Pulse source and TDR/TDT analysis (options R&S
RTO6-B7/K130)
R&S
®
RTO6
1048
User Manual 1801.6687.02 ─ 05
The calibration results are used for correction of subsequent measurements and can
be saved in a file for later usage.
Correction
Calibration results are used for correction of the signal in two ways:
●
DC scaling using results of open, short and match calibration.
●
RF correction and deembedding of transmission loss based on short calibration.
The R&S
RTO6 corrects for the transmission loss of the system, but not for multiple
reflections between DUT and oscilloscope.
16.2.2
Using TDR/TDT
16.2.2.1
Calibrating the setup
Before you can start TDR/TDT measurements, calibrate the used cables.
You can:
●
Calibrate the setup using the calibration wizard of the R&S
RTO6.
●
Load a file with results of a previous calibration of the same setup.
●
Use default calibration and correction values.
To calibrate the cables
The calibration procedure is described for single-ended TDR and TDT analysis. If you
need only TDR or only TDT, the procedure is the same but with fewer calibration steps
and fewer measurements.
1. Open [App Cockpit]> "Analysis" > "TDR / TDT"
2. To start a new calibration, select "Start wizard".
If a calibration was loaded or done before, the calibration steps are skipped, and
the measurement dialog box is shown.
3. Select the analysis type: "TDR", "TDT", or "TDR / TDT" (both TDR and TDT mea-
surements).
4. Select "Calibrate setup".
5. Connect the cables, and select the input channels:
a) Connect the first cable to the "Ref" connector of the pulse source and to a
channel input. This cable is for TDR measurements.
b) Select the connected channel in the dialog box.
c) Connect the second cable to the "Out" connector. Do not connect the DUT.
d) Connect a third cable to a channel input. This cable is for TDT measurements.
e) Select the connected channel in the dialog box.
f) Terminate all unused connectors of the pulse source.
TDR/TDT analysis (option R&S
RTO6-K130)
