Power Meter
R&S
®
Cable Rider ZPH
142
User Manual 1321.0950.02 ─ 03
8.2.2 Performing and Configuring Measurements
After you have connected a power sensor, the R&S Cable Rider ZPH immediately
starts to measure the signal power.
When measuring high powers, pay strict attention to the following instructions to avoid
personal injury and to prevent the power sensor from being destroyed
Risk of skin burns and / or damage to the R&S Cable Rider ZPH
Measuring high powers may lead to skin burns and / or damage to the R&S Cable
Rider ZPH. You can avoid it by:
●
Never exceeding the permissible continuous power. The permissible continuous
power is indicated on a diagram on the back of the power sensor.
●
Turning off the RF power when connecting the power sensor.
●
Connecting the RF connectors tightly.
Defining the center frequency
To get the most accurate results, you should synchronize the frequency to that of the
signal.
Note that the R&S Cable Rider ZPH maintains the center frequency that you have set
in another operating mode. In that case, it uses that frequency as the power sensor fre-
quency.
If you want to perform measurements on another known signal, you can change the
power sensor frequency manually.
1. Select the "Freq" softkey.
The R&S Cable Rider ZPH opens an input field to define the frequency opens.
2. Enter the frequency of the signal.
The R&S Cable Rider ZPH transfers the new frequency to the power sensor which
then corrects the measured power readings.
Zeroing the power sensor
For more information, see
Setting the power measurement weighting mode
For forward power display, the R&S Cable Rider ZPH provides both average power
and peak envelope power.
1. Press the MEAS key.
2. Select the "Fwrd Pwr Display" softkey.
3. Select the weighting mode you require.
Using a Directional Power Sensor
