Ref position (%)
When the digitizer detects a trigger, it waits the length of time you specify with Delay and marks this spot as the Reference. This parameter determines where the Reference is positioned in a record as a percentage of the total record. For example, a value of 25.0 means 25% of the acquired data are pretrigger samples and 75% are posttrigger samples.
Valid Range: 0.0 – 100.0