Motorola GP388 Series User Manual

Chapter 4
PERFORMANCE TESTING
1.0 Introduction
The receiver and transmitter performance tests are contained in Tables 4-1 and 4-2 respectively.
Refer to Chapter 5 for the test equipment set up. Note that all test measurements are taken at 25°C.
2.0 Receiver Performance Tests
The receiver performance tests are described in Table 4-1 below.
Table 4-1 Receiver Performance Checks
Test Name
Communications
Analyzer
Radio Test Set Comments
Reference
Frequency
Mode: PWR MON
Monitor: Frequency error
Input at RF In/Out
TEST MODE,
Test Channel
4 carrier
squelch
output at
antenna
PTT to
continuous
(during the
performance
check)
Frequency error to be
±200Hz VHF
±600Hz UHF
Rated Audio Mode: GEN
Output level: 1.0mV RF
Mod: 1kHz tone at
3kHz deviation
Monitor: DVM: AC Volts
TEST MODE
Test Channel
4 carrier
squelch
PTT to OFF
(centre), meter
selector to
Audio PA
Set volume control to
3.16Vrms
(GP320/340/360/380)
3.46Vrms
(GP344/388)
Distortion As above, except to
distortion
As above As above Distortion 3.0%
Typical
Sensitivity
(SINAD)
As above, except SINAD,
lower the RF level for 12dB
SINAD.
As above PTT to OFF
(center)
RF input to be
0.25µV
<0.35µ (GP344/388)
Noise
Squelch
Threshold
(only radios
with
conventional
system need
to be tested)
RF level set to 1mV RF As above PTT to OFF
(center), meter
selection to
Audio PA, spkr/
load to speaker
Set volume control to
3.16Vrms
(GP320/340/360/380)
3.46Vrms
(GP344/388)
As above, except change
frequency to a conventional
system. Raise RF level from
zero until radio unsquelches.
Out of TEST
MODE;
select a
conventional
system
As above Unsquelch to occur at
<0.25µV.
Preferred SINAD =
9-10dB

Motorola GP388 Series Specifications

General

Brand	Motorola
Model	GP388 Series
Category	Radio
Language	English