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M3TR I-Level.book

1. a GHL pE SA a a rat A ee a E H aae Leet ae as el d pme POR Ane TR 3 r TAF Pip E E fe ICN 4G A 23 1000 R D0894 20004 A 01 1 4 Turn the tactical radio upside down and put it on the work table the lower cover should now be accessible Figure 5 3 5 Undo the nine captive socket head screws at the lower cover by using a socket head screw key 6 Lift the lower cover carefully off Figure 5 3 a a a a a ee a er ee Service Manual I Level 6124 8346 82 04 53 R amp S MR300xH U 5 4 Figure 5 3 Removing the Lower Cover Disassemble Procedures i am G d w ei TT on eT ce ee a gut i ia H i i a g a 3 p 2 BE pA Ei eS aa I ed vud B ICN 4G A 231000 R D0894 20005 A 01 1 Service Manual I Level 6124 8346 82 04 5 2 Replacing Individual Modules Replace individual modules according to Radio Controller Radio Frequency Unit Antenna Tuning Unit HF VHF Power Amplifier VHF UHF Power Amplifier Power Supply Front Panel Battery Sealing Cords sect sect sect sect sect sect sect sect sect 5 2 1 Radio Controller Change 5 2 2 RF Unit Change 5 2 3 Antenna Tuning Unit Change 5 2 4 HF VHF Power Amplifier Change 5 2 5 VHF UHF Power Amplifier Change 5 2 6 Power Supply Change 5 2 7 Front Panel Change 5 2 8 Radio Controller B
2. eE aR a a a ee a ee 4 44 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U 4 5 16 IF Recjection of Receiver in Fix Frequency Mode IF Recjection of Receiver in Fix Frequency Mode 1 Carry out the test steps Table 4 20 Table 4 20 IF Recjection of Receiver in Fix Frequency Mode Fault Detection No 1 Preparations Nominal value Activity fault elimination 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 Connect signal generator at X1 ANT 1 4 Connect audio analyzer at X4 B AUDIO_RX 2 IF Rejection 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency variable see below Modulation J3E Preamplifier OFF AGC OFF MGC 15 dB R amp S MR300xH 18 dB R amp S MR300xU Volume maximum 2 2 By using the signal generator at X1 ANT of radio feed in an RF signal with the following parameters Frequency 1 983 MHz 5 MHz 12 MHz and 29 5 MHz Signal level 110 dBm 2 3 By using the audio analyzer measure audio level Laudio and note 2 4 Change signal generator frequency to 70 455 MHz 1St IF Increase IF lev el Lg until audio level Laudio Measured in step 2 2 is reached again Note IF level Lo 2 5 Calculate IF rejection as follows IF ejection 110 dB Lo Possible
3. Frequency 716 910 MHz 1 IF 5 17 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 5 15 Make a note of the signal level Lo 5 18 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 5 19 At the radio change the following parameter Frequency fo 510 MHz 5 20 At the signal generator set the following parameters Frequency 510 MHz Signal level 110 dBm 5 21 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 5 22 At the signal generator change the following parameter Frequency 790 910 MHz 1 IF 5 23 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 5 21 Make a note of the signal level Lo 5 24 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 5 25 Switch off test equipment and disconnect radio from test setup 5 26 If no errors have been detected during
4. Frequency fo 109 MHz 3 14 At the signal generator set the following parameters Frequency 109 MHz Signal level 110 dBm 3 15 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 16 At the signal generator change the following parameter Frequency 389 910 MHz 1 IF 3 17 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 3 15 Make a note of the signal level Lo 3 18 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 3 19 At the radio change the following parameter Frequency fo 109 MHz 3 20 At the signal generator set the following parameters Frequency 109 MHz Signal level 110 dBm 3 21 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 22 At the signal generator change the following parameter Frequency 109 910 MHz 2nd IF 3 23 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 3 21 Mak
5. Frequency 60 125 MHz 4 10 By using the signal generator at input 1 of the power combiner feed in an RF signal with the following parameters Frequency 60 125 MHz Modulation FM Receive input level RF 1 variable 4 11 By using the audio analyzer at X4 B check AF signal S N N with weighting 12 dB SINAD filter acc to CCITT If necessary vary receive input level RF1 until the value of 12 dB SINAD is reached Make a note of the set receive input level RF 1 4 12 By using the signal generator at input 2 of the power combiner feed in an RF signal with the following parameters Frequency 60 150 MHz Modulation unmodulated Receive input level RF2 variable 4 13 By using the audio analyzer at X4 B check AF signal S N N with weighting 6 dB SINAD filter acc to CCITT If necessary increase receive input level RF2 until the value is reduced to 6 dB SINAD Make a note of the set receive input level RF2 a See Se SS ES Se a ee a ee ee ee ee Se ee ae ees Service Manual I Level 6124 8346 82 04 4 43 R amp S MR300xH U Frequency Response of Receiver in Fix Frequency Mode a ee a ee ee ee ee a No Activity fault elimination Nominal value 4 14 From the noted RF levels calculate the adjacent channel rejection ACR as gt 60 dB follows RF1 RF2 ACR Possible cause of fault Module RF unit A3 and or connected modules defective 4 15 At the radio
6. AL Loy Loo Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective 3 Blocking VHF Range a Sena SSS SS RS Se ee a a eS a a Se ae ace Service Manual I Level 6124 8346 82 04 4 73 R amp S MR300xH U 4 74 Blocking No Activity fault elimination Nominal value 3 1 At the radio change the following parameter Frequency fo 60 125 MHz 3 2 At the signal generator set the following parameters Frequency 60 125 MHz Signal level 1 mV EMF 3 3 Reduce the MGC value until an audio output level of 4 to 7 dBm is mea sured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF level Lo 3 4 By using a second signal generator at X1 ANT feed in a signal blocking signal with the following parameters Signal level 13 dBm Frequency offset 10 from fo 3 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio output AL lt 3 dB level Lp and calculate the level change as follows AL Loy Loz Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective 3 6 At the radio change the following parameter Frequency fo 107 9 MHz 3 7 At the signal generator set the following parameters Frequency 107 9 MHz Signal level 1 mV EMF 3
7. 2 4 At both radio and signal generator set the following receive frequencies in succession see below At signal generator set RF level 104 dBm at 11 237 MHZ By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 1 983 MHz 10 1 MHz 20 1 MHz 30 1 MHz 60 125 MHz 90 1 MHz 107 9 MHz 108 1 MHz 185 1 MHz 310 1 MHz 502 125 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive gt 10 dB SINAD 2 5 At the radio change the following setting Preamplifier ON 4 34 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Sensitivity of Receiver in Fix Frequency Mode No Activity fault elimination Nominal value 2 6 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 115 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 1 983 MHz 10 1 MHz 20 1 MHz 30 1 MHz 60 125 MHz 90 1 MHz 107 9 MHz 108 1 MHz 185 1 MHz 310 1 MHz 502 125 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 3 FM Mode 3 1 At the radio set the following Mode switch RX TX Pr
8. 2 22 At the signal generator set the following parameters Frequency 29 5 MHz Signal level 110 dBm 2 23 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value aa De ee a ei et ee eee 4 66 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 2 24 At the signal generator change the following parameter Frequency 170 410 MHz 1 IF 2 25 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level L at the signal generator until the audio level Lagi once again reaches the value acc to step 2 23 Make a note of the signal level Lo 2 26 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 3 Image Rejection VHF Range 3 1 At the radio change the following parameter Frequency fo 31 MHz 3 2 At the signal generator set the following parameters Frequency 31 MHz Signal level 110 dBm 3 3 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 4 At the signal generator change the following parameter Frequency 311 910 MHz 1 IF 3 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level
9. lt 3 dB level Loz and calculate the level change as follows AL Loy Loo Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 and or con nected modules defective 4 6 At the radio change the following parameter Frequency fo 200 1 MHz 4 7 At the signal generator set the following parameters Frequency 200 1 MHz Signal level 1 mV EMF 4 8 Reduce the MGC value until an audio output level of 4 to 7 dBm is mea sured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF level Lo 4 9 By using a second signal generator at X1 ANT feed in a signal blocking signal with the following parameters Signal level 13 dBm Frequency offset 10 from fo 4 10 By using the audio analyzer at X4 B AUDIO_RX measure the audio output AL lt 3 dB level Loz and calculate the level change as follows AL Loy Lo2 Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 and or con nected modules defective 4 11 Switch off test equipment and disconnect radio from test setup 4 12 If no errors have been detected during the tests described in this chapter troubleshooting can be regarded as completed For more detailed trouble shooting please contact Rohde amp Schwarz service personnel a Sena SSS Se SS Se E a ee a a Se see mare Service Manual I Level 6124 8346 82 04 4
10. 04 4 57 R amp S MR300xH U Crossmodulation SSS SS SS SS SS SS SS SS SS ee 4 5 22 Crossmodulation 1 Carry out the test steps Table 4 26 Table 4 26 Crossmodulation Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Crossmodulation 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 1 983 MHz Bandwidth 6 kHz Modulation A3E Preamplifier OFF AGC OFF MGC 74 dB 2 2 Connect signal generator at X1 ANT and feed in RF signal with the follow ing parameters Frequency 1 983 MHz Signal level 1 mV EMF Modulation A3E Modulation depth 60 2 3 Connect audio analyzer at X4 B AUDIO_RX At the audio analyzer set the following parameters RMS selective Bandwidth 100 Hz 2 4 Reduce MGC until an audio output level of 6 to 8 dBm is measured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF signal level value Lo 2 5 At the signal generator switch off modulation 2 6 By using a second signal generator at X1 ANT feed in an interfering signal with the following parameters Signal level 0 dBm Frequency offset 30 kHz Modulation A3E Modulation depth 60 a a 4 58 Service Manual l Level 6124 8346 82
11. 2 1 By using the audio analyzer at X4 B AUDIO_RX check frequency and sig nal voltage of output signal into 600 Q Possible cause of fault Module RF unit A3 radio controller A1 and or connected modules defec tive faudo 1 kHz 1 7 to 4 5 V R amp S MR 300xH 1 7 to 4 0 V R amp S MR 300xU 2 2 Disconnect signal generator from X1 ANT Battery Voltage VBATT of Audio Connector X4 3 1 By using the digital multimeter voltmeter at X4 E VBATT check operating voltage For this measurement the load at DC output VBATT X4 E is 150 Q Possible cause of fault Module power supply A5 radio controller A1 and or connected modules defective 24 VDC 5 Service Manual I Level 6124 8346 82 04 4 17 Activity fault elimination Battery Voltage VBATT of Data Connector X5 Nominal value By using the digital multimeter voltmeter at X5 20 Vent 7 check operating voltage For this measurement the load at DC output VBATT X5 20 is 150 Q Possible cause of fault Module power supply A5 radio controller A1 and or connected modules defective 24 VDC 5 Switch off test equipment and disconnect radio from test setup If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 4 HF V UHF Antenna Switch R amp S MR300xH U HF V UHF Antenna Switch 4 5 4 HF V UHF Antenna Swi
12. 20004 A 01 1 Undo the nine captive hexagon socket head screws at the upper cover by using a socket head screw key 2 5 mm eLift the upper cover carefully off Remove the RF unit sect 5 2 2 RF Unit Change C d Remove the Intermediate Plates 2 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U VHF UHF Power Amplifier Change The hybrid circuit has been coated with toxic heat conducting paste and therefore must not be touched without protection Should the necessity arise to touch the hy brid circuit e g in repairs be absolutely sure to wear rubber gloves After use dispose of the gloves in accordance with the relevant waste disposal regulations If in spite of all care you have got contaminated in any way wash the toxic material off immediately with soap and plenty of water BERYLLIUM some electronic power elements may have insulation made from beryllium oxide ceramics Such components are especially marked on the circuit documentation Please see the safety instructions for handling parts made from beryllium oxide ceramics Figure 5 17 Power Amplifier Undoing Screws ICN 4G A 231000 R D0894 10005 A 01 1 1 hexagon spacer bolts 2 hybrid circuit 3 screws E a ee ee ae ee 5 24 Service Manual I Level 6124 8346 82 04 e Atthe power amplifier undo the following screws e the seven hexagon spacer bolts and e the seven srews by using a socket wrench Avoid
13. 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 Figure 2 10 Figure 2 11 Figure 3 1 Figure 4 1 Figure 4 2 Figure 4 3 Figure 5 1 Figure 5 2 Figure 5 3 Figure 5 4 Figure 5 5 Figure 5 6 Figure 5 7 Figure 5 8 Figure 5 9 Figure 5 10 Figure 5 11 Figure 5 12 Figure 5 13 Figure 5 14 Figure 5 15 Figure 5 16 Figure 5 17 Figure 5 18 Figure 5 19 Figure 5 20 List of Figures Tactical Radio JOSIOIN sic scr denocensntesalevinasddceernexastbexdahesectecesinedecksiedqeSacesesienbeexveieieeszenteeaced A eee 2 2 MR 300xH U without Cover TOD cccccccccsccsseeeseeeeeeeteeeseeeeceeeaeeeteeeeeneetaeeseeseseeeaaeeeeetaneesaeeens 2 5 R amp S MR 300xH without Cover and RF Unit TOp ccc cccccccseeeeeeeeeeeeeeeeeeeeesseeeeeeseesaeeeaes 2 6 MR 300xH without ATU Cover RF Unit and Intermediate Plate Top ccececcseeeeeeeeees 2 MR 3000H U mod 02 03 without Cover Bottom ccccccceccccceeeeeeseeeeeeeeeeeeeeeeeeeseeeesaeeeeeaaes 2 8 Housing A9 Mod 02 TOD eenciysm ieie EE E i AE 2 9 Housing A9 Mod 03 TOD erscrironin aea a te E Eaa i EE REN E aE E E aai aia 2 10 Housing A9 Mod 02 and 03 BottOM cc ccccccececeeeceeeeseeeaeeeseeeeseeeseeesaeeeseeeseeesaeesaeeeaaes 2 11 Housing AQ Mod 02 and 03 Front ec ccccccececceeeeeeeeeeeeeeseeeseeeseeeeseeeseeesaeeeseeeseeeseeesaeeeaaes 2 12 Housing AQ Mod 02 REAM ccccccccscccsseeceeeceeeceeeaeeecaeccaeeeceesceesaeeseeeecaes
14. 8 Reduce the MGC value until an audio output level of 4 to 7 dBm is mea sured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF level Lo 3 9 By using a second signal generator at X1 ANT feed in a signal blocking signal with the following parameters Signal level 13 dBm Frequency offset 10 from fO 3 10 By using the audio analyzer at X4 B AUDIO_RX measure the audio output AL lt 3 dB level L 2 and calculate the level change as follows AL Loy Loo Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective 4 Only R amp S MR300xU Blocking UHF Range 4 1 At the radio change the following parameter Frequency fo 135 1 MHz Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Blocking No Activity fault elimination Nominal value 4 2 At the signal generator set the following parameters Frequency 135 1 MHz Signal level 1 mV EMF 4 3 Reduce the MGC value until an audio output level of 4 to 7 dBm is mea sured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF level Lo 4 4 By using a second signal generator at X1 ANT feed in a signal blocking signal with the following parameters Signal level 13 dBm Frequency offset 10 from fo 4 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio output AL
15. A41 1 6094 8050 03 190 Keyboard A42 1 6118 3352 02 200 Keyboard Support 1 1 6118 3423 00 210 Keyboard Support 2 1 6118 3430 00 220 Keyboard Support 3 1 6118 3446 00 230 DIN 912M3X10_A4 HINTE 3 6098 9016 00 240 DIN 137 A3 A2 Black 5 6098 9045 00 255 Retainer 1 6140 7057 00 265 Pressure Spring 1 6140 6621 00 270 1 4 Turn Lock 1 6126 4148 00 280 Knob 1 6126 4248 00 320 Drive Cord 25 0015 2085 00 330 PowerAmpl HF VHF A2 1 6099 0893 02 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U 7 2 Spare Parts Item No Designation Component no Quantity Ident no 331 Amplifier Board HF VHF A21 1 6099 0906 02 332 Harmonic Filter A22 1 6099 2009 02 333 Hybrid Ampl HF VHF A23 1 6118 3200 02 334 Isolation Foil 1 6099 2209 00 340 ATU 4 A10 1 6126 3341 02 350 Coilboard A102 1 6126 3535 02 360 Capacitor Board A101 1 6126 3441 02 385 Cover Sealing 2 6126 5380 00 395 Rubber Strip 1 6140 6780 00 405 Cover 2 6140 6644 02 410 Housing A9 1 6099 0658 03 430 Protective Cap 1 6094 9370 00 440 M2 5X3 DIN7985 CR BL 1 6086 0325 00 450 Ground Bolt X3 1 6094 8780 00 460 Nut for Gound Bolt 1 6094 8815 00 470 Cable W2 1 6094 7602 00 480 Cable W4 1 6094 7625 00 490 Sealing Ring 1 0071 8227 00 500 Erase Switch w Cable S1 1 6099 3205 00 510 Handle PTD 1 6099 1454 02 520 Screw 1 6121 9606 00 530 Audio Conne
16. Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 3 3 Make a note of the signal level Lo 3 6 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 3 7 At the radio change the following parameter Frequency fo 63 MHz 3 8 At the signal generator set the following parameters Frequency 63 MHz Signal level 110 dBm 3 9 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 10 At the signal generator change the following parameter Frequency 343 910 MHz 1 IF 3 11 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 3 9 Make a note of the signal level Lo es Se eee eS Se SS Se a ee ee a a Se eee aeeee Service Manual I Level 6124 8346 82 04 4 67 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 3 12 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 3 13 At the radio change the following parameter
17. Network Adapter comes up choose a network adapter if possibly more are available Figure 6 4 cc Se a eo Service Manual I Level 6124 8346 82 04 6 5 Figure 6 4 Select a network adapter Select a Network Adapter CANCEL ICN 4G A 23 1000 R D0894 20014 A 01 1 6 Open File Menu 7 Select Config File with shortcut F2 alternatively open it with button Open File 8 Select configuration file from the following dialog box Selection from the menu e g firmware R amp S MR300xH Figure 6 5 R amp S MR300xH U Load Software Procedures Figure 6 5 Select configuration file Select configuration file Select with double click FCPLAT software Version OF 37h Look in ECS PY CANCEL ICN 4G A 231000 R D0894 20015 A 01 1 9 Confirm with button Accept 10 Open Update Menu via Ethernet press shortcut F4 alternatively press Ethernet Button press ERASE Button red 11 Switch on R amp S MR300xH press ERASE Button red 12 On PC Display operation click on the indicated line click on Start Button a indication START b Update starts c indication ENDE 13 Update finishes 14 Disassemble the setup a Sena SS Se SS Se E a a a es E Service Manual I Level 6124 8346 82 04 6 7 R amp S MR300xH U Load Software Procedures SSS SS SSS SS SS SS SS SS Se Firmware Download via the Serial Interface DATA at the Front Performing 1 Switch off the R amp S R MR300xH 2 Switch on the
18. O AON E a eR a a a ee a ee ee 3 4 Service Manual I Level 6124 8346 82 04 The MR 300xH U is to be cabled as follows e ANT X1 connection of HF VHF antenna for R amp S MR 300xH or of VHF UHF antenna for R amp S MR 300xU e GPS X2 connection of GPS antenna e DATA X35 connection of data terminal e g laptop e AUDIO X4 connection of headset with PTT key e Ground connection of system ground for stationary use R amp S MR300xH U Maintenance 4 Maintenance 4 1 Test Equipment Tools and Software Equivalent test equipment may be used Special tools are not required Table 4 1 List of Test Equipment Item Test equipment required data Equipment recommended by Ordering code Rohde amp Schwarz 1 Power supply 24 VDC 5A R amp S NGB 32 117 7210 90 2 Digital multimeter 0 to 30 VDC 0 to 3 5 A R amp S UDL 35 1037 1807 02 3 Audio analyzer with internal generator 0 to R amp S UPA 3 0372 6014 03 20 kHz 4 Signal generator R amp S SMT 02 1039 2000 02 5 Communication analyzer R amp S CMTA 54 0834 0000 54 6 Load 50 0 500 W conventional workshop mod el 7 Vector signal generator R amp S SMIQB21 1125 5555 02 with unit for BER measurement R amp S SMIQ 02B 1125 5490 02 conventional workshop mod 8 Attenuators 6 dB and 20 dB el 9 Notch filter conventional workshop mod el 10 Immersion tank inside colour black good un conventional workshop mod derwater i
