yas 103d 4019 SISSYWHD N 50195 21907 4 0 12310 2 _IDBANNODYALNI ABWTNANV 02179005 LIINNODISINI AWOLVIAGNOD I110wW aariddn 203 SNVAL N onid mym 9St17 091354 T1600 Series Remote Interfacing In this mode of operation the MRTI normally operates in the Enhanced VOX Simplex Mode The MRTI must be equipped with the E375 TDN6893 Enhanced VOX Option Receiver audio
138. r reverse burst disable relay output pin 4 yel monitor return relay output pin 5 grn PTT ground return relay output pin 6 blu receiver carrier indicator logic input pin 7 vio receiver audio return linear input pin 8 gry receiver audio high linear input pin 9 wht PTT and PTT sense relay output pin 10 blk receive PL detect logic input pin 11 tan transmit audio return linear output pin 12 pnk transmit audio high linear output Pil optional functions pin 1 brn auxiliary receiver audio low linear input pin 2 red auxiliary receiver audio high linear input pin 3 org patch inhibit logic input pin amp yel aux receiver carrier detect logic input p13 power supply input pin 1 black d c negative 2 red blk d c positive 10 5 1 input pin 3 black a c input 18 vac nominal INPUT OUTPUT SPECIFICATIONS The RIMX contains the lightning protected logic and linear input output signal circuits and the power supply for the MRTI With the exception of the receiver carrier indicator logic input all logic level inputs are protected 5 volt CMOS Schmitt trigger type and will accept input logic hi level of 3 5 volts and a maximum logic lo level of 1 5 volts The carrier indicator logic input has an adjustable switching threshold with a range of 03 volts to 11 7 volts with a maximum hysteresis of 0 5 volts at the 6 volt threshold level This input also accepts logic high levels in excess of 100 volts The linear audio inputs
139. requirements in the following ranges Frequency 4 per second to every 2 5 seconds Duration 15 milliseconds to 100 milliseconds Installation The frequency is stored as a two digit number at locations 54 55 Determine the number of 25 millisecond periods in the required frequency For example if a frequency of 1 second is desired the numbers would be 40 Install them at locations 54 55 as described under Option 155 6908 Parameter Modification Procedure The duration is stored as a two digit number at locations 52 53 Determine the number of 5 millisecond periods in the required duration For example if a duration of 40 milliseconds was required the numbers would be 08 Install them at locations 52 53 as described under Option E155 TDN6908 Parameter Modification Procedure Parameter 52 53 Two digit number of 5 millisecond periods in the signal search sample duration 54 55 Two digit number of 25 millisecond periods in the signal search frequency When properly stored check for proper operation V Comprehensive Toll Restrictions Description Up to 4 different prefixes of up to 4 digits may be restricted Additionally up to 2 numbers or prefixes of up to 9 digits may specifically be allowed even though they contain a restricted prefix such as 1411 for information etc When a number is determined to be restricted and not stored as an allowed number the MRTI disconnects the phone line Installation
140. rrected 5 The telephone company may make changes in its communications facilities equipment operations or procedures where such Page 6 action is reasonably required in the operation of its business and is not inconsistent with FCC rules and regulations If such changes can be reasonably expected to render any customer s terminal equipment incompatible with telephone company communications facilities or require modification or alteration of such terminal equipment or otherwise materially affect its use or performance the customer shall be given adequate notice in writing to allow the customer an opportunity to maintain uninterrupted service 6 It is required by FCC regulations that repair of the Model RLM 3 shall be accomplished only by the manufacturer or by their authorized agent 7 All Models RLM 3 shipped in equipment bearing the appropriate FCC registration label are equipped with plugs that mate with USOC type RJ11C interface connectors supplied by the telephone company 8 The FCC registration number for the IAI Model RLM 3 interface circuit card is BC288J 68921 VP N The ringer equivalance is 0 3b WARNING This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio communications It has been tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15
