Cable and Antenna Test Mode
R&S
®
Cable Rider ZPH
152
User Manual 1321.0950.02 ─ 07
7.2.3.4
Setting the Reference Position
The reference position defines the position of the reference line in the diagram. The
reference position is a linear value between "0" and "10". Each value represents one
horizontal grid line of the diagram. The "0" value corresponds to the top grid line and
the "10" corresponds to the bottom grid line.
When you change the reference position, the R&S Cable Rider ZPH also shifts the
position of the trace by the magnitude of the reference position change. It has no effect
on the reference value itself.
1. For model .02, press [SCALE] key.
For model .12, press [SCALE/AMPT] key.
2. Select the "Range" softkey.
The R&S Cable Rider ZPH opens a submenu to select the range setting.
3. Select the "Ref Position" menu item.
The R&S Cable Rider ZPH opens an input field to specify the reference position.
4. Enter the reference position you require.
The R&S Cable Rider ZPH moves the trace accordingly.
7.2.3.5
Setting the Attenuation
Attenuation setting is only available for model .12 in Tranmission (S21) measurement.
The R&S Cable Rider ZPH provides functions to attenuate the signal at the RF input.
1. Press the [SCALE/AMPT] key.
2. Select the "Receiver Att" softkey.
The R&S Cable Rider ZPH opens an input filed to specify the attenuation level.
3. Enter the attenuation of the signal at the RF input.
You can set an RF attenuation in the range from 0 dB to 30 dB in 5 dB steps.
7.2.4
Configuring the Tracking Generator
Tracking generator is only available for model .12.
Configuring Cable and Antenna Tests
