Motorola MTP850, Service Manual, Page: 36 / 118

5.1 - 8 MTP850 TETRA Handportable Terminal / Basic Service Manual TEST SETUP & TESTING 380–430MHz
RF Tests
Receiver Tests
Note: This test requires programming the radio. Refer to 6802974C10 TETRA
Customer Programming Software (CPS).
Verify that your radio is in “Group Mode”.
1. Using the Depot version CPS, enable the Test Page field in the radio
codeplug and flash the radio.
2. Turn the radio ON.
3. Check that registration and “ITSI ---/---: xxxx” is displayed on the IFR “Manual
Test” screen
STATUS: REGISTRATION (ITSI ATTCHED)
GSSI: XXXXXXX SELECTED
Transmitter Tests
1. Verify that your radio is in “Test Group Mode”.
2. Press the “RF Gen Level” soft key. Enter “-90dBm” by pressing the data keys
and “RF Gen Level” Key.
3. Press the “PTT” of the radio and monitor the IFR “Manual Test” screen which
displays the Burst Power, Power Profile, Timing Error, Vector Error, and
Frequency Error.
Note: You have to hold the PTT in the pressed position long enough to enable
you to read the results.
- Burst Power Required Results: 28–32dBm (1W radio) or
30.5–34.5dBm (1.8W radio).
- Power Profile: Passed.
- Timing Error: -/+ 0.25 symbols.
- Vector Error: Max 10% RMS, Max 30% Peak, Max 5% residual.
- Frequency Error: -/+ 100Hz.
4. Press the “Clear Down” soft key, to proceed with other tests.