Noise Figure Measurements Option (K30) R&S FSL
1300.2519.12 4.248 E-11
To edit tables
1. Select the table header using the rotary knob or arrow keys and press rotary knob or the ENTER
key to enter into the edit mode.
2. Focus the field you want to edit using the arrow keys or the rotary knob.
3. Enter the values (for details refer to the Quick Start Guide, chapter 4, "Basic Operations").
4. To insert a new row above the currently selected row, press the Insert softkey.
5. To delete the currently selected row, press the Delete softkey.
6. Only available for the Frequency Table:
To update the table according to the Frequency Settings, press the Build Tbl softkey.
7. Press the Exit softkey to leave the edit mode.
To work with limit lines
1. Press the LINES key.
The Limit Lines dialog box is displayed. It contains information on name, limit, status, and a
comment.
2. To activate limit lines, select the limit line you want to activate and press the Enable/Disable
softkey.
3. To define a new limit line, press the New softkey and enter the limit line characteristics.
4. To modify a limit line, select the limit line you want to edit and press the Edit softkey.
5. To save a limit line, press the Exit softkey.
If data are missing or if some data are invalid, an error message is displayed.
6. To delete a limit line, select the limit line you want to edit and press the Delete softkey.
Further information
This section provides background information on measurements and displayed information.
Measurement modes of the noise figure measurement
Noise measurements are performed on many different types of device under test (DUT). The type of
DUT to be measured determines the test setup and also how the frequency list is to be generated. To
support these different types of DUT, two different noise figure measurement types are available:
• Direct measurement
• Frequency–converting measurement
– Fixed LO, IF = RF + LO
– Fixed LO, IF = abs(RF – LO)
The setup for the different measurement types is described with the Schematic softkey. The
measurement mode is set in the Frequency Settings dialog box, Mode field.
Calibration
The calibration measures the noise introduced to a signal by the spectrum analyzer itself to
compensate it in measurements on a device under test. This compensation is called 2nd stage
correction, because the spectrum analyzer is the second stage of the test setup, the DUT being the first
stage.
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