19. PC host computer 3 Start Update32 4 Open Config Menu 5 Select Com Port with shortcut F5 Select interface COM 1 or COM 2 Select speed 115 kBit 6 Select Config File with shortcut F2 alternatively open it with button Open File 7 Select configuration file from the following dialog box Selection from the menu e g firmware R amp S MR300xH Figure 6 6 Select configuration file Select configuration file Select with double click ACCEPT CANCEL ICN 4G A 231000 R D0894 20015 A 01 1 8 Confirm with button Accept 9 Open Update Menu via COM with shortcut F3 10 Switch on R amp S MR300xH 11 Update starts a ee a a a a a a ee i E a ae one oar See 6 8 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Load Software Procedures SSS SS SSS SS SS SS SS SS SS ee 12 Indication ENDE 13 Update finishes 14 Disassemble the setup CNR Operating System Download With one exception Firmware Download via the Rear Interface and via Ethernet Interface of the Docking Station at the Front on p 6 5 the CNR Operating System upload has to be per formed as it is described in section Firmware Download via the Serial Interface DATA at the Front on p 6 8 Software Download e download like Firmware e the only difference on the PC menu selection NOT firmware R amp S MR300xH BUT cnr R amp S MR300xV wahlen SECOM H SECOM V Configuration The SECOM H respectively SECOM V configuration for the R amp S M3TR
20. Preset switch MAN Submenu OPERATION TX Frequency variable see below Output power variable see below Modulation J3E Information displayed RF FRONT 2 4 At the radio set output power to 20 Wpep R amp S MR300xH or 10 Weep R amp S 20 Woep 1 dB MR300xU and set the following transmit frequencies in succession R amp S MR300xH Frequencies 10 Wpep 1 d R amp S MR300xU 1 983 MHz 10 1 MHz 20 1 MHz and 29 9 MHz R amp S MR300xH 25 1 MHz 42 1 MHz 70 1 MHz and 107 9 MHz R amp S MR300xU By using the communication analyzer check the output power at X1 for each frequency Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective a Sea aS SS ES a ee a a ae oe a ee Service Manual I Level 6124 8346 82 04 4 21 R amp S MR300xH U RF Power of Transmitter in Fix Frequency Mode 4 22 No Activity fault elimination Nominal value 2 5 At the radio set a transmit frequency of 1 983 MHz R amp S MR300xH or 25 1 MHz R amp S MR300xU and set the following output powers in succession By using the communication analyzer check the output power at X1 Output power 10 Wpep only R amp S MR300xH 10 Wpep 1 dB 5 Wpep 5 Wpep 1 dB 2 Wpep 2 Wpep 2 dB 1 Wpep 1 Wp_ep 2 dB 0 5 Wpep 0 5 Wpep 3 dB Possible cause of fault Module radio controller A1 power a
21. SS E E en kF 4 5 GHL JKL i wea a rat lt A m E l oe 9 wiz TR 2 oe 4 ai p _ GE PURE oF T a FLN pi E ICN 4G A 231000 R D0894 20004 A 01 1 i Undo the nine captive hexagon socket head screws at the upper cover by using a socket head screw key 2 5 mm ii Lift the upper cover carefully off c Undo the seven captive hexagon head screws fixing the RF unit to the housing of the tactical radio E Se ee a ee 5 10 Service Manual I Level 6124 8346 82 04 d Insert the extracting hook into the hole on the right provided for the purpose and with your left hand get hold of the RF unit to lift it off carefully R amp S MR300xH U Figure 5 9 RF Unit Removal RF Unit Change ICN 4G A 231000 R D0894 10010 A 01 1 Service Manual I Level 6124 8346 82 04 1 hexagon head screws 2 RF unit 3 RF unit removed e Undo RF cable W7 on the RF unit 2 Installing the RF Unit To install a new or repaired RF unit proceed in the reverse order of removal R amp S MR300xH U Antenna Tuning Unit Change 5 2 3 Antenna Tuning Unit Change 1 Removal and installation of an ATU 3 and an ATU 4 are alike If an ATU 4 is inserted instead of an ATU 3 a software update may be necessary Removing the Antenna Tuning from R amp S MR 300xH a Putthe tactical radio on a work table in operating position so that the upper cover is accessible from t
22. TX Frequency variable see below Output power variable see below Modulation J3E upper sideband 20 At X5 1 LINE _TX and X5 22 LINE _TX connect AF generator of audio analyzer and feed in two signals simultaneously with the following parame ters Tadiot 1 0 kHz faudioz 1 8 kHz Signal level 0 dBm into 600 Q R amp S MR300xH 6 dBm into 600 Q R amp S MR300xU 2 4 At X1 ANT connect power meter input of communication analyzer 2 5 At radio set an output power of 20 W R amp S MR300xH or 10 W R amp S MR300xU and the following transmit frequencies in succession Frequencies R amp S MR300xH 1 983 MHz 10 1 MHz and 20 1 MHz Frequencies R amp S MR300xU 25 1 MHz 42 1 MHz 70 9 MHz 108 1 MHz 185 1 MHz and 310 1 MHz 502 125 MHz By using the communication analyzer at X1 check the intermodulation dis tortion relative to PEP at each test frequency It is necessary to measure intermodulation products IM3 IM5 and IM7 for each test frequency Possible cause of fault Module radio controller A1 power amplifier A2 and or connected modules defective lt 34 dBpep lt 36 dBpep lt 32 dBpep valid for greatest inter modulation product IM3 IM5 IM7 4 30 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Two tone Intermodulation of Transmitter in Fix Frequency Mode ee a ee ee No Activity fault elimination No
23. Transmitter Noise in Fix Frequency Mode sect 4 5 10 Transmitter Noise in Fix Frequency Mode Two tone Intermodulation of Transmitter in Fix Frequency Mode sect 4 5 11 Two tone Intermodulation of Transmitter in Fix Frequency Mode VSWR Reduction of Transmitter in Fix Frequen cy Mode sect 4 5 12 VSWR Reduction of Transmitter in Fix Frequen cy Mode Sensitivity of Receiver in Fix Frequency Mode sect 4 5 13 Sensitivity of Receiver in Fix Frequency Mode Desensitization of Receiver in Fix Frequency Mode sect 4 5 14 Desensitization of Receiver in Fix Frequency Mode Frequency Response of Receiver in Fix Fre quency Mode sect 4 5 15 Frequency Response of Receiver in Fix Fre quency Mode IF Rejection of Receiver in Fix Frequency Mode sect 4 5 16 IF Recjection of Receiver in Fix Frequency Mode Total Harmonic Distortion sect 4 5 17 Total Harmonic Distortion RSSI Squelch sect 4 5 18 RSSI Squelch Miscellaneous Functions sect 4 5 19 Miscellaneous Functions Antenna Tuning Unit sect 4 5 20 Antenna Tuning Unit Spurious Emissions sect 4 5 21 Spurious Emissions Crossmodulation sect 4 5 22 Crossmodulation Intemodulation Distortion sect 4 5 23 Intemodulation Distortion Weighted S N Ratio sect 4 5 24 Weighted S N Ratio Image Rejection sect 4 5 25 Image Rejection Blocking sect 4 5 26 Blocking Service Manual I Level 6
24. U Intemodulation Distortion 4 5 23 Intemodulation Distortion 1 Carry out the test steps Table 4 27 Table 4 27 Intemodulation Distortion Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Intermodulation Distortion HF Range 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency fnom 1 983 MHz Modulation J3E Preamplifier OFF AGC OFF MGC 18 dB 2 2 At the antenna terminal X1 ANT connect the power combiner 2 3 By using the signal generator at input 1 of the power combiner feed in an in terfering signal with the following parameters Input level Linterf 10 dBm Frequency offset 30 kHz 2 4 By using the signal generator at input 2 of the power combiner feed in an in terfering signal with the following parameters Input level Linter 10 dBm Frequency offset 60 kHz 2 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio Of the intermodulation distorsion product and note 2 6 Disconnect the two signal generators from the power combiner inputs and disconnect power combiner from radio 2 1 By using the signal generator at X1 ANT feed in an HF signal with the fol lowing parameters Frequency from 1 983 MHz Signal level L
25. U Power Supply Change Figure 5 19 Removing the Lower Cover UPPER COVER 5 JEL H pE ICN 4G A 231000 R D0894 20004 A 01 1 i Undo the nine captive hexagon socket head screws at the lower cover by using a socket head screw key 2 5 mm ii Lift the lower cover carefully off c Undo the two ribbon cables on the power supply Figure 5 20 To do so first of all undo the securing clips at the connectors Then pull off ribbon cables carefully a a Service Manual I Level 6124 8346 82 04 5 29 R amp S MR300xH U Power Supply Change Figure 5 20 Power Supply Undoing Cables ICN 4G A 231000 R D0894 10013 A 01 1 d Lift the power supply carefully out Figure 5 21 a eS ae a ee a a a a ee a a a ee ee eee ae See 5 30 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Power Supply Change Figure 5 21 Power Supply Removal ICN 4G A 231000 R D0894 10014 A 01 1 2 Installing the Power Supply To install a new or repaired power supply proceed in the reverse order of removal a a SO ee Service Manual I Level 6124 8346 82 04 5 31 R amp S MR300xH U Front Panel Change 5 2 7 Front Panel Change 1 Removing the Front Panel a Turn the two quick release fasteners on the front panel by 90 degrees to the left Figure 5 22 Figure 5 22 Front Panel Undoing Quick Release Fasteners a z s C E a
26. any tensile or compressive stress on hybrid circuit and cables Pull off the RF cables by using an extracting hook The lines with connectors X28 and X29 are only available with Mod 02 of Housing A9 g Undo the two hexagon socket head screws at the flexible wiring h Lift the power amplifier carefully out R amp S MR300xH U VHF UHF Power Amplifier Change Figure 5 18 Power Amplifier Removal JG H re f Mees ICN 4G A 231000 R D0894 10006 A 01 1 aa a ee ee Se ee ee 5 26 Service Manual I Level 6124 8346 82 04 2 Installing the VHF UHF Power Amplifier in R amp S MR300xU To install a new or repaired power amplifier proceed in the reverse order of removal R amp S MR300xH U Power Supply Change 5 2 6 Power Supply Change 1 Removal and installation of module Power Supply and module Power Supply Il are alike If a Power Supply Il is inserted instead of module Power Supply a software up date may be necessary Removing the Power Supply a Put the tactical radio upside down on a work table so that the lower cover is acces sible from the top Figure 5 19 b Remove the lower cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket E a ee ee ae eee 5 28 Service Manual I Level 6124 8346 82 04 R amp S MR300xH
27. cause of fault Module RF unit A3 and or connected modules defective 5 7 At the radio change the following parameter Frequency fo 333 MHz 5 8 At the signal generator set the following parameters Frequency 333 MHz Signal level 110 dBm 5 9 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 5 10 At the signal generator change the following parameter Frequency 613 910 MHz 1 IF 5 11 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lo at the signal generator until the audio level Laudio once again reaches the value acc to step 5 9 Make a note of the signal level Lo 5 12 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective a a a a Service Manual I Level 6124 8346 82 04 4 71 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 5 13 At the radio change the following parameter Frequency fo 436 MHz 5 14 At the signal generator set the following parameters Frequency 436 MHz Signal level 110 dBm 5 15 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 5 16 At the signal generator change the following parameter
28. cause of fault Module RF unit A3 and or connected modules defective gt 100 dB 2 6 By using the signal generator at X1 ANT of radio feed in an RF signal with the following parameters Frequency 31 MHz 63 MHz and 109 MHz Signal level 110 dBm Service Manual I Level 6124 8346 82 04 4 45 R amp S MR300xH U IF Recjection of Receiver in Fix Frequency Mode No Activity fault elimination Nominal value 2 1 By using the audio analyzer measure audio level Laudio and note 2 8 Change signal generator frequency to 140 455 MHz 1st IF Increase IF level Ly until audio level Laudio Measured in step 2 6 is reached again Note IF level Lo 2 9 Calculate IF rejection as follows gt 100 dB IF rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 2 10 By using the signal generator at X1 ANT of radio feed in an RF signal with the following parameters Frequency 111 MHz 143 MHz 145 MHz and 224 MHz Signal level 110 dBm 2 11 By using the audio analyzer measure audio level Laudio and note 2 12 Change signal generator frequency to 172 955 MHz 1st IF Increase IF level Lo until audio level Laudio Measured in step 2 10 is reached again Note IF level Lo 2 13 Calculate IF rejection as follows gt 85 dB IF rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected mod
29. change the following setting Frequency 107 9 MHz 4 16 By using the signal generator at input 1 of the power combiner feed in an RF signal with the following parameters Frequency 107 9 MHz Modulation FM Receive input level RF1 variable 4 17 By using the audio analyzer at X4 B check AF signal S N N with weighting 12 dB SINAD filter acc to CCITT If necessary vary receive input level RF1 until the value of 12 dB SINAD is reached Make a note of the set receive input level RF 1 4 18 By using the signal generator at input 2 of the power combiner feed in an RF signal with the following parameters Frequency 107 925 MHz Modulation unmodulated Receive input level RF2 variable 4 19 By using the audio analyzer at X4 B check AF signal S N N with weighting 6 dB SINAD filter acc to CCITT If necessary increase receive input level RF2 until the value is reduced to 6 dB SINAD Make a note of the set receive input level RF2 4 20 From the noted RF levels calculate the adjacent channel rejection ACR as gt 60 dB follows RF1 RF2 ACR Possible cause of fault Module RF unit A3 and or connected modules defective 4 21 Switch off test equipment and disconnect radio from test setup 4 22 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 16 IF Recjection of Receiver in Fix Fre quency Mode
30. frequency 1 0 kHz 3 3 By using the audio analyzer between X4 B AUDIO_RX and X4 J 3 to 6 dBm AUDIO_RX check the output power at an impedance of 600 Q Possible cause of fault Module radio controller A1 and or connected modules defective ac ce ee ee ae eee 4 52 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Miscellaneous Functions No Activity fault elimination Nominal value 3 4 Disconnect signal SO at X4 C from GND This causes a shut down of all audio amplifiers within the radio 3 5 By using the audio analyzer between X4 B AUDIO_RX and X4 J lt 50 dBm AUDIO_RX check the output power at an impedance of 600 Q Possible cause of fault Module radio controller A1 and or connected modules defective 4 Function MIC_BIAS 4 1 Connect connector contact X4 C SO to X4 G GND 4 2 Connect connector contact X4 H MIC_BIAS to X4 G GND via 1 kQ resis tor 4 3 By using the digital multimeter voltmeter check the voltage at X4 H 5 V 10 MIC_BIAS Possible cause of fault Module radio controller A1 and or connected modules defective 5 Function SILENT_LA 5 1 Switch off the power supply of the radio 5 2 Activate VM_DETECT at X6 S11 rear connector 5 3 Switch on the power supply of the radio 5 4 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Fr
31. gt Figure 2 5 MR 3000H U mod 02 03 without Cover Bottom 1 pli ran 3 sect tema senna ann eect see uate aves r rats Fa Ta Fa fr r mT AT a ee 3 a M a T A I RAA AAIR TEE LTS poe E F me Bore idan ie Ee IE 1 2 Sal LOT y g en omen oe l1 f a S S ee ICN 4G A 231000 R D0894 00005 A 01 1 Line Interface A6 Power Supply A5 Radio Controller A1 Front Panel A4 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Figure 2 6 Housing A9 Mod 02 Top The radio consists of the following assemblies 1 X27 RF IN OUT 2 X29 CARR MAG 3 X28 ALC Service Manual I Level 6124 8346 82 04 ICN 4G A 231000 R D0894 00010 A 01 1 29 R amp S MR300xH U 1 2 10 Figure 2 7 Housing A9 Mod 03 Top X27 RF IN OUT The radio consists of the following assemblies ICN 4G A 231000 R D0894 00011 A 01 1 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U The radio consists of the following assemblies Figure 2 8 Housing A9 Mod 02 and 03 Bottom ICN 4G A 231000 R D0894 00012 A 01 1 from Audio X4 to Radio Controller X14 Voice from Data X5 to Radio Controller X18 Data X11 Front Panel X53 VBATT_IN Power Supply X54 X55 RCB_EXT Radio Controller X13 from ERASE Switch X111 from GPS Antenna Connector NOOR WD gt a See SS SS ES Se ee ee a a a ee a a ae eae ee ee Service Manual I Level 6124 8346 82 04 2 11 R amp
32. nan 19 I i T R me ie a a ia f m a TAPE A N pE ee al e Key p eel j T we fl a f na E ees Ault o ae Pfa MI pA hl ICN 4G A 231000 R D0894 10011 A 01 1 b Take the front panel carefully off to the front Figure 5 23 ac ce I eee 5 392 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Front Panel Change Figure 5 23 R amp S MR 3000U Front Panel Removal ICN 4G A 231000 R D0894 10012 A 01 1 2 Installing the Front Panel When installing a new or repaired front panel make sure that the two quick release fas teners engage correctly in the housing Only then turn them by 90 degrees to the right to ensure that the front panel is tightly seated Service Manual I Level 6124 8346 82 04 593 R amp S MR300xH U Radio Controller Battery Change 5 2 8 Radio Controller Battery Change 1 Put the tactical radio upside down on a work table so that the lower cover is accessible from the top sect 5 Replacement of Modules Figure 5 24 Removing the Lower Cover ICN 4G A 231000 R D0894 20005 A 01 1 2 Remove the lower cover sect 5 Replacement of Modules 3 Undo the battery connector 1 aa ce ee ee ae eee 5 34 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Radio Controller Battery Change Figure 5 25 Replacing the Backup Battery ICN 4G A 23 1000 R D0894 10004 A 01 1 battery connector batt
33. power at X1 Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective Service Manual I Level 6124 8346 82 04 4 23 R amp S MR300xH U RF Power of Transmitter in Fix Frequency Mode No Activity fault elimination Nominal value 3 5 At the radio set a transmit frequency of 30 1 MHz R amp S MR300xH or 108 1 MHz R amp S MR300xU and set the following output powers in succes sion By using the communication analyzer check the output power at X1 Output power 5 W 5 W 1 dB 2 W 2 W 2 dB 1 W 1 W 2 dB 0 5 W 0 5 W 3 dB Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 4 RF Power in Bypass Mode 4 1 At the radio change the following parameters Mode switch RX TX Submenu OPERATION BYPASS Frequency 502 125 MHz R amp S MR300xH 1 983 MHz R amp S MR300xU Modulation FSE Information displayed RF gt REAR 4 2 By using the communication analyzer at X1 check the output power Possible cause of fault 7 dBm 2 6 0 dB l l R amp S MR300xH Module radio controller A1 power amplifier A2 RF unit A3 and or con nected modules defective 0 dBm 2 4 5 dB R amp S MR300xU 4 3 At the radio change the following parameter Tx frequency 1 9
34. setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Weighted S N Ratio 2 1 Connect the audio analyzer at X4 B AUDIO_ RX 2 2 Connect signal generator at X1 ANT 2 3 At the radio set the following parameters Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Modulation J3E AGC ON 2 4 At the signal generator set the following parameters Frequency 30 101 MHz Signal level 1 mV EMF 2 5 By using the audio analyzer at X4 B check SINAD with audio psophomet ric weighting filter acc to CCITT gt 40 dB Possible cause of fault Module RF unit A3 and or connected modules defective 2 6 Switch off test equipment and disconnect radio from test setup 2 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 25 Image Rejection ac ce ee ee Se ae eee 4 64 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U 4 5 25 Image Rejection 1 Carry out the test steps Table 4 29 Table 4 29 Image Rejection Fault Detection Image Rejection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Image Rejection HF Range 2 1 Connect the audi
