4-8 Transceiver Performance Testing
*** MDC
* See Table 4-4
Table 4-6: Transmitter Performance Checks
(Models with ”G” in location 10 of model number EX:AAH25RDH9GB6AN)
Test
Name
Service Monitor Radio Test Set Comments
Reference
Frequency
Mode: PWR MON
4th channel test frequency*
Monitor: Frequency error
Input at RF In/Out
TEST MODE,
Test Channel
4 carrier
squelch
PTT to continu-
ous (during the
performance
check)
Frequency error
±200 Hz VHF
±600 Hz UHF
±60 Hz Low Band
Power RF As above As above As above Refer to Specifications
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 out-
put at
antenna
Remove modu-
lation input
Press PTT switch on
radio. Say “four” loudly
into the radio mic.
Measure deviation:
VHF, UHF, 800 MHz,
Low 1 and Low 2:
≥ 4.0 kHz but ≤ 5.0 kHz
(25 kHz Ch Sp)
Voice
Modulation
Mode: PWR MON
4th channel test frequency*
atten to -70, input to RF In/
Out
Monitor: DVM, AC Volts
Set 1 kHz Mod Out level for
0.025Vrms at test set,
80mVrms at AC/DC test set
jack
As above As above, meter
selector to mic
Deviation:
VHF, UHF, 800 MHz,
Low 1 and Low 2
≥ 4.0 kHz but ≤ 5.0 kHz
(25 kHz Ch Sp) Global.
5 kHz (20 kHz Ch Sp)
U.S. and Canada.
High-Speed
Data Modu-
lation***
As above TEST MODE,
Test Channel
4 high speed
output at
antenna
PTT to continu-
ous (during the
performance
check).
Deviation: 800 MHz,
VHF, UHF, Low 1 and
Low 2: ≥ 2.5 kHz but
≤ 3.5 kHz (25 kHz Ch
Sp)
Low-Speed
Data Modu-
lation
800,UHF
As above TEST MODE,
Test Channel
4 TLS output
at antenna
PTT to continu-
ous (during the
performance
check)
Deviation:
VHF, UHF, 800MHz, :
≥500Hz but ≤ 1000Hz
(25 kHz Ch Sp).
DTMF
Modulation
As above,
4th channel test frequency*
TEST MODE,
Test Channel
4 DTMF out-
put at
antenna
As above Deviation:
VHF, UHF, 800MHz,
Low 1and Low 2:
≥ 3.05 kHz but ≤ 3.45
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:
VHF, UHF, 800MHz,
Low 1 and Low 2:
≥500Hz but ≤ 1000Hz
(25 kHz Ch Sp).
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