R&S FSL Tracking Generator (Models 13, 16 and 28)
1300.2519.12 4.135 E-11
To calibrate for transmission and reflection measurement
Prerequisite: The instrument is in tracking generator measurement mode (for details refer to
"Measurement Mode Selection – MODE Key" on page 4.129).
1. Press the Source Power softkey to enter the generator output level.
If the tracking generator is off, it is switched on.
2. To enter a constant level offset for the tracking generator, press the Power Offset softkey.
3. Press the Source Cal softkey to open the submenu for calibration.
4. To record a reference trace for transmission measurement, press the Cal Trans softkey.
The recording of the reference trace and the completion of the calibration sweep are indicated
by message boxes.
5. To record a reference trace for reflection measurement, press the Cal Refl Short or Cal Refl Open
softkey.
The recording of the reference trace and the completion of the calibration sweep are indicated
by message boxes.
6. Press the Normalize softkey to switch on the normalization.
7. Press the Ref Value Position softkey to display the reference line.
8. Press the Ref Value softkey to enter a value to shift the reference line.
9. Press the Recall softkey to restore the settings used for source calibration.
Transmission measurement
This measurement will yield the transmission characteristics of a two–port network. The built–in tracking
generator serves as a signal source. It is connected to the input connector of the DUT. The input of the
R&S FSL is fed from the output of the DUT. A calibration can be carried out to compensate for the
effects of the test setup (e.g. frequency response of connecting cables).
DUT
GEN OUTPUT
RF INPUT
Fig. 4-8: Test setup for transmission measurement
Reflection measurement
Scalar reflection measurements can be carried out by means of a reflection–coefficient measurement
bridge.
DUT
GEN OUTPUT
RF INPUT
Bridge
Fig. 4-9: Test setup for reflection measurement
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