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Chapter 8, Signaling Decoder Screen
Using the EDACS Decoder
Make Basic Transmitter Measurements
1. Key the mobile’s transmitter and verify that its transmit indicator is on. The call type,
Group ID, and Logical ID information transmitted by your mobile is displayed under
the Data field.
2. With the transmitter still keyed, press the DUPLEX key to access the DUPLEX TEST
screen. TX Frequency and TX Power are displayed.
Making Other Transmitter Measurements
By connecting Audio Frequency Generator 1 (AFGen 1) to your transmitter’s
microphone input, you can make calibrated modulation measurements; such as
microphone sensitivity, modulation limiting, and transmitter frequency response.
1. Connect the AUDIO OUT port of the Test Set to your mobile’s microphone input.
2. Access the DUPLEX TEST screen.
3. Set the upper part of the AFGen1 To field to Audio Out.
4. Use the lower part of the AFGen1 To field to adjust the output level into the micro-
phone line.
5. Use the AFGen1 Freq field to adjust the audio generator’s frequency.
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