Checking Uhf Duplexer After Tuning; Testing The Gtr 8000 Base Radio Performance With A Service Monitor For Integrated Voice And Data; Deviation Standards (Digital Operation); Table 47: Deviation Standards For Astro 25 System Test Patterns - Motorola ASTRO 25 GTR 8000 Manual

MN003286A01-E
Chapter 5: GTR 8000 Base Radio Optimization
5.10.5.8

Checking UHF Duplexer After Tuning

Procedure:
1 Ensure all notch adjustment lock nuts (6) are tight.
2 Ensure all pass adjustment lock nuts (6) are tight.
5.11
Testing the GTR 8000 Base Radio Performance with a Service
Monitor for Integrated Voice and Data
The service monitor is used to test and measure the transmitter and receiver characteristics of the
base radio. The Service Monitor may be connected to a base radio to perform tests and measurements
designed to determine whether the equipment is operating within specifications.
The sections that follow contain procedures performed when you first set up your system, and can be
scheduled on a regular basis as part of the maintenance policies of your organization. Topics covered
include:
• Deviation Standards (Digital Operation) on page 184
• Monitoring the Power Supply Module on page 185
• Verifying Receiver Performance for FDMA Operation on page 185
• Verifying Receiver Performance (Analog Operation) on page 190
• Checking Receiver Sensitivity (Self-Test Method) (IV and D) on page 192
• Monitoring the Transmitter Metering Points on page 193
• Verifying Transmitter Performance (Digital Operation) on page 193
• Verifying Transmitter Performance (Analog Operation) on page 195
5.11.1

Deviation Standards (Digital Operation)

NOTICE: These specifications allow a tolerance of ±10%. However, because the accuracy of
the service monitor is only ±5%, the allowable tolerance in the measured deviation is ±5% and
not ±10%.

Table 47: Deviation Standards for ASTRO 25 System Test Patterns

Signal
low signal deviation
sow signal wide pulse deviation
standard deviation
standard wide pulse deviation
V.52 deviation
V.52 wide pulse deviation
C4FM deviation
C4FM wide pulse deviation
184
Minimum Devia- Nominal Devia-
tion
0.84 kHz
undetermined
2.55 kHz
undetermined
2.91 kHz
undetermined
2.91 kHz
undetermined
Maximum Devia-
tion
0.93 kHz 1.02 kHz
1.00 kHz undetermined
2.83 kHz 3.11 kHz
3.00 kHz undetermined
3.23 kHz 3.55 kHz
3.00 kHz undetermined
3.23 kHz 3.55 kHz
3.00 kHz undetermined
tion