35. the tests described in this chapter continue troubleshooting sect 4 5 26 Blocking a a ee ee ee ee ee ee eee 4 72 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Blocking eeel 4 5 26 Blocking 1 Carry out the test steps Table 4 30 Table 4 30 Blocking Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Blocking HF Range 2 1 Connect the audio analyzer at X4 B AUDIO_ RX 2 2 Connect signal generator at X1 ANT 2 3 At the radio set the following parameters Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 20 1 MHz Modulation J3E AGC OFF Preamplifier OFF MGC 78 dB Bandwidth 2 4 kHz 2 4 At the signal generator set the following parameters Frequency 20 1 MHz Signal level 1 mV EMF 2 5 Reduce the MGC value until an audio output level of 4 to 7 dBm is mea sured at X4 B AUDIO_RX by using the audio analyzer Make a note of the measured AF level Lo1 2 6 By using a second signal generator at X1 ANT feed in a signal blocking signal with the following parameters Signal level 3 dBm Frequency offset 30 kHz 2 By using the audio analyzer at X4 B AUDIO_RX measure the audio output AL lt 3 dB level Loz and calculate the level change as follows
36. value acc to step 4 3 Make a note of the signal level Lo 4 6 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB LO Possible cause of fault Module RF unit A3 and or connected modules defective 4 7 At the radio change the following parameter Frequency fo 143 MHz 4 8 At the signal generator set the following parameters Frequency 143 MHz Signal level 110 dBm 4 9 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 4 10 At the signal generator change the following parameter Frequency 488 910 MHz 1 IF 4 11 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 4 9 Make a note of the signal level Lo 4 12 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 4 13 At the radio change the following parameter Frequency fo 224 MHz 4 14 At the signal generator set the following parameters Frequency 224 MHz Signal level 110 dBm 4 15 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 4 16 At the signal generator change the following par
37. 04 R amp S MR300xH U Crossmodulation No Activity fault elimination Nominal value 2 1 The modulation transfer to the RF signal must be smaller than 10 This cor responds to the audio voltage of Lg 10 2 8 Calculate the crossmodulation gt 0 dBm Crossmodulation is defined as the absolute power level of the interfer ing signal Possible cause of fault Module power amplifier A2 and or connected modules defective 2 9 At the radio and the signal generator change the following parameters Frequency 10 1 MHz MGC radio only 74 dB Modulation radio only ON 2 10 Repeat steps 2 4 to 2 7 2 11 Calculate the crossmodulation gt 0 dBm Possible cause of fault Module power amplifier A2 and or connected modules defective 2 12 At the radio and the signal generator change the following parameters Frequency 29 9 MHz MGC radio only 74 dB Modulation radio only ON 2 13 Repeat steps 2 4 to 2 7 2 14 Calculate the crossmodulation gt 0 dBm Possible cause of fault Module power amplifier A2 and or connected modules defective 2 15 Switch off test equipment and disconnect radio from test setup 2 16 If no errors have been detected during the tests described in this chapter continue troubleshootingsect 4 5 23 Intemodulation Distortion e E S a e N a a a a E Service Manual l Level 6124 8346 82 04 4 59 R amp S MR300xH
38. 0kHz C101 n FE MOHE g n F 5 Press The display changes OOFF sf t 1 gt 44 225 000kHz C101 FARE MHOGO A ACL Set the RX frequency to the output frequency of the fre quency standard for example 10 MHz see sect 3 2 2 1 Changing the Frequency 6 Press once The display changes OOF F FIXED FREQUENCY OF CPG GPS 7 Press once The display changes OOF F gt LOGIN For access to the calibration function it is necessary to en ter the code for User Level 2 see sect 3 3 Login Opera tion 8 Press once The display changes OFF E BITE 9 Press The display changes OFF t BITT TEST OF OP EA EA Service Manual l Level 6124 8346 82 04 6 13 R amp S MR300xH U Calibration Step Control Action Note 10 Press twice The display changes OOFF YNTH BITS Rs T0000 000 kHz CAL 11 Press CAL 12 Switch off After the message FINISHED OK switch off the tactical radio and disconnect the test setup The following error messages may appear during the calibration EXT REF LOW LEVEL external reference low level The output power of the frequency standard is too low Increase the output power or use an other frequency standard EXT REF WRONG FREQ external reference wrong frequency Calibration with the applied reference frequency failed Check if the RX frequency set on the radio matches the reference frequency of the frequency standard If the frequency set on the radio and the reference fr
39. 124 8346 82 04 R amp S MR300xH U For fault elimination replace the module which was found to be defective or continue in ac cordance with the Service Manual of the module concerned Table 4 4 Table 4 4 Replacement Crossreference List R amp S M3TR Disassembly sect 5 Replacement of Modules R amp S M3TR Assembly sect 5 3 Assemble Procedures Radio Controller sect 5 2 1 Radio Controller Change HF VHF Power Amplifier sect 5 2 4 HF VHF Power Amplifier Change VHF UHF Power Amplifier sect 5 2 5 VHF UHF Power Amplifier Change RF Unit sect 5 2 2 RF Unit Change Front Panel sect 5 2 7 Front Panel Change Power Supply sect 5 2 6 Power Supply Change Antenna Tuning Unit sect 5 2 3 Antenna Tuning Unit Change Sealing Cords sect 5 2 9 Housing Sealing Cords Change Battery sect 5 2 8 Radio Controller Battery Change Do not use the antenna connected at R amp S M3TR as a handle to carry the radio to an other location e g to the service depot Carrying the radio at the antenna may dam age the tuning filter mechanically In case that R amp S M3TR was opened for troubleshooting fault elimination and or replace ment of modules components it is absolutely mandatory to check it for tightness after reas sembly For this perform the pressure drop measurement and immersion test detailed in sect 4 4 Leak Test a eee eS SS ES Sa ae ee ee ee a ee ee ee eee Sees ee
40. 2 04 R amp S MR300xH U Abbreviations SSS SS SS SSS SS SS SS ee Rx receive S N signal to noise ratio SECOM H special EPM procedure for HF SECOM V special EPM procedure for VHF SECOS secure EPM communication system SINAD signal to noise ratio and distortion SSB single sideband modulation SQL squelch STANAG standard NATO agreement SW software SYN synthesizer THD total harmonic distorsion TX transmit UHF ultra high frequency USB universal serial bus VCO voltage controlled oscillator VHF very high frequency VSWR voltage standing wave ratio a Sao aS eS aS a ee a a a ee a a Se ee ees Service Manual I Level 6124 8346 82 04 A 3 R amp S MR300xH U Table of Contents 1 General DAC ed saceocsctanicncaceeaeasesteneaescscasendeieseatosduasatsnsaevantpenarssaatenaisyeansecatans 1 1 2 CONSIGO ene nee eee nee E eee ee 2 1 UN COUN sore setesence decease E E A 3 1 3T RK SCAN Pa sane eet ete setae aS ee Seeing EEES 3 2 3r MLAS UN cic ecco eared E ee ee E 3 3 3 3 SeMS and CA NIN a ates cage erence EAE Tans 3 4 S UREE E 9 gt 2 E EE E E E E E E E E ee eee ee een ee oe ee 3 4 332 MIR 300XHW U Cabling srassiisnsin ukana a aaa A EUa TEN iii 3 4 A Manen E ainina EO A EE aai 4 1 4 1 Test Equipment Tools and Software cccccccccecee eee eeeeeeeeeeeeanecnecenesenseneeseesenensneoaes 4 1 7 TeS iho n E ee ee eee 4 2 4 3
41. 2 02 230 Keyboard Support 1 1 6118 3423 00 240 Keyboard Support 2 1 6118 3430 00 250 Keyboard Support 3 1 6118 3446 00 260 DIN912 M3x10 A4 Hinte 9 6098 9016 00 270 DIN137 A3 A2 Black 5 6098 9045 00 285 Retainer 1 6140 7057 00 295 Pressure Spring 1 6140 6621 00 300 1 4 Turn Lock 1 6126 4148 00 310 Knob 1 6126 4248 00 335 Cover Sealing 2 6126 5380 00 345 Rubber Strip 1 6140 6780 00 355 Cover 2 6140 6644 02 360 Housing A9 1 6099 0658 03 380 Protective Cap 1 6094 9370 00 390 M2 5x3 DIN7985 Cr Black 1 6086 0325 00 400 Ground Bolt X3 1 6094 8780 00 Service Manual l Level 6124 8346 82 04 TES R amp S MR300xH U 74 Spare Parts Item No Designation Component no Quantity Ident no 410 Nut for Ground Bolt 1 6094 8815 00 420 Cable W2 1 6094 7602 00 430 Cable W4 1 6094 7625 00 440 Sealing Ring 1 0071 8227 00 450 Erase Switch w Cable S1 1 6099 3205 00 460 Handle PTD 1 6099 1454 02 470 Screw 1 6121 9606 00 480 Audio Connector Flex X4 1 6099 0641 02 495 Data Connector Flex X5 1 6126 5350 02 500 DIN 965 ISR M4x6 A4 BI 1 6098 9039 00 510 DIN 7985 M3x6 A4 BI 1 6098 9022 00 520 Special Receptacle X6 1 6118 3581 00 530 DIN7985 M3x8 A4 BI 2 6099 3470 00 540 Power Supply II A5 1 6126 4525 02 550 Radio Controller A1 1 on request 560 Battery with Connector G1 1 6126 5138 00 570 Battery with Connector G1 1 6094 9592 00 580 Ba
42. 3 and or connected modules defec tive R amp S MR300xH 107 99 MHz 54 Hz R amp S MR300xU 502 125 MHz 251 Hz 2 2 Switch off test equipment and disconnect radio from test setup 2 3 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 9 Harmonic Emission of Transmitter in Fix Frequency Mode 4 26 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Harmonic Emission of Transmitter in Fix Frequency Mode eee Ml 4 5 9 Harmonic Emission of Transmitter in Fix Frequency Mode 1 Carry out the test steps Table 4 13 Table 4 13 Harmonic Emission of Transmitter in Fix Frequency Mode Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency variable see below Output power variable see below Modulation F3E without modulation signal 2 Harmonic Emission 2 1 Only R amp S MR 300xH lt 40 dBc At radio set an output power of 20 W and the following transmit frequencies in succession By using the communication analyzer at X1 check the har monic emission referred to the selected transmit frequency Frequencies 1 983 MHz 10 1 MHz and 20 1 MHz Pos
43. 3E Frequency shift 6 25 kHz Preamplifier OFF CCITT filter ON 4 4 By using the signal generator at input 1 of the power combiners feed in an RF signal with the following parameters Frequency 30 1 MHz Modulation FM Receive input level RF 1 variable Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Frequency Response of Receiver in Fix Frequency Mode a a ae ea a ea a eS ee a ee No Activity fault elimination Nominal value 4 5 By using the audio analyzer at X4 B check AF signal S N N with weighting 12 dB SINAD filter acc to CCITT If necessary vary receive input level RF1 until the value of 12 dB SINAD is reached Make a note of the set receive input level RF 1 4 6 By using the signal generator at input 2 of power combiner feed in an RF sig nal with the following parameters Frequency 30 125 MHz Modulation unmodulated Receive input level RF2 variable 4 1 By using the audio analyzer at X4 B check AF signal S N N with weighting 6 dB SINAD filter acc to CCITT If necessary increase receive input level RF2 until the value is reduced to 6 dB SINAD Make a note of set receive input level RF2 4 8 From the noted RF levels calculate the adjacent channel rejection ACR as gt 60 dB follows RF1 RF2 ACR Possible cause of fault Module RF unit A3 and or connected modules defective 4 9 At the radio change the following setting
44. 5 22 LINE_TX connect AF generator of audio analyzer and feed in two signals simultaneously with the following parame ters faudiot 1 kHz Taudie2 1 8 kHz Signal level 0 dBm into 600 Q a Se ae SSS SS SS a a a ee ee a Se 6 ae a aeece Service Manual I Level 6124 8346 82 04 4 13 R amp S MR300xH U Power Consumption 4 3 No Activity fault elimination By using the digital multimeter ammeter check the current Possible cause of fault Module power supply A5 and or connected modules defective Nominal value lt 3 3A R amp S MR 300xH lt 3 0A R amp S MR 300xU Current Consumption Transmit Mode Modulation F3E 5 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 60 125 MHz R amp S MR 300xH 185 1 MHz R amp S MR 300xU Signal power 10 W Modulation F3E 5 2 By using the digital multimeter ammeter check the current Possible cause of fault Module power supply A5 and or connected modules defective lt 25A R amp S MR 300xH lt 2 2 A R amp S MR 300xU 5 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 60 1 MHz R amp S MR 300xH 185 1 MHz R amp S MR 300xU Signal power 5 W Modulation F3E 5 4 By using the digital mult
45. 75 5 Replacement of Modules 5 1 Disassemble Procedures NOTICE In this chapter mod 02 03 is illustrated For mod 04 the line interface is not present NOTICE If the covers are labeled upper and lower cover the assembly positions of the covers must be observed Covers without labels can be interchanged NOTICE The tactical radio may be opened only by authorized specially trained personnel NOTICE If the tactical radio is a manpack first of all remove the battery pack before opening the unit Put the tactical radio on a work table in operating position Figure 5 1 R amp S MR300xH U Disassemble Procedures Figure 5 1 Operating Position lt M ie ee pel mie eee ah Se a ea j il i 4 JEL i 1 l en Jis elle ij H TURF FLH ICN 4G A 231000 R D0894 20003 A 01 1 2 Undo the nine captive hexagon socket head screws at the upper cover by using a socket head screw key 2 5 mm Turn the covers upside down before putting them on the work table The RF gaskets on the covers must not get in contact with paper as the sulphur in the paper will damage the gaskets Lift the upper cover carefully off Figure 5 2 aa a ee ee ee eee 5 2 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Disassemble Procedures Figure 5 2 Removing the Upper Cover UPPER COVER 5 JKL _ _
46. 83 MHz R amp S MR300xH or 502 125 MHz R amp S MR300xU 4 4 By using the communication analyzer at X1 check the level of output power Possible cause of fault 0 dBm 2 4 dB m R amp S MR300xH Module radio controller A1 power amplifier A2 RF unit A3 and or con nected modules defective 7 dBm 2 7 dB R amp S MR300xU 4 5 Switch off test equipment and disconnect radio from test setup 4 6 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 7 Power at Rear Connector X6 ea ce I 4 24 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Power at Rear Connector X6 4 5 7 Power at Rear Connector X6 1 Carry out the test steps Table 4 11 Table 4 11 Power at Rear Connector X6 Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 At X6 C2 RF_INOUT connect a load resistor of 50 Q 500 W 1 3 Switch on test equipment and radio 2 Power at REAR Connector X6 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 10 1 MHz R amp S MR300xH 502 125 MHz R amp S MR300xU Output power 20 W R amp S MR300xH 10 W R amp S MR300xU Modulation F3E Information displayed RF gt REAR 2 2 By using the communication analyzer a
47. A Possible cause of fault Module power amplifier A2 and or connected modules defective 4 4 Disconnect load resistor from X1 4 5 By using the communication analyzer at X1 check output current reduced current leq lt 1 35 A Possible cause of fault Module power amplifier A2 and or connected modules defective 4 6 Switch off test equipment and disconnect radio from test setup 4 7 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 13 Sensitivity of Receiver in Fix Frequen cy Mode e a a a a a a ee ee el Service Manual I Level 6124 8346 82 04 4 33 R amp S MR300xH U Sensitivity of Receiver in Fix Frequency Mode a Ml 4 5 13 Sensitivity of Receiver in Fix Frequency Mode 1 Carry out the test steps Table 4 17 Table 4 17 Sensitivity of Receiver in Fix Frequency Mode Fault Detection 1 No Activity fault elimination Preparations Nominal value 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 SSB Mode 2 1 To check the S N N value connect the audio analyzer at X4 B AUDIO_RX 2 2 Connect signal generator at X1 ANT 2 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency variable see below Bandwidth 2 4 kHz Modulation J3E upper sideband Preamplifier OFF
48. Carry out the test steps Table 4 24 Table 4 24 Antenna Tuning Unit Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Antenna Tuning Unit 2 1 Connect 50 W load resistor to connector X1 ANT 2 2 At the radio press softkey RNG range and then EDT edit 2 3 At the radio enter a start and a stop frequency to define the range where the faulty ATU frequency is located 2 4 Confirm by pressing ENT 2 5 Press softkey LRN learn The ATU now starts learning the frequencies between start and stop frequency 2 6 Enter the faulty ATU frequency 2 7 Set the radio transmit power to 20 W and activate transmit mode 2 8 On the LC display check the bargraph indicator full scale indication Possible cause of fault Module ATU defective Possible display if ATU is defective at VSWR gt 3 to 5 qualitative VSWR indication at VSWR gt 5 message VSWR5EXCEED 2 9 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 21 Spurious Emissions a a a a ne er Service Manual I Level 6124 8346 82 04 4 55 R amp S MR300xH U Spurious Emissions a ee 4 5 21 Spurious Emissions 1 Carry out the test steps Table 4 25 Table 4 25 Spurious Emissions Fault Detection No Activity fault elim
49. Desensitization of Receiver in Fix Frequency Mode Fault Detection ccceeeeeeeea ees 4 40 Frequency Response of Receiver in Fix Frequency Mode Fault Detection 008 4 41 IF Recjection of Receiver in Fix Frequency Mode Fault Detection ccccceceeceeeeeeeeeees 4 45 Total Harmonic Distortion Fault Detection cece cccccseeeceeeeeeeeeeeseeeseeeseeeeaeeeseeeeaeeeaaeeees 4 47 RSSI Squelch Fault Detection ccc ecccccccsececeeeceeeecuecseeeceeceuseceeceeeecueceueesseessusesueesseeenaes 4 50 Miscellaneous Functions Fault Detection ccc ccccceceeseeeeeeeeeeeeeeeeseeeeeeeeseeeseeeseesaeeeaaes 4 52 Antenna Tuning Unit Fault Detection 0 0 0 0 ecccccccceecceeees sees eeseeeeseeeseeeseeeeseeesseeseeeeaeeeaaes 4 55 Spurious Emissions Fault Detection ccc ccceccceecseceeeeceeceeeeeeeeeeeeseceeeeeeeseseeeeseeneeeaneeees 4 56 Crossmodulation Fault Detection 2 00 0 ccccccceccceeeea eee eeeeeaeeceeeeseeeseeeeseeeeseeeseeseeeeseeeseeesaeees 4 58 Intemodulation Distortion Fault Detection ec cccccceeecseeeceeeceeeeeeeeeeeeseeeeaeeeseueeaeeeaeeeeas 4 60 Weighted S N Ratio Fault Detection ccccccccseecceeeeeeeeeeeeeeseeeeeseeeeeseueesseeeeseceeesaeeeeesaeees 4 64 Image Rejection Fault Detection cc cccccecccseccseececseeecceseceuseseueessaeseaueesceesenseeeseeeessaeees 4 65 Blocking Faut Detectoare E EEEE EE 4 73 Listot Test EguiD
50. FF 3 6 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 104 dBm at 301 225 MHz By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 30 1 MHz 60 125 MHz 90 1 MHz 107 9 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 3 7 At the radio change the following setting Preamplifier ON 3 8 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 115 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 30 1 MHz 60 125 MHz 90 1 MHz 107 9 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 3 9 At the radio change the following setting Preamplifier OFF 3 10 At both radio and signal generator set the following receive frequencies in gt 10 d B SINAD succession see below At signal generator set RF level 104 dBm at 301 225 M HZ By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 108 1 MHz 185 1 MHz 310 1 MHz 502 125 MHz Possible caus
51. ING 25 ka 4 9 Enteranew RX Range depends on installed option codes 0 to frequency WXYZ or change RX fre or quency selec Step 25 kHz Service Manual l Level 6124 8346 82 04 tively 6 15 R amp S MR300xH U Changing the Frequency Step Control er Action Press Note If the entered RX frequency is within the permitted entry range the display changes TH AX For operation with same Rx and TX frequency just press enter to finish frequency setting Continue with 6 if a TX frequency different from the RX frequency is requested TX Press Open the editor window Ts FREGUENCY 55 250 000 kHz CHA SPACING 25 kH Enter anew TX frequency or change TX fre quency selec tively Range depends on installed option codes Step 25 kHz 6 16 Press If the entered TX frequency is within the permitted entry range the editor window will be closed Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Login Operation T a a 6 2 2 Login Operation e Inthe LOGIN menu the level of user access user levels 0 to 2 are available can be se lected allowing the user to perform the functions he is authorized to use Selection is made by entering a 4 digit password and confirming with ENT OOF F LOGIN e The following default passwords are defined Level 0 no password required Level 1 1234 Level 2 2345 The
