R&S ZVH
Power Meter (R&S ZVH-K9)
Using a Power Sensor
Operating Manual 1309.6946.12 - 09
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Selecting the unit for the power readout
The R&S ZVH can display measured power in relative units (dBm) or in absolute units
(W, mW, µW, nW and pW). It is also possible to set a reference level in dB.
► Press the "Unit" softkey.
A submenu to select the unit opens.
► Select the unit you want.
The R&S ZVH adjusts the result display accordingly.
Setting the reference level
If you have selected the unit dB Rel, the R&S ZVH opens an input field to set the
reference level. The R&S ZVH shows the currently set reference level in the diagram
header.
► Enter the reference level you want.
Alternatively, you can set the current level readout as the reference level.
► Press the "
Ref" softkey.
The R&S ZVH sets the current result as the reference level.
It then displays the measured level relative to the reference level in dB. The unit is
automatically set to dB Rel...
Setting the averaging time
The averaging time determines the length of the measurement. The longer the
averaging time, the more stable the display, particularly if signals have low power or
are noisy.
The averaging time is either "Short", "Normal" or "Long".
● A short measurement time provides stable and accurate results for stationary sine
signals with high levels (> -40 dBm). It is also appropriate for measurements that
require a high repition rate.
● A normal measurement time increases the stability of results for signals with low
levels or modulated signals.
● A long measurement time is appropriate for signals with very low power levels
(< -50 dBm)
To eliminate noise and the effects of noise on the measurement effectively, use the
R&S FSH-Z1 power sensor.
► Press the "Meas Time" softkey.
► Select the measurement time most suitable for your test setup.
