6 - 10 MTM700 Mobile Radio / Detailed Service Manual TEST SETUP & TESTING
Actual RSSI measured
=IFR RF Gen Level - Cable insertion loss +/- other stray losses.
Range of Actual RSSI measured
= -90dBm - XdB (cable) +/- 1 dB.
Radio RSSI result should be within the range of Actual RSSI.
To stop the “Trace” process, perform the following. When performing steps 11 trough 14,
make sure that you press the control head keys sequentially (less than a second between
every consecutive press):
11. Press the “Right” navigation key.
12. Press the “ 1 “ key, and “Menu” key.
13. Press the “ 2 “ key, and “Menu” key.
14. Press the “ 3 “ key.
Hereafter, there is no need for quick sequence of pressing the control head keys.
15. Press “OK“ using the right (soft) key.
16. Press “Stop” using the Right (soft) key.
17. Press “Back” using the Left (soft) key twice.
Transmitter Tests
1. Press the “Mode” key on the radio until “Range 1” is displayed.
2. Change to one of the available groups using the “Down” navigation key.
3. In the IFR Manual Test Mode press the “RF Gen Level” soft key. Enter “-90dBm” by
pressing the data keys and “RF Gen Level” key.
4. Press the “PTT” of the radio and monitor the IFR “Manual Test” screen which displays
the Power Profile, Burst Power, Timing Error, Frequency Error and Vector Error.
Note: You have to hold the PTT in the pressed position long enough to enable you to
read the results.
- Power Profile: Passed.
- Burst Power Required Results: 33-37dBm.
- Timing Error: <
0.25 symbols.
- Vector Error: Max 10% RMS,
Max 30% Peak,
Max 5% Residual.
- Frequency Error: +/- 80Hz.
5. Press the “Clear Down” soft key, to proceed with other tests.
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