B&K Precision 2516 - Manual - Manual (Page 55)

55
Figure 23 - Horizontal Position Reference Marker
This position can be adjusted by using the keys to move left (<) or
right (>). If the left or right position key is pressed down for > 3 seconds,
the position change will be coarse. The scale factor is indicated as marked
by the illustration below.
Figure 24 - Horizontal Scale Indicator
The position with center reference to 0 will be displayed as you change the
position, as illustrated below: