Measurements on CW Signals R&S FSH3
Calibrate the R&S FSH3 for the reflection measurement.
¾ Press the REFLECT CAL softkey.
The R&S FSH3 prompts the user to leave the
measurement port open.
¾ Leave the test port of the R&S FSH-Z2 open.
¾ By the CONTINUE softkey start the OPEN cali-
bration.
While calibration is in progress, the R&S FSH3 outputs
the message "Calibrating OPEN, please wait... ".
When OPEN calibration is over, the R&S FSH3 prompts the user to perform SHORT calibration.
¾ Connect a short to the test port of the R&S FSH-Z2.
¾ Using CONTINUE start the SHORT calibration.
While calibration is in progress, the R&S FSH3 outputs
the message "Calibrating SHORT, please wait... ".
When calibration is over, the R&S FSH3 outputs the
message "Reflect. calibrated" for 3 seconds.
Reflection is displayed in the top right-hand corner of
the measurement diagram to indicate that the
R&S FSH3 is calibrated for reflection measurements.
¾ Connect the DUT to the measurement port of the
VSWR bridge.
The R&S FSH3 displays the return loss of the DUT.
The transmission calibration remains valid until the R&S FSH3’s Center Frequency or span are
changed. If calibration becomes invalid, the R&S FSH3 displays Track Gen Uncal in the top right-hand
corner of the screen.
If the reference is changed after calibration, a larger measurement uncertainty must be anticipated. The
R&S FSH3 retains the calibration data, but places a red dot in front of the Reflection display to
indicates possible increase in measurement uncertainty.
1145.5973.12 2.12 E-6
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