Power Meter
R&S
®
Spectrum Rider FPH
219
User Manual 1321.1011.02 ─ 11
To eliminate noise and the effects of noise on the measurement effectively, use the
R&S FSH-Z1 power sensor.
1. Select "MeasTime" softkey.
2. Select the measurement time most suitable for your test setup.
Taking additional loss or gain into account
At high powers that cause the power sensor maximum input level to be exceeded or at
very low levels that are below the R&S Spectrum Rider minimum sensitivity, the R&S
Spectrum Rider can take additional loss or gain between the DUT and the power sen-
sor into account. These differences are defined in terms of an offset in dB relative to
the measured level. A positive offset corresponds to a loss and a negative offset corre-
sponds to a gain.
The R&S Spectrum Rider shows the current offset in the diagram header.
1. Select "OFS" softkey.
The R&S Spectrum Rider opens an input field to define the reference offset.
2. Enter the offset you require.
The R&S Spectrum Rider takes the offset value into account in the power or level
display.
7.2
Using a Directional Power Sensor
For power measurements in both directions (forward and reverse), you can connect
directional power sensors to the R&S Spectrum Rider. The R&S Spectrum Rider sup-
ports the following directional power sensors:
●
R&S FSH-Z14
●
R&S FSH-Z44
With a directional power sensor, the R&S Spectrum Rider measures the power of a
signal from source to load (forward power) and from load to source (reverse power).
The ratio of forward and reverse power is a measure of the load matching. The R&S
Spectrum Rider displays the results as the return loss or the standing wave ratio.
1. Press [MODE] key.
2. Select "Power Meter" softkey
The R&S Spectrum Rider activates the mode for power measurements.
Using a Directional Power Sensor
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