52. IO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator so that the audio level Laudio once again reaches the value acc to step 4 5 Make a note of the signal level Lo ea cee I eee 4 62 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Intemodulation Distortion No Activity fault elimination Nominal value 4 9 Calculate the intermodulation distorsion IP3 as follows IP3 0 5 Lintert Lo Linterf 0 5 3 Lintert Lo IP3 gt 12 dBm Possible cause of fault Module power amplifier A2 and or connected modules defective 4 10 A the following frequencies fnom repeat steps 4 1 to 4 9 from 185 1 MHz IP3 gt 12 dBm from 310 1 MHz IP3 gt 12 dBm from 502 125 MHz IP3 gt 12 dBm Possible cause of fault Module power amplifier A2 and or connected modules defective 4 11 Switch off test equipment and disconnect radio from test setup 4 12 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 24 Weighted S N Ratio n a a a a a a ee ee Service Manual I Level 6124 8346 82 04 4 63 R amp S MR300xH U Weighted S N Ratio 4 5 24 Weighted S N Ratio 1 Carry out the test steps Table 4 28 Table 4 28 Weighted S N Ratio Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test
53. If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 15 Frequency Response of Receiver in Fix Frequency Mode 4 40 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Frequency Response of Receiver in Fix Frequency Mode 4 5 15 Frequency Response of Receiver in Fix Frequency Mode 1 Carry out the test steps Table 4 19 Table 4 19 Frequency Response of Receiver in Fix Frequency Mode Fault Detection 1 No Activity fault elimination Preparations Nominal value 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 SSB Mode 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Bandwidth 2 4 kHz default Modulation J3E AGC OFF MGC 38 dB Volume maximum 2 2 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fe 30 1 MHz Signal level 80 dBm Signal tuning from fe 100 Hz to fe 3000 Hz step 100 Hz 2 3 By using the audio analyzer at X5 2 LINE_RX X5 15 LINE_RX check the AF output level referred to the selected frequency Determine the ripple factor by calculating the difference between maximum and minimum Possible cause of fault Module RF unit A3 and or connected modules defective lt 2 5
54. Me WN csp eed setae sets E ri EAE ESEE EEr EETA EEEE 6 11 Spare Parts for R amp S MR 3000H iis sincsicsccddisaaiinetetebaudendeieamwsiemadion dunieindeabimunleaimamneniansieangatnalsadGandieinaiwtenian 7 1 Spare Parts for R amp S MR S000 iss sissies csnsssvancsassakalsaneenedssehraudivederaswnsdaaswpaseddadedanedadasenssdudatansvenne 7 3 E a a a a a ee ee ee Service Manual I Level 6124 8346 82 04 5 1 General Data This description deals with the following tactical radios e HF VHF Tactical Radio R amp S MR 3000H e VHF UHF Tactical Radio R amp S MR 3000U e HF VHF Tactical Radio R amp S MR 3001H e VHF UHF Tactical Radio R amp S MR 3001U e HF VHF Tactical Radio R amp S MR 3002H e VHF UHF Tactical Radio R amp S MR 3002U e HF VHF Tactical Radio R amp S MR 3003H e VHF UHF Tactical Radio R amp S MR 3003U R amp S MR300xH U General Data SSS SS SSS SS SS SS SS Se ee The difference between the tactical radios are the are shown in the Table 1 1 Table 1 1 Difference between the Tactical Radios L D L D L D L D O O w w N N 99 99 O O O O O O O O O O O O O O O O m m m m m m m m xX ow xX X xX xX xX xX gt gt gt gt gt gt op op op op op op ep op rove fore fore fore ore ore fore fore ag X ad ad X ad X ad CC Housing X X X X X X X X Frontpanel X X X X X X X X Power Amplifier HF VHF X X X X Power Amplifier VHF UHF oas x4 x4
55. ON TX Frequency variable see below Output power variable see below Modulation F3E without modulation signal 2 Transmitter Noise VCO2 and VCO3 2 1 At radio set an output power of 10 W and a transmit frequency for VCO2 of 42 5 MHz 20 2 2 By using the communication analyzer at X1 check the sideband noise ata_ lt 160 dBc Hz spacing of 10 from the transmit frequency Possible cause of fault Module RF unit A3 power amplifier A2 and or connected modules defec tive 2 3 At radio set an output power of 10 W and a transmit frequency for VCO3 of 70 0 MHz 20 2 4 By using the communication analyzer at X1 check the sideband noise at a spacing of 10 from the transmit frequency lt 160 dBc H lt c Hz Possible cause of fault Module RF unit A3 power amplifier A2 and or connected modules defec tive 3 Transmitter Noise VCO 1 only R amp S MR300xH 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 21 4 MHz 20 Output power 20 W pep Modulation J3E 1 kHz 6 dBm online E ee ee ee ae eee 4 28 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Transmitter Noise in Fix Frequency Mode T S a a No Activity fault elimination Nominal value 3 2 By using the communication analyzer at X1 check the sideband noise ata lt 130 dBc Hz spacing of 125 kHz f
56. R amp S M3TR Software Defined Radios R amp S MR300xH U service Manual Intermediate Level 6124 8346 82 04 Service Manual I Level Radiocommunications Systems Division 08 2010 Rohde amp Schwarz GmbH amp Co KG 81671 Munich Germany Printed in Germany Subject to change Data without tolerances order of magnitude only The R amp S logo Rohde amp Schwarz and R amp S are registered trademarks of Rohde amp Schwarz GmbH amp Co KG and their subsidiaries Trade names are trademarks of the owners R amp S MR300xH U Definitions Check Discolouration Disconnect Examine Functional check Hazardous voltages Make sure Open Perfect condition Replacement Replace Visual examination Service Manual I Level 6124 8346 82 04 Definitions In appropriate measurements by means of the specified test equipment prop er functioning of a unit or module is established Components such as connectors and printed circuit boards are examined if they have changed colour due to temperature effects and thus differ widely from their normal condition Pull off connector In case of trouble the unit module or components such as e g connectors are to be thoroughly checked for obvious mechanical damage This means that components modules units are checked for proper func tioning while installed Voltages gt 30 Vims Or 50 Vpp AC or 50 V DC Ascertain whether all mentione
57. RF connector X24 Then the receive signal is routed via RF cable W7 and RF connector X34 to the frontend of the RF unit In cooperation with the synthesizer the frontend demodulates the receive signal and digitizes the 3rd IF For further conversion the 3rd IF is made available to the radio controller Here it is demodulated to ob tain analog and digital signals for the data connector X5 analog AF signals for the audio con nector X4 and a serially coded signal The serially coded signal is taken via connector X11 cable W4 and connectors X7 and X8 to the front panel The analog LINE_RX and digital V 24 V 10 signals for data connector X5 are routed from connector X18 of the radio controller to the external connector X5 DATA where they may be tapped for further processing The analog AF signals are routed from connector X14 of the radio controller to the external connector X4 AUDIO of the radio Via aseparate GPS antenna time signals for synchronizing the radio may be received These signals are taken from the GPS antenna via RF socket X2 GPS ANT cable W2 and RF connector X111 to the radio controller Here the GPS signals are processed by a GPS re ceiver circuit a aa a ee ee Se ae eee 3 2 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Function 3 2 Tx Signal Path Signals processed for transmission may be analog microphone signals analog signals from the external connector X4 AUDIO or digital and analog
58. S MR300xH U The radio consists of the following assemblies Figure 2 9 Housing A9 Mod 02 and 03 Front ICN 4G A 231000 R D0894 00013 A 01 1 HF VHF UHF Antenna Connection Data Connection Audio Connection GPS Antenna Connection KR WD gt a ea a ee ee eee 2 12 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Figure 2 10 Housing A9 Mod 02 Rear The radio consists of the following assemblies 1 Battery Connection Service Manual I Level 6124 8346 82 04 ICN 4G A 231000 R D0894 00014 A 01 1 2 13 R amp S MR300xH U Figure 2 11 Housing A9 Mod 03 Rear SECURITY CODE 1 2 14 Battery Connection The radio consists of the following assemblies J Yj S S ICN 4G A 231000 R D0894 00015 A 01 1 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Function 3 Function see circuit diagrams sect 8 Drawings The Radio Controller RC communicates with the other radio modules and controls all inter nal processes It basically provides the following functions e Motherboard like functions distribution of signals for modules submodules and optional modules mechanical support for subassemblies e Narrowband and wideband audio functions e Provision of serial digital IF interface to RF modules e AF and IF signal processing e Provision of plain and secure link services EPM operation e Control of internal and external RF modules vi
59. Visual EX ANIM GUOWS ieciscicstciesute canteeawne sence even waeseacssxncanionan aacarcesrseutedeesanaeanecsspsuaniwansnoeentay 4 6 AA ECK TOS s TE E EE ersten tet a A 4 8 4 5 General Fault Isolation Procedures cccccscceeeeeeeeeeeeeeeeeeneeseeeeeeeseaneeeeesenseeneesaaes 4 10 4 5 1 PowerConsumMmpl N e isasssssirssninrinnai a Ei 4 12 4 5 2 Man Machine Interface Function cccccccsecesecceecaeeeeeeceeeceeeeeeeeeeeeeeseeseeceneeeeeeeeegeees 4 16 4 5 3 Audio Connector X4 and or Data Connector X5 cece ceeecceececceeeeeeeeeseeeeseeseeeeeeeseeeeas 4 17 4 5 4 HF V UHF Antenna Switch ccc ccsccceeeseseteseeeseeseneseneeteeceueteusecseeteeteneetaeeneetouss 4 19 AD GPS CONNGCIO X Z eise O AA A ANA A ANN 4 20 4 5 6 RF Power of Transmitter in Fix Frequency MOde cccccccceeeceeeeeeeeeeeeseeeeeeeeseeeeaees 4 21 4 5 7 Power at Rear Connector AG ves iin cvsasisctavewosectansnsiansasadinbenanisenboascawaanencqsws sosaciveausaieapaacawias 4 25 4 5 8 Frequency Accuracy of Transmitter in Fix Frequency Mode cccsscceeeceeeeeeeeeeees 4 26 4 5 9 Harmonic Emission of Transmitter in Fix Frequency Mode cccccsccceeeeeeeeseeeeeees 4 27 4 5 10 Transmitter Noise in Fix Frequency MOde cccccecccceeeeceeeeceeeeeeeeseeeeeseeeeseeeesaeeesans 4 28 4 5 11 Two tone Intermodulation of Transmitter in Fix Frequency Mode cccccseeeeeeees 4 30 4 5 12 VSWR Reduction of Transmitter in Fix Fr
60. a the Radio Control Bus RCB e Back up and erase functions e IBIT Initiated Built In Test PBIT Power on Built In Test CM Continuous Monitoring e Power management e Provision of several external communication interfaces like RS232 RS422 485 Ether net 10 100 Base T e Filtering of internal and external interfaces The Power Amplifier PA of the R amp S MR 300xH amplifies the carrier frequency in the fre quency range from 1 5 to 108 0 MHz with good linearity The maximum output power is 20 W in the HF range 1 5 to 29 9 MHz and 10 W in the VHF range 30 0 to 108 0 MHz The pow er amplifier has an integrated harmonics filter The Power Amplifier of the R amp S MR 300xU amplifies the carrier frequency in the frequency range from 25 to 512 MHz with good linearity The maximum output power is 10 W across the entire frequency range The Antenna Tuning Unit ATU R amp S MR 300xH only is directly connected with the power amplifier providing for optimum power amplifier matching to the antenna The RF Unit RFU consists of the Synthesizer module SYN and the Frontend FE The synthesizer generates all frequencies required for correct tuning local oscillator signals clock signals It covers the frequency ranges of 100 kHz to 512 MHz in reception and of 1 5 to 512 MHz in transmission For this purpose the synthesizer contains a 10 MHz 0 5 ppm reference oscillator The frontend ensures digital Q modulation of the transmit signal a
61. able see below Output power variable see below Modulation F3E without modulation signal Information displayed RF gt FRONT 3 2 At the radio set output power to 20 W and set the following transmit frequen 20 W 1 dB cies in succession R amp S MR300xH Frequencies 10 W 1 dB 1 983 MHz 10 1 MHz 20 1 MHz and 29 9 MHz R amp S MR300xH nee enn 25 1 MHz 42 1 MHz 70 1 MHz and 107 9 MHz R amp S MR300xU By using the communication analyzer check the output power at X1 for each frequency Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 3 3 At the radio set a transmit frequency of 1 983 MHz R amp S MR300xH or 25 1 MHz R amp S MR300xU and set the following output powers in succes sion By using the communication analyzer check the output power at X1 Output power 10 W only R amp S MR300xH 10 W 1 dB 5 W 5 W 1 dB 2W 2 W 2 dB 1W 1 W 2 dB 0 5 W 0 5 W 3 dB Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 3 4 At the radio set output power to 10 W and set the following transmit frequen 10 W 1 dB cies in succession Frequencies 30 1 MHz 60 125 MHz 90 1 MHz and 107 Hz R amp S MR300xH 108 1 MHz 185 1 MHz 310 1 MHz and 502 125 MHz R amp S MR300xU By using the communication analyzer check the output
62. ameter Frequency 364 910 MHz 1 IF 4 17 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lo at the signal generator until the audio level Laudio once again reaches the value acc to step 4 15 Make a note of the signal level Lo aa ee a R 4 70 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 4 18 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 5 Image Rejection UHF2 Range 5 1 At the radio change the following parameter Frequency fo 226 MHz 5 2 At the signal generator set the following parameters Frequency 226 MHz Signal level 110 dBm 5 3 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 5 4 At the signal generator change the following parameter Frequency 506 910 MHz 1 IF 5 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 5 3 Make a note of the signal level Lo 5 6 Calculate the image rejection as follows gt 80 dB Image rejection 110 dB Lo Possible
63. ameters Input level Linter 10 dBm Frequency offset 130 kHz 3 4 By using the signal generator at input 2 of the power combiner feed in an in terfering signal with the following parameters Input level Linter 10 dBm Frequency offset 260 kHz 3 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio Of the intermodulation distorsion product and note 3 6 Disconnect the two signal generators from the power combiner inputs and disconnect power combiner from radio 3 7 By using the signal generator at X1 ANT feed in an RF signal with the fol lowing parameters Frequency from 30 1 MHz Signal level Lo adjust acc to step 3 8 Modulation J3E 3 8 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator so that the audio level Laudio once again reaches the value acc to step 3 5 Make a note of the signal level Lo es eS eS SS ES SL ae ee ee a ee ee ee See See ees Service Manual I Level 6124 8346 82 04 4 61 R amp S MR300xH U Intemodulation Distortion No Activity fault elimination Nominal value 3 9 Calculate the intermodulation distorstorsion IP3 as follows IP3 gt 12 dBm IP3 0 5 Lintert Lo Linter 0 5 3 Linterf Lo Possible cause of fault Module power amplifier A2 and or connected modules defective 3 10 At t
64. arrier frequency fe 185 1 MHz Signal level 60 dBm Modulation ASE Modulation depth 70 Audio frequency 1 0 kHz 2 9 By using the audio analyzer at X4 B AUDIO_RX check the THD lt 5 Possible cause of fault Module RF unit A3 and or connected modules defective 2 10 At the radio change the following setting Frequency 502 125 MHz 2 11 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fe 502 125 MHz Signal level 60 dBm Modulation A3E Modulation depth 70 Audio frequency 1 0 kHz Service Manual l Level 6124 8346 82 04 No Activity fault elimination Nominal value 2 12 By using the audio analyzer at X4 B AUDIO_RX check the THD lt 5 Possible cause of fault Module RF unit A3 and or connected modules defective 2 13 Switch off test equipment and disconnect radio from test setup 2 14 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 18 RSSI Squelch R amp S MR300xH U RSSI Squelch 4 5 18 RSSI Squelch 1 Carry out the test steps Table 4 22 Table 4 22 RSSI Squelch Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 Connect signal generator at X1 ANT 1 4 Connect audio analyzer at X4 F SQL 2 RSSI Receive S
65. attery Change 5 2 9 Housing Sealing Cords Change R amp S MR300xH U Radio Controller Change 5 2 1 Radio Controller Change 1 Removing the Radio Controller a Put the tactical radio upside down on a work table so that the lower cover is acces sible from the top Figure 5 4 b Remove the lower cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket 1 Undo the nine captive hexagon socket head screws at the lower cover by using a socket head screw key 2 5 mm 2 Lift the lower cover carefully off Figure 5 4 Removing the Lower Cover ICN 4G A 231000 R D0894 20005 A 01 1 c Disconnect the Line Interface A6 only mod 02 03 eS a a ee ee a a a a a ee i a a a ee ene E ae See 5 6 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Radio Controller Change Figure 5 5 Radio Controller Undoing Cables ICN 4G A 231000 R D0894 10007 A 01 1 a Sena SSS Se SS a a ee a a Se a See Service Manual I Level 6124 8346 82 04 57 R amp S MR300xH U Radio Controller Change ea 1 Connectors 2 RF cables 3 Line Interface d Undo the four ribbon cables on the Radio Controller PCB To do so first of all undo the securing clips at the connectors Then pull off connectors carefully e Undo all RF cables and other connectors on t
66. ceeesneeeeteeesaeees 4 11 Power Consumption Fault Detection cece ccccccececeecceeeeseeeeeeeseeeeeeeeseeeseeeeseesaeeseeesaeeegaes 4 12 MMI Function Fault Isolation 2 0 0 ccc ccccc cece eee eece cece eee eeseneceeaeeeaeeseeeeeeeseeseneceeeseeeseeseeesaeees 4 16 Audio Connector X4 Fault Data Connector X5 Fault Isolation cece ceeceeeeeeeeeeaeeenees 4 17 HF V UHF Antenna Fault Isolation 0c cecceccceeceseeeeeeeseeeaeeeeeeeeaeeeseeeeeeeeseeeaeeageeeaeeeaees 4 19 GPS Connector X2 Fault Isolation 2 00 cece ccc eceeeeceeeeeeeeeeeeeeeeeeseeeeeeeeeseeeeseeeeseeseeenseeees 4 20 RF Power of Transmitter in Fix Frequency Mode Fault Detection cccccceeceeeee seen eee 4 21 Power at Rear Connector X6 Fault Detection ccc cccccccccceeeseeeeeeeeseeseeeeeseeeseeaeeesaeeeaaes 4 25 Frequency Accuracy of Transmitter in Fix Frequency Mode Fault Detection 4 26 Harmonic Emission of Transmitter in Fix Frequency Mode Fault Detection 8 4 27 Transmitter Noise in Fix Frequency Mode Fault Detection cceccceccceeeeeeeeseeeeeeeeaeeeees 4 28 Two tone Intermodulation of Transmitter in Fix Frequency Mode Fault Detection 4 30 VSWR Reduction of Transmitter in Fix Frequency Mode Fault Detection cceee 4 32 Sensitivity of Receiver in Fix Frequency Mode Fault Detection ccc cecc cece eeeeeeeeeeeees 4 34
67. ctor F LEX X4 1 6099 0641 02 545 Data Connector FLEX X5 1 6126 5350 02 550 DIN 965 ISR M4X6 A4 BL 1 6098 9039 00 560 DIN7985 M3X6 A4 Black 1 6098 9022 00 570 Special Receptacle X6 1 6118 3581 00 580 DIN7985 M3X8 A4 Black 2 6099 3470 00 590 Power Supply Il A5 1 6126 4525 02 600 Radio Controller A1 1 on request 610 Cabletie G1 2 1 0099 2181 00 620 Battery with Connector G1 1 6126 5138 00 710 HCM 3702 01 MANPACK 1 6086 3818 02 720 DSP Extension Board 1 6126 4919 02 730 Warranty Seal 1 6110 5304 00 998 Aerospace Marker 1 3584 7334 00 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Table 7 2 Spare Parts for R amp S MR 3000U Spare Parts Item No Designation Component no Quantity Ident no 10 Protection Gap 2 6094 9363 00 20 Cable W7 1 0048 7070 00 30 Flex Strip W6 1 6094 8309 00 40 Cable W1 1 6096 1347 00 50 Connector X421 1 6094 7483 00 100 RF Unit A3 1 6098 9651 03 110 Power Ampl V UHF A2 1 6096 1101 03 120 Amplifier Mainboard A21 1 6096 1253 02 130 Hybrid Ampl V UHF A22 1 6099 0806 02 140 Shielding Corner 1 6094 7648 00 155 Front Panel A4 1 6094 8009 04 160 Retaining Washer 1 0031 5104 00 170 Sealing FP 1 6094 9340 00 180 Cable W3 1 6094 7619 00 190 Rubber Keypad 1 6094 8044 00 200 Seal Screw 1 6099 0635 00 210 FP Control A41 1 6094 8050 03 220 Keyboard A42 1 6118 335
