Putting into Operation
R&S
®
RT
‑
ZD10/20/30
25
User Manual 1410.4550.02 ─ 01
The R&S
RT
‑
ZD10/20/30 measures only differential input signals. Common
mode signals are suppressed by the probe. Therefore, the common mode
offset compensation is not directly visible on the oscilloscope screen, see
also
chapter 5.2, "Dynamic Range and Operating Voltage Window"
on page 43. An incorrect common mode offset compensation can lead to
unwanted clipping effects. Measuring the common mode input voltage
using the R&S ProbeMeter is a convenient way to detect breaches of the
operating voltage window.
To set the common mode offset compensation using the probe menu
1. On the "Vertical" menu, select "Probe Setup".
2. Select the channel and tap "CM offset".
2.4
R&S ProbeMeter
The integrated voltmeter can measure DC voltages with very high precision com-
pared to the oscilloscope's DC accuracy. The DC measurement is performed
continuously and in parallel to the time domain measurement of the oscilloscope.
High-precision measurements are achieved through immediate digitization of the
measured DC voltage inside the probe.
The R&S ProbeMeter measures the differential and common mode DC voltages
simultaneously and without reconnecting the probe. For a definition of differential
and common mode input voltages, see
chapter 5, "Characteristics of Differential
To activate the R&S ProbeMeter:
► Vertical > Probe Setup > Ch > R&S ProbeMeter 'on'
After the R&S ProbeMeter has been activated, the measured values are dis-
played on the screen of the oscilloscope.
Advantages of the R&S
ProbeMeter:
●
Enables the user to check DC voltages with different levels without having to
adjust the measurement range of the oscilloscope.
R&S ProbeMeter
