R&S 4200 Series Operating Manual page 176

R&S XU 4200
Code Message
0317 PA TEMP WARNING
0318 PA TEMP ERROR
0319 TX TEMP WARNING
0320 TX TEMP ERROR
0321 PA NO OUTPUT
PWR
0322 PA POWER LOW
–1 DB
6166.5368.02.01
Level Config
W – Temperature on the PA
module is over the
warning limit (80 °C).
Output power is
reduced step by step.
This behavior is normal
with continuous
operation and +55 °C
ambient temperature.
E – Temperature on the PA
module is over the error
limits (95 °C).
Transmitter is switched
W – Temperature on the TX
board is over the
warning limit (70 °C).
Output power is
reduced step by step.
This behavior is normal
with continuous
operation and +55°C
ambient temperature.
E – Temperature on the TX
board is over the error
limit (85 °C).
E – Output power is less
than 500 mW.
W – Output power
decreases by 1 dB.
4.10
Troubleshooting
Note
Check airflow of fans and
ambient temperature
(see chapter 5.2).
Clear the ventilation
Check the antenna, and
measure VSWR (see
chapter 3.4.7.4.1). A high
VSWR may cause a
heavy power loss in the
transmitter.
Send the radio to service.
off.
Check airflow of fans and
ambient temperature
(see chapter 5.2).
Clear the ventilation
Send the radio to service.
Send the radio to service.
Check temperature (see
chapter 3.4.7.4.4)
Check VSWR (see
chapter 3.4.7.4.1)
Check DC voltage (see
chapter 3.4.7.4.3).
See CBIT messages
0325 to 0328.
If this fails to eliminate
the fault, send radio to
Action
opening.
opening.
service.