Rohde & Schwarz RTE Series - Coupling; Invert Channel; Offset

Acquisition and waveform setup
R&S
®
RTE
187User Manual 1326.1032.02 ─ 20
By default, the horizontal grid axis remains in the center when the offset is changed. To
shift the axis together with the waveform, disable Keep Y-grid fixed in "Display > Dia-
gram Layout".
Remote command:
CHANnel<m>:POSition on page 1118
Invert channel
Turns the inversion of the signal amplitude on or off. To invert means to reflect the volt-
age values of all signal components against the ground level. If the inverted channel is
the trigger source, the instrument triggers on the inverted signal.
You can use inversion, for example, to switch the polarity of a differential signal without
changing the probe connections.
Remote command:
CHANnel<m>:INVert on page 1119
Coupling
Selects the connection of the channel signal. The coupling determines what part of the
signal is used for waveform analysis and triggering.
In addition to coupling, the signal can be filtered for high frequency rejection,
see .Chapter 5.8, "Digital filter setup", on page 230
"DC 50 Ω"
Connection with 50 Ω termination, passes both DC and AC compo-
nents of the signal.
"DC 1 MΩ"
Connection with 1 MΩ termination, passes both DC and AC compo-
nents of the signal.
"AC"
Connection with 1 MΩ termination through DC capacitor, removes DC
and very low-frequency components.
If AC coupling is set, the attenuation of passive probes has no effect,
and voltage is applied to the instrument with factor 1:1. Observe the
voltage limits, otherwise you can damage the instrument.
Remote command:
CHANnel<m>:COUPling on page 1117
Offset
The offset voltage is subtracted to correct a signal with DC offset. The vertical center of
the selected channel is shifted by the offset value and the signal is repositioned within
the diagram area. Negative offset values move up the waveform, positive values move
it down.
The offset of a signal is determined and set by the autoset procedure. The current
value is shown in the waveform label, and it is marked by a small triangle in the grid.
If a Rohde & Schwarz differential probe is connected, the offset is the differential offset.
DC
50 Ω
DC
1 MΩ
AC
Vertical settings