User manual

Acquisition and Setup
R&S
®
RTO
46User Manual 1316.0827.02 ─ 06
Auto Zero, AutoZero DC offset, Use AutoZero
Differences in DUT and oscilloscope ground levels may cause larger zero errors affecting
the waveform. If the DUT is ground-referenced, the Auto Zero function corrects the zero
error of the probe to optimize measurement results at small signal levels.The validation
limit depends on the probe attenuation because probes with high attenation often have
to compensate high offsets. Auto zero detects offset values even when the signal is out
of the current measurement range.
To correct the zero error, short the signal pin and the ground pin together and connect
them to the ground of the DUT. Then tap "Auto Zero".
The instrument performs a mean measurement and displays the result in the "AutoZero
DC offset" field. To include this additional offset in measurement results, enable "Use
AutoZero".
Auto Zero is available for all probes.
SCPI command:
PROBe<m>:SETup:OFFSet:AZERo on page 445
Micro button action
Active R&S probes (except for RT-ZS10E) have a configurable Micro Button on the probe
head. Pressing this button, you can perform an action on the instrument directly from the
probe. During internal automatic processes the button is disabled, for example, during
self alignment, autoset, and find level.
Select the action that you want to start from the probe:
"Run Continuous"
is the default assignment. The acquisition is running as long as you
press the micro button again.
"Run single"
Starts one acquisition.
"Auto set"
Starts the autoset procedure.
"Auto Zero"
See: "Auto Zero, AutoZero DC offset, Use AutoZero" on page 46.
"Set offset to mean"
See: "Set offset to mean" on page 45.
"Print"
Prints the current display according to the "Printer control" settings in
the "Print" dialog box, see chapter 12.3, "Reference for PRINT Set-
tings", on page 357. Depending on the selected printer. you can print
to a local or network driver, or save to a file.
"Save image to file"
Saves the current display as image according to the image settings in
the "Print" dialog box, see chapter 12.3, "Reference for PRINT Set-
tings", on page 357.
"No action"
Select this option to prevent unwanted actions due to unintended usage
of the micro button.
SCPI command:
PROBe<m>:SETup:MODE on page 445
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Reference for Acquisition and Setup