Reference
Horizontal Control
You can control the horizontal part of the display (the time base) using the
horizontal menu and knobs.
By changing the horizontal scale, you can focus on a particular portion of a
waveform. By adjusting the horizontal position, you can move the waveform
right or left to see different portions of the waveform. That is particularly
useful when you are using larger record sizes and cannot view the entire
waveform on one screen.
To change the horizontal scale and position, use the horizontal POSITION
and horizontal SCALE knobs (see Figure 3-37). These knobs manage the
time base and horizontal waveform positioning on