Basic Operation
R&S
®
Cable Rider ZPH
87
User Manual 1321.0950.02 ─ 07
1 = Directional power sensor R&S FSH-Z14 or Z44
2 = Source
3 = Load
4 = USB binder adaptor (R&S FSH-Z144)
5 = USB port connector
Measuring the power
1. Press the [MODE] key.
2. Select the "Power Meter" softkey.
As soon as the R&S Cable Rider ZPH recognizes the power sensor, it displays the
type of the directional power sensor that is connected in the
Title bar
. After a few sec-
onds, it also shows the forward power and return loss currently measured at the load.
Zeroing the power sensor
Before performing the power measurement, you should zeroing the power sensor.
After zeroing is done, the R&S Cable Rider ZPH displays the message "Power sensor
zero done" and again shows the power sensor softkey menu.
► Connect the R&S FSH-Z14 or R&S FSH-Z44 between the source and the load.
The R&S Cable Rider ZPH displays the measured forward power in dBm and the
SWR of the load. See
Figure 9-2
.
To get the best results, you should also define the frequency of the signal. For more
information, see
Chapter 9.2, "Using a Directional Power Sensor"
,
on page 258.
Using a Power Sensor
