Motorola XPR 7550e User Manual

Transceiver Performance Testing Display Model Test Mode 3-7
Table 3-5. Transmitter Performance Checks
Test Name
Communications
Analyzer
Radio Test Set Comments
Reference
Frequency
Mode: PWR MON
4th channel test
frequency*
Monitor: Frequency
error
Input at RF In/Out
TEST MODE,
Test Channel 4
carrier squelch
PTT to
continuously
transmit
(during the
performance
check)
Frequency error to be
±68Hz for VHF
±201Hz for UHF
±403Hz for 800/900
MHz
Power RF As above As above As above Low Power:
0.9 – 1.5W (VHF/300/
MHz Band/UHF)
0.9 – 1.5W (800/900)
High Power:
4.0 – 4.8W (UHF/300/
MHz Band)
2.4 – 3.0W (800/900)
High Power:
5.0 – 5.8W (VHF)
Voice
Modulation
Mode: PWR MON
4th channel test
frequency*
atten to -70, input to RF
In/Out
Monitor: DVM: AC Volts
Set 1kHz Mod Out level
for 0.025Vrms at test
set,
80mVrms at AC/DC
test set jack
As above As above, meter
selector to mic
Deviation:
≥ 4.0 kHz but ≤ 5.0
kHz (25 kHz Ch Sp).
Voice
Modulation
(internal)
Mode: PWR MON
4th channel test
frequency*
atten to -70, input to RF
In/Out
TEST MODE,
Test Channel 4
carrier squelch
output at
antenna
Remove
modulation input
Press PTT switch on
radio. Say “four”
loudly into the radio
mic. Measure
deviation:
≥ 4.0 kHz but ≤ 5.0
kHz (25 kHz Ch Sp)
TPL
Modulation
As above
4th channel test
frequency*
BW to narrow
TEST MODE,
Test Channel 4
TPL
As above Deviation:
≥500Hz but ≤1000Hz
(25 kHz Ch Sp).
RF Power DMR mode. Slot 1
Power and Slot 2
Power
TEST MODE,
Digital Mode,
transmit
without
modulation
Key up radio
without modulation
using Tuner
TTR Enable is
needed and IFR to be
set to trigger mode
with signal level
~1.5V

Motorola XPR 7550e Specifications

General

Channel Capacity	1000 channels
IP Rating	IP68
Power Output	VHF: 1-5W, UHF: 1-4W
Digital Protocol	DMR
Bluetooth	Yes
GPS	Yes
Frequency Range	VHF: 136-174 MHz
Display	Full color 5-line display
Dimensions	5.1 x 2.2 x 1.4 in (130 x 55 x 36 mm)