R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Annexes
Error Messages, Troubleshooting
Operating Manual 1145.1084.12 – 30 1169
With option R&S ZVAB-B4, oven quartz: The oven temperature is
too low.
Wait until the oven has been
heated up
*) The following bits in the STATus:QUEStionable:INTegrity:HARDware register are set when the
error occurs.
Errors during the Measurement
The following errors are due to inadmissible hardware settings and states during the measurement
process. Some of the errors also cause an entry in the status reporting system.
Unstable level
control at port <i>
The analyzer detects an excessive source level at one of the ports.
The signal is turned off and the sweep halted.
Check signal path for the
wave a
i
, especially check
external components. Then
press Channel – Sweep –
Restart.
Problem concerning
external generator
Gen<i>
An external generator has been configured, however, it cannot be
controlled or provides error messages. If several generators cause
problems, the lowest number is indicated.
Check whether the generator
is properly connected and
switched on. Check the GPIB
address; exclude address
conflicts when using several
external generators or other
equipment.
Problem concerning
external power
meter Pmet<i>
An external power meter has been configured, however, it cannot be
controlled or provides error messages. If several power meters cause
problems, the lowest number is indicated.
Check whether the power
meter is properly connected
and switched on. Check the
GPIB address; exclude
address conflicts when using
several external power
meters or other equipment.
The sweep points for a time sweep are too close, the analyzer cannot
process the measurement data until the next sweep point starts.
Increase stop time, reduce
no. of points, increase IF
bandwidth. If possible reduce
number of partial
measurements, e.g. by
restricting the number of ports
measured.
Overload at DC
MEAS <range>
The input voltage at one of the DC input connectors on the rear panel
is too high.
Port <i> ALC target
power not reached
The desired ALC target power wasn't reached within the expected
time limit.
2)
Increase the allowed control
range and settling tolerance.
ALC output power
unstable during
measurement
The ALC target power significantly deviates from its target value
during measurement.
2)
Reduce noise and/or drift.
Invalid ALC
parameter settings
An invalid (unsupported) combination of Kr and Ki parameter values
was selected.
2)
Converter power
control mode not
compatible with true
differential or
defined coherence
mode
In converter mode
SOURce:POWer:CONVerter:TRANsfer:DESCription was set to
NONE for some converter port while either True Differential Mode or
Defined Coherence Mode was active.
Activate converter power
control (i.e. select a different
power control method) to
reenable True Differential
Mode or Defined Coherence
Mode
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