141. s off DPL SW5 on SW6 off OTX Switch Settings Set the OTX switches as follows SW1 section 3 on SW1 section 8 off SW2 section 1 off All other switches are set as applicable to system requirements Refer to the OTX Switch Settings section in the MRTI Instruction Manual and then go to the Level Setting section Notes 1 MAXAR Quadrature Detector Adjustment can cause receiver response time problems especially in DPL systems This can adversely affect MRTI operation especially in the Signal Search mode The following procedure will ensure the shortest possible receiver PL DPL response time and is the procedure currently being used on all MAXAR MOXY and MAXAR 80 radios being shipped from the factory a Transmit into a 50 ohm load at 13 8v b Note meter 2 Quadrature output using a high impedance DVM may be necessary to measure on the radio circuit board if the meter 2 wire was used in the MRTI installation Dekey the radio Inject a 10 7000mhz signal into the I F of the MAXAR radio e Adjust the Quadrature coil L18 or L23 for a meter 2 reading as measured in step 2 plus or minus 0 1 volts DC ao This procedure reduces or eliminates the pulse to the PL DPL deck caused by the difference of Quadrature voltage between transmitting and receiving an on frequency signal Note that a mobile transmitting off frequency can cause the same problem 2 Repeater transmit turn off delay in repeater control station installati
142. s present Yes No possibilities 1 Check pin 2 of on the OTX board for presence of the telephone audio 2 E375 TDN6893A enhanced VOX module or E376 TDN6894A full duplex module is present check for output of module audio at Pin 7 pf Pl on the OTX board 3 If E375 TDN6893A or E376TDN6894A is present check for logic lo at Pin 1 of Pl on the OTX board SNB on 4 If E375 TDN6893A is present check for logic lo at pin 2 of P2 on the OTX board sample VOX 5 If E375 TDN6893A and E376 TDN6894A are not present check for telephone line audio at Pin 7 of ICA correct as applicable Page 38 Activate test 7 Dial the telephone number of the MRTI from another phone and phone line to allow the MRTI to see ringing Does the decimal point on the LED flash during ringing to indicate processor recognition of ring Yes No possibilities 1 Measure between tip and ring connectors on the RLM board for presence of ring voltage 60 100 VAC 2 The off hook LED normally glows at reduced brightness duty cycle of ring signal during ring Check off hook LED 3 With high impedance scope probe check header Pin 3 for square waves exceeding 2 6 volts peak during ringing 4 Scope Pin 2 of IC21 the OTX board for presence of square waves during land line ringing Does the carrier detect LED on the RIMX light when the station is keyed from the local microphone ind
143. s until the telephone is released Now refer to the General Description section for further instructions and discussion of optional equipment Half Duplex Mode In this mode the MRTI is installed at your radio repeater site To access the telephone line connect press the button for about a half second When dial tone is heard dial the telephone Page 2 number stretching the first digit for about a half second in order to allow the MRTI to detect your transmitter signal You should follow the telephone number with another This second tells the MRTI that you are finished with telephone number signalling If you omit this the MRTI will assume you are finished six seconds after the last digit is entered and will then open the voice path to the telephone line When the called party answers you may talk to them in the same manner as you would to your base station operator or another mobile except that you will be able to interrupt the telephone line party but he cannot interrupt you and be heard Each time you finish speaking and release your microphone button the MRTI will send a short beep tone to the telephone party to inform them that you are finished speaking At the end of the telephone conversation press the button for about a half second to release hang up the telephone line The MRTI will confirm release with a series of short beeps Full Duplex Mode In this mode the MRTI is installed at your radio repeater site
144. shed with telephone line signalling you omit this the MRTI will assume that you are finished six seconds after the last digit has been entered and will then open the voice path to the telephone line When the called party answers you cannot interrupt and be heard until they finish speaking When they finish speaking you may then talk to the telephone line party In order to allow time for you to answer the MRTI sends an attention getting ticking sound to the called party which will disappear after you first reply When you finish speaking he will hear a short beep tone You should inform the telephone line party not to speak to you until he hears the beep go ahead tone It is suggested that this be a short concise statement such as when you hear the beep it is your turn to talk At the end of the conversation press the button to release hang up the telephone line The MRTI will confirm release with a series of short beeps Network Signalling When you dial a telephone number that is busy or make a dialing mistake and get the fast busy signal the MRTI will determine the repetitive signalling condition and will allow you to hear a few seconds of the telephone network signalling Then when the MRTI interrupts the signalling you may respond with the button to release the telephone line The MRTI will continue to alternate between two seconds of transmitting the repetitive signalling and five seconds of awaiting mobile command
