Operating Manual for COMMUNICATIONS SERVICE MONITOR

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INSTALLATION Check that the equipment has been installed in accordance with the instructions provided (e.g. that ventilation is adequate, supply isolators are accessible, supply wiring is adequate and properly routed). The condition of the mains supply lead and supply connector(s). Check that the mains supply switch isolates the Service Monitor from the supply. The correct rating and type of supply fuses. Security and condition of covers and handles. Check the supply indicator functions (if fitted). Check the presence and condition of all warning labels and markings and supplied safety information. Check the wiring in re-wireable plugs and appliance connectors. If any defect is noted this should be rectified before proceeding with the following electrical tests. 2. Earth bonding tests Earth bonding tests should be carried out using a 25A (12V maximum open circuit voltage) DC source. Tests should be limited to a maximum duration of 5 seconds and have a pass limit of 0.1 Ω after allowing for the resistance of the supply lead. Exceeding the test duration can cause damage to the equipment. The tests should be carried out between the supply earth and exposed case metalwork, no attempt should be made to perform the tests on functional earths (e.g. signal carrying connector shells or screen connections) as this will result in damage to the equipment. 3. Insulation tests 4. Rectification A 500 V DC test should be applied between the protective earth connection and combined live and neutral supply connections with the equipment supply switch in the ‘on’ position. It is advisable to make the live/neutral link on the appliance tester or its connector to avoid the possibility of returning the Service Monitor to the user with the live and neutral poles linked with an ad-hoc strap. The test voltage should be applied for 5 seconds before taking the measurement. IFR Ltd employs reinforced insulation in the construction of its products and hence a minimum pass limit of 7 MΩ should be achieved during this test. Where a DC power adapter is provided with the Service Monitor the adapter must pass the 7 MΩ test limit. We do not recommend dielectric flash testing during routine safety tests. Most portable appliance testers use AC for the dielectric strength test which can cause damage to the supply input filter capacitors. It is recommended that the results from the above tests are recorded and checked during each repeat test. Significant differences between the previous readings and measured values should be investigated. If any failure is detected during the above visual inspection or tests, the Service Monitor should be disabled and the fault should be rectified by an experienced Service Engineer who is familiar with the hazards involved in carrying out such repairs. Safety critical components should only be replaced with equivalent parts, using techniques and procedures recommended by IFR Ltd. The above information is provided for guidance only. IFR Ltd designs and constructs its products in accordance with International Safety Standards such that in normal use they represent no hazard to the operator. IFR Ltd reserves the right to amend the above information in the course of continuing its commitment to product safety. 2-12 46882-311D
Cleaning OPERATING MANUAL 2945A Before commencing any cleaning, switch off the Service Monitor and disconnect it from the supply. The exterior surface of the case may be cleaned using a soft cloth moistened in water. Do not use aerosol or liquid solvent cleaners. 46882-311D 2-13
Page 1: Contains Operating Manual for COMMU
Page 4 and 5: About this manual This manual expla
Page 6 and 7: Contents Precautions ..............
Page 8 and 9: PRECAUTIONS Fuses WARNING WARNING W
Page 10 and 11: Contents List of figures Chapter 1
Page 12 and 13: Receiver testing OPERATING MANUAL 2
Page 14 and 15: Systems testing Cellular and trunke
Page 16 and 17: Receiver measurements RF signal gen
Page 18 and 19: Audio Frequency Meter Frequency Ran
Page 20 and 21: OPERATING MANUAL 2945A Modulation M
Page 22 and 23: General features OPERATING MANUAL 2
Page 24 and 25: OPERATING MANUAL 2945A Printers sup
Page 26 and 27: OPERATING MANUAL 2945A 46882-311D 1
Page 28 and 29: INSTALLATION Introduction This chap
Page 30 and 31: INSTALLATION British Country IEC 32
Page 32 and 33: INSTALLATION RF and AF connections
Page 34 and 35: INSTALLATION GPIB The pin connectio
Page 36 and 37: INSTALLATION Test No 6 Transmitter
Page 40 and 41: Chapter 3 LOCAL OPERATION Contents
Page 42 and 43: OPERATING MANUAL 2945A Fig. 3-11 Sp
Page 44 and 45: OPERATING MANUAL 2945A The informat
Page 46 and 47: OPERATING MANUAL 2945A undefined si
Page 48 and 49: OPERATING MANUAL 2945A (31) Serial
Page 50 and 51: Setup page 1 This page allows the f
Page 52 and 53: OPERATING MANUAL 2945A Power Up Fro
Page 54 and 55: Brief descriptions Using the test m
Page 56 and 57: Tx test (transmitter testing) Overv
Page 58 and 59: WARNING Hot surfaces OPERATING MANU
Page 60 and 61: OPERATING MANUAL 2945A Directional
Page 62 and 63: Audio distortion measurement OPERAT
Page 64 and 65: OPERATING MANUAL 2945A shape settin
Page 66 and 67: OPERATING MANUAL 2945A The harmonic
Page 68 and 69: OPERATING MANUAL 2945A trigger poin
Page 70 and 71: External attenuators OPERATING MANU
Page 72 and 73: *DUPLEX* OPERATING MANUAL 2945A All
Page 74 and 75: OPERATING MANUAL 2945A The input si
Page 76 and 77: Connections MOD GEN 1 MOD GEN 2 TON
Page 78 and 79: WARNING Output level setting Hot su
Page 80 and 81: OPERATING MANUAL 2945A External Mod
Page 82 and 83: OPERATING MANUAL 2945A See Fig. 3-8
Page 84 and 85: OPERATING MANUAL 2945A 20 dB signal
Page 86 and 87: Selectivity 2041 Signal Generator S
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OPERATING MANUAL 2945A difference i
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Systems TONES GEN MOD GEN 1 MOD GEN