68. d requirements are met or all measures are tak en to establish the required condition Access Is to be gained to the unit module by observing the given instructions and safety precautions This means that a component module unit has to be in a state which does not give cause to complaints In case of trouble the replacement of modules is carried out in order to localize and eliminate the fault Components modules units which due to damage and or other defects no longer meet the respective requirements or components modules units which during troubleshooting were identified as the cause of fault are to be re placed This is a visual inspection of the outer appearance and completeness of a component module unit without manual interference by the examiner This does not include the necessary preparations and finishing work such as open ing and closing of covers or similar Notices The three different notices used in this documentation have the following meaning This heading is used to indicate that inaccurate observance or nonobservance of in structions or methods can cause injury or even fatal accidents or during an operation described hazardous material can be set free in the unit or system This heading is used to indicate that inaccurate observance or nonobservance of in structions or methods can cause damage to the unit This heading is used to draw the reader s attention to a particu
69. dB FM Mode Test In Band Ripple of Audio Frequency Response 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Modulation F3E Service Manual I Level 6124 8346 82 04 4 41 R amp S MR300xH U 4 42 Frequency Response of Receiver in Fix Frequency Mode ee ee No Activity fault elimination Nominal value 3 2 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fe 30 1 MHz R amp S MR300xH Signal level 47 dBm R amp S MR300xU Signal voltage 1 mV Modulation FM Frequency shift 6 25 kHz 3 3 Tune modulation signal and by using the audio analyzer at X4 B AUDIO_RX check the corresponding AF output level referred to the select ed frequency Determine the ripple factor by calculating the difference be tween maximum and minimum Specified values 300 Hz lt 2 5 dB 1000 Hz lt 2 5 dB 2700 Hz lt 2 5 dB Possible cause of fault Module RF unit A3 and or connected modules defective 4 FM Mode Test Adjacent Channel Rejection ACR VHF Range 4 1 At antenna terminal X1 ANT connect the power combiner 4 2 To check the SINAD value connect audio analyzer at X4 B AUDIO_RX 4 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Modulation F
70. e 3 3 At the radio set a frequency of 60 125 MHz R amp S MR 300xH U and 185 1 MHz R amp S MR 300xU E De ee ee ae eee 4 12 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Power Consumption a a No Activity fault elimination Nominal value 3 4 By using the digital multimeter ammeter check the current Temperature range 0 to 70 C R amp S MR 3000H without HPP and DSP lt 0 4A R amp S MR 300xH x 1 to 3 with HPP and or DSP lt 0 45 A Temperature range 0 to 50 C R amp S MR 3000U without HPP and DSP lt 0 42 A R amp S MR 300xU x 1 to 3 with HPP and or DSP lt 0 45 A Temperature range 50 to 70 C Only R amp S MR 300xU In temperature range 50 to 70 C the current from temperature range 0 to 50 C can increase at 0 02 A Temperature range 0 to 40 C R amp S MR 3000H U without HPP and DSP lt 0 6A R amp S MR 300xH U x 1 to 3 with HPP and or DSP lt 0 65 A Increased current because of Front Panel Display heating Possible cause of fault Module power supply A5 and or connected modules defective 4 Current Consumption Transmit Mode Modulation J3E 4 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 10 1 MHz R amp S MR 300xH 60 125 MHz R amp S MR 300xU Signal power 20 Wpep R amp S MR 300xH Modulation J3E 4 2 At X5 1 LINE_TX and X
71. e Service Manual I Level 6124 8346 82 04 4 11 R amp S MR300xH U Power Consumption alla ae 4 5 1 Power Consumption 1 Carry out the test steps Table 4 5 Table 4 5 Power Consumption Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 3 Only R amp S R amp S MR 300xU Activate high level VM_DETECT at X6 S11 rear connector 1 2 Switch on test equipment and radio 2 Current Consumption Power OFF Mode 2 1 At the radio set the following Mode switch OFF 2 2 By using the digital multimeter ammeter check the current lt 2 mA Possible cause of fault Module power supply A5 and or connected modules defective 3 Current Consumption Receive Mode 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 10 1 MHz R amp S MR 300xH 60 125 MHz R amp S MR 300xH U 185 1 MHz R amp S MR 300xU 3 2 By using the digital multimeter ammeter check the current Temperature range 0 to 70 C R amp S MR 3000H without HPP and DSP lt 0 4A R amp S MR 300xH x 1 to 3 with HPP and or DSP lt 0 45 A Temperature range 0 to 40 C R amp S MR 3000H without HPP and DSP lt 0 6A R amp S MR 300xH x 1 to 3 with HPP and or DSP lt 0 65A Possible cause of fault Module power supply A5 and or connected modules defectiv
72. e a note of the signal level Lo 3 24 Calculate the image rejection as follows gt 70 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 3 25 At the radio change the following parameter Frequency fo 111 MHz aa I a ie i eS ee ee ee 4 68 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 3 26 At the signal generator set the following parameters Frequency 111 MHz Signal level 110 dBm 3 27 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 28 At the signal generator change the following parameter Frequency 111 910 MHZ 2nd IF 3 29 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 3 27 Make a note of the signal level Lo 3 30 Calculate the image rejection as follows gt 70 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 3 31 At the radio change the following parameter Frequency fo 145 MHz 3 32 At the signal generator set the following parameters Frequency 145 MHz Signal level 110 dBm 3 33 By u
73. e of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 3 11 At the radio change the following setting Preamplifier ON n ee I eee 4 36 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Sensitivity of Receiver in Fix Frequency Mode No Activity fault elimination Nominal value 3 12 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 112 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 108 1 MHz 185 1 MHz 310 1 MHz 502 125 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 4 A3E Mode 4 1 Set the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency variable see below Modulation A3E BW 6 kHz Modulation depth 70 Preamplifier ON 4 2 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 110 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 30 1 MHz 60 125 MHz 90 1 MHz 107 9 MHz Possible cause of fault Module radio c
74. ector shows any discolouration caused by heat its mating connector is also defective Both must therefore be replaced Examine the protective caps of the connectors at the front of R amp S M3TR every two years if a white film has formed on the surface When such a film is detected it is absolutely manda tory to replace the affected caps Dispose of the replaced caps in line with the waste disposal regulations in force To eliminate any faults replace the module s found to be defective If the fault per sists the entire unit will have to be replaced e Make sure that all screws are present Replace any missing screws e Carefully examine connectors for broken corroded or bent contacts pins or sockets If necessary replace defective connector s a a ee ee ee eee 4 6 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Figure 4 3 Protective Caps for Connectors of R amp S M3TR 1 Caps for Connectors Service Manual I Level 6124 8346 82 04 ICN 4G A 231000 R D0894 20002 A 01 1 4 7 R amp S MR300xH U Leak Test 4 4 Leak Test Before starting the pressure drop measurement and immersion test make absolutely sure that the tactical radio is disconnected from power Pull off all external cables and put the protective caps on the connectors The pressure drop measurement must be carried out before the immersion test This test only needs to be performed if the tactical radio was opened for t
75. eeensaes 5 9 Removing the Upper Cover ccccccccscccseeeceecseeecueeceeeecueccueeeceeseueecueeesueesueseueeesesssusesaeesaeeenaes 5 10 RF Unt Removal ecient cesta aa xn ant vec bse i a a a rte edtnndnecbached toto 5 12 R amp S MR 300xH Removing the Upper Cover ccccccccccseceeeeeeeeeeeeeeeeeeeseeeaeeeeseesseeeaeeesaeeeaaes 5 15 Antenna Tuning Unit Undoing SCrEWS ccccccceccceececeecceeeeseeeseeeseeeeaeeeseeeseeeeseeesueeseeesaeeesaes 5 16 Antenna Tuning Unit REMOVAl ccccccccccseceseeeceeeeeeeeseeeseeeeseeeseeeseeeeseeeseeeaeeeeseeesneeseeesaeeegaes 5 17 R amp S MR300xH Removing the Upper Cover ccccccccccseceeeeceeeeeeeeeeeeeeseeeaeeeeseeeseeeseeesaeeeaaes 5 18 Power Amplifier Undoing Screws ccccceccseeecseecseeecueccaeeeceeecaeeceeceeeecaeeeueeeseessaeesaeesseeeeaes 5 19 Power Amplifier Removal ccccccccsecceseceeeeseeseeeeeeeeeeeeeteneteeeegeeseetaeesaeeeeeteneceeesneeeeteeeeaeees 5 21 R amp S MR300xU Removing the Upper Cover cccccccceccceceeeceeeeeeeeeeeeeeseeeeeeeeseeeseeeseesaeeeaees 5 23 Power Amplifier Undoing Screws ccccccccseeceeecceeecuecceeeceeecueecaeeeeeeecessueeeceeseaeecaeesseeenaes 5 24 Power Amplifier Removal ccccccccsecceseceeeeseeeeteeeeeeeseeseneceeseeeaeeteeesaeeeeetneceeesneeseeteeenseees 5 26 Removing the Lower COVED cccccccsscccseeeseeceucesuceceucecuecsueeeseeseucecueeseueesuecsueeeceessusesaeesaee
76. enaes 5 29 Power Supply Undoing Cables cccccccccccsscecseeceeecueceeeeeceeceucecueeceusecueceueeeseeseusesaeessueesaes 5 30 a acc cc ee Service Manual I Level 6124 8346 82 04 3 R amp S MR300xH U List of Figures Figure 5 21 Figure 5 22 Figure 5 23 Figure 5 24 Figure 5 25 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 6 5 Figure 6 6 Figure 6 7 Figure 6 8 Power Supply Removal ccccccccceeccceececee cece cece eeeceeeeeeeeseeeeseueesseeeeseeeseeeeseaeeseueesaneessneenaes 5 31 Front Panel Undoing Quick ReleaSe Fasteners ccccccccceccceeeceseeeeseeeeceeceseeeeseeesseeeeseeeeaes 5 32 R amp S MR 3000U Front Panel Removal 0 cece cece ce ceccececeeceeeeeececeaececeeaeeeceeaeseseeneaesneeeaeeneas 5 33 Removing the Lower COVED cccccsssscecsseeeceecececeuseccueucecegseeeceueeessaeesaugeeesseeeessaeeessaneessneeees 5 34 Replacing the Backup Battery scccitvsseneastvevarersstasvsanteamnnduernsawevorseiowshaddad seawedeoveimmcetauvestnieastiasties 5 35 Loading without Docking Station c cc cccccsecceeeseeeee eee eeeaeeeeeeeeeeeeeeeeeeseeeeeeeeeeeeseeeeeeseeeesaeeeeesees 6 4 Loading Configuration via the Docking Station Ethernet Interface at the Unit Frontside 6 4 Loading Configuration via the Serial Interface DATA at the Unit Frontside TOE FE COMM CIOS arrsa ne E a Ea E tacaud ee Eai 6 5 Select a network adapter 0 0 eceecccseccceesecceeeeceececeeeeesee
77. eps Table 4 18 Table 4 18 Desensitization of Receiver in Fix Frequency Mode Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 To check the SINAD value connect audio analyzer at X4 B AUDIO_RX 1 4 Connect signal generator at X1 ANT 2 Desensitization HF VCO 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency variable see below Modulation J3E Audio frequency 1 kHz Preamplifier OFF AGC OFF MGC 70 dB BW 2 4 kHz 2 2 At both radio and signal generator set a receive frequency of 10 1 MHz At gt 28 dB signal generator set RF level 80 dBm Reduce the set MGC value 70 dB until the RMS audio level is in the range of 4 to 6 dBm By using the audio analyzer check the SINAD without audio psophometric weighting filter Possible cause of fault Module RF unit A3 and or connected modules defective 2 3 By using the signal generator feed in an additional CW signal at a frequency offset of 30 kHz and a power of 15 mV EMF 2 4 By using the audio analyzer check the SINAD without audio psophometric gt 20 dB weighting filter Possible cause of fault Module RF unit A3 and or connected modules defective 2 5 Switch off test equipment and disconnect radio from test setup 2 6
78. equency 25 1 MHz Modulation PSE Bandwidth 12 5 kHz R amp S MR300xH 25 kHz R amp S MR300xU Output power PWR 10 W Information on display FRONT gt 50Q 5 5 Activate SILENT LA at X6 S22 rear connector 5 6 Activate PTT1 at X4 K front connector o Check the PTT1 function is blocked Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective Service Manual l Level 6124 8346 82 04 4 53 R amp S MR300xH U Miscellaneous Functions SSS SS SSS SS SS SS SS SS SS SS SS SS SS ee ee No Activity fault elimination Nominal value 5 8 By using the communication analyzer at X6 C2 check the output power atthe Pout 0 W load resistor Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective 5 9 Check if TX LED is lighted must not turn red Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 and or connected modules defective 5 10 Switch off test equipment and disconnect radio from test setup 5 11 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 20 Antenna Tuning Unit aaa a a ee eee a ee ee 4 54 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Antenna Tuning Unit 4 5 20 Antenna Tuning Unit 1
79. equency Mode cccceeeeeeeeeeeeeeeeeeeees 4 32 4 5 13 Sensitivity of Receiver in Fix Frequency MOde cccccceecceececeeeseeeseeeeseeeseeeseeeeseeees 4 34 4 5 14 Desensitization of Receiver in Fix Frequency Mode ccccccececeeeceeeseeeeeeeeeeeeeeeens 4 40 4 5 15 Frequency Response of Receiver in Fix Frequency MOde cccccceecceeeeeeceeeeeeeaees 4 41 4 5 16 IF Recjection of Receiver in Fix Frequency Mode ccccecccsseeecseeeeeeeeeseeeeseeeeseeeenees 4 45 4 5 17 Total Harmonic Distortion cccccccccc cece eee eeeceeceeeeaeeceeeseecaueceeeseecseeeeeeteeeeeeaueceeeseeeaaes 4 47 49109 RSSI eo S gt 61 ee ee eee ee ee ne ee ee eee een eee ee 4 50 4 5 19 Miscellaneous FUNCTIONS cc ccc ceccc secs eee eeeteeceeeeeeeseeseeceneceeeseceueeseeteetaeseeecseeseeeaaes 4 52 a a ee ee Service Manual I Level 6124 8346 82 04 1 R amp S MR300xH U Table of Contents 4 5 20 Antenna Tuning ITA secede se tciraetcay to cincly deed are atelnesdaaian ceik anesansetek baniean stiseielaanctvlstt niedadacdanavenedoaneil 4 55 Ae 21 SS OUMOUS EMISSIONS eccer en a sanact ead aamense cy EE EE ETE E O i 4 56 4o22 FOS SI OC ON sanen RAE EEA E AAAA EREA EEEE A 4 58 4 5 23 Intemodulation Distortion ccc eccc cece cece ceeeeceeeceeeee cess esse eeseeeeseeeseueeeeeeseeeseeseeeeseeees 4 60 45 24 Wegned S N FRAN sicsapasess tenes ccep sanceneantinaparveaeetoncezedsationceedee w
80. equency are identical the frequency standard meets the required specifications the radio hardware may be defective Please contact the service TUNE RANGE FAILURE Tuning failed because the possible tuning range was exceeded If the frequency set on the radio and the reference frequency are identical the frequency standard meets the required specifications the radio hardware may be defective Please contact the service FLASH FAILURE The determined calibration values could not be stored in the FLASH memory Repeat the cal ibration procedure If the error persists the radio hardware is defective please contact the service R ee ee Se ae eee 6 14 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Changing the Frequency 6 2 1 Changing the Frequency By means of softkey FRQ Frequency the operator can change the transmit and or receive frequency In RX mode the effective RX frequency e g 55 250 kHz is displayed For PTT the effective TX frequency e g 55 250 kHz is displayed RX frequency TX frequency Starting point Main page of FF menu CUFF FIZEO FREQUENCY OP CFG EE Step Control Action Note 1 Press Open the opera tional page of OOFF Shed tis Fixed Frequen Aa SSO OOOkKH C101 OP oy Fac 2 9 Press any of The display to these keys changes OOFF SFA tib WXYZ Ho 200 000kHz C101 FRG MOO Rsi RCL 3 Press Open the editor window Ax FREGUENCY SS 250 000 kHz FRQ CHA PAC
81. ery holder battery holder clamp pull up the battery holder AON Mod 02 03 is illustrated Using the new Radio Controller 6126 4877 02 the Backup Battery is fixed with 3 cable tie fastener Top edge of cover must not protrude 4 Press the battery holder 2 together on both sides 3 simultaneously and pull the bat tery with battery holder off to the top 4 5 To install a new backup battery into the radio controller proceed in the reverse order of removal e a a a a ee ee ee Service Manual I Level 6124 8346 82 04 Dyes When installing a battery make sure that the battery cables do not get caught any where It is recommended to replace the backup battery of the radio controller at regular intervals after five years at the latest 5 2 9 Housing Sealing Cords Change 1 Replacing the sealing cords of the tactical radio will only be necessary if leakage was found in the immersion test sect 4 4 Leak Test 2 Open the tactical radio sect 5 Replacement of Modules 3 Remove the sealing cords from both covers 4 Insert the new sealing cords part no 6094 9357 00 into the grooves in the covers 5 Close the tactical radio sect 5 3 Assemble Procedures 6 Repeat the pressure drop measurement and immersion test sect 4 4 Leak Test 5 3 Assemble Procedures 1 Assemble the tactical radio in the reverse order of the disassembling sect 5 Replacement of Modules R amp S MR300xH U Sys
82. eseeseeseeeeseeeeseeesseeseuseeseeeesaeessneeseeeees 6 6 Select configuration file 0 nnnnnneeneenensnnerenoenosrrrerersrrssrrrrressrrsrresrnrsrrnsrrrnrrenrresrrsrreenrrsrrrnnernnene 6 7 SCISCE COMMOUPALION MG searen a E e E O AEE E 6 8 Loading Configuration for SECOM H SECOM V ccccceecceeseeeeeeeeeeeeeeeeeeeeeeeesaeeeeeseeeeeeeeeeees 6 10 I Foci SEUD eE E eee ee eee ee 6 12 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Table 1 1 Table 4 1 Table 4 2 Table 4 3 Table 4 4 Table 4 5 Table 4 6 Table 4 7 Table 4 8 Table 4 9 Table 4 10 Table 4 11 Table 4 12 Table 4 13 Table 4 14 Table 4 15 Table 4 16 Table 4 17 Table 4 18 Table 4 19 Table 4 20 Table 4 21 Table 4 22 Table 4 23 Table 4 24 Table 4 25 Table 4 26 Table 4 27 Table 4 28 Table 4 29 Table 4 30 Table 6 1 Table 7 1 Table 7 2 List of Tables Difference between the Tactical Radios cccccccccccceeeceeeese eee eeeeeeeeeeeseeeseeeeseeeseeeeeeesseeeeeeaes 1 2 ESS OT Tost CUNO VW se steee e cc gerscetaeenet ea sneer anacec ine ge esucetese smaneeaseecansaeeecenat sean sansseewenesvaasvecses 4 1 E SS Use ysis deters essen oie rvs soa bape sits cep A E areas cannes T A N E E E 4 8 Fault Isolation Crossreference LISt c ccc cecceeecececececeeeeeeceeeeeeceueceeeeeeeseeeseessneeeeseeeeeeaeeeaees 4 10 Replacement Crossreference List cccccceecesecceeeeeeeeeeteseceeeeeeeeeetaeeeaeeeeetge
83. eset switch MAN Submenu OPERATION RX Frequency variable see below Modulation Foe Frequency shift 2 5 kHz Bandwidth 12 5 kHz Preamplifier OFF 32 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 104 dBm at 301 225 MHz By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 1 983 MHz 10 1 MHz 20 1 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 3 3 At the radio change the following setting Preamplifier ON 3 4 At both radio and signal generator set the following receive frequencies in gt 10 dB SINAD succession see below At signal generator set RF level 109 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 1 983 MHz 10 1 MHz 20 1 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive e a a a a a a a ee ee Service Manual I Level 6124 8346 82 04 4 35 R amp S MR300xH U Sensitivity of Receiver in Fix Frequency Mode No Activity fault elimination Nominal value 3 5 At the radio change the following settings Frequency shift 6 25 kHz Bandwidth 25 kHz Preamplifier O