145. splayed 8 To close and store the new parameter dial To change parameters 23 through 29 to 9876543 1 Using the test button on the OTX board select test 9 2 Dial 1490 on the Touch Code encoder 3 Dial 23 on the Touch Code encoder the old parameter in 23 will be displayed 4 Dial 9876543 After each digit is entered the old parameter at the next location will be displayed 5 Dial to close these locations Display will blank 6 Dial 235 to open and check the numbers just input will be displayed 7 Dial The numbers entered will be displayed 8 Dial to close and store the new parameters 2 In certain special cases it is necessary to store or and in some cases 4th column digits in a parameter location i e as a digit of a Touch Code selective signalling unit code number The procedure is as follows 1 In the parameter entry routine obtain the closed parameter condition indicated by a blank display 2 Dial then the parameter location number 3 Now dial either the or to be stored in that location The display will step to and display the next parameter location 4 Dial f to close the location The display will blank 5 To check the location in which the or was entered dial the parameter location number then dial The display will be blank if was entered into that location or a blank and a decimal point i
146. ss allowing connection or disconnection of the MRTI without affecting normal repeater audio levels PL Stripping transmit PL disable a relay closure is provided This feature is on off controllable by a mobile command and may be switch programmed to operate on access Release always resets this function Monitor a relay closure is provided to disable receiver PL prior to ring signalling in applications where receiver audio VOX is used to detect mobile activity as discussed previously monitor also operates during standard ring signalling to mobiles Auxiliary Receiver logic level and audio VOX is provided for use in systems requiring a separate monitor receiver to monitor the channel prior to access ring or selective signalling Page 11 SIGNAL SEARCH SIMPLEX Simplex base station Simplex mobiles This mode is used when the MRTI interfaces the telephone line to a standard Simplex base station When the telephone line is accessed for land line and mobile conversation the base station is keyed and taken down for short mobile carrier sampling intervals typically 20 milliseconds in duration every half second Optional programming can select sample durations from 15 to 100 milliseconds at a sample rate of one every 250 milliseconds to one every 2 5 seconds When mobile carrier is detected the transmitter is held down for an additional 350 milliseconds for receiver PL detection If the PL signal is detected the transmitt
147. tablished on the same telephone line used by the MRTI the attendant dials on his Touch Code telephone or encoder The MRTI will access the line and respond with a beep The attendant then sends the appropriate numbers for selective signalling After monitoring the channel the MRTI sends the selective tones and then leaves the telephone line disconnects When the signalled mobile responds by accessing the MRTI the conversation can begin 3 Mobile Caller Revertive A mobile can selectively signal another mobile using the revertive feature of the mobile dials the code and the appropriate numbers of the desired unit After testing for channel activity the will send the Selective Signalling Sequence Installation If the ROM containing the selective signalling firmware is being field installed carefully insert the ROM in its designated socket ensuring that the notch is oriented as shown on the OTX board layout The ROM containing selective signalling will be marked on the gummed label with the letters SS It may also be H 1 combined with other firmware options and in such cases there will be the appropriate additional markings on the label The Multi function Utilities Option will be designated with the letters UT and the Auto Dial Option will be designated with the letters AD PARAMETER 29 30 97 98 31 32 FUNCTION Time allowed for mobile to answer land line caller befor
148. tching the duration of the first digit for about a second to enable the MRTI to detect your transmitter signal You should follow the telephone number with another This second tells the MRTI that you are finished with telephone line signalling If you omit this the MRTI will assume you are finished six seconds after the last digit is entered and will then open the voice path to the telephone line When the called party answers you may converse in the same manner as with the base station operator You may interrupt the telephone party but they cannot interrupt you and be heard Each time you push your microphone button you should pause for about a half second before you begin speaking in order to allow the MRTI to detect your transmitter signal This will eliminate lost words to the telephone line party When you release your microphone button the telephone party will hear a short beep to tell him when he may speak and be heard by you At the end of the conversation push the button on your encoder stretching the duration for about a second This will disconnect the telephone line and the MRTI will confirm discohnect back to you with a series of short beeps This covers the basic operation of the signal search mode Optional control signalling should be handled in the same manner always stretching the first control digit in order to be recognized by the MRTI Many hand held portable radios are equipped with Touch Code encoders that w
