Motorola MTM800 FuG ET, Basic Service Manual

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Test Setup & Testing for 380–430 MHz 5.1 - 13
Duplex Test (Phone/Private Mode)
Digital Duplex Test (Tx)
1. In the IFR Manual Test Mode press the “RF Gen Level” soft key. Enter “-50dBm” by
pressing the data keys and “RF Gen Level” key.
2. Dial a random 4 digit number (e.g. “9359”) using the alphanumeric keys of the
terminal, press “Calltype” using the Lower (soft) key until “Phone #” is displayed and
press the “Send” Key .
The following results are displayed on the IFR “Manual Test” Screen
Power Profile: Passed
Burst Power Required Results: 10–22dBm
Timing Error: < 0.25 Symbols.
Frequency Error: -/+ 100 Hz
Vector Error: Max 10% RMS,
Max 30% Peak,
Max 5% Residual.
3. Press the “Talk Back” soft key.
4. Speak into the terminal microphone and hear your speech (after a short delay) from
the terminal loudspeaker.
Note: If you need more details, press the “Duplex Test” mode key.
5. Press the “duplex test (Tx)” soft key. The “Digital Duplex test” results will be displayed
on the IFR screen providing you with either one of the following:
• bar charts measurement capabilities showing Tx Power, Frequency Error and
Vector RMS in one screen
• Tx Power (more details in Power Analyser)
• Frequency Error (more details in Spectrum Analyser)
• Vector RMS (more details in Vector Analyser)
For Power Analyser Graph:
6. Press “power ana” soft key.
7. Check that the power frame falls within the limits.
For Spectrum Analyser Graph:
8. Press “spec ana” soft key.
9. Monitor the Tx frequency.
For Vector Analyser Diagram:
10. Press the “vector ana” soft key.