MT-4E Analog and P25 Digital Radio Systems - Daniels Electronics

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Chapter 5: Daniels Radio System Testing ........................... 17
MT-4E Testing with the IFR 2975 by Aerofl ex .......................................... 17
General Set-Up and Connections ............................................................ 18
Uploading Daniels Confi gurations to the IFR 2975 .......................................18
Radio Service Software (RSS) ......................................................................19
Control Cards ................................................................................................19
Adapters, Cables and Extender Cards ..........................................................19
Daniels MT-4E Radio System Test Sheet ......................................................19
Turning OFF the MT-4E Receiver and Transmitter Modules .........................20
Audio Connections ........................................................................................21
System Regulator Testing ........................................................................ 22
System Voltage Testing .................................................................................22
Receiver Testing ....................................................................................... 23
Receiver Analog Testing ................................................................................23
Receiver Digital Testing .................................................................................28
Receiver Bit Error Rate Testing .....................................................................30
Receiver RF Preselector Alignment and Tuning ............................................32
Receiver Reference Oscillator Adjustment ....................................................34
Transmitter Testing ................................................................................... 37
Transmitter Analog Testing ............................................................................37
Transmitter CTCSS Testing ...........................................................................42
Transmitter Digital Testing .............................................................................45
Transmitter Modulation Fidelity Testing .........................................................47
Transmitter Reference Oscillator Adjustment ................................................49
System Testing ......................................................................................... 51
Duplex Analog Testing ...................................................................................51
Duplex Digital Testing ....................................................................................54
Chapter 6: Additional Radio System Tests ........................... 57
Radio System Testing Through Filtering Equipment ................................ 58
Radio System Testing with the Antenna Connected ................................ 59
VSWR ............................................................................................................59
Receiver Desense .........................................................................................60
RF Carrier Signal Levels on Links between Sites .........................................61
Spurious Signals over the Air ........................................................................62
Chapter 7: Blank Worksheets .............................................. 63
Maintenance
Guide
MG-001 Daniels MT-4E Radio Systems
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