Basic Operation
R&S
®
Cable Rider ZPH
85
User Manual 1321.0950.02 ─ 07
If no power sensor has been connected or is not connected appropriately, the R&S
Cable Rider ZPH shows nothing.
If there are communication problems between the R&S Cable Rider ZPH and the
power sensor, the R&S Cable Rider ZPH displays an error message that indicates a
possible cause.
For more information on the error messages, see
Table 9-1
.
Zeroing the power sensor
To compensate internal offsets of the power meter, a
Zeroing the power sensor
for the
power sensor is required before starting the measurement.
1. Select the "Zero" softkey.
Do not to apply any signals to the power sensor while zeroing is active.
A popup message box is displayed to provide instructions during the zeroing of the
power sensor.
2. Disconnect the power sensor from any signal sources.
3. Select the "Continue" softkey to start zeroing.
The R&S Cable Rider ZPH starts the zeroing process.
4. Wait for the zeroing process to finish.
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.
5. Connect the DUT to the power sensor.
The R&S Cable Rider ZPH shows the measured power level in dBm. For more
information, see
Chapter 9.1, "Using a Power Sensor"
,
on page 253.
Set the frequency
To get the best results, enter the frequency of the signal under test.
1. Select the "Freq" softkey.
The R&S Cable Rider ZPH opens an entry box to enter the frequency.
Using a Power Sensor
