General Instrument Setup
R&S
®
ESW
317
User Manual 1177.6298.02 ─ 08
Transducer factors
A transducer factor takes the frequency response of a single transfer element into
account. It consists of a series of reference values. Each reference value in turn con-
sists of a frequency and the corresponding level (correction) value. The transducer fac-
tor can consist of up to 1001 reference values. Measurement points between the refer-
ence values are interpolated either linearly or logarithmically.
Note that the unit of the transducer overrides the unit you have selected for the mea-
surement, because the R&S
ESW is seen as the same device as the transducer itself.
Measurement results are automatically converted into the unit of the transducer factor.
Inputs are only possible in the unit of the transducer. If you want to have access to
other units as well, the correction values must be defined in dB. When you turn off the
transducer, the R&S
ESW again uses the unit that was selected before.
Transducer factors are always applied to all active measurement windows.
Transducer sets
A transducer set consists of several transducer factors and thus takes the frequency
response of several transducers into account. Using transducer sets is recommended
if you are using different transducers in the measurement range or if cable attenuation
or an amplifier have to be considered.
If you are using a transducer set, you can divide the complete frequency range defined
for the transducer set into 10 smaller frequency ranges. Make sure, however, that the
ranges have no gaps in between each other. The stop frequency of one range must
always be the start frequency of the next one.
You can assign up to eight transducer factors to each subrange. Make sure that the
frequency range of a particular (sub)range is covered completely by the frequency
range defined for the transducer factor. In addition, the unit of all transducer factors
that are part of a set has to be the same (or, alternatively, "dB"). Transducer factors
that do not meet this condition will not be available for selection.
If necessary, you can configure the R&S
ESW to interrupt the scan when it reaches a
range boundary. This interruption is called transducer break. While the scan is interrup-
ted, exchange the transducer and continue the scan with the transducer factor
assigned to the new range or turn off transducer use and continue the measurement
without a transducer factor.
If the scan reaches a frequency not covered by the currently active transducer factor,
the R&S
ESW shows a message in status bar ("No valid transducer for current receiver
frequency").
Transducer management
The R&S
ESW provides functionality to store and use the transducer factors during a
measurement.
Transducers
