Connecting the sensor
R&S NRP-Z28/-Z98
1170.8966.12
1.14
E-6
4. Double-clicking
USB Root Hub
opens the
USB Root Hub Properties
dialog box. Select the Power
Management tab. Remove the check mark next to
Allow the computer to turn off this device to
save power
and confirm this with
OK
.
Fig. 1-12
Deactivation of
Selective Suspend
for a USB root hub
Connecting the sensor to the source and the DUT
Connect the RF connector of the connecting cable to the output of a signal source, and connect the RF
connector of the power meter to the input of the DUT. By slightly lifting the power sensor, you can screw
it on more easily without tilting it.
Performing measurements
The R&S NRP-Z28/-Z98 power sensors behave in a similar manner as the R&S NRP-Z21 and
R&S NRP-Z91 multipath diode sensors. Unlike these, however, instead of the power fed to the sensor,
the power
P
supplied to the DUT is measured. By means of the
S-parameter correction
function,
adapters or attenuators connected ahead of the DUT can be taken into consideration. The
gamma
correction
function allows the influence of a mismatched DUT to be reduced.
