Motorola XTS 2500

Performance Checks
18
Table 10. Transmitter Performance Checks
Test Name System Analyzer Radio Test Set Comments
Reference
Frequency
Mode: PWR MON 4th
channel test frequency*
Monitor: Frequency error.
Input at RF In/Out
TEST MODE, 4
CSQ
PTT to continuous
(during the performance
check).
Frequency error to be ≤ ±1.3
kHz.
Power RF As above As above,
4 CSQ
As above Refer to Maintenance
Specifications page in front of
manual.
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,
4 CSQ
As above, meter
selector to mic
Deviation: ≥ 4.1 kHz but ≤
5.0 kHz
Voice
Modulation
(internal)
Mode: PWR MON 4th
channel test frequency*
atten to –70, input to RF In/
Out
TEST MODE, 4
CSQ, output at
antenna
Remove modulation
input
Press PTT switch on radio.
Say “four” loudly into the
radio mic. Measure
deviation: ≥ 4.1 kHz but ≤ 5.0
kHz
PL Modu-lation
(radios with
conven-tional,
clear mode,
coded squelch
oper-ation only)
Change frequency to a
conventional transmit
frequency
Conventional
coded squelch
personality
(clear mode
operation) 4
TPL
As above Deviation: ≥ 500Hz but ≤
1000Hz
Talkaround
Modulation
(radios with
conventional,
clear mode,
talk-around
operation only)
Change frequency to
conventional talk-around
frequency.
Mode: PWR MON
deviation, attenuation to –70,
input to RF In/Out.
Monitor: DVM, ac volts Set
1 kHz Mod Out level for
25mVrms at test set.
Conventional
talkaround
personality
(clear mode
operation)
1 CSQ
As above Deviation: ≥ 4.1 kHz but ≤
5.0 kHz
*See Table 7 on page 13