User manual

Acquisition and Setup
R&S
®
RTO
29User Manual 1316.0827.02 ─ 06
Restrict offset to acquisition range
Ensures that the trigger occurs within one acquisition cycle. If enabled, the trigger cannot
be set outside the waveform diagram.
SCPI command:
TRIGger<m>:OFFSet:LIMited on page 489
Roll mode
Configures the roll mode for slow time bases:
Mode ← Roll mode
Activates the automatic roll mode. If set to "Auto", the instrument activates the roll mode
under specific conditions. In roll mode, the instrument shows the waveforms immediately,
without waiting for the complete acquisition of the waveform record. If the time base is
slow - at long time scale values - the roll mode saves waiting for the waveform display.
The instrument displays newly acquired waveform points at the right edge of the display
and moves the waveform to the left.
The roll mode is activated automatically if the following conditions are fulfilled:
●
Acquisition time exceeds the "Min roll mode gain" value
● Record length is ≤1 MSa
●
Waveform arithmetic is disabled ("Off")
●
All channel waveforms are set to the same decimation mode, and to one of these
values: "Sample", "Peak detect", or "High res"
●
All measurements are disabled
●
All mask tests are disabled
●
Ultra Segmentation is disabled
●
FFT is disabled
●
All serial buses are disabled
The roll mode has following restrictions:
●
Persistence is disabled
●
History is not available
SCPI command:
TIMebase:ROLL:ENABle on page 430
Minimum acquisition time for roll mode activation ← Roll mode
The instrument can activate the roll mode automatically if the Acquisition time exceeds
the threshold given here.
SCPI command:
TIMebase:ROLL:MTIMe on page 430
2.3.1.2 Resolution
The settings in the "Resolution" tab mainly define the precision of the waveform record.
The resolution settings interact, changing one parameter affects one or more of the other
parameters as well. For background information, see chapter 2.1.3, "Horizontal Sys-
tem", on page 19.
Reference for Acquisition and Setup