R&S FSW Series, Руководство пользователя

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Common Measurement Settings
R&S
®
FSW
448 User Manual 1173.9411.02 ─ 43
The remote commands required to perform these tasks are described in Chap-
ter 14.7.1, "Defining the Frequency and Span" , on page 1024.
To configure the frequency and span
Frequency and span settings can be configured via the "Frequency" dialog box. Signal
tracking is configured in the "Signal Tracking" tab of this dialog box.
1. To display the "Frequency" dialog box, do one of the following:
● Select "Frequency" from the "Overview".
● Select the [FREQ] key and then the "Frequency Config" softkey.
● Select the [SPAN] key and then the "Frequency Config" softkey.
2. Define the frequency range using one of the following methods:
● Define the "Center Frequency" and "Span".
● Define the "Start Frequency" and "Stop Frequency".
● To perform a measurement in the time domain, define the "Center Frequency"
and select the "Zero Span" button.
● To perform a measurement over the entire available frequency range, select
the "Full Span" button.
● To return to the previously set frequency range, select the "Last Span" button.
8.3.5 How to Move the Center Frequency through the Frequency Range
In some cases it may be useful to move the center frequency through a larger fre-
quency range, for example from one harmonic to another.
1. In the "Frequency" dialog box, define the "Center Frequency Stepsize". This is the
size by which the center frequency is to be increased or decreased in each step.
Enter a manual or relative value, or set the step size to the current center fre-
quency or marker value. To move from one harmonic to the next, use the center
frequency or marker value.
2. Select the "Center Frequency" dialog field.
3. Use the arrow keys to move the center frequency in discrete steps through the
available frequency range.
8.4 Amplitude and Vertical Axis Configuration
In the Spectrum application, measurement results usually consist of the measured sig-
nal levels (amplitudes) displayed on the vertical (y-)axis for the determined frequency
spectrum or for the measurement time (horizontal, x-axis). The settings for the vertical
axis, regarding amplitude and scaling, are described here.
Amplitude and Vertical Axis Configuration