The Spectrum Application
FPC1000
84
User Manual 1178.4130.02 ─ 02
assigned the unit dB. The R&S
FPC1000 adds the two transducers to a total trans-
ducer.
Units supported for transducer factors:
●
dB
●
dBμV/m
●
dBμA/m
●
W/m2
The unit dB does not change the unit set on the R&S
FPC1000. It can be used, for
example, to compensate for frequency-dependent loss and gain at the input of the
R&S
FPC1000. 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.
For example, to compensate for the cable loss between the transducer and the RF
input, the R&S
FPC1000 can use two transducers at the same time. One of them must
have the unit dB, however, i.e. it must correspond to one loss or gain value.
Selecting transducer factors
1. Press the "Ampt" key to open the amplitude menu.
2. Select the "Transducer" menu item to open the transducer menu.
Note:
You can select two transducer factors, a primary transducer and a secon-
dary transducer.
3. Select the "Select Primary" menu item.
The R&S
FPC1000 opens a submenu where you can select the transducer factor
you need.
4. Select the transducer factor you need and confirm the selection with the "Load"
menu item.
The R&S
FPC1000 applies the correction values to the measurement results.
An example would be the transducer factor of the R&S
HL223 antenna that is defined
between 200
MHz and 1300
MHz. The R&S
FPC1000 therefore displays the noise in
this frequency range as a function of frequency incremented by the transducer factor.
Outside the transducer range, the R&S
FPC1000 sets the transducer factor at zero, i.e.
measurements in this range do not yield conclusive results.
You can select a second transducer factor with the "Select Secondary" menu item. The
secondary transducer factor in that case is added to the first. The unit of the second
transducer factor must always be the relative unit dB as otherwise an addition would
not be useful. When you select a secondary transducer factor, the dialog box shows
only those transducer factors that have dB as their unit.
Setting the unit for measurements with transducers
If the unit of the transducer is dB, the units dBm, dBmV or dBμV remain unchanged.
The linear units volt and watt are not allowed. They are deactivated in the units menu.
Amplitude Configuration
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