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R&S FSH
Setting the Frequency
1145.5973.12 4.3
E-14
Positive frequency offset is possible in the 10 Hz to 100 GHz range, in 10 Hz steps. The size of the
negative frequency offset permitted depends on the start frequency setting; the start frequency, taking
into account the frequency offset, is always 0 Hz.
Press the FREQ key.
Press the FREQ OFFSET softkey.
The R&S FSH opens the frequency offset entry field.
Enter the required frequency offset and terminate
with the corresponding unit.
The R&S FSH adds the frequency offset to the set
center frequency. The center frequency display is
marked by a red dot to indicate that a frequency offset
has been set.
The frequency offset can be reversed if an offset of
0 Hz is entered.
Entering the center-frequency step size
Press the CF STEPSIZE key.
A submenu above the softkey label opens. The box contains various step size setting options.
With 0.1 x SPAN (default setting), the step size is
equal to 10 % of the span (= 1 division on the vertical
scale).
With = CENTER, the step size is equal to center
frequency. This setting is ideal for measurements on
harmonics. On each frequency increment, the center
frequency moves to the next harmonic.
With MANUAL... you can select any step size. This
makes it easy to investigate spectra with frequencies
at constant intervals.
Make the selection you want with the rotary knob
or the cursor keys and terminate with the ENTER
key.
If you select "0.1 x SPAN" or "= CENTER", the R&S FSH makes the setting directly itself. If you select
"MANUAL...", the value entry box opens and indicates the current step size.
Using the rotary knob, the cursor keys or numeric entry, change the step size.
When you have entered the step size you want, confirm by pressing the ENTER key or by pressing
the CF STEPSIZE softkey.
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