R&S FSL Noise Figure Measurements Option (K30)
1300.2519.12 4.253 E-11
Freq Settings
Opens the Frequency Settings dialog box. Alternatively, this dialog box is opened by pressing
the FREQ key (with focus on the Start Freq field).
The Frequency Settings dialog box contains the following elements:
Frequency Settings Start Freq
Stop Freq
Step Freq
Mode
Fixed LO
Image Rej
Frequency Table
Under Frequency Settings, the frequency settings and the measurement mode are set.
Under Frequency Table, the individual measurement steps are listed that will be performed
exactly in the order of the table. They are generated from the start frequency, the stop
frequency, and the step size on basis of the selected mode. If the start frequency is smaller than
the stop frequency, the RF values are generated into a list of ascending frequencies. If the start
frequency is larger, the list is descending. Not more than 100 measurement steps are possible.
If the gap between start and stop frequency is too large, increase the step frequency.
Depending on the measurement type, the Frequency Table contains the following columns:
Measurement type Column Description
Direct measurement
Frequency–converting measurement
RF
receive frequency, generated from the Start Freq, the Stop
Freq, and the Step Freq field entries
Frequency–converting measurement LO
constant LO frequency, defined via the Fixed LO field
IF
IF frequency, calculated according to the Mode field
Image image frequency, shows whether image frequency filters are
required and for which frequency range the image rejection
of the DUT is needed (Image Rej field)
It is possible to customize the Frequency Table by editing, deleting, and inserting measurement
steps. This might be useful in order to insert extra measurement steps near to a specific
frequency of interest in order to get more detailed results. If the start, stop, or step frequency is
changed, the Frequency Table is generated afresh and all manual modifications are
overwritten. To customize this table, proceed according to "To edit tables" on page 4.248.
Remote: FREQ:LIST:DATA 550MHz,300MHz,900MHz (Frequency Table)
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