84. ess and Contrast 2 1 Check readability of display by adjusting brightness and contrast Adjust brightness and contrast brightness and contrast both adjustable Possible cause of fault Module front panel A4 and or connected modules defective 2 2 Switch off power supply and disconnect radio from test setup 2 3 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 3 Audio Connector X4 and or Data Con nector X5 aa ee ee eee eee 4 16 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Audio Connector X4 and or Data Connector X5 SSS SS SSS SS SS SS SS ae 4 5 3 Audio Connector X4 and or Data Connector X5 1 Carry out the test steps Table 4 7 Table 4 7 Audio Connector X4 Fault Data Connector X5 Fault Isolation 1 No Activity fault elimination Preparations Nominal value 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 42 1 MHz Modulation F3E Tieg 5 kHz Volume control maximum volume 1 4 Connect signal generator at X1 ANT and feed in FM signal with the follow ing parameters Frequency 42 1 MHz Signal level 40 dBm Ta dio 1 kHz ljev 5 kHz Audio RX Output of Audio Connector X4
85. etiesetenceceesnesacteaceesonteeseeion 4 64 4929 Image TSC CUO etree inn atge cerca perce nds n aaa oleae TAEAE Eaa S eE TEAOR Eiin 4 65 Aoo DOON 9 een ne eC E E E ee ree 4 73 5 Replacement Of Modules cccccceeeeeeeeeneeeeeeneeeneeenseeeseneseneeeeeenesones 5 1 D1 DISASSEMDIE PFOCCOUNGS viicscticsis cicescscusicstacriseossnrisastscdavensannnrenciescdasarceanecdancguiaceareutes 5 1 5 2 Replacing Individual MOCUIeS cccccseeeeeeeeeeeeeeeeseeseeeeneeeeseeneeeessanenenseeeeseneneaenaes 5 5 32 1 Rado COMMON CT Ce Cease seine head pnn ie siete EEEa KE a TE iE 5 6 JA RFU Chango sena en EAE ee eee 5 10 5 2 3 Antenna Tuning Unit Change cc cccccceeeeeeeeeeseeeceeeeeeeeeseaeeeaaeeeseeeeeeeeessaeessaeeeaees 5 14 5 2 4 HF VHF Power Amplifier Change cccccccccsccecesecceneeseeeececeeseeeesaeeesegeeseueeseneensaees 5 18 5 2 9 VHF UHF Power Amplifier Change ccccccccseeceecceecceeesseeceeeccueeceusceeeseeeesueeseaeeeas 5 23 5 2 6 Power Supply CNAnge ccccccccsccceccceeeccsecceecceeeceueceeeseeesueeceaeesseeseueesueseaeesueessaeegas 5 28 L2 FON PAN Gai Osh recast creo a ee E TE eTEN E EAEE AE 5 32 5 2 8 Radio Controller Battery Change cc cecceceeeeceeeeceeeeeeeeeceeeeeaeeeeseeeseeeesseeesneenaees 5 34 5 2 9 Housing Sealing Cords CHANGEC cccccceecceseeeeceeeeceeeeeeeeeceeeeeseeeseeeeseeesseeeseneeeaees 5 37 99 ASSECMDIC PIOCCOQULCS si cicisesseccetia
86. ge Figure 5 12 Antenna Tuning Unit Removal ICN 4G A 231000 R D0894 20008 A 01 1 2 Installing the Antenna Tuning Unit To install a new or repaired Antenna Tuning Unit unit proceed in the reverse order of re moval a Sena SS Se SS Sa ee a a a ee a a Se ee See Service Manual I Level 6124 8346 82 04 5 17 R amp S MR300xH U HF VHF Power Amplifier Change 5 2 4 HF VHF Power Amplifier Change 1 Removing the HF VHF Power Amplifier from R amp S MR300xH a Put R amp S MR300xH on a work table in operating position so that the upper cover is accessible from the top Figure 5 13 b Remove the upper cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket Figure 5 13 R amp S MR300xH Removing the Upper Cover UPPER COVER Pi TE P put raid E T pen a maena g 5 a VT a p ig cer ste ABE i pme 2 m are 4 pe B ie E Fy 7 Ww 4 aoe ane J fl FLN a PL Fell o a D ICN 4G A 231000 R D0894 20004 A 01 1 eUndo the nine captive hexagon socket head screws at the upper cover by using a socket head screw key 2 5 mm eLift the upper cover carefully off c Remove the Radio Frequency Unit according to sect 5 2 2 RF Unit Change d Remove Intermediate Plates a aa I eee 5 18 Service Man
87. he Radio Controller PCB carefully by using an extracting hook f Undo the eight hexagon head screws fixing the Radio Controller in the housing of the tactical radio Figure 5 6 Figure 5 6 Radio Controller Undoing Screws r L IRA mel 1 EAEG S aS SPs SShee8 Sm rA lazai E ICN 4G A 231000 R D0894 10008 A 01 1 g Liftthe Radio Controller vertically out Figure 5 7 The connection to the power am plifier connector will come undone automatically a S E E I I E TY 5 8 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Radio Controller Change Figure 5 7 Radio Controller Removal only mod 02 03 ICN 4G A 231000 R D0894 10009 A 01 1 2 Installing the Radio Controller To install a new or repaired radio controller proceed in the reverse order of removal a a aaa ee Service Manual l Level 6124 8346 82 04 5 9 R amp S MR300xH U RF Unit Change ae 5 2 2 RF Unit Change 1 Removing the RF Unit a Put the tactical radio on a work table in operating position so that the upper cover is accessible from the top Figure 5 8 b Remove the upper cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket Figure 5 8 Removing the Upper Cover UPPER COVER
88. he following frequencies repeat steps 3 1 to 3 9 from 60 125 MHz IP3 gt 12 dBm from 107 9 MHz IP3 gt 12 dBm from 90 1 MHz IP3 gt 12 dBm Possible cause of fault Module power amplifier A2 and or connected modules defective 3 11 Switch off test equipment and disconnect radio from test setup 4 Only R amp S MR300xU Intermodulation Distortion UHF Range 4 1 At the radio change the following parameter Frequency from 108 1 MHz 4 2 At antenna terminal X1 ANT connect the power combiner 4 3 By using the signal generator at input 1 of the power combiner feed in an in terfering signal with the following parameters Input level Lintert 10 dBm Frequency offset 130 kHz 4 4 By using the signal generator at input 2 of the power combiner feed in an in terfering signal with the following parameters Input level Linterf 10 dBm Frequency offset 260 kHz 4 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio Of the intermodulation distorsion product and note 4 6 Disconnect the two signal generators from the power combiner inputs and disconnect power combiner from radio 4 7 By using the signal generator at X1 ANT feed in an RF signal with the fol lowing parameters Frequency from 108 1 MHz Signal level Lo adjust acc to step 4 8 Modulation J3E 4 8 By using the audio analyzer at X4 B AUD
89. he top Figure 5 10 b Remove the upper cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket E a ee ee ae eee 5 14 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Antenna Tuning Unit Change Figure 5 10 R amp S MR 300xH Removing the Upper Cover UPPER COVER unr a raat E SSS Se t maaa i ri ZL E Ble E ner J Li is ee 2 anat A pen I ata oy E ues AN n FLN EL mr tt z Eh ICN 4G A 231000 R D0894 20004 A 01 1 1 Undo the nine captive hexagon socket head screws at the upper cover by using a socket head screw key 2 5 mm 2 Lift the upper cover carefully off c Remove the Radio Frequency Unit according to sect 5 2 2 RF Unit Change d Remove Intermediate Plate e Undo the two screws at the Antenna Tuning Unit Figure 5 11 fixing it within the R amp S MR 300xH a aa Service Manual l Level 6124 8346 82 04 5 15 R amp S MR300xH U 5 16 Antenna Tuning Unit Change Figure 5 11 Antenna Tuning Unit Undoing Screws 5 O z ICN 4G A 231000 R D0894 20007 A 01 1 f Get hold of the strap and pull the Antenna Tuning Unit carefully out to the top Figure 5 12 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Antenna Tuning Unit Chan
90. ignal Strength Indication Squelch 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Modulation J3E RSSI squelch ON RSSI level 20 dB Volume maximum 2 2 Check if AF output is muted muted Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 2 3 By using the audio analyzer at X4 F SQL check the impedance high Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 2 4 By using the signal generator at X1 ANT feed in an RF signal with the fol lowing parameters Frequency 30 1 MHz Signal level 23 dBuV 2 5 Check if AF output is enabled enabled Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 2 6 Check if TX LED is lighted green Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive E me a ee a 4 50 Service Manual I Level 6124 8346 82 04 No Activity fault elimination Nominal value 2 7 By using the audio analyzer at X4 F SQL and X5 3 PTT_OUT SQL low check the impedance without Rx signal high Possible cause of fault impedance Module radio controller A1 RF unit A3 and or connected modules defec tive 2 8 Switch off test equipment a
91. imeter ammeter check the current Possible cause of fault Module power supply A5 and or connected modules defective lt 1 3A R amp S MR 300xH lt 1 5A R amp S MR 300xU Current Consumption Standby Mode Modulation F3E 6 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION STANDBY Frequency 60 125 MHz Modulation Foe 4 14 Service Manual I Level 6124 8346 82 04 No 6 2 Activity fault elimination By using the digital multimeter ammeter check the current R amp S MR 3000H U without HPP and DSP R amp S MR 3000H U x 1 to 3 with HPP and or DSP Possible cause of fault Module power supply A5 and or connected modules defective Nominal value 0 1 to 0 22 A 0 1 to 0 27 A 6 3 Switch off test equipment and disconnect radio from test setup 6 4 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 2 Man Machine Interface Function R amp S MR300xH U Man Machine Interface Function SSS SS SSS SS SS SS SS SS SS SS SS SS SS ee Se 4 5 2 Man Machine Interface Function 1 Carry out the test steps Table 4 6 Table 4 6 MMI Function Fault Isolation No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on power supply and radio 2 Brightn
92. ination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Spurious Emissions HF Range 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 2 fo 10 1 MHz R amp S MR300xH 25 1 MHz R amp S MR300xU Modulation F3E without modulation signal at audio line input X4 D AUDIO_ TX TX output power 20 W R amp S MR300xH 10 W R amp S MR300xU 2 2 By using the communication analyzer check the spurious emissions non lt 40 dBc harmonic for f gt 0 95 f or f lt 1 05 fe R amp S MR300xH Possible cause of fault lt 70 dBc D l R amp S MR300xU Module power amplifier A2 RF unit A3 and or connected modules defec tive 29 At the radio change the following parameter Frequency f 60 125 MHz 2 4 By using the communication analyzer check the spurious emissions non lt 70 dBc harmonic for f lt 0 95 f or f gt 1 05 fe R amp S MR300xH Possible cause of fault lt 75 dBc pe l R amp S MR300xU Module power amplifier A2 RF unit A3 and or connected modules defec tive 2 5 At the radio change the following parameter Frequency 2 fe 29 9 MHz R amp S MR300xH 107 9 MHz R amp S MR300xU 2 6 By using the communication analyzer check the spurious emissions non lt 40 dBc har
93. lar fact R amp S MR300xH U User Informations User Informations Service Manual The product may be opened only by authorized specially trained personnel Before any work is performed on the product or before the product is opened it must be dis connected from the AC supply network Otherwise personnel will be exposed to the risk of an electric shock Purpose of the Manual This Manual provides all information the service staff need to maintain intermediate level of repairs It contains the troubleshooting instructions down to module level In case of trouble this al lows straightforward error localization as well as easy replacement of the module Measuring Units In this Manual the basic SI measuring units and units coherently derived from them are used by preference In exceptional cases units legally derived from the SI units acc to DIN1301 may also be used Level 6124 8346 82 04 lil R amp S MR300xH U Abbreviations Abbreviations ACR adjacent channel rejection AF audio frequency ALC automatic level control ALE3G Automatic Link Establishment 3 Generation ANT antenna ATU antenna tuning unit BP battery pack CCITT Comit Consultatif International T l graphique et T l phonique CM continuous monitoring CNR combat net radio CW continuous wave DSP digital signal processing proce
94. librate the oscillator the test equipment in the test equipment list Table 7 2 is required Equivalent test equipment may be used Special tools are not required Table 6 1 List of Test Equipment Item Test equipment required data Equipment recommended Ordering code by Rohde amp Schwarz 1 10 MHz frequency standard conventional workshop model Af lt 0 01 ppm 10 dBm to 0 dBm 2 Tactical Radio Operating Documentation When using a docking station or an R amp S MR 3000H set the RF input output port man ually to FRONT 50 OHMS Do not switch off the radio or disconnect the antenna while calibration is in progress the pro cess takes 1 to 2 minutes a a Service Manual I Level 6124 8346 82 04 6 11 R amp S MR300xH U Calibration Figure 6 8 Test Setup 1 Frequency Standard Connector X1 3 Tactical Radio ICN 4G L 231000 R D0894 00999 A 01 1 To calibrate the oscillator proceed as follows Step Control Action Note 1 Switch on Switch on all test equipment and wait for the clock to sta bilize 2 Connect Connect the frequency standard to the antenna connector X1 see Figure 6 8 3 Turn the mode 6 12 switch to RX Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Calibration Step Control Action Note 4 Turn the preset The display 2 3 4 page selector to changes OOFF H t 1 MAN sai 5 44 225 00
95. llumination underwater mirror el WxHxD gt 199x74x300 mm 11 Climate chamber Hereus HT4010 12 Atmospheric pressure difference measurement Schreiner system LPC 820 13 Test chamber for pressure drop conventional workshop mod el 14 Power combiner conventional workshop mod el Service Manual l Level 6124 8346 82 04 4 1 4 2 Test Setup 1 Arrange test setup Figure 4 1 or Figure 4 2 respectively Test Setup R amp S MR300xH U Figure 4 1 R amp S MR 300xH U Test Setup 1 JazAjeuy uoljed IUNWWOX VG OGA tz Ajddng 1amog sacaid om JO JeIBUS 10 e19Ua5 Jezhjeuy Ja yOW NIAl reuBis 9 JaUIqQUiOD jeubls olpny e161 10329A Jamod oipny pX juawainsea n yuana J0 NXOOE YIN SJH oIpey IE91 9eL 4HN JHA 10 e ead Sx HXOOE YW SRY OIpeY E9H9eL AHA SH LNY Sd ZX LNY LX O 0G D0894 00008 A 01 1 R ICN 4G A 231000 4 3 Service Manual l Level 6124 8346 82 04 Test Setup R amp S MR300xH U Figure 4 2 R amp S MR 300xH U Test Setup 2 JazAjeuy uoles IUNUWILUOD GP 0z Joyenus y oipny 7x VS O0ArZ NXOOE YW SHY i i olpey je91 98 1 JHN JHA 1O e eq sx HXO0OE YW SHH OIPEY IESEL AHA SH INV Sd5 ZX LNV LX ICN 4G A 231000 R D0894 00009 A 01 1 Service Manual I Level 6124 8346 82 04 4 4 2 Switch on test equipment and Radio R amp S MR300xH U Visual Examinations 4 3 Visual Examinations If a conn
96. lly connected with the radio a aa i a a Service Manual I Level 6124 8346 82 04 2 1 R amp S MR300xH U 22 Figure 2 1 Tactical Radio Design The radio consists of the following assemblies ICN 4G A 231000 R D0894 00002 A 01 1 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U The radio consists of the following assemblies a a aw a a cc a a ee el HF VHF UHF Antenna Connection Battery Pack Data Connector Audio PTT Connector Protective Flap ERASE Key GPS Antenna Connection Volume Control LED s Display 9 Menu Navigation Key 10 Preset Page Selector 11 Quick release Fastener 12 Mode Switch CON OO OBR WBN gt a The modules of the tactical radio are accommodated in a shielding metal housing Located in the left front part of the housing are antenna connectors for HF VHF UHF GPS and an erase key covered At the right there are a data connector and an audio PTT connector Captive rubber caps are available to protect the antenna data and audio PTT connectors when they are not used The centre of the front is occupied by the detachable front panel which is held in place by two quick release fasteners The front panel contains an LC display with illumination and the following control elements e Volume control e Mode switch e Preset page selector e Menu navigation key e Keypad with softkeys and keys for fixed functions In addition the front panel contains three LEDs t
97. minal value 2 6 Only R amp S MR300xH At radio set an output power of 10 W and the following transmit frequencies in succession Frequencies 30 1 MHz 60 125 MHz 90 1 MHz and 107 9 MHz lt 34 dBpep By using the communication analyzer at X1 check the intermodulation dis valid for greatest inter tortion relative to PEP at each test frequency modulation product IM3 IM5 IM7 It is necessary to measure intermodulation products IM3 IM5 and IM7 for each test frequency Possible cause of fault Module radio controller A1 power amplifier A2 and or connected modules defective 3 Two tone Intermodulation Distortion at Power Supply 20 VDC 3 1 Set power supply to 20 VDC 3 2 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 10 1 MHz Output power 20 W R amp S MR300xH 10 W R amp S MR300xU Modulation J3E upper sideband 3 3 By using the communication analyzer at X1 check the intermodulation dis tortion relative to PEP at each test frequency It is necessary to measure intermodulation products IM3 IM5 and IM7 for lt 32 dBpgep each test frequency R amp S MR300xH Possible cause of fault lt 36 dBpep R amp S MR300xU Module radio controller A1 power amplifier A2 and or connected modules defective valid for greatest inter modulation product IM3 IM5 IM7 3 4 Switch off test equipme
98. monic for f gt 0 95 f or f lt 1 05 fo R amp S MR300xH Possible cause of fault lt 75 dBc pi l R amp S MR300xU Module power amplifier A2 RF unit A3 and or connected modules defec tive E a ee ee ae eee 4 56 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Spurious Emissions a a ee No Activity fault elimination Nominal value 2 1 By using the communication analyzer check the spurious emissions non lt 70 dBc harmonic for f lt 0 95 f or f gt 1 05 fo Possible cause of fault Module power amplifier A2 RF unit A3 and or connected modules defec tive 3 Spurious Emissions VHF Range 3 1 At the radio change the following parameters Frequency 2 fe 90 1 MHz R amp S MR300xH 225 1 MHz R amp S MR300xU TX output power 10 W 3 2 By using the communication analyzer check the spurious emissions non lt 75 dBc harmonic for f lt 0 95 f or f gt 1 05 fe R amp S MR300xH Possible cause of fault lt 70 dBc Di l R amp S MR300xU Module power amplifier A2 RF unit A3 and or connected modules defec tive 3 3 Switch off test equipment and disconnect radio from test setup 3 4 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 22 Crossmodulation a Sena SSS SS RS Se a a es a a Se eee a eee Service Manual I Level 6124 8346 82
99. mplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 2 6 At the radio set output power to 10 Wpep and set the following transmit fre 10 Wpep 1 dB quencies in succession Frequencies 30 1 MHz 60 125 MHz 90 1 MHz and 107 9 MHz R amp S MR300xH 108 1 MHz 185 1 MHz 310 1 MHz and 502 125 MHz R amp S MR300xU By using the communication analyzer check the output power at X1 Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 2 7 Atthe radio set a transmit frequency of 30 1 MHz and set the following output powers in succession By using the communication analyzer check the out put power at X1 Output power 5 Wpep 5 Wpep 1 dB 2 Wpep 2 Wpep 2 dB 1 Wpep 1 Wpep 2 dB 0 5 Wpep 0 5 W 3 dBpep Possible cause of fault Module radio controller A1 power amplifier A2 RF unit A3 ATU HF A10 only R amp S MR300xH and or connected modules defective 2 8 Disconnect AF generator of audio analyzer from X5 1 X5 22 3 Single Carrier Power in FM Mode Service Manual l Level 6124 8346 82 04 R amp S MR300xH U RF Power of Transmitter in Fix Frequency Mode No Activity fault elimination Nominal value 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency vari
100. nd digitizing of the 3rd IF The Front Panel FP is the Man Machine Interface MMI and also the audio interface of the radio Operation is supported by control elements a display and LEDs Communication with the remote station is performed via the connected handset From the external battery voltage the Power Supply PS generates the voltages required for operation 2 5 VDC 3 3 VDC 5 VDC 6 VDC 6 VDC 8 2 VDC 22 VDC 150 VDC a See SSS SS ES Se a a a ee a a Se ae seer Service Manual I Level 6124 8346 82 04 3 1 R amp S MR300xH U Function SSS SS SSS SS SS SS SS SS SS SS Se See As optional battery either the Battery Pack BP R amp S IB 3001with rechargeable Li ion accu mulators or the Battery Pack R amp S IB 3002 with non rechargeable LiSO batteries may be connected The so called DSP extension board DSPx is located on the Radio Controller board and is used for providing additional HF house functionality as e g ALE3G or STANAG 4539 The so called Protection Processor HPP is a board which is located on the Radio Controller and is used for waveforms SECOS and Have Quick 3 1 Rx Signal Path The receive signal from the antenna is fed in via RF socket X1 ANT Via cable W1 it is trans ferred to RF connector X26 of the power amplifier During reception the transmit path of the power amplifier is blocked Therefore the receive signal is taken via the power amplifier s in ternal filter with low attenuation to
