Motorola HT1250-LS+

4-6 Transceiver Performance Testing
Table 4-5. Transmitter Performance Checks
Test
Name
Service Monitor Radio Test Set Comments
Reference
Frequency
Mode: PWR MON
4th channel test fre-
quency*
Monitor: Frequency
error
Input at RF In/Out
Test Channel 4
TEST MODE
CSQ
PTT to contin-
uous (during
the perfor-
mance check)
Frequency error
±150 Hz (200 NHz models)
±400 Hz (700 MHz models)
Power RF As above As above As above Refer to Specifications
Voice
Modulation
(internal)
Mode: PWR MON
4th channel test fre-
quency*
atten to -70, input to RF
In/Out
Test Channel 4
TEST MODE
CSQ Output at
antenna
Remove mod-
ulation input
Press PTT switch on radio.
Say “four” loudly into the
radio mic. Measure devia-
tion:
> 1.5 kHz but ≤ 2.5 kHz
(12.5 kHz Ch Sp)
Voice
Modulation
Mode: PWR MON
4th channel test fre-
quency*
atten to -70, input to RF
In/Out
Monitor: DVM, AC Volts
Set 1kHz Mod Out level
for 0.025 Vrms at test
set,
80mVrms at AC/DC test
set jack
As above As above,
meter selector
to mic
Deviation:
> 1.5 kHz but ≤ 2.5 kHz
(12.5 kHz Ch Sp)
High-Speed
Data Modu-
lation***
As above Test Channel 4
TEST MODE
HSS Output at
antenna
PTT to contin-
uous (during
the perfor-
mance check).
Deviation:
> 1.5 kHz but ≤ 2.5 kHz
(12.5 kHz Ch Sp)
DTMF
Modulation
As above,
4th channel test fre-
quency*
Test Channel 4
TEST MODE
DTMF Output at
antenna
As above Deviation:
> 1.5 kHz but ≤ 1.8 kHz
(12.5 kHz Ch Sp)
PL/DPL
Modulation
As above
4th channel test fre-
quency*
BW to narrow
Test Channel 4
TEST MODE TPL
OR DPL
Output at antenna
As above Deviation:
>
250 kHz but ≤ 500 kHz
(12.5 kHz Ch Sp)
* see Table 4-3
*** MDC