Table 10 Transmitter Performance Checks - Motorola HT-1000 Service Manual

TEST COMMUNICATIONS
NAME
Reference Mode: PWR MON
Frequency 4th channel test frequency
Monitor: Frequency error
Input at rf In/Out.
Power RF As above.
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 0.025Vrms at test
set, 80mVrms at AC/DC test set jack
Low-Speed As above.
Data Modulation
800/900 UHF
Voice Mode: PWR MON
Modulation 4th channel test frequency
(internal) atten to –70, input to RF In/Out.
High-Speed As above.
Data
Modulation***
DTMF As above,
Modulation 4th channel test frequency
PL/DPL Change frequency to a
Modulation conventional transmit
(radios with frequency, BW to narrow.
conventional,
clear mode,
coded squelch
operation only)
Talk-around Change frequency to conventional
Modulation talk-around frequency.
(radios with Mode: PWR MON
conventional, deviation, attenuation to –70,
clear mode, input to RF In/Out
talk-around Monitor: DVM, AC volts
operation only Mod: 1kHz Out level for 25mVrms
at test set.
Talk-around Change frequency to conventional
Modulation talk-around frequency.
(radios with Mode: PWR MON
conventional, deviation, attenuation to –70,
secure mode, input to RF In/Out
talk-around Monitor: DVM, AC volts
operation only Mod: 1kHz Out level for 25mVrms
(**) at test set.
* 800 MHz radios only
** The secure mode, talk-around modulation test is only required for trac mode radios which
do not have clearmode talk-around capability.
*** Trunked Only
When testing voice modulation in the continuous mode, AGC must be disabled.
See Table 6 or Table 8 as applicable.
14

Table 10 Transmitter Performance Checks

ANALYZER
TEST MODE,
4 CSQ
As above, 4
CSQ
As above, 4
CSQ
TEST MODE
4TLS
output at
antenna
TEST MODE,
4 CSQ,
output at
antenna.
TEST MODE,
4 THS,
output at
antenna.
TEST MODE,
4 DTMF,
output at
antenna.
Conventional
coded squelch
personality
(clear mode
operation).
4 TPL
4 DPL
Conventional
talk-around
personality
(clear mode
operation).
1 CSQ
Conventional
talk-around
personality
(secure mode
operation).
Load key into
radio
1 Sec.
RADIO TEST SET
PTT to continuous
(during the
performance
check).
As above.
As above, mete
selector to mic.
PTT to continuous
(during the
performance
check).
Remove
modulation
input.
PTT to continuous
(during the
performance
check).
As above.
As above.
As above.
As above.
COMMENTS
Frequency error to be < 150Hz.
Refer to Maintenance Specifica
tions page in front of manual.
Deviation:
VHF, UHF, and 800MHz:
3.6kHz but 5.0kHz.
Deviation:
UHF, 800MHz: 500Hz but
1000Hz.
Press PTT switch on radio.
Say "four" loudly into the
radio mic. Measure deviation:
VHF, UHF, and 800MHz:
3.8kHz but 5.0kHz.
900MHz: 2.5kHz.
Deviation:
UHF and 800MHz:
2.4kHz but 3.6kHz.
900MHz: 1.52kHz but 1.95kHz.
Deviation:
VHF, UHF, and 800MHz:
3.05kHz but 3.45kHz.
900MHz: 1.5kHz but 1.9kHz.
Deviation:
VHF, UHF, and 800MHz:
500Hz but 1000Hz.
900MHz: 250Hz but 500Hz.
Deviation:
UHF and 800MHz: 3.8kHz
but 5.0kHz.
900MHz: 1.95kHz but
2.45kHz.
Deviation:
UHF and 800MHz: 3.6kHz
but 4.4kHz.