149. te test 1 refer to Description of Tests Section 6 of this manual for details Does the MRTI respond to test and reset buttons Yes No Processor not running possibilities Carefully check that program ROM s and address prom are present inserted in their sockets properly and are of the same software series number and letter marked on ROMs 2 Check that processor IC10 is properly inserted and seated in its socket 3 Check that DTMF decoder IC20 is properly inserted and seated in its socket IC20 generates the clock signal for 0 4 Check for presence of clock signal 895 KHZ at pin 39 of IC10 with X10 lo cap probe of oscilloscope 5 Check for presence of 5 millisec interrupt pulses at R49 test loop with X10 lo cap probe of oscilloscope m correct as applicable Does test 1 lite the PTT and PTT sense LEDs Yes No possibilities RIMX to OTX cable defective not seated etc check for logic low at Pin 13 IC7 on the RIMX board If low and PTT LED not on check IC 7 LED etc If logic hi suspect OTX board Connector etc correct as applicable Page 32 Does Test 1 key the transmitter Yes No possibilities Check that 012 radio cable connector is properly connected to 2 on the RIMX Check connection of white PTT and green PTT return wires to radio PTT circuits With the white PTT wire temporarily disconnected from the radio me
150. ternal devices whenever the security code has been entered by the mobile user One example of such an application would be enabling or disabling a repeater in multiple repeater site systems D 6 VII VIII cont d Provision has been made in the MRTI through control of the monitor relay in systems where the monitor relay is necessary for normal MRTI operation This function should not be used in installations where receive audio is used as the mobile carrier indicator that is SWl Section 3 is off See OTX Switch Settings Installation Refer to VIII Parameter 100 Note 1 The security code flag is set whenever the security code has been entered by the mobile user either prior or after accessing the Security Executive Override Code in this section of this manual The security code flag is reset after every disconnect Land line Priority with Selective Signalling Applicable with single line Model 11159 only With Selective Signalling Option installed Certain telephone and PBX systems generate only a short fixed length D T M F burst In order to reduce the burst length required from the caller telephone provision has been made to give the land line port priority example ignore the other input ports and look at only the land line port during entry of selective signalling digits rather than time sharing the DTMF decoder in the MRTI Enabling this feature allows
151. the shortest possible receiver PL DPL response time and is the procedure currently being used on all MAXAR MOXY and MAXAR 80 radios being shipped from the factory a Transmit into a 50 ohm load at 13 8v b Note meter 2 Quadrature output using a high impedance DVM may be necessary to measure on the radio circuit board if the meter 2 wire was used in the MRTI installation Dekey the radio Inject a 10 7000mhz signal into the I F of the MAXAR radio e Adjust the Quadrature coil L18 or L23 for a meter 2 reading as measured in step 2 plus or minus 0 1 volts DC e This procedure reduces or eliminates the pulse to the PL DPL deck caused by the difference of Quadrature voltage between transmitting and receiving an on frequency signal Note that a mobile transmitting off frequency can cause the same problem 2 Repeater transmit turn off delay in repeater control station installations When the MRTI Is being installed in a control station controlling a repeater it is necessary to ensure that the repeater does not stay on the air after the control station unkeys If the MRTI detects carrier and PL DPL if applicable after unkeying the control station it will erroneously be seen as a mobile transmission In systems that require PL DPL and retransmit not generate the PL DPL signal such as most community repeaters no problem will be encountered since carrier only will not be seen as a system mobile Some repeater stations have
