COMMUNICATIONS SERVICE MONITORS
2945A, 2945B, 2946A,
2948, 2948B
for EDACS Repeaters
Operating Manual Supplement
Document part no. 46892/300
Issue 4
19 April 2007
Страница 1: ...COMMUNICATIONS SERVICE MONITORS 2945A 2945B 2946A 2948 2948B for EDACS Repeaters Operating Manual Supplement Document part no 46892 300 Issue 4 19 April 2007...
Страница 2: ...transmitted in any form or by any means electronic or mechanical including photocopying or recorded by any information storage or retrieval system without permission in writing by Aeroflex Internatio...
Страница 3: ...s manual Hard key titles are shown verbatim using normal lettering in square brackets Tx TEST Soft key titles are shown verbatim using italic lettering in italic square brackets Tx freq Titles shown o...
Страница 4: ...SYSTEMS mode selection 2 2 Selecting the EDACS Repeater system 2 4 Customizing the EDACS Repeater system 2 4 Test details 2 12 Selecting the AUTORUN test program 2 20 Making tests on repeaters 2 20 Da...
Страница 5: ...ate on the EDACS system The Service Monitor and the repeater are connected using either suitable RF cables for connecting to the antenna sockets of the repeater or to an aerial for testing off air AF...
Страница 6: ...e Monitor via the GPIB or RS232 interface Pause facility A feature of the AUTO mode is the pause facility This allows you to select the conditions under which the test program pauses The options are A...
Страница 7: ...em parameter settings System type As selected Default Repeater 1 Control channel 1 to 24 system dependent Default 1 Tx Polarity AUTO NORMAL or INVERTED Default AUTO Radio parameter settings Testset lo...
Страница 8: ...generator level 30 dBm RFGENLEVEL expr units Timeout 30s TIMEOUT expr units Use accessory port ON USEACCPORT ON OFF Set accessory port logic 2 ACCPORT LOGIC0 1 2 3 Call from Testset TEST TESTSETCALL...
Страница 9: ...0 3 3 4 kHz BP TXFILTER NONE LP15KHZ LP300HZ STDBP CCITT CMESS Lower limit 30 dB LOWER expr units Transmitter RF power TEST TXLEVEL Status ON STATUS ON OFF Averages 5 AVERAGES expr Upper limit 50W UPP...
Страница 10: ...RLOAD expr units Upper limit 2 5 kHz UPPER expr units Tx compression TEST TXCOMPRESS not normally used in EDACS Status OFF STATUS ON OFF Averages 5 AVERAGES expr Modulation level 1 5 kHz MODLEVEL expr...
Страница 11: ...us ON STATUS ON OFF Averages 5 AVERAGES expr Modulation level 1 5 kHz MODLEVEL expr units Rx filter CMESS RXFILTER NONE LP15KHZ LP300HZ STDBP CCITT CMESS RF upper limit 113 dBm UPPER expr units Refere...
Страница 12: ...TEST TESTSETCALL if enabled TEST LSDEVN if enabled TEST RFSINAD if enabled TEST RFDISTN if enabled TEST RFSN if enabled TEST TXFREQ if enabled TEST TXLEVEL if enabled TEST TXSINAD if enabled TEST TXDI...
Страница 13: ...ons 2 20 Automatic testing 2 22 Manual testing 2 23 Data displays 2 25 Introduction 2 25 Forward reverse data 2 25 List of figures Fig 2 1 System selection menus 2 3 Fig 2 2 Avionics Cellular or Trunk...
Страница 14: ...ut The PROGRAM AUTO MANUAL and DATA keys give access to the screens and menus required for this The set up menus of the SYSTEMS mode give you control of the parameters of the test system Once set to y...
Страница 15: ...EDACS REPEATERS 2 3 Fig 2 1 System selection menus Fig 2 2 Avionics Cellular or Trunked system selection screen...
Страница 16: ...SET UP and PROGRAM keys as explained in this section SYSTEM The SYSTEM key brings up the SYSTEM SELECTION MENU allowing access to all of the test systems that are installed in the Service Monitor and...
Страница 17: ...SYSTEM listing and also at the left of the screen heading The soft keys revert to system parameter keys If the polarity setting is being changed the new selection is shown against the Tx POLARITY lis...
Страница 18: ...evel SYSTEM PARAMETERS menu keys without selecting a different system type press the key for the current system type You can set up parameters for the currently selected variant The edit current key a...
Страница 19: ...he EDACS Repeater 1 variant EDIT CURRENT menu Note This causes information from the Radio variant to overwrite all the current SYSTEM information It cannot be retrieved CONTROL CHANNEL Before any test...
Страница 20: ...ervice Monitor during signaling procedures The radio logical identity parameter allows you to change the number Note that if the Service Monitor sees a radio make a call to the group identity specifie...
Страница 21: ...re The AUTORUN program pauses at the end of any test that fails always The AUTORUN program pauses at the end of every test Once the program has paused there are two available options The program can b...
Страница 22: ...ted in Chapter 1 General Information Fig 2 9 Autorun parameters menu SYSTEM TYPE There are a number of different system types or Variants that can be selected from within the SYSTEMS PARAMETERS menu T...
Страница 23: ...ncluding the decimal point and minus sign enters their character as the next in the title To delete the latest character placed in the title either Press the delete char key Press the DELETE key on th...
Страница 24: ...the RF Port select key gives access to the RF port selection soft key list The possible selections are N out N in N out ANT in BNC out ANT in BNC out N in Typical settings for direct testing are N out...
Страница 25: ...the form of a logical identity Other messages are PASSED WORKING CHANNEL Other failure messages are FAIL CHANNEL ASSIGNMENT No working channel signaling detected FAIL NOT ON CONTROL CHANNEL Repeater i...
Страница 26: ...RTED BY USER User halted program before test was complete PASSED CLEARED DOWN HS data deviation The HS data deviation test measures the frequency deviation of the control channel signal from the repea...
Страница 27: ...peater Failure messages are FAIL ABORTED BY USER User halted program before test was complete FAIL NO MODULATION No modulation has been received from the repeater FAIL UNSTABLE DEMOD Demodulation was...
Страница 28: ...ed by the repeater on the current working channel The test fails if the RF frequency is found to be outside of the prescribed limits The message FAIL OUT OF RANGE is displayed Other messages are FAIL...
Страница 29: ...repeater The test fails if the signal to noise level is below the prescribed limit The Service Monitor AF generator frequency is set to 1 kHz and its level is adjusted until the repeater generates the...
Страница 30: ...sion circuits The test fails if the compression ratio is outside the tolerance limit The Service Monitor adjusts the AF level until the repeater generates the nominal modulation level then increases t...
Страница 31: ...x distortion Failure messages are FAIL ABORTED BY USER User halted program before test was complete FAIL LOW DEMOD LEVEL Receiver audio level 5 mV Rx S N Receiver S N The Rx S N test measures the sign...
Страница 32: ...r circuits Refer to Tx Compression test earlier in this section The Service Monitor generates an RF carrier modulated at the nominal modulation level It increases the modulation level by 5 dB and meas...
Страница 33: ...f RF power can cause electric shocks or skin burns which can have lasting effects RF Input Ports Before making connections to a repeater ensure that the output power from the repeater will not exceed...
Страница 34: ...test program are displayed and placed into the results store To make a permanent record of the results when the program has finished you can print out a hard copy using the print store key To run the...
Страница 35: ...set to the deviation level specified for the system unless the value is required to be different to perform a specific test This is adjustable either by manual entry or by using the rotary control MOD...
Страница 36: ...ayed on the screen are also output to a connected printer log to store All messages displayed on the screen are output to the automatic test results store accessible from the AUTO screen stop log Stop...
Страница 37: ...il the facility is unlocked To enable the data display mode press the DATA key at the left hand side of the screen The data display mode allows you to view the data messages which are sent between the...
Страница 38: ...st and is selected by using either the up or down keys or by using the variable rotary control Above this window is shown the full title of the codeword The binary display of the codeword is presented...
Страница 39: ...s are generated when a MI BASIC TEST command is executed Error Code Error String 0 test passed 1 undefined test failure 101 INVALID PARAMETERS 102 TIMED OUT 103 ABORTED BY USER 104 NOT ON CONTROL CHAN...
Страница 40: ...ta key 2 5 Error codes for NUMRESULTS A 1 G General testing program 1 2 Group identity number 2 8 I Identity number Group 2 8 K Key SYSTEM 2 2 L Logical identity number Radio 2 8 Logical identity numb...
Страница 41: ...13 Clear From Testset 2 14 Data Performance 2 14 RF Frequency 2 16 RF SINAD 2 15 2 16 Rx Distortion 2 19 Rx Expansion 2 20 Rx S N 2 19 Rx Sensitivity 2 20 Rx SINAD 2 18 Tx Compression 2 18 Tx Distorti...
