Motorola GM140 Базовое руководство по обслуживанию - Страница 39
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RF Test Mode
Test Name
Voice
Mode: PWR MON
Modulation
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
Voice
Mode: PWR MON
Modulation
4th channel test
(internal)
frequency*
atten to -70, input to RF
In/ Out
DTMF
As above,
Modulation
4th channel test
frequency*
PL/DPL
As above
Modulation
4th channel test
frequency*
BW to narrow
* See Table 4-4
Table 4-5 Transmitter Performance Checks (Continued)
Communications
Analyzer
Radio
As above
As above,
meter selector
to mic
TEST MODE,
Remove
Test Channel 4
modulation
carrier squelch
input
output at
antenna
TEST MODE,
As above
Test Channel 4
DTMF output at
antenna
TEST MODE,
As above
Test Channel 4
TPL
DPL
Test Set
Comment
Deviation:
2.5 kHz Max.
(12.5 kHz Ch. Sp).
4 kHz Max.
(20 kHz Ch. Sp).
5 kHz Max.
(25 kHz Ch. Sp).
Deviation:
2.5 kHz Max.
(12.5 kHz Ch. Sp.).
4 kHz Max.
(20 kHz Ch. Sp.).
5 kHz Max.
(25 kHz Ch. Sp.).
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.).
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.).
4-5