TP620 Service Manual
6.2.2. Test Tools
•
Integrated tester
•
Programming lead
•
AEROFLEX 3920
•
Spectrum analyzer FSU
6.2.3. Tx Test and Modulation
Item
Steps
Specification
Requirement
Frequency
stability
1. Enter computer tuning mode.
2. Enter “RF stability adjustment”.
3. Adjust PC software value, and observe integrated tester
frequency value.
4. Adjust to nominal frequency ±100Hz.
≤0.5ppm
Tx high power
1. Enter computer tuning mode.
2. Enter tuning mode “Tx high power”.
3. Adjust PC software value, observe integrated tester frequency
value.
4. Adjust to the nominal test power.
UHF: 4.2±0.2W, VHF: 5W±0.2W
5. Adjust the frequencies by turns.
UHF:3.8-4.5W
current: less than
1.8A
VHF: 4.5-5.2W
current: less than
1.8A.8A
Tx low power
1. Enter computer tuning mode.
2. Enter tuning mode “Tx low power”.
3. Adjust PC software value, observe integrated tester power
value.
4. Adjust to nominal test power 1±0.2W.
5. Adjust the frequencies by turns.
0.8-1.2W
current: less
than1A
I path and Q
path
amplitude
adjustment for
analog
transmit
1. Enter computer tuning mode,
2. Enter “analog Tx I path amplitude and Q path amplitude” to
adjust I oath value.
3. Observe FM Deviation as 1.95±0.05kHz.
4. Click “OK” to save.
1.9KHZ~2.0KHZ
Page 18 of 61
Summary of Contents for TP620
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