Spectrum Analyzer Mode
R&S
®
Cable Rider ZPH
232
User Manual 1321.0950.02 ─ 07
To get the true power, the video bandwidth (VBW) should also be greater than the
resolution bandwidth (RBW). Otherwise, an averaging effect caused by video
bandlimiting comes into play before the RMS value is calculated.
The R&S Cable Rider ZPH provides automatic selection of the detector. In that case,
the R&S Cable Rider ZPH selects the detector that is most suitable for the current
trace mode.
Table 8-1: Auto selection of trace detector
Trace Mode
Detector
Clear/Write
Auto Peak
Average
Sample
Max Hold
Max Peak
Min Hold
Min Peak
If you select the detector manually, the detector is independent of the trace mode.
8.2.7.3
Working with a Second Trace
In spectrum mode, you can use up to two traces. All two traces are based on the same
settings, except the trace settings like the trace mode or the detector. You can use the
second trace to compare, for example, four different detector settings.
In the default state, only trace 1 is active.
1. Press the [TRACE] key.
2. Select the "Show" softkey.
3. Select the "Enable Trace 2" menu item.
The R&S Cable Rider ZPH shows the second trace. The second trace is in a differ-
ent color. To show that the second trace is active, the R&S Cable Rider ZPH dis-
plays the current active trace "Trace 1" or "Trace 2" on the "Parameter View".
After you have activated the second trace, this trace becomes the active one. All
actions (like changing the detector or trace mathematics) apply to the active trace.
4. Select the "Select Trace" softkey.
Trace 1 becomes the active trace.
Configuring Spectrum Measurements
