Spectrum Analyzer Mode
R&S
®
Spectrum Rider FPH
197
User Manual 1321.1011.02 ─ 06.00
6.4
Using Transducer Factors
The frequency-dependent transducer factor of transducers and antennas can be
directly considered in the measurement result. A transducer factor consists of a
numeric value and a unit. The R&S Spectrum Rider corrects the level values of the
trace by the values of the transducer. At the same time, the unit of the transducer is
assigned to the level axis. When field-strength measurements are performed with the
aid of antennas, for instance, the electrical field strength is directly indicated in dB
µ
V/m
on the R&S Spectrum Rider. A transducer factor can also be used to correct a fre-
quency-dependent attenuation, e.g. of a cable between DUT and RF input of the R&S
Spectrum Rider.
Figure 6-14: Transducer factors displayed
You can create and edit transducer factor with the R&S InstrumentView software pack-
age and then transfer them into the internal memory of the R&S Spectrum Rider. Each
transducer factor may consist of up to 1000 reference values.
For more information on transducer factors, see
Chapter 4.8, "Managing Datasets"
on page 100.
Interpolation between the values is performed with the aid of a modified spline algo-
rithm. Even if only relatively few values such as maxima, minima and turning points are
available, this algorithm can easily simulate the correction factors of common transduc-
ers. Two transducers can be switched on at a time. The second transducer must be
assigned the unit dB. The R&S Spectrum Rider adds the two transducers to a total
transducer.
Units supported for transducer factors:
●
dB
●
dB
µ
V/m
●
dB
µ
A/m
●
W/m2
The unit dB does not change the unit set on the R&S Spectrum Rider. It can be used,
for instance, to compensate for frequency-dependent loss and gain at the input of the
R&S Spectrum Rider. The units dBμV/m and dBμA/m convert the output power of an
antenna into electric or magnetic field strength. The unit W/m2 is used to calculate and
display the power flux density.
Using Transducer Factors
