Power Meter
R&S
®
ZNH
176
User Manual 1334.5985.02 ─ 02
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
ZNH minimum sensitivity, the R&S
ZNH can
take additional loss or gain between the DUT and the power sensor 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 corresponds to a gain.
The R&S
ZNH shows the current offset in the diagram header.
1. Select "OFS" softkey.
The R&S
ZNH opens an input field to define the reference offset.
2. Enter the offset you require.
The R&S
ZNH takes the offset value into account in the power or level display.
Activating signal source
The R&S
ZNH provides the setting to enable or disable the built-in signal source in the
power meter mode.
Once the signal source is enabled, you can output a signal source of -10 dBm at the
designated frequency from the RF output connector.
●
Select "Signal Gen" softkey.
The R&S
ZNH output a signal source of -10 dBm at the RF output connector.
10.2
Using a Directional Power Sensor
For power measurements in both directions (forward and reverse), you can connect
directional power sensors to the R&S
ZNH. The R&S
ZNH supports the following direc-
tional power sensors:
●
R&S FSH-Z14
●
R&S FSH-Z44
With a directional power sensor, the R&S
ZNH 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
ZNH displays
the results as the return loss or the standing wave ratio.
1. Press [MODE] key.
2. Select "Power Meter" softkey
The R&S
ZNH activates the mode for power measurements.
Using a Directional Power Sensor