Cable and Antenna Test Mode
R&S
®
Cable Rider ZPH
122
User Manual 1321.0950.02 ─ 03
1. Press the SCALE key.
2. Select the "Range" softkey.
The R&S Cable Rider ZPH opens a submenu to select the range setting.
3. Select one of the menu items to select the display range that you require.
7.2.3.3
Adjusting the vertical axis automatically
The R&S Cable Rider ZPH provides an automatic scaling algorithm to optimize the
results display. The R&S Cable Rider ZPH does this by determining the minimum and
maximum trace values and adjust the vertical axis according to these values.
1. Press the SCALE key.
2. Select the "Auto Scale" softkey.
The R&S Cable Rider ZPH performs the automatic adjustment of the vertical axis.
You can also do a reset on the vertical axis by performing a "Full Scale (50 dB)"
setting.
3. Select the "Full Scale (50 dB)" softkey.
The R&S Cable Rider ZPH performs the reset scaling of the vertical axis to display
a scale from 0 dB to -50 dB.
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. Press the SCALE 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.
7.2.4 Setting the Measurement Sweep
The SWEEP key provides menu to control the response on how the measurement
results are presented.
Configuring Cable and Antenna Tests