152. tion SW2 on off for carrier toward supply SW4 PL detect input on for PL detect toward ground logic direction SWl on off for PL detect toward supply SWS RX audio lvl select on selects low level input see below off selects high level input SW6 RX audio de emphasis on selects no de emphasis select see below off selects 6db octave de emphasis Receiver audio level requirements level from receiver Receive Audio Source 885 586 100012 tone deviated 4khz high level disc detector off off approx 5db 45 vac low level disc detector on off approx 20db 08 vac high level speaker audio off approx 104 2 5 vac low level speaker audio on on approx 5db 45 vac Examples of low level detector audio are MAXAR 80 and FLEXAR base station receivers High level discriminator detector audio from MICOR base repeater rl DISC INPUT or MITREK base buffered detector audio OPTIONAL INPUTS Auxiliary Receiver Audio This input is not level programmable and requires a nominal input level of Odb 78 vac Auxiliary Receiver Carrier Indicator Logic input Alternate for above Used in applications requiring monitor receivers Logic low carrier Patch Inhibit Logic input A logic low disables mobile and land line signalling Page 16 RIMX INPUT OUTPUT INTERFACE 2 color function I or O pin 1 brn TX PL disable stripping relay output pin 2 red TX PL disable return relay output pin 3 org monitor o
153. tored check for proper operation Example to install DE pause ABC12 SID on every 15 minutes if station ptt occurred in that time and after every phone patch the parameters would be set as follows 01 1 07 1 13 0 19 don t care 02 4 08 1 14 1 20 don t care 03 1 09 1 15 0 21 7 04 5 10 2 16 2 05 3 11 1 17 0 06 7 12 3 1820 III Security Executive Override Code The security code may be used to l Access patch from a mobile even though SWl Section 6 on the OTX board is set for no mobile access 2 Override 3 min timer with even if 592 Section 4 is off 3 Override toll restrictions A If so programmed selective mobile signalling from an attendant and or land line caller can require the security code as a prefix requires Selective Signalling option E380 TDN6898 5 If so programmed attendant and or land line caller direct access can require the security code as a prefix Refer to Section D XIV and XV 6 Operate external devices for example enabling a repeater whenever the security code flag is set the monitor relay is used as the control relay Refer to Section D VII Control of External Devices using the Security Code The security code reception flag is reset during every disconnect The normal procedure for the priviledged mobile is to dial the security code prior to accessing the patch 0 N where N is the stored security code This
154. touch code enter where the revert is desired the revert to Touch Code mode must be in effect when entering revert code See controlling land line signalling mode below After a revert command additional s only cause additional pauses EXAMPLE 7 87 1901 5551212 would store in location 7 and when autodialed would pulse dial 87 possible accessing Touch Code responsive line pause 1 25 seconds then Touch Code dial 1 901 pause 2 5 seconds then Touch Code dial 555 1212 When the mixed mode is in effect revert to Touch Code can also be used when manual dialing numbers The revert is caused by a and 2 second pause followed by the required Touch Code digits Manual Entry Example 1 dial accesses MRTI 2 dial 87 pulse dials 87 then reverts 3 pause 2 seconds or more defines revert command 4 dial 5551212 Touch Code dials 5551212 The redial command will redial the last sequence including the revert Any time while in the auto dial entry mode you may reset to start over by dialing a as long as it is not preceded by a is the store command After the initial 0 command 1 minute is allowed to complete the auto dial entry If the entry does not conform to the proper format disconnect beeps will be heard when the mobile unkeys 3 Clearing an Auto Dial Location Entering a new auto dial number at a location will automatically clear the old number To empty a location procee
155. ts PL detect used with method 1 is connected to the base station receiver PL decoder output In carrier squelch only systems this input is switch disabled to provide a continuous PL indication Monitor output relay closure connects to the receiver PL disable input necessary only when using methods 2 above This output is used to monitor the channel prior to ring signalling and operates during standard ring signalling to mobiles MRTI PTT CONNECTS TO MIKE PTT MRTI transmit audio is balanced to provide hum and noise immunity and connects to the mike hi and mike lo inputs The MRTI output is virtually transparent to circuit impedances of 600 ohms or less Jumpers that keep the microphone or desk set handsets hot must be cut PL stripping transmit PL disable A relay closure is provided This feature is on off controllable by a mobile command and may be switch programmed to operate on access Release always resets this function Page 14 MRTI Grounding and Lightning Protection To provide ground reference for the logic inputs to the MRTI and to enable the extensive lightning and surge protection in the MRTI the MRTI must be ground bonded to the associated radio equipment through the supplied 12 wire or larger by connection to the bolt marked EARTH GROUND on the MRTI rear panel and to the radio equipment frame The connection to the radio frame should be to bright metal that is a part of the radio proper such as int
