Spectrum Analyzer Mode
R&S
®
Cable Rider ZPH
172
User Manual 1321.0950.02 ─ 07
3. Select the unit you require from the submenu.
The R&S Cable Rider ZPH displays the power level in the selected unit.
8.1.3
Measuring the Occupied Bandwidth
The proper operation of a transmission network requires that all transmitters adhere to
the bandwidths assigned to them. The occupied bandwidth is defined as the bandwidth
that contains a specified percentage of the entire power of the transmitter.
Numerous standards require an occupied bandwidth of 99 which is also the default set-
ting. If you need another percentage for the occupied bandwidth, you can set values
from 10 % to 99.9 %.
After entering the channel bandwidth, the R&S Cable Rider ZPH automatically selects
the measurement parameters so that you can attain the best result.
1. Press the [MEAS] key.
2. Select the "Meas Mode" softkey.
3. The R&S Cable Rider ZPH opens a submenu to select the measurement mode.
4. Select the "Occupied BW" menu item.
The R&S Cable Rider ZPH starts to measure the occupied bandwidth.
Two vertical lines show the occupied bandwidth.
Figure 8-2: Screen layout for the occupied bandwidth
1 = Occupied bandwidth measurement mode
2 = Occupied bandwidth numerical
3 = Measurement standard
4 = Channel bandwidth
5 = Power percentage
Performing Spectrum Measurements
