5.1 - 4 Test Setup & Testing for 380–430 MHz
Call Processing Tests
1. Talk Back
2. Call to Mobile
Duplex Test
1. Digital Duplex Test (Tx)
Measurement Capabilities:
Bar chart display for Tx Power, Frequency Error, Vector Error RMS, Power Analyzer,
Spectrum Analyzer, Vector Analyzer, Vector Diagrams.
Configuration of the IFR 3901/3902 System Setup
The setup depends on the firmware version of the IFR 3901/3902, the firmware version of
the radio, and the programmed parameters of the radio. Perform the following steps to
configure the IFR 3901/3902 Digital Radio Test Set:
1. Turn ON the IFR.
2. Press the “Config” soft key twice, then go to “System” followed by “TETRA”. Select
“MS”.
3. Configure the parameters for the “Channel Plan”.
a. Press the “Config” soft key twice, then go to “Configure”, followed by “Channel
Plan”, and press the “Select” soft key.
b. Press the “Select” soft key again, and select “No Plan”; press “New Plan”.
c. Enter the parameters outlined below:
Channel Plan: TETRA 380+0MS
Frequency Band: 3 (300 MHz)
Offset: 0 (0 kHz)
Duplex Spacing: 0 (10 MHz)
Reverse Operation: 0 (Normal)
Channel Block 1:
Lowest Channel: 0
Highest Channel: 4000
Lowest Channel Downlink Freq: 380.125 MHz
Duplex Offset: 10 MHz
Channel Spacing: 25 kHz
d. Press the “Save” button at the top left panel on the screen.
e. To use this channel plan, press the “CONFIG” button, and select “Channel Plan”,
then select “TETRA 380+0MS”.
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