Specifies which reference clock to use for measurements.
Parameter syntax: TimebaseReference
Possible values: Auto, Internal, External
Default value (RST condition): Auto
Description
Defines which reference clock will be used for measurement.
Internal - Internal timebase reference is used
External - External timebase reference is used if it is connected and within expected parameters, otherwise measurement is not performed.
Auto - External timebase reference is used if it is connected and within expected parameters, otherwise internal
Example
SYST:CONF "TimebaseReference = External"