9
TEST COMMUNICATIONS
NAME ANALYZER RADIO TEST SET COMMENTS
Reference Mode: PWR MON TEST MODE, PTT to continuous Frequency error to be < 150Hz.
Frequency 4th channel test frequency
◊
4 CSQ (during the
Monitor: Frequency error performance check).
Input at rf In/Out.
Power RF As above. As above, 4 CSQ As above. Refer to Maintenance Specifica-
tions page in front of manual.
Voice Mode: PWR MON As above, 4 CSQ As above, meter Deviation:
Modulation 4th channel test frequency
◊
selector to mic. VHF, UHF, and 800MHz:
atten to –70, input to RF In/Out, ≥ 3.6kHz but ≤ 5.0kHz.
Monitor: DVM, AC Volts
Set 1kHz Mod Out level for 900MHz: ≤ 2.5kH.
0.025Vrms at test set,
80mVrms at AC/DC test set jack
Low-Speed As above. TEST MODE PTT to continuous Deviation:
Data Modulation 4TLS (during the UHF, 800MHz: ≥ 500Hz but
800/900 UHF output at antenna performance check). ≤ 1000Hz.
Voice Mode: PWR MON TEST MODE, Remove modulation Press PTT switch on radio.
Modulation 4th channel test frequency
◊
4 CSQ, input. Say "four" loudly into the
(internal) atten to –70, input to RF In/Out. output at antenna. radio mic. Measure deviation:
VHF, UHF, and 800MHz:
≥ 3.8kHz but ≤ 5.0kHz.
900MHz: ≤ 2.5kHz.
High-Speed As above. TEST MODE, PTT to continuous Deviation:
Data 4 THS, (during the UHF and 800MHz:
Modulation*** output at antenna. performance check). ≥ 2.4kHz but ≤ 3.6kHz.
900MHz: ≥ 1.52kHz but ≤ 1.95kHz.
DTMF As above, TEST MODE, As above. Deviation:
Modulation 4th channel test frequency
◊
4 DTMF, VHF, UHF, and 800MHz:
output at antenna. ≥ 3.8kHz but ≤ 5.0kHz.
900MHz: ≥ 1.5kHz but ≤ 1.9kHz.
PL/DPL Change frequency to a Conventional coded As above. Deviation:
Modulation conventional transmit squelch personality VHF, UHF, and 800MHz:
(radios with frequency, BW to narrow. (clear mode ≥ 500Hz but ≤ 1000Hz.
conventional, operation).
clear mode, 4 TPL 900MHz: ≥ 250Hz but
coded squelch 4 DPL ≤ 500Hz.
operation only)
Talk-around Change frequency to conven- Conventional As above. Deviation:
Modulation tional talk-around frequency. talk-around UHF and 800MHz: ≥ 3.8kHz
(radios with Mode: PWR MON personality but ≤ 5.0kHz.
conventional, deviation, attenuation to –70, (clear mode
clear mode, input to RF In/Out operation). 900MHz: ≥ 1.95kHz but
talk-around Monitor: DVM, AC volts 1 CSQ ≤ 2.45kHz.
operation only) Set 1kHz Mod Out level for
25mVrms at test set.
Talk-around Change frequency to conven- Conventional As above. Deviation:
Modulation tional talk-around frequency. talk-around UHF and 800MHz: ≥ 3.6kHz
(radios with Mode: PWR MON personality but ≤ 4.4kHz.
conventional, deviation, attenuation to –70, (secure mode
secure mode, input to RF In/Out operation)
talk-around Monitor: DVM, AC volts Load key into
operation only) Mod: 1kHz out level for radio.
(**) 25mVrms at test set. 1 Sec.
Table 40-10. Transmitter Performance Checks
* 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
◊ See Table 40-6 or Table 40-8 as applicable.
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