Teledyne LabMaster 10 Zi Series Operator's Manual page 206

Delay Setting constant in - allows you to specify how Horizontal scale
changes are displayed. Choose either:

Time - As the timebase changes, keep the horizontal offset
indicator stationary. With this selection, the trigger point could
move off the grid.

Div(isions) - Have the horizontal offset indicator move with the
trigger point. With this selection, the trigger point remains on the
grid as you increase the timebase.
NOTE: Regardless of whether you select Time or Div, the Delay shown in
the Timebase Setup dialog always indicates time.
Reset trigger counter before starting a new acquisition - If available,
this selection clears the trigger counter each time the oscilloscope
issues an ARM acquisition command and applies any trigger Holdoff
conditions set on the Trigger dialog:
LM10Zi-GSM-E Rev A
Getting Started Guide
199