General Instrument Setup
R&S
®
FSW
567
User Manual 1173.9411.02 ─ 19
active the reference level function is adapted automatically to obtain the best dynamic
performance.
If a transducer factor is active, "TDF" is displayed in the channel bar.
Transducers can also be defined when an optional external mixer is used (R&S
FSW-
B21).
When using probes for RF input, transducers are automatically created according to
the probe's detected characteristics as soon as the probe is connected (see
ter 6.2.1.2, "RF Input from the Analog Baseband Connector"
Y-Axis Unit
The individual transducer factors can be defined as absolute values or relative (dB)
values. However, all factors for one transducer line use the same unit. As soon as a
transducer is activated, the unit of the transducer is automatically used for all the level
settings and outputs. The unit cannot be changed in the amplitude settings since the
R&S
FSW and the active transducer are regarded as one measuring instrument. Only
for relative transducer factors (unit dB), the unit originally set on the instrument is main-
tained and can be changed.
When all transducers have been switched off, the R&S
FSW returns to the unit that
was used before a transducer was activated.
Configuration
The R&S
FSW supports transducer lines with a maximum of 1001 data points. Eight of
the transducer lines stored in the instrument can be activated simultaneously. The
number of transducer lines stored in the instrument is only limited by the capacity of
the storage device used.
A transducer line consists of the following data:
●
A maximum of 1001 data points with a position and value
●
A unit for the values
●
A name to distinguish the transducer lines
Validity
The transducer factors must comply with the following rules to ensure correct opera-
tion:
●
The frequencies for the data points must always be defined in ascending order.
Otherwise the entry will not be accepted and the an error message is displayed.
●
The frequencies of the data points may exceed the valid frequency range of the
R&S
FSW since only the set frequency range is taken into account for measure-
ments. The minimum frequency of a data point is 0 Hz, the maximum frequency
200 GHz.
●
The value range for the transducer factor is ±200 dB.
●
Gain has to be entered as a negative value, and attenuation as a positive value.
Basics on Transducer Factors
