Measuring forward and reflected power R&S FSH
1309.6275.12 4.78 E-2
In the event of incorrect operation or sensor malfunction, the R&S FSH outputs the following error
m
essages:
Message Cause Remedy
Error in zeroing: signal at
sensor
A signal was present at the
power sensor when zeroing was
performed.
Unscrew the power sensor from
the device under test and repeat
zeroing.
Warning: input overloaded The power at the input of the
power sensor exceeds the
permissible power.
Reduce the power at the sensor
input.
Hardware error Communication error between
the R&S FSH and the power
sensor.
Unscrew the sensor from the
R&S FSH and check the
connectors. If the problem
persists, contact a Rohde &
Schwarz service center.
Power sensor error The power sensor signals an
error to the R&S FSH.
Contact a Rohde & Schwarz
service center.
Screen layout for measurements with Directional Power Sensors R&S FSH-Z14/-Z44:
Display of the
power sensor type
Readout of matching
value (VSWR or return
loss)
Analog indication of
matching (VSWR or
return loss)
Transmission
standard
Reference display
for relative power
measurement
Measurement
frequency
Analog indication
of forward power
Power offset
Readout of forward
power (dBm, W or
dB, relative)
The power sensors contain frequency-dependent correction values. This means that the highest
accuracy is reached for signals whose frequency is known. When the R&S FSH switches to the power
measurement mode from another operating mode, it transfers its current center frequency to the power
sensor.
If a signal at another frequency is to be measured, the new center frequency can be transferred to the
power sensor by entering the frequency (FREQ softkey).
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