Basic Operation
R&S
®
Cable Rider ZPH
58
User Manual 1321.0950.02 ─ 03
4. Proceed with the "Continue" softkey to start the calibration.
After finishing the calibration routine, the R&S Cable Rider ZPH displayed the mes-
sage "Calibration done".
The R&S Cable Rider ZPH is now calibrated and a "(cal)" status is displayed next
to the measurement format, i.e.
. See
5. Connect the cable under test back to the measurement cable.
The R&S Cable Rider ZPH shows the cable characteristics over the cable's entire
length. With a marker, you can easily detect the distance to the cable fault.
In addition to the distance to fault measurement, the R&S Cable Rider ZPH also
features a reflection measurement, for example to test impedance matching.
Using markers
The R&S Cable Rider ZPH uses markers to read out signal levels and frequencies.
Markers are always positioned on the trace. Both the level and frequency at their cur-
rent positions are displayed on the screen.
► Press the MARKER key.
The R&S Cable Rider ZPH activates a marker and puts it on the maximum value
on the trace.
A red vertical line represents the position of the marker on the horizontal axis (e.g.
the frequency).
A small red horizontal dash represents the marker position on the vertical axis (e.g.
the level).
The R&S Cable Rider ZPH shows the marker position and measurement in the
Measuring the cable loss
In addition to the distance to the cable fault, you might also be interested in the loss
that the cable has over a particular frequency span.
Identifying Cable Faults
