R&S ZNB Series User Manual page 835

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R&S ZNB/ZNBT
Bit No.
7
8
9
10
11
12
13
14
15
User Manual 1173.9163.02 ─ 62
Meaning
Instrument temperature is too high
This bit is set if the analyzer detects that the instrument temperature is too high.
Reduce ambient temperature, keep ventilation holes of the casing unobstructed.
OCXO cold
This bit is set if the oven for the internal high precision clock (option B4) is not at its operat-
ing temperature.
Wait until the oven has been heated up.
Unstable level control
This bit is set if 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 received wave, especially check external components. Then
restart the sweep (INITiate<Ch>[:IMMediate]).
Problem concerning external generator
This bit is set if an external generator has been configured but cannot be controlled or pro-
vides error messages.
Check whether the generator is properly connected and switched on. Check the GPIB
address; exclude address conflicts when using several external generators or other equip-
ment.
Problem concerning external power meter
This bit is set if an external power meter has been configured but cannot be controlled or
provides error messages.
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.
Time grid too close
This bit is set if the sweep points for a time sweep are too close, so that the analyzer can-
not 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
This bit is set if the input voltage at one of the DC input connectors on the rear panel is too
high.
Reduce the input voltage.
Power settings exceed hardware limits
This bit is set if the source power at one of the test ports is too high or too low.
Reduce or increase the source power.
Detector MEAS time has been internally limited
This bit is set if the selected measurement time for a detector (observation time) is too
long.
If desired, reduce the measurement time or select a smaller IF bandwidth.
Remote control
Status reporting system
835