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3-4 TRANSCEIVER PERFORMANCE TESTING
* See Table 3-4.
Voice
Modulation
Mode: PWR MON
4th channel test frequency*
atten to -70, input to RF In/ Out
Monitor: DVM, AC Volts
Set 1kHz Mod Out level for
800mVrms at test set,
800mVrms at AC/DC test set
jack
As above As above,
meter selector
to mic
Deviation:
2.5 kHz Max.
(12.5 kHz Ch. Sp).
4 kHz Max.
(20 kHz Ch. Sp).
5 kHz Max.
(25 kHz Ch. Sp).
Voice
Modulation
(internal)
Mode: PWR MON
4th channel test frequency*
atten to -70, input to RF In/ Out
TEST MODE,
Test Channel 4
carrier squelch
output at
antenna
Remove
modulation
input
Deviation:
2.5 kHz Max.
(12.5 kHz Ch. Sp.).
4 kHz Max.
(20 kHz Ch. Sp.).
5 kHz Max.
(25 kHz Ch. Sp.).
High-Speed
Data
Modulation
As above TEST MODE,
Test Channel 4
high speed
output at
antenna
PTT to
continuous
(during the
performance
check).
Deviation:
1.5-2.0 kHz
(12.5 kHz Ch. Sp.).
2.3-3.2 kHz
(20 kHz Ch. Sp.).
3.0-4.0 kHz
(25 kHz Ch. Sp.).
DTMF
Modulation
As above,
4th channel test frequency*
TEST MODE,
Test Channel 4
DTMF output at
antenna
As above Deviation:
1.4-1.9 kHz
(12.5 kHz Ch. Sp.).
2.3-3.0 kHz
(20 kHz Ch. Sp.).
2.9-3.8 kHz
(25 kHz Ch. Sp.).
PL/DPL
Modulation
As above
4th channel test frequency*
BW to narrow
TEST MODE,
Test Channel 4
TPL
DPL
As above Deviation:
0.25-0.5 kHz
(12.5 kHz Ch. Sp.).
0.4-0.8 kHz
(20 kHz Ch. Sp.)
0.5-1.0 kHz
(25 kHz Ch. Sp.).
Table 3-5 Transmitter Performance Checks (Continued)
Test Name Communications Analyzer Radio Test Set Comment