Basic Operation
R&S
®
Cable Rider ZPH
78
User Manual 1321.0950.02 ─ 07
10. Enter the attenuation you need.
The R&S Cable Rider ZPH shows the current attenuation level in the "Parameter
View".
4.7.2
Using the Preamplifier
The R&S Cable Rider ZPH has an optional preamplifier (R&S ZPH-B22, order number
1334.5627.02) to increase sensitivity. Depending on the frequency, the gain of the
amplifier is in the range from 15 dB to 20 dB and increases the sensitivity by 10 dB to
15 dB.
In the signal path, the preamplifier comes after the input protection circuit and before
the RF attenuator of the R&S Cable Rider ZPH to provide excellent sensitivity when
the preamplifier is switched on.
1. Press the [SCALE/AMPT] key.
2. Select the "Att/Amp/Imp" softkey.
3. Enable or disable the "Preamp" checkbox to turn on or off the preamplifier of the
R&S Cable Rider ZPH.
The magnitude of amplification depends on the reference level. This coupling to the
reference level makes sure that the dynamic range is at an optimum.
4.7.3
Measuring CW Signals
A basic task for spectrum analyzer is to measure the level and frequency of sinewave
signals. The following examples illustrate an effective way of performing these mea-
surements.
Using the Spectrum Analyzer
