Motorola APX 7000 Basic Service Manual page 59

Performance Checks: Transmitter Performance Checks
Test Name System Analyzer
Voice RF Control: Monitor
Modulation Meter: RF Display
(internal) Display: Bar Graphs
Freq: Selected radio TX
freq.
PL Modulation As above
(radios with
conventional,
clear mode,
coded squelch
operation only)
Secure As above
Modulation
(radios with
conventional,
secure mode,
talkaround
operation only)
*
See Table 5-4 on page
Table 5-8. Transmitter Tests for ASTRO Conventional Channels*
Test Name System Analyzer
RF Power Mode: Proj 25 Std
RF Control: Monitor
Meter: RF Display
Frequency As above
Error
Frequency As above
Deviation
*
These tests require a communications system analyzer with the ASTRO 25 test options.
Table 5-7. Transmitter Performance Checks (Continued)
As above
Conventional
coded squelch
personality (clear
mode operation)
or TPL channel
(test mode*)
Programmed
conventional
channel (secure
mode operation)
Load key into
radio.
1:5-5.
Radio Tuner
Software not
used.
Radio: Out of
TEST MODE;
Select a
conventional
ASTRO channel
As above
Radio Tuner
Software
(Transmitter Test
Pattern screen) is
required)
High use: Symbol
Rate PAT
Low use: Low
Symbol Rate P
Radio Test Set
Remove
modulation input.
PTT to OFF
(center)
PTT to continuous
(during the
performance
check)
As above
Radio Test Set
PTT to continuous
(during
measurement).
As above
PTT to OFF
(center)
Sec 1: 5-11
Comments
Press PTT button on radio.
Say "four" loudly into the
radio mic. Measure
deviation:
(12.5 kHz) ≥ 2.1 kHz but
≤ 2.5 kHz
(25 kHz) ≥ 4.1 kHz but
≤ 5.0 kHz
Deviation:
(12.5 kHz) ≥ 375 Hz but
≤ 500 Hz
(25 kHz) ≥ 500 Hz but
≤ 1000 Hz
Deviation:
≥ 3.7 kHz but ≤ 4.3 kHz
Comments
VHF: 1–6 Watts
700/800 MHz:
764–806 MHz: 2.5 Watts
806–870 MHz: 3 Watts
UHF1: 1–5 Watts
UHF2: 1–5 Watts
Error ≤ ±1.0 kHz
D
HIGH
≥ 2.543 kHz but
≤ 3.110 kHz
D
LOW
≥ 0.841 kHz but
≤ 1.037 kHz
(Use test setup shown in
Figure 6-1 on page 1:6-1)