101. nd disconnect radio from test setup 2 9 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 19 Miscellaneous Functions R amp S MR300xH U Miscellaneous Functions 4 5 19 Miscellaneous Functions 1 Carry out the test steps Table 4 23 Table 4 23 Miscellaneous Functions Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Function VM_BLOWER_ON 2 1 Switch off the power supply of the radio 2 2 By using the digital multimeter voltmeter check the polarity of signal VM_BLOWER_ON 2 3 Activate VM_DETECT at X6 S11 rear connector 2 4 Switch on the power supply of the radio 2 5 By using the digital multimeter voltmeter check if the signal voltage at 3 3 VDC X6 S11 VM_DETECT rises within the first second after power up Possible cause of fault Module radio controller A1 Power Supply A5 and or connected modules defective 3 Function SO 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 30 1 MHz Modulation F3E 3 2 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fc 30 1 MHz Signal level 70 dBm Modulation F3E Frequency shift 6 25 kHz Audio
102. ng connectors and or seals Fault elimination Replace connector s and or seals sect 5 2 9 Housing Sealing Cords Change 3 5 Remove the tactical radio from the immersion basin and allow it to dry in the climate chamber at 50 C for approximately 1 min R amp S MR300xH U 4 10 General Fault Isolation Procedures 4 5 General Fault lsolation Procedures Troubleshooting on the tactical radio commences with a visual inspection sect 4 3 Visual Examinations If these measures fail to detect the fault continue troubleshooting acc to Table 4 3 Table 4 3 Fault lsolation Crossreference List Power Consumption sect 4 5 1 Power Consumption Man Machine Interface Function sect 4 5 2 Man Machine Interface Function Audio Connector X4 and or Data Connector X5 sect 4 5 3 Audio Connector X4 and or Data Connector X5 HF V UHF Antenna Switch sect 4 5 4 HF V UHF Antenna Switch GPS Connector X2 sect 4 5 5 GPS Connector X2 RF Transistor or Transmitter in Fix Frequency Mode sect 4 5 6 RF Power of Transmitter in Fix Frequency Mode Power at REAR Connector X6 sect 4 5 7 Power at Rear Connector X6 Frequency Accuracy of Transmitter in Fix Fre quency Mode sect 4 5 8 Frequency Accuracy of Transmitter in Fix Fre quency Mode Harmonic Emission of Transmitter in Fix Fre quency Mode sect 4 5 9 Harmonic Emission of Transmitter in Fix Frequen cy Mode
103. nt and disconnect radio from test setup 3 5 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 12 VSWR Reduction of Transmitter in Fix Frequency Mode es See SS SS aS Se E ee ee ee ee ee ee See ar ae Service Manual I Level 6124 8346 82 04 4 31 R amp S MR300xH U 4 5 12 VSWR Reduction of Transmitter in Fix Frequency Mode VSWR Reduction of Transmitter in Fix Frequency Mode a a Ml 1 Carry out the test steps Table 4 16 Table 4 16 VSWR Reduction of Transmitter in Fix Frequency Mode Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 At X1 ANT connect a load resistor of 50 Q 500 W 2 VSWR Reduction HF Range only R amp S MR300xH 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 10 1 MHz Output power 20 W Modulation J3E faudio on line 6 dBm audiot 1 0 kHz faudio2 1 8 kHz 22 By using the communication analyzer at X1 check output power and output Pout 20 Wpep current nominal at an output load of 50 Q yee Possible cause of fault Lot lt 3 3A Module power amplifier A2 and or connected modules defective 2 3 Disconnect load resistor from X1 2 4 By using the communication anal
104. o 2 GPS Connector X2 2 1 Connect GPS antenna at RF socket X2 GPS ANT 2 2 Check display for correct connection of GPS antenna This may take correct position time 5 minutes 1 minute and velocity Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 2 3 Switch off power supply and disconnect radio from test setup 2 4 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 6 RF Power of Transmitter in Fix Fre quency Mode aa ce I eee 4 20 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U RF Power of Transmitter in Fix Frequency Mode 4 5 6 RF Power of Transmitter in Fix Frequency Mode 1 Carry out the test steps Table 4 10 Table 4 10 RF Power of Transmitter in Fix Frequency Mode Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 PEP in SSB Mode 2 1 At X5 1 LINE_TX and X5 22 LINE_TX connect AF generator of audio analyzer and feed in two signals simultaneously with the following parame ters Tein 1 kHz Taudiod 1 8 kHz Signal level 6 dBm into 600 Q 2 2 At X1 ANT connect power meter input of communication analyzer 2 3 At the radio set the following Mode switch RX TX
105. o adjust acc to step 2 8 Modulation J3E 2 8 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator so that the audio level Laudio once again reaches the value acc to step 2 5 Make a note of the signal level Lo 4 60 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Intemodulation Distortion SSS SS SSS SS SS SS SS SS SS SS SS ee ee No Activity fault elimination Nominal value 2 9 Calculate the intermodulation distorsion IP3 as follows IP3 gt 13 dBm IP3 0 5 Linterf Lo Linter 0 5 3 Linterf Lo for all frequencies lt 5 MHz Possible cause of fault Module power amplifier A2 and or connected modules defective 2 10 At the following frequencies fnom repeat steps 2 1 to 2 9 Frequency from 10 1 MHz and 20 1 MHz IP3 gt 15 dB for all frequencies from 5 to 25 MHz Frequency from 29 9 MHz IP3 gt 15 dB for all frequencies gt 25 MHz Possible cause of fault Module power amplifier A2 and or connected modules defective 2 Intermodulation Distortion VHF Range 3 1 At the radio change the following parameter Frequency from 30 1 MHz 3 2 At antenna terminal X1 ANT connect the power combiner 3 3 By using the signal generator at input 1 of the power combiner feed in an in terfering signal with the following par
106. o analyzer at X4 B AUDIO_RX 2 2 Connect signal generator at X1 ANT 2 3 At the radio set the following parameters Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency fo 1 983 MHz Modulation J3E AGC OFF Preamplifier OFF MGC 15 dB 2 4 At the signal generator set the following parameters Frequency 1 983 MHz Signal level 110 dBm 2 5 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the measured audio level 2 6 At the signal generator change the following parameter Frequency 142 893 MHz 1 IF 2 7 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 2 5 Make a note of the signal level Lo 2 8 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 2 9 At the radio change the following parameter Frequency fo 5 MHz Service Manual I Level 6124 8346 82 04 4 65 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 2 10 At the signal generator set the following parameters Frequency 5 MHz Signal level 110 dBm 2 11 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level 2 12 At the signal generato
107. o signal the following e TX e FAULT e PLAIN Grips at the left and right are provided for transport At the rear of the housing there is the optional battery pack a Sena SS SS ES Se ee a a eS a a ae a sre Service Manual I Level 6124 8346 82 04 2 3 Modules A1 to A6 and module A10 with R amp S MR 300xH only are accommodated in the Housing AY e Figure 2 1 e Figure 2 2 e Figure 2 3 e Figure 2 4 e Figure 2 5 The Housing A9 is designed as shown in e Figure 2 6 e Figure 2 7 e Figure 2 8 e Figure 2 9 e Figure 2 10 e Figure 2 11 Figure 2 2 MR 300xH U without Cover Top me ee ee l Z e ICN 4G A 231000 R D0894 00003 A 01 1 Metal Cover EMC protection 1 2 RF Unit A3 3 Housing AY R amp S MR300xH U The radio consists of the following assemblies Figure 2 3 R amp S MR 300xH without Cover and RF Unit Top ICN 4G A 231000 R D0894 20001 A 01 1 1 ATU A10 R amp S MR 300xH only 2 Intermediate plate 3 Power Amplifier HF VHF A2 E ee ee ee ae eee 2 6 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U 1 The radio consists of the following assemblies Figure 2 4 MR 300xH without ATU Cover RF Unit and Intermediate Plate Top ICN 4G A 231000 R D0894 00004 A 01 1 Power Amplifier HF VHF A2 cS a Oe Service Manual I Level 6124 8346 82 04 2 1 R amp S MR300xH U The radio consists of the following assemblies 2 8 KR WD
108. o the two screws fixing the cable eye at the power amplifier board i Undo the two hexagon socket head screws at the flexible wiring j Lift the power amplifier carefully out R amp S MR300xH U HF VHF Power Amplifier Change Figure 5 15 Power Amplifier Removal only Housing A9 Mod 02 ICN 4G A 231000 R D0894 20010 A 01 1 a Sea SS Se SS Sa a a a a es a a ae eS ee Service Manual I Level 6124 8346 82 04 5 21 1 RF cables 2 Screws 3 Hexagon socket head screws 2 Installing the HF VHF Power Amplifier in R amp S MR300xH To install a new or repaired power amplifier proceed in the reverse order of removal R amp S MR300xH U VHF UHF Power Amplifier Change a a a a eR a a a ea a ee 5 2 5 VHF UHF Power Amplifier Change Removing the VHF UHF Power Amplifier from R amp S MR300xU 1 Put R amp S MR300xU on a work table in operating position so that the upper cover is a accessible from the top Figure 5 16 b Remove the upper cover Turn the cover upside down before putting it on the work table The RF gasket on the cover must not get in contact with paper as the sulphur in the paper will damage the gasket Figure 5 16 R amp S MR300xU Removing the Upper Cover UPPER COVER E a alla 5 a L JEL en e j 3 Bie a A E ost fr ji 2 ABC p i 7 6 ees cy ICN 4G A 23 1000 R D0894
109. omputer with serial interface COM 1 2 e Operating System Windows 2000 e Driver SW WIN PCAP_3 0 exe e Power supply 24 VDC for unit e SOFTWARE UPDATE 32 loading via the docking station ethernet interface at the unit frontside e Cable 6125 9200 02 e PC host computer with serial interface COM 1 2 e Operating System Windows 2000 e Driver SW WIN PCAP_3 0 exe e Power supply 24 VDC for unit e SOFTWARE UPDATE 32 loading via the serial interface DATA at the unit frontside e Cable R amp S GK3003 6099 8507 02 e PC host computer with serial interface COM 1 2 e Operating System Windows 2000 e Driver SW WIN PCAP_3 0 exe e Power supply 24 VDC for unit e SOFTWARE UPDATE 32 CNR Operating System Loading Equipment The same as for FW loading Firmware Loading Equipment Service Kit 5200 6977 00 on p 6 2 Firmware Loading Equipment Service Kit 5200 6977 00 SECOM H SECOM V Loading Equipment Radio Configuration e PC host computer with USB interface e Fill gun R amp S R amp S R amp S GP3000 6099 3805 02 e USB driver for fill gun GP 3000 3100 e USB adapter cable Fill gun PC load cable 6118 1750 02 and readout cable 6118 1750 03 e Power supply 24 VDC a a a ce ee ee ae eee 6 2 Service Manual I Level 6124 8346 82 04 6 1 2 2 6 1 3 1 Optional Firmware Loading Equipment e Ethernet Hub e PC cable Ethernet Hub PC e Fillgun R amp S R amp S GP3000 6099 3805 02 e USB ada
110. ontroller A1 RF unit A3 and or connected modules defec tive 4 3 Only R amp S MR300xU gt 10 dB SINAD At both radio and signal generator set the following receive frequencies in succession see below At signal generator set RF level 109 dBm By using the audio analyzer at X4 B check AF signal S N N with audio psophometric weighting filter acc to CCITT RX frequencies 185 1 MHz 310 1 MHz 502 125 MHz Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 5 FSK Mode 5 1 Connect the input of the vector signal generator at X5 11 232 RXD2 a Sea SSS Se SS a ee a a ee a a Se eee sear Service Manual I Level 6124 8346 82 04 4 37 R amp S MR300xH U Sensitivity of Receiver in Fix Frequency Mode eeel No Activity fault elimination Nominal value 5 2 Set the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 40 050 MHz Modulation mode F1D Preamplifier ON R amp S MR300xH OFF R amp S MR300xU 5 3 By using the signal generator at antenna terminal X1 ANT feed in a digital signal with the following parameters Frequency 40 050 MHz Modulation FM signal with binary data at 16 kbit s Bit error rate BER lt 1 if adjustable Receive level 110 dBm 5 4 By using the vector signal generator at X5 11 check the bit error rate l
111. pter cables Fill gun PC load cable 6118 1750 02 and readout cable 6118 1750 03 Loading and Update Procedures Hardware Configuration Setup For software download to the R amp S M3TR there is no difference of the hardware configuration setup between loading Firmware CNR Operating System or Security Code V850 Set up the required hardware configurationFigure 6 1Figure 6 2Figure 6 3 R amp S MR300xH U Load Software Procedures Figure 6 1 Loading without Docking Station ICN 4G A 231000 R D0894 20011 A 01 1 Figure 6 2 Loading Configuration via the Docking Station Ethernet Interface at the Unit Frontside Docking Station 6125 9200 02 24 VDC Option Ethernet Hub ICN 4G A 231000 R D0894 20012 A 01 1 aa ee ee ee Se ee eee 6 4 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Load Software Procedures Figure 6 3 Loading Configuration via the Serial Interface DATA at the Unit Frontside not recommended 6099 8507 02 GK3003 24 VDC ICN 4G A 231000 R D0894 20013 A 01 1 6 1 3 2 Software Download Firmware Download via the Rear Interface and via Ethernet Interface of the Docking Station at the Front For both procedures the loading process is absolutely the same Performing 1 Switch off the tactical radio 2 Switch on the PC host computer 3 Start Update32 4 Open Config Menu 5 Select Network Adapter with shortcut F6 and confirm with the button OK The following dialog box Select a
112. r change the following parameter Frequency 145 910 MHz 1 IF 2 13 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Laudio once again reaches the value acc to step 2 11 Make a note of the signal level Lo 2 14 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 2 15 At the radio change the following parameter Frequency fo 12 MHz 2 16 At the signal generator set the following parameters Frequency 12 MHz Signal level 110 dBm 2 17 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level 2 18 At the signal generator change the following parameter Frequency 152 910 MHz 1 IF 2 19 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lo at the signal generator until the audio level Laudio once again reaches the value acc to step 2 17 Make a note of the signal level Lo 2 20 Calculate the image rejection as follows gt 100 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 2 21 At the radio change the following parameter Frequency fo 29 5 MHz
113. rom the transmit frequency Possible cause of fault Module RF unit A3 power amplifier A2 and or connected modules defec tive 3 3 By using the communication analyzer at X1 check the sideband noise ata lt 140 dBc Hz spacing of 2 MHz from the transmit frequency Possible cause of fault Module RF unit A3 power amplifier A2 and or connected modules defec tive 3 4 Switch off test equipment and disconnect radio from test setup 3 5 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 11 Two tone Intermodulation of Transmit ter in Fix Frequency Mode a eee SS SS ES SL ee ee ee ee ee ee ee ee Se a eer Service Manual I Level 6124 8346 82 04 4 29 R amp S MR300xH U Two tone Intermodulation of Transmitter in Fix Frequency Mode 4 5 11 Two tone Intermodulation of Transmitter in Fix Frequency Mode 1 Carry out the test steps Table 4 15 Table 4 15 Two tone Intermodulation of Transmitter in Fix Frequency Mode Fault Detection 1 No Activity fault elimination Preparations Nominal value 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Two tone Intermodulation Distortion at Power Supply 24 VDC 2 1 Set power supply to 24 VDC 2 2 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION
114. roubleshoot ing fault elimination and or replacement of modules The immersion test as described below complies with the following standard MIL STD810E method 512 3 procedure Basic Leakage 1 m depth 2 hours Carry out the test steps listed in the table Table 4 2 Table 4 2 Leak Test No Activity fault elimination Nominal value 1 Preparation 1 1 Put the tactical radio into the test chamber and close the test chamber tight 1 2 Set the test pressure of the test chamber to 200 mbar 1 3 Set the test duration to 100 sec 2 Leakage Rate Test 2 1 Using the pressure difference meter check the required leakage rate Lata 0 6 to 0 Nccm min chamber volume of 930 20 ml Leakage rate L Possible cause of fault tactical radio is leaking Fault elimination Replace defective R amp S M3TR 3 Immersion Test 3 1 Put the tactical radio in a climate chamber and allow to cool down to 5 C for approximately one hour 3 2 Fill the immersion basin with water Heat the water to 25 2 C aa ce ee ee Se ae eee 4 8 Service Manual I Level 6124 8346 82 04 No Activity fault elimination Nominal value 3 3 Immerse the cooled tactical radio completely in the basin for gt 5 min 3 4 Observe the tactical radio in the immersion basin and check for air bubbles ris no air bubbles ing from the housing Possible cause of fault Leaki
115. rsesteteicrectstenaressiazsanacnanianeutansacieiecnaedsetieanecsinenteessanees 5 38 6 System Equipment Configuration ccccccesseeseeseeeseeseeneeeeeeeeeseeeees 6 1 6 1 Load Software Procedures i cccsicscerecccvenceiusewenenvannsxwansienienents uanewelevamaanieledunuxsibiclecucesievdesiwneics 6 1 RT 1 9 2 e ee ee ere een A EEEE A E EAE ee 6 1 6 1 2 Reguisilons ssamen cnn ee eee ae eee 6 1 6 1 2 1 Equipment specific SVVIFW IAW srccseiecvecdsco 2sdtnestnatsesbennihchceswteeeneusadiveaicesarnadeeeshesheosiesvabes 6 2 6 1 2 2 Optional Firmware Loading Equipment ccccccccccsececeeeeseeeeceeeeeseeeeeeeeeseeeeseeeeseeeees 6 3 6 1 3 Loading and Update Procedures cccccccseeeceeeeecaeeeeeeeeeeueeeeeeeeeseeeseueesaueeseneeseeeeeseeeeaes 6 3 6 1 3 1 Hardware Configuration Setup cccccccccseccsseeceeeceecceeecaeecueeaseesaeecueecueeseeesageeseeeses 6 3 6o22 SoftWare DOWIIOAG serrera inenika aR ARa AEDA dan EDRR E ARAE ARN AEAEE ARAA EE Rn 6 5 62 Gal AION orree 6 11 6 2 1 Changing the Frequency ccccccccccsecceeeeceeeeee cess eeseeeeeeeeseeeseeesseeseeeseeeeeesaeeeseeesaeeeaes 6 15 Gea COJ 81 2 16 a e ecm erate ee ea eee eee A 6 17 TANG AUS n E 7 1 ANN GS estes eera as neceawaainnserauenaeetonnshtmenseusensseeataeunensceccetdseodtetwecsierendseseaade 8 1 E a ee ee ae eee 2 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Figure 2 1 Figure 2 2 Figure 2 3 Figure 2
116. se passwords can be changed via the R amp S RNMS 3000 Radio Network Manage ment System e The issuance of user rights i e user levels is managed by the system administrator e The assignment of user levels to radio functions is fix and cannot be changed So for in stance starting the downloading procedure always requires user level 2 to be selected Step Control Action Note 1 Press The display changes e g OFF t LOG1 USERLEVEL 0 OP 2 Press The display changes e g ENTER FA SHO0RD LL Ld ENT 3 9 Press Enter password to 4 ews Press a Sea SS Se SS Se a a a a es a a ae eS ae Service Manual I Level 6124 8346 82 04 6 17 R amp S MR300xH U Spare Parts 7 Spare Parts The following spare parts are only valid for mod 04 The spare parts for other mod are available on request Table 7 1 Spare Parts for R amp S MR 3000H Item No Designation Component no Quantity Ident no 10 Protection Gap 2 6094 9363 00 20 Cable W7 1 0048 7070 00 30 Flex Strip W6 1 6094 8309 00 40 Cable W1 1 6094 8721 00 50 Connector X421 1 6094 7483 00 100 RF Unit A3 1 6098 9651 03 110 Shielding Corner 1 6094 7648 00 125 Front Panel A4 1 6094 8009 04 130 Retaining Washer 1 0031 5104 00 140 Sealing FP 1 6094 9340 00 150 Cable W3 1 6094 7619 00 160 Rubber Keypad 1 6094 8044 00 170 Seal Screw 1 6099 0635 00 180 FP Control