156. va Z N39 ANOL IN39 3NOl vil sil si 2 i s zi vij sil 21 s 1 2621 191 3No1 imdino IN39 x vi sy zi sj 2 ela mb v X lt aja n jo G x 512 zl x z x z x z alo 4121 amp lt SIE Sna_o a v hin d lli 114 x 4 xnv a z lt IP 0221 2 2 z xu E gjg 2 z 4300930 5 ula 3NOl 4 H2NOL z 5 S 322V T a j i IV2 1V1 130 9NIH ty 2 z z 5 15 2 4 212 21 NS 8 OOH 330 wa wg 9Vd IVId N3HM LIBIHNI 898 HO LVd ONY H3AI323M 10 OlQVM 01 31892 AUVTIIXNV 01 31892 SNIOIAN3S 3NI1 3NOHd 3131 HOd SLOTS SISSVHD JIN 5814 30 100 30116 531892 310N 2051 Nid ONNld gi f 0399N 1d 03433 SNId 30ISLNO air 5014 ON Nid 14 0 Nid If 43990114 03A33 34V SNid 30ISLNO If quvoa 2 21 SERE doped dae ON Nid A eir ein 0399n1d J3A3X 34V NOLL23 108d NOLLO3LOHd ONINLH9I1 ONINLH9I1 XLO MH e xdv f SNOILdO 01 2 0332018 SI 8 Nid A34 2 EF 0332018 SI Nid A34 ZI 6 LINONIO 318V2 NOLLdO OL 6d zi SN 1d 1604 1 NidSd ON Nid 0399N1d MIY MNOLINOW 1S31 9 HLHV3 J3A3X 3NV SNid 3015100 9f WVves
157. vig LIFINNOIAFILNI ILYW SNid 3015100 30 SYSTEM TROUBLESHOOTING FLOW CHART Remove the modular phone line plug on the OTX phone line cable from the RJllc phone company jack Connect a touch tone or rotary as applicable standard telephone into the same jack used by the MRTI originate and receive several calls to test the phone line central office setup etc verifying the functionality and type of phone line Does Substitute Phone operate properly Yes No Correct as applicable PS LED on RIMX board on Yes No Is there 12 to 24 VDC across C9 Yes No Remove power and disconnect J6 from RIMX P6 Restore Power Possibilities No AC power to T3 Defective T3 cable or connector J13 Fl on RIMX Blown correct as applicable PS LED on Yes No Remove power Remove all option boards and recheck Determine which board is drawing excessive current Determine which supply is def ective by measuring 5 Bt 6 correct as applicable correct as applicable Carefully check switch setting on RIMX against installation notes and or RIMX radio interface module switch settings in this manual or installation guide as applicable Page 31 EE Raz Are RIMX switches correct Yes No correct and retest Activa
158. y 1 410 amplifies the signal from the nonaccessed switch network and IC21E detects the associated logic level Transmitter Summing Amplifier Signals from the various sources are summed in amplifier Ic41D and sent to the RIMX Touch Code Decoder Touch code decoder IC20 is time shared on the various inputs The processor selects an input for the decoder via IC37 and reads the results Mic non buss related circuits A Display decoder IG18 decodes and drives the LED display in response to processor commands B Programming Switches Switch bank 541 is continuously available to the processor for reading while switch bank SW2 is multiplexed with display information and tone generator amplitude signals Therefore to read SW2 the processor reconfigures the associated lines as inputs reads the switches and restores the line as outputs C Reset and test switches These switches cause interrupts to the processor and the processor responds as required System reset is not generated by the reset button System Reset Circuitry Power up being discharged causes processor IC10 to be initially reset Upon charging the reset is removed IF the unregulated supply on the RIMX drops below 15 volts power fail ICA3A 10430 cause NMI non maskable interrupt to occur first causing the processor to go into a Page 27 non volatile RAM protection routine Then system reset is exerted When the system is operating normal
159. ynchronous rectifier fashion driving optical isolator in the direction to cancel the audio that has been phase shifted by the reactance of the switched network appearing at ICAA Audio from the is also fed to buffer which drives comparator IC2B IC2B drives audio gate IC3C in synchronous rectifier fashion when the amplitude of audio from the MRTI is adequate This voltage drives VR2 which varies the amplitude of the signal driving the switched network in a direction to cause cancellation of the signal at ICA pin 1 The result is a high degree of transhybrid isolation of the signal at Jl pin 8 This resultant signal is high pass filtered to eliminate hum and rumble and compressed by IC6 5 and 4 The processor gates this audio path on and off via Ql FDMX LAYOUT R3 Re ai R44 4 TT c3 E gs 87 89 RII RI6 RI7 RID E 414190 fe R8 RIO RI2 RI4 02 25100181 R34 R31 R29 R28 R26 R24 R22 fue TR j raa R27 R25 TUE De amp Md c NOTE CIRCUIT BOARD IS SHOWN FROM COMPONENT SIDE MRTI SYSTEM Model FOMX NOTES CAPACITOR VALUE IN MFD UNLESS STATED OTHERWISE 2 RESISTOR 2 OHMS 3 DIODES 1 914 4 0115 2N4403 5 AND 12 ARE NOT SHOWN 020585 M 10011982 SNA ABOVE SHOWN FOR REF ONLY IAI PARTS LIST EDMX FULL DUPLEX MODULE REFEREN

L1158 and L1159 MRTI Service Manual

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