Rohde & Schwarz XT 4410A - Page 213

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Operator’s Manual • Malfunction
6076.0822.12.01 – 4.15 –
0360 TX IN DRIVE MISSING E Transmitter error:
Input drive signal below
limit or missing
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0361 TX POW CTL LOOP LIM E Transmitter error:
Power control loop out of
limits
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0362 TX POW REDUCED W Transmitter warning:
Output power reduced
Check airflow of fans, ambient tem-
perature, antenna cabling and DC
power supply. If this fails to eliminate
the fault, send radio to depot.
0363 TX TEMP SENS SH E Transmitter error:
Temperature sensor is
shorted / defective
Inform depot.
0400 GRX WATCHDOG E Guard receiver error:
Reset of µP caused by
watchdog circuit
Send radio to depot.
0401 GRX EXT REF NOT PRE E Guard receiver error:
External 100-kHz reference
is not present
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0402 GRX VCO1 NOT LOCKED E Guard receiver error:
Loop of VCO1 (Voltage-
Controlled Oscillator) not
locked
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0403 GRX VCO2 NOT LOCKED E Guard receiver error:
Loop of VCO2 (Voltage-
Controlled Oscillator) not
locked
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0404 GRX IN SIG OVERLOAD W Guard receiver warning:
Input signal overload
CBIT message or frequent event:
Receive signal too large. Switch off
and check RF cables. If this fails to
eliminate the fault, send radio to
depot.
Single event:
Receive signal too large. Switch off
and check RF cables.
0500 AFI WATCHDOG E Audio frequency interface
error:
Reset of µP caused by
watchdog circuit
Send radio to depot.
0501 AFI BUFFER OVERFLOW W Audio frequency interface
warning:
Sample buffer overflow
Inform depot.
0502 AFI CMD ERR E Audio frequency interface
error:
Received command is not
correct
Inform depot.
0503 AFI CODEC E Audio frequency interface
error:
Error in CODEC
CBIT message or frequent event:
Send radio to depot.
Single event:
no action
0504 AFI R/W ERR E Audio frequency interface
error:
Error during read/write
access
Inform depot.
Code Message Level Notes Action
(CBIT message,
frequent or single event)