Setting and Using the Measurement Functions R&S FSH3
Reflection measurements
The VSWR Bridge R&S FSH-Z2 should be used for reflection measurements. However, an equivalent
bridge (e.g. the ZRB2 from Rohde & Schwarz) can be used. The R&S FSH-Z2 bridge is directly
screwed to the RF input connector and the generator’s output.
¾ Connect the control cable of the R&S FSH-Z2 with the socket Power Sensor of the R&S FSH3.
¾ Connect the RF and Generator port of the R&S FSH-Z2 to the RF input and generator output of the
R&S FSH3.
Test port
Control
cable
VSWR Bridge and
Power Divider
R&S FSH-Z2
The R&S FSH3 can measure both a DUT’s return loss and its VSWR.
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.
¾ Press the REFLECT CAL softkey.
The R&S FSH3 prompts the user to connect an open
to the measurement input.
¾ Connect an open to the measurement port of the
bridge.
¾ By pressing the first or the second softkey
(CONTINUE), start the OPEN calibration. While
calibration is in progress, the R&S FSH3 outputs
the message "Calibrating OPEN, please wait... ".
¾ Press the CANCEL softkey to abort calibration.
1145.5973.12 4.60 E-6
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