Digital Duplex Test (Tx) - Motorola TETRA MTH800 Basic Service Manual

TEST SETUP & TESTING 380-430MHz

Digital Duplex Test (Tx)

1. Perform the following test in "Phone" or "Private" mode.
2. Dial a random number "9359" using the Alphanumeric keys of the terminal
The following results are displayed on the IFR "Manual Test" Screen.
- Burst Power Required Results: 28-32dbm
- Power Profile: Passed
- Timing Error: <0.25 Symbols.
- Vector Error: Max 10% RMS, Max 30% Peak.
- Max 5% residual.
- Frequency Error: -/+ 100Hz
3. Press the "talk back" softkey. Place the inernal earpiece close to your ear.
Note: If you need more details, press the "Duplex Test" mode key.
4. Press the "duplex test (Tx)" softkey.
For Power Analyser Graph:
5. Press "power ana" softkey.
6. Check that the power frame falls within the limits.
For Spectrum Analyser Graph:
7. Press "Spec ana" softkey.
8. Monitor the Tx frequency.
For Vector Analyser Diagram:
9. Press the "Vec Anal" softkey
10. Monitor the constellation diagram.
MTH800 TETRA Handportable Terminal / Basic Service Manual
and press the "Send" Key.
Speak into the handset microphone and hear your speech (after a short
delay) from the handset internal earpiece.
The "Digital Duplex test" results will be displayed on the IFR screen providing
you with the following bar charts measurement capabilities:
- Power
- Vector RMS
- Frequency Error
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