Two-port measurements with the tracking generator
R&S FSH
1145.5973.12 4.92
E-11
.
R&S FSH with the VSWR Bridge R&S FSH-Z3
VSWR Bridge
and
Power Divider
R&S FSH-Z2
Test port
Control
cable
R&S FSH with the VSWR Bridge
R&S FSH-Z2
Scalar measurement of reflection
The test setup must be calibrated before any measurements are made. This is done with a short and an
open at the point were the reflection measurement is to be made. If a cable is to be inserted between
the DUT and the bridge, perform the calibration at the measurement end of the cable.
Press the REFLECT CAL softkey.
The R&S FSH prompts the user to connect an open to
the measurement input.
Connect an open to the measurement port of the
bridge.
By pressing the first or the second softkey
(CONTINUE), start the OPEN calibration. While
calibration is in progress, the R&S FSH outputs the
message "Calibrating OPEN, please wait... ".
Press the CANCEL softkey to abort calibration.
When OPEN calibration is over, the R&S FSH prompts the user to perform SHORT calibration.
Connect a short to the measurement input of the
bridge.
Using CONTINUE start the SHORT calibration.
Calibration can be aborted with CANCEL.
Note:
Instead of a SHORT, the R&S FSH can
be calibrated again with an OPEN. As the
R&S FSH only measures the magnitude
of the reflected voltage, it cannot
distinguish between a SHORT and an
OPEN. However, calibration with a
SHORT increases measurement accuracy
because the R&S FSH takes the average
of the calibration values for the SHORT
and the OPEN.