117. sible cause of fault Module power amplifier A2 ATU HF A10 and or connected modules de fective 2 2 At radio set an output power of 10 W and the following transmit frequencies in succession By using the communication analyzer at X1 check the har monic emission referred to the selected transmit frequency Frequencies R amp S MR 300xH 30 1 MHz lt 50 dBc 60 125 MHz 90 1 MHz and 107 99 MHz lt 55 dBc Frequencies R amp S MR 300xU 25 1 MHz 42 1 MHz 70 9 MHz 108 1 MHz 185 1 MHz 310 1 MHz and lt 65 dBc 502 125 MHz Possible cause of fault Module power amplifier A2 ATU HF A10 only R amp S MR 300xH and or connected modules defective 2 3 Switch off test equipment and disconnect radio from test setup 2 4 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 10 Transmitter Noise in Fix Frequency Mode Service Manual I Level 6124 8346 82 04 4 27 R amp S MR300xH U Transmitter Noise in Fix Frequency Mode T S a a 4 5 10 Transmitter Noise in Fix Frequency Mode 1 Carry out the test steps Table 4 14 Table 4 14 Transmitter Noise in Fix Frequency Mode Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATI
118. signals from the external connector X5 DATA Analog microphone signals are taken to the FP Control subassembly of the front panel They are converted into serial signals and fed via X8 X7 cable W4 and X11 to the radio controller Analog signals fed in at connector X4 AUDIO are taken via X14 to the radio controller An alog LINE_TX and digital V 24 V 10 signals fed in at connector X5 are taken via X18 also to the radio controller In the radio controller the signals are converted and routed as modulation signals via X12 and X13 to the power amplifier The synthesizer of the RF unit generates a signal with the desired transmit frequency and routes it via X41 and X21 also to the power amplifier The modulated carrier frequency at X26 of the power amplifier is taken via cable W1 and RF socket X1 ANT to the antenna For optimum antenna matching to the power amplifier the antenna tuning unit is used R amp S MR 3000H only It is connected to the power amplifier via X212 and X22 cS a oe Service Manual I Level 6124 8346 82 04 3 3 R amp S MR300xH U Settings and Cabling 3 3 Settings and Cabling 3 3 1 General All required settings of operating modes and functions are tailor made at the factory in com pliance with the customer s specifications 3 3 2 MR 300xH U Cabling Figure 3 1 MR 300xH U Cabling O ICN 4G A 231000 R D0894 00007 A 01 1 GPS Antenna HF VHF UHF Antenna DATA Terminal Headset Ground
119. sing the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value 3 34 At the signal generator change the following parameter Frequency 145 910 MHz 2nd IF 3 35 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level Lp at the signal generator until the audio level Lagi once again reaches the value acc to step 3 33 Make a note of the signal level Lo 3 36 Calculate the image rejection as follows gt 70 dB Image rejection 110 dB L Possible cause of fault Module RF unit A3 and or connected modules defective 4 Image Rejection UHF1 Range 4 1 At the radio change the following parameter Frequency fo 111 MHz 4 2 At the signal generator set the following parameters Frequency 111 MHz Signal level 110 dBm 4 3 By using the audio analyzer at X4 B check the audio level Laudio Make a note of the audio level value e a ce ee ee a Service Manual I Level 6124 8346 82 04 4 69 R amp S MR300xH U Image Rejection No Activity fault elimination Nominal value 4 4 At the signal generator change the following parameter Frequency 456 910 MHz 1 IF 4 5 By using the audio analyzer at X4 B AUDIO_RX measure the audio level Laudio At the same time adjust the signal level L at the signal generator until the audio level Laudio once again reaches the
120. ssor DSPx DSP extender board EMC electromagnetic compatibility EMF EPM electronic protection measures F3E frequency modulation voice communication FE frontend FW firmware GPS global positioning system HF high frequency HPP protection processor HW hardware Q inphase quadrature modulation IBIT initiated built in test Service Manual I Level 6124 8346 82 04 A 1 R amp S MR300xH U A 2 Abbreviations IF intermediate frequency IM intermodulation IN input J3E amplitude modulation one sideband no carrier LC liquid crystal LED light emitting diode Li ion lithium ion battery type LISO lithium sulphur dioxide battery type M3TR multiband multimode multirole tactical radio MGC manual gain control MMI man machine interface OUT output PA power amplifier PBIT power on built in test PDM product data management PC personal computer PEP peak envelope power POP product online profile PS power supply PTT push to talk R amp S registered trademark of Rohde amp Schwarz GmbH amp Co KG RC radio controller RCB radio control bus RF radio frequency RFU radio frequency unit RMS root mean square RS 232 serial interface standard RS 422 interface standard RS 485 serial interface standard RSSI receive signal strength indicator Service Manual l Level 6124 8346 8
121. sueeeceessusesueesseeenaes 2 13 Housing AQ Mod 03 Rear ccccccccsccceseeceeeceeceecseeecaecceeeceessueesaeessueecaessueeeceeseusesaeesaeeenaes 2 14 MR 300xXM U SCA ING oc screech rsd nt ise ciea ces cins wees cece wing aN a a cision E E slogan EETA EEAS 3 4 R amp S MR 300xH U Test Setup 1 wicccccsselecedeaes cased naledanedieictd anactaasdencageeiveidactawenacelosiseecetenameencens 4 3 R amp S MR 300xH U Test Setup 2 0 0 cccccecceeeeeceeeceeeeceeeeseaceesaeessageeseeeeseeeeseasessueessueeeseees 4 4 Protective Caps for Connectors Of R amp S M3TR cece ceeeec sees eeeceeeeseeeseeeseeeeseeseeeseeeeseeeseeees 4 7 COG Feat OS MON orice eects ei E Rar e EEEE EASE e EEE SEES EEEE tues ted REE N 5 2 Removing the Upper Cover cccccccscccescecececseeeeeceaeeceesaeeececsaeeseeecsaeesaeecueeesaeseaeesaeessgeesaeegas 5 3 Removing the Lower COVED cccccscccescecseccceseeecuecensueeseecensaeeseuecseecesssecsaeeessaeensseesueeesseeenaess 5 4 Removing the Lower COVED cccccccceeecescececcceeeeceeceaeeceesueeecaeeeaeesseeseaeesaeeseeesaeeeaeesaeessueeneeenas 5 6 Radio Controller Undoing Cables cece cece ceececeeeceeeceeeeceeeceeeseeeseeeseeeseeeeseeeseeeseeeeseeeseeees 5 7 Radio Controller Undoing SCrEWS ccccceccc cece eeeeee eee eese cess eeseeeseeeeseeesaeesaeeeseeeseeseeeeseeeseeeges 5 8 Radio Controller Removal Only mod 02 03 cccceccceseeeeceeeeeeseeeeeseeeeeeeeeeeesueeeeseeeeeae
122. t 1 The measurement should take at least one minute to ensure stable and reproducible results Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 5 5 At the radio change the following setting Frequency 426 1 MHz 5 6 At the signal generator change the following settings Frequency 426 1 MHz Receive level 107 dBm R amp S MR300xH 109 dBm R amp S MR300xU only R amp S MR300xU Modulation FM signal with binary data at 16 kbit s Bit error rate BER lt 1 if adjustable a ee ee Se ae eee 4 38 Service Manual I Level 6124 8346 82 04 No Activity fault elimination Nominal value 5 7 By using the vector signal generator at X5 11 check the bit error rate lt 1 NOTICE The measurement should take at least one minute to ensure stable and reproducible results Possible cause of fault Module radio controller A1 RF unit A3 and or connected modules defec tive 5 8 Switch off test equipment and disconnect radio from test setup 5 9 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 14 Desensitization of Receiver in Fix Fre quency Mode R amp S MR300xH U Desensitization of Receiver in Fix Frequency Mode a a ee ee Ml 4 5 14 Desensitization of Receiver in Fix Frequency Mode 1 Carry out the test st
123. t X6 C2 check output power atthe Pout 20 W 1 dB load resistor R amp S MR300xH Possible cause of fault Pout 10 W 1 dB l R amp S MR300xU Module power amplifier A2 RF unit A3 and or connected modules defec tive 2 3 Switch off test equipment and disconnect radio from test setup 2 4 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 8 Frequency Accuracy of Transmitter in Fix Frequency Mode a ae ae Se eS aS SL S a a a ee a a Se ET Service Manual I Level 6124 8346 82 04 4 25 R amp S MR300xH U Frequency Accuracy of Transmitter in Fix Frequency Mode a Ml 4 5 8 Frequency Accuracy of Transmitter in Fix Frequency Mode 1 Carry out the test steps Table 4 12 Table 4 12 Frequency Accuracy of Transmitter in Fix Frequency Mode Fault Detection 1 No Activity fault elimination Preparations Nominal value 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 1 3 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 107 99 MHz R amp S MR300xH 502 125 MHz R amp S MR300xU Modulation F3E without modulation signal Frequency Accuracy 2 1 By using the communication analyzer at X1 check the transmit frequency Possible cause of fault Module power amplifier A2 RF unit A
124. tch 1 Carry out the test steps Table 4 8 Table 4 8 HF V UHF Antenna Fault Isolation No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 HF V UHF Antenna Switch 2 1 Connect connector contact X6 S15 HF V UHF contact of rear connector at AF input of audio analyzer 2 2 At the radio set HF mode frequency lt 30 MHz 2 3 By using the audio analyzer at X6 S15 check voltage 3 3 V Possible cause of fault Module radio controller A1 and or connected modules defective 2 4 At the radio set V UHF mode frequency gt 30 MHz 2 5 By using the audio analyzer at X6 S15 check voltage OV Possible cause of fault Module radio controller A1 and or connected modules defective 2 6 Switch off test equipment and disconnect radio from test setup 2 1 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 5 GPS Connector X2 a eae SS Se SS Se ee ee a ee ee a a Se eae a aeeee Service Manual I Level 6124 8346 82 04 4 19 R amp S MR300xH U GPS Connector X2 4 5 5 GPS Connector X2 1 Carry out the test steps Table 4 9 Table 4 9 GPS Connector X2 Fault Isolation No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on power supply and radi
125. tch RX TX Preset switch MAN Submenu OPERATION RX Frequency 10 1 MHz Modulation J3E Preamp OFF AGC ON BW 2 4 kHz 2 2 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fe 10 1 MHz Signal level 60 dBm Modulation J3E Audio frequency 1 0 kHz 2 3 By using the audio analyzer at X5 2 LINE RX X5 15 LINE _RX check lt 5 the THD Possible cause of fault Module RF unit A3 and or connected modules defective 2 4 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 60 125 MHz Modulation F3E Preamp OFF AGC ON BW 25 kHz Service Manual I Level 6124 8346 82 04 4 47 R amp S MR300xH U 4 48 Total Harmonic Distortion No Activity fault elimination Nominal value 2 9 At X1 ANT feed in an RF signal with the following parameters Carrier frequency fe 60 125 MHz Signal level 60 dBm Modulation F3E Frequency shift 6 25 kHz Audio frequency 1 0 kHz 2 6 By using the audio analyzer at X4 B AUDIO_RX check the THD lt 5 Possible cause of fault Module RF unit A3 and or connected modules defective 2 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION RX Frequency 185 1 MHz Modulation A3E Preamp OFF AGC ON BW 6 kHz 2 8 At X1 ANT feed in an RF signal with the following parameters C
126. tem Equipment Configuration 6 System Equipment Configuration 6 1 Load Software Procedures 6 1 1 General With Remote controlled Transceiver of R amp S M3TR all system equipment configuration is factory set by way of software and compliance with the customer s specifications Such set tings can be altered by SW Service Procedures a complete SW Update can also be per formed This chapter describes typical software loading into the R amp S M3TR Software Update For all operations a standard PC is used Typical Microsoft Windows operations are not ex plained specifically 6 1 2 Requisitions The necessary download software can be obtained on two ways 1 For each delivered unit a certificate with information about HW and SW configuration is enclosed Additionally a CDROM is included with a software update 2 With the aid of data base POP at Rohde amp Schwarz Messgerate GmbH in Memmingen the belonging partnumber of the update software can be achieved on the basis of the unit s partnumber Sachnr and of the unit s serialnumber Then the update software can be down loaded from PDM a Se ae SSS SS SS ee a a a ea a Se eae eae Service Manual I Level 6124 8346 82 04 6 1 R amp S MR300xH U Load Software Procedures SSS SS SSS SS SS SS SS SS SS ee See 6 1 2 1 Equipment specific SW FW HW Firmware Loading Equipment Service Kit 5200 6977 00 loading via the rear interface e Cable for Ethernet PM 503964 xxx e PC host c
127. ttery Holder 1 6095 2210 00 590 Cabletie 1 0099 2181 00 710 HCM 3702 01 MANPACK 1 6086 3818 02 720 DSP Extension Board 1 6126 4919 02 730 Warranty Seal 1 6110 5304 00 998 Aerospace Marker 1 3584 7334 00 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Drawings 8 Drawings Basic Assembly e 6137 9230 01 S Interface Description for TACTICAL RADIO R amp S MR 300xH e 6118 3000 01 SB Circuit Diagram for TACTICAL RADIO R amp S MR 3000H e 6118 3000 01 S Parts List for TACTICAL RADIO R amp S MR 3000H e 6118 3000 01 SA Interface Description for TACTICAL RADIO R amp S MR 300xU e 6118 3500 01 SB Circuit Diagram for TACTICAL RADIO R amp S MR 3000U e 6118 3500 01 S Parts List for TACTICAL RADIO R amp S MR 3000U e 6118 3500 01 SA a See Se SS RS Se S ee ee ee a a Se E Service Manual I Level 6124 8346 82 04 8 1
128. ual l Level 6124 8346 82 04 R amp S MR300xH U HF VHF Power Amplifier Change e Remove the Antenna Tuning Unit according to sect 5 2 3 Antenna Tuning Unit Change The hybrid circuit has been coated with toxic heat conducting paste and therefore must not be touched without protection Should the necessity arise to touch the hy brid circuit e g in repairs be absolutely sure to wear rubber gloves After use dispose of the gloves in accordance with the relevant waste disposal regulations If in spite of all care you have got contaminated in any way wash the toxic material off immediately with soap and plenty of water BERYLLIUM some electronic power elements may have insulation made from beryllium oxide ceramics Such components are especially marked on the circuit documentation Please see the safety instructions for handling parts made from beryllium oxide ceramics Figure 5 14 Power Amplifier Undoing Screws ICN 4G A 231000 R D0894 20009 A 01 1 1 hexagon spacer bolts 2 hybrid circuit f At the power amplifier of R amp S MR300xH undo the five hexagon spacer bolts by using a socket wrench a a a aaa E Service Manual l Level 6124 8346 82 04 5 19 g Avoid any tensile or compressive stress on hybrid circuit and cables Pull off the RF cables by using an extracting hook The lines with connectors X28 and X29 are only available with Mod 02 of Housing A9 h Und
129. ules defective 2 14 By using the signal generator at X1 ANT of radio feed in an RF signal with the following parameters Frequency 226 MHz 236 MHz 333 MHz 436 MHz and 510 MHz Signal level 110 dBm 2 15 By using the audio analyzer measure audio level Laudio and note 2 16 Change signal generator frequency to 140 455 MHz 1 IF Increase IF level Lguntil audio level Laudio measured in step 2 14 is reached again Note IF level Lo 2 17 Calculate IF rejection as follows gt 80 dB IF ejection 110 dB Lo Possible cause of fault Module RF unit A3 and or connected modules defective 2 18 Switch off test equipment and disconnect radio from test setup 2 19 If no errors have been detected during the tests described in this chapter continue troubleshooting sect 4 5 17 Total Harmonic Distortion E De ee ee ee eee 4 46 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U Total Harmonic Distortion 4 5 17 Total Harmonic Distortion 1 Carry out the test steps Table 4 21 Table 4 21 Total Harmonic Distortion Fault Detection No Activity fault elimination Nominal value 1 Preparations 1 1 Arrange test setup sect 4 2 Test Setup 1 2 Switch on test equipment and radio 2 Total Harmonic Distorsion THD of Audio Signal 2 1 At the radio set the following Mode swi
130. will be performed via the fill gun R amp S GP3000 6098 3805 02 Therefore 2 steps are necessary 1 Use the USB adapter cable for filler connector 6118 3805 02 and connect the fill gun with the PC to transfer the SECOM data from the PC to the fill gun 1 Fig A 4 2 Then connect the fill gun directly with the R amp S M3TR to transfer the SECOM data to the R amp S M3TR Figure 6 7 For readout data from the fill gun into the PC use the USB adapter cable 6118 3805 03 T a eee Service Manual l Level 6124 8346 82 04 6 9 Figure 6 7 Loading Configuration for SECOM H SECOM V USB adapter cable 6118 1750 02 6118 1750 03 Fill gun GP 3000 6099 3805 02 2 Fill gun GP 3000 ICN 4G A 231000 R D0894 20016 A 01 1 R amp S MR300xH U Calibration 6 2 Calibration To maintain the specification of the tactical radio the oscillator part of the module Radio Fre quency Unit RFU needs to be calibrated The time interval for calibration of the reference oscillator is once every five years together with battery exchange to be performed by qual ified personnel only The procedure should be performed at room temperature to ensure correct calibration For calibration any possible RX frequency of the radio may be used Rohde amp Schwarz rec ommends to perform the calibration with a frequency from 10 MHz to 100 MHz The output power of the frequency standard must in the range of 10 dBm to 0 dBm To ca
131. x4 6096 1101 03 Power Amplifier VHF UHF xe x X x 6140 7340 02 ATU3 x ATU4 x3 46 x46 x46 x46 RF Unit X X X X X X X X Radio Controller x2 3 x2 3 6098 9200 02 Radio Controller x4 x x x x x x x 6126 4877 02 Radio Controller x x56 x x x6 x x x 6140 7240 02 Line Interface x2 3 x2 3 Power Supply x x Power Supply Il x346 x34 56 x46 x46 x46 x46 x46 x46 Protection Processor X X X xX DSP Extension Board X xX x X 2 model 02 3 model 03 4 model 04 5 model 05 6 model 06 Therefore here reference is mostly to the tactical radio in general differences being point ed out where necessary a a a Se ee a eee 1 2 Service Manual l Level 6124 8346 82 04 R amp S MR300xH U Construction 2 Construction See Figure 2 1 to Figure 2 11 The radio consists of the following assemblies Radio Controller A1 Power Amplifier HF VHF A2 only for R amp S MR 300xH Power Amplifier VHF UHF A2 only for R amp S MR 300xU RF Unit A3 Front Panel A4 Power Supply A5 Line Interface A6 only mod 02 and 03 ATU A10 only for R amp S MR 300xH Protection Processor only for R amp S MR 3001H U and R amp S MR 3002H U DSP Extension Board only for R amp S MR 3002H U and R amp S MR 3003H U These modules are accommodated in the Housing A9 mod 02 with cables X28 and X29 or mod 03 without cables X28 and X29 At the rear of the housing the optional battery pack is installed and electrica
132. yzer at X1 check output current reduced lrg lt 2 5 A current Possible cause of fault Module power amplifier A2 and or connected modules defective 3 VSWR Reduction HF Range only R amp S MR300xU 3 1 At the radio set the following Mode switch RX TX Preset switch MAN Submenu OPERATION TX Frequency 50 MHz Output power 10 W Modulation F3E 4 32 Service Manual I Level 6124 8346 82 04 R amp S MR300xH U VSWR Reduction of Transmitter in Fix Frequency Mode a a a Re a a eee No Activity fault elimination Nominal value 3 2 By using the communication analyzer at X1 check output power and output Pout 10 Wp_ep 1 dB current nominal at an output load of 50 Q l out lt 2 5 A Possible cause of fault Module power amplifier A2 and or connected modules defective 3 3 Disconnect load resistor from X1 3 4 By using the communication analyzer at X1 check output current reduced lreg lt 1 35 A current Possible cause of fault Module power amplifier A2 and or connected modules defective 4 VSWR Reduction VHF Range 4 1 At X1 ANT connect a load resistor of 50 Q 500 W 4 2 At the radio set the following Frequency 60 125 MHz R amp S MR300xH 310 MHz R amp S MR300xU Output power 10 W Modulation F3E 4 3 By using the communication analyzer at X1 check output power and output Pout 10 W 1 dB current nominal at an output load of 50 Q l out lt 2 5

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