Service Manual Part 1

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This Section details test procedures will confirm that the T2000 has been adjusted cor-
rectly and is fully operational.
The following topics are covered:
Section Title Page
4.1 Test Equipment Required 4.2
4.2 Connecting The Radio 4.3
4.3 Trunked Radios 4.4
4.3.1 Trunking System Check 4.4
4.4 Receiver Performance Tests 4.5
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.7
4.4.8
To Check The Squelch Operation
To Check The Squelch Ratio
To Check The Audio Output Level And Distortion
To Check The Sinad Sensitivity
To Check The Signal+Noise To Noise Ratio
To Check The Ultimate Signal To Noise Ratio
RSSI
To Check The Operation Of The Noise Blanker
4.5
4.5
4.6
4.6
4.7
4.7
4.7
4.8
4.5 Transmitter Performance Tests 4.9
4.5.1
4.5.1.1
4.5.1.2
4.5.1.3
4.5.2
4.5.2.1
4.5.2.2
4.5.3
Audio Processor
To Check The Limiter Circuit Operation
To Check The Audio ALC Operation
To Check The Gain Of The Audio Processor
Modulation Characteristics
To Check The Above Limiting Response
To Check The Below Limiting Response
To Check The RF Power Control Circuit
4.9
4.9
4.9
4.10
4.10
4.10
4.10
4.11