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Setting up OPERATING MANUAL 2945A T
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OPERATING MANUAL 2945A (6-2) to be
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Look and Listen ! ! I/O SWITCH- ING
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OPERATING MANUAL 2945A When operati
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Input filtering OPERATING MANUAL 29
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Parameter Test mode Tx frequency Tx
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Observing tones signals in other te
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Fig. 3-19 RF Sequential tones encod
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OPERATING MANUAL 2945A of the orang
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Output level Tone selection OPERATI
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OPERATING MANUAL 2945A Return to th
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OPERATING MANUAL 2945A Press the [T
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OPERATING MANUAL 2945A The POCSAG t
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OPERATING MANUAL 2945A • Set the
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The soft keys have the following fu
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Recalling Results OPERATING MANUAL
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OPERATING MANUAL 2945A If a memory
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OPERATING MANUAL 2945A Key in the e
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Printer Access OPERATING MANUAL 294
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FROM LOGIC CIRCUITS Table 3-2 Rear
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Test mode screen and menu (1.0). HE
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Test mode screen and menu (2.0). Tx
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Test mode screen and menu (3.0). Rx
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Test mode screen and menu (4.0). Dx
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Test mode screen and menu (5.0). SY
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Test mode screen and menu (6.0). SP
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Test mode screen and menu (7.0). AF
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Contents List of figures Chapter 4
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The display OPERATING MANUAL 2945A
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Tx test mode OPERATING MANUAL 2945A
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Receiver circuits Input switching B
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Third frequency changer/mixer OPERA
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RF generator Modulators RF amplifie
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AF test mode Systems mode OPERATING
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TECHNICAL DESCRIPTION Simplified bl
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ACCEPTANCE TESTING Introduction Res
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ACCEPTANCE TESTING RF output tests
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ACCEPTANCE TESTING (3) Check that t
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ACCEPTANCE TESTING Test equipment D
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ACCEPTANCE TESTING (12) Refer to Re
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ACCEPTANCE TESTING Frequency modula
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ACCEPTANCE TESTING Audio generator
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ACCEPTANCE TESTING Audio voltmeter
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ACCEPTANCE TESTING UUT LF generator
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ACCEPTANCE TESTING Test equipment D
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Page 186 and 187:
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ACCEPTANCE TESTING UUT N TYPE OUTPU
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ACCEPTANCE TESTING Power meter SENS
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ACCEPTANCE TESTING Acceptance Test
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ACCEPTANCE TESTING Level (dBm) Resu
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ACCEPTANCE TESTING Results table 5-
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ACCEPTANCE TESTING AF generator 1 f
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ACCEPTANCE TESTING Frequency DVM re
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ACCEPTANCE TESTING Carrier frequenc
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Contents List of tables List of fig
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Précautions OPERATING MANUAL 2945A
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Precauzioni OPERATING MANUAL 2945A
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Features OPERATING MANUAL 2945A Thi
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OPERATING MANUAL 2945A RF connector
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CW POWER 1000W 100W 10W 1W 100mW 10
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VSWR Return loss (dB) Table A-1 Con
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OPERATING MANUAL 2945A The bar char
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DIRECTIONAL COUPLER CH. 1 CH. 2 TO
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LIGHT-WEIGHT DIRECTIONAL POWER HEAD
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Page 230 and 231:
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
INDEX H Hard copy .................
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Operating Manual for COMMUNICATIONS SERVICE MONITOR

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