Measurements on CW Signals R&S FSH3
The R&S FSH3 displays now Transmission in the top
right-hand corner of the measurement diagram. This
tells the user that the R&S FSH3 has been calibrated
for transfer function measurements.
¾ Connect the DUT between the RF input and the
generator's output.
The R&S FSH3 displays the magnitude of the transfer
function. Values can be read out with, for example, the
markers.
The transmission calibration remains valid until the Center Frequency or the span is changed on the
R&S FSH3. Track Gen Uncal is displayed in the top right-hand corner of the screen when calibration
is no longer valid.
If the reference is changed after calibration, greater measurement uncertainty must be anticipated (up
to 1 dB). The R&S FSH3 retains the calibration data but displays a red dot in front of Transmission .
When saving a data set for a scalar transmission measurement in a calibrated state, the R&S FSH3 can
store the calibration data along with the other settings (see section "Saving Calibration Data"). Thus
after recalling the setting, a measurement can be performed without prior calibration, providing 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 FSH3 outputs a (red) dot in front of • Transmission . A
precise measurement can then only be made after a calibration.
1145.5973.12 2.10 E-6
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