Two-port measurements with the tracking generator
R&S FSH
1145.5973.12 4.104
E-14
When calibration is over, the R&S FSH outputs the
message "Reflect. calibrated" for three seconds.
FSH-Z2: Magnitude refl. is displayed in the upper
right-hand corner of the diagram as a function of the
VSWR bridge used.
This indicates that the R&S FSH is vector-calibrated
for reflection measurements. The softkey label
REFLECT CAL is also highlighted in green.
The reflection calibration remains valid until the center frequency or the span is changed on the
R&S FSH to such an extent that the new span falls outside the calibrated frequency range. Uncal is
displayed in the upper right-hand corner of the screen when calibration is no longer valid.
If the reference level is changed (AMPT key, REF softkey) after calibration, greater measurement
uncertainty must be anticipated. The R&S FSH retains the calibration data but displays a red dot before
the
•
FSH-Z2: Magnitude refl. display in the upper right-hand corner of the screen to indicate a
possible increase in measurement uncertainty.
A change in sweep time does not affect reflection measurement.
The R&S FSH internally monitors the temperature. If temperature changes cause an increase in
measurement error, the R&S FSH shows a red dot to the left of the measurement mode display
•
FSH-Z2: Magnitude refl. .
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