Transmitter Performance Checks; Table 5-6. Receiver Tests For Astro Conventional Channels; Table 5-7. Transmitter Performance Checks - Motorola ASTRO XTS 5000 Basic Service Manual

5-8

Table 5-6. Receiver Tests for ASTRO Conventional Channels*

Test Name System Analyzer
Bit Error rate Mode: Proj 25 Std
(BER) Floor RF Control: Gen
Output Level: -47 dBm
Proj 25 Dev: 2.83 kHz
Code: 1011 Hz PAT
Reference As above; lower the
Sensitivity output level until 5% BER
is obtained
Audio Output Mode: Proj 25 Std
Distortion RF Control: Gen
Output Level: -47 dBm
Proj 25 Dev: 2.83 kHz
Code: 1011 Hz PAT
Meter: Ext. Distortion
Residual Mode: Proj 25 Std
Audio Noise RF Control: Gen
Ratio Output Level: -47 dBm
Proj 25 Dev: 2.83 kHz
Code:
A) 1011 Hz PAT
B) Silence PAT
Meter: AC Volts
*
These tests require a communications system analyzer with the ASTRO 25 test options.
5.5

Transmitter Performance Checks

The following tables outline the performance checks for the transmitter.
Test Name System Analyzer
Reference RF Control: Monitor
Frequency Meter: RF Display
Display: Bar Graphs
Freq: Selected radio TX
freq.
RF Power As above
July 16, 2004
Radio
Radio Tuner
Software (Bit Error
Rate screen) is
required
As above
Radio Tuner
Software not used;
Radio: Out of
TEST MODE;
Select a
conventional
ASTRO channel
As above

Table 5-7. Transmitter Performance Checks

Radio
TEST MODE CSQ
channel* or
programmed
conventional
channel
As above
Performance Checks: Transmitter Performance Checks
Test Set
PTT to OFF
(center)
As above
PTT to OFF
(center)
Meter selector to
Audio PA
Spkr/Load to
Speaker
As above
Test Set
PTT to continuous
(during the
performance
check).
As above
Comments
BER < 0.01%
(Use test setup shown in
Figure 6-1 on page 6-1)
Output level < 0.35 µV
(-116 dBm)
(Use test setup shown in
Figure 6-1 on page 6-1)
Distortion < 3.0%
Residual Audio Noise Ratio
-45 dB
Comments
VHF: 2.0 ppm
(272–348 Hz)
UHF R1: 2.0 ppm
(760–940 Hz)
UHF R2: 2.0 ppm
(900–1040 Hz)
700/800 MHz: 1.5 ppm
(1.15–1.3 kHz)
VHF: 1–6 Watts
UHF R1: 1–5 Watts
UHF R2: 1–5 Watts
700/800 MHz:
764–806 MHz: 2.5 Watts
806–870 MHz: 3 Watts
6881094C28-D