Motorola MTM700, Подробное руководство по обслуживанию

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6 - 12 MTM700 Mobile Radio / Detailed Service Manual TEST SETUP & TESTING
- Frequency Error: -/+ 80Hz
- Vector Error: Max 10% RMS,
Max 30% Peak.
Max 5% Residual.
4. Press the “Talk Back” soft key.
5. Speak into the radio microphone and hear your speech (after a short delay) from the
radio loudspeaker.
Note: If you need more details, press the “Duplex Test” mode key.
6. 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:
7. Press “power ana” soft key.
8. Check that the power frame falls within the limits.
For Spectrum Analyser Graph:
9. Press “spec ana” soft key.
10. Monitor the Tx frequency.
For Vector Analyser Diagram:
11. Press the “vector ana” soft key.
12. Monitor the diagram for the following:
- press “vector error” soft key for vector error.
- press “mag error” soft key for magnitude error.
- press “phase error” soft key for phase error.
- Vector Error
- Magnitude Error
- Phase Error
For Vector Diagram:
13. Press the “vector diagram” soft key.
14. View the following:
- press “symbol constel” soft key for graphical symbol constellation.
- press “rotated vector” soft key to zoom in on the constellation.
- press “phase traject” soft key to view trajectory of the constellation.
15. Press the radio “End” key.