R&S SU 4200 Troubleshooting
6125.0226.12.01 4.10
Code Message Level Config Note Action
0329 TX I/Q
OVERLOAD
W – I/Q overload in digital
IQ control loop; power
is reduced step by step
to avoid overload.
Note: Digital control
ensures optimal I/Q
modulation and good
harmonic distortion
under all operating
conditions.
Measure VSWR (see
chapter
3.4.7.4.1).
Check DC voltage (see
chapter
3.4.7.4.2).
If the VSWR is above
1.5 and at the same time
the DC supply is less
than 28 V, than the radio
is operating correctly
and the CBIT warning is
ok.
Otherwise send radio to
service.
0330 TX I/Q LOOP
UNLOCK
E – Digital loop not
running.
Send radio to service.
Note: The radio stops
the transmission.
0331 PA VSWR
ABOVE 2
W N VSWR is above 2. Switch off and check
antenna cabling. Switch
on and test PTT function
(see chapter
3.4.7.4.1)
If this fails to eliminate
the fault, send radio to
service.
0332 TX WD RESTART W – Indication of restart
after watchdog timer
expires.
This may be a software
error. Please report it to
service. Restart and
observe.
If this fails to eliminate
the fault, send radio to
service.
0333 TX DSP ERROR E – Error in DSP. Send radio to service.
0335 TX USB CONNECT W W If this warning was
configured via the
service PC (see
chapter
3.3), you will
get a warning
message when the
USB is connected.
0336 TX LOCAL MODE W W Radio was switched to
local mode. The CBIT
message disappears
when you switch back
to non-controlled mode
or remote mode.
Entering and leaving
the local mode
including time stamp
will be stored in the
event log.
The user has to
configure whether the
local mode is to
generate the CBIT
warning or not.
Please check
configuration via service
PC (see chapter
3.3).
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