R&S FSH
Measurements on CW Signals
1145.5973.12 2.13
E-14
Connect the DUT to the measurement port of the
R&S FSH-Z2 or R&S FSH-Z3.
The R&S FSH displays the return loss of the DUT.
The reflection calibration remains valid until the R&S FSH’s center frequency or span is changed such
that the new span falls outside the calibrated frequency range. If calibration becomes invalid, the
R&S FSH displays Uncal in the upper right-hand corner of the screen.
If the reference is changed after calibration, a larger measurement uncertainty must be anticipated. The
R&S FSH retains the calibration data but places a red dot in front of the
•
FSH-Z2: Refl. display to
indicate a possible increase in measurement uncertainty.
When saving a data set for a scalar reflection measurement in a calibrated state, the R&S FSH can
store the calibration data along with the other settings (see section "Saving Calibration Data"). Thus,
after the setting is recalled, a measurement can be performed without prior calibration, provided that the
instrument's temperature does not deviate more than 5 °C from its temperature when the data set was
stored.
If the temperature deviation is greater, the R&S FSH outputs a (red) dot in front of
•
FSH-Z2: Refl. . A
precise measurement can then be made only after a calibration.
深圳市盛腾仪器仪表有限公司
Tel:0755-83589391
Fax:0755-83539691
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