Protek A434L Operating Manual page 68

 Info: Hides or displays the trace information window on the upper
right corner of the screen. This is used to view traces overlaid with
the trace information window.
 Clear CH: Deletes an active trace channel from the screen. The
cleared channel is not restored. It is used to select and delete a
trace channel one by one when multiple channels are displayed on
the screen. Verify the channels to delete with View ON/OFF
function in advance settings as cleared channels cannot be
restored.
Clear All: Deletes all channels from the instrument and initialize

the trace settings.
6. Peak
This key is used to find the peak value of a trace. Pressing this key leads to
the activation of
Marker CH1 and places the marker to the peak point of the trace.
Peak Right: Moves a marker to the nearest peak on the right.

Peak Left: Moves a marker to the nearest peak on the left.

 Max Search: Moves a marker to the highest point of the trace.
Min Search: Moves a marker to the lowest point of the trace.

7. Load
Load key enables for recalling of the Trace, Screen, and State
8. Save
Save key enables for saving of the Trace, Screen, and State.
9. Light
This key is used to adjust the brightness of the LCD display. Adjustment can
be made from 0 to 100% and the default setting is 50%.
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