Teledyne LeCroy LabMaster 9Zi-A - Manual (Page 163)

Getting Started Manual
922157-00 Rev A 155
by a small increment.
OR
If you want to zoom in or out in large standard increments with each
touch of the zoom control buttons, leave the Var. checkbox
unchecked.
OR
If you want to set exact horizontal or vertical zoom factors, touch
inside the Horizontal Scale/div data entry control and provide a
time-per-div value using your preferred input control method.
Additional information on using the touch screen controls can be
found in the Dialog Area (on page 87). Then touch inside the Vertical
Scale/div control and enter a voltage value.
To reset the zoom to x1 magnification, touch Reset Zoom in the dialog.
You can also use the Zoom and Math front panel knobs to adjust the
horizontal and vertical zoom.

Horizontal Position - Press to reset the horizontal zoom position to
zero. Turn to change the horizontal position of the selected math or
zoom trace.

Horizontal Ratio - Press to toggle between fixed and variable
horizontal zoom ratio adjustment. Turn to change the horizontal
zoom ratio of the selected math trace.

Quick Zoom - Press to automatically display magnified views of up to
four signal inputs on multiple grids. With four input signals, the
signals are displayed along with four zoom traces, each on its own
grid. Pressing this button also turns off all other traces.

Vertical Position - Press to reset the vertical zoom position to zero.
Turn to change the vertical position of the selected math or zoom
trace.

Vertical Ratio - Press to toggle between fixed and variable vertical
zoom ratio adjustment. Turn to change the vertical zoom ratio of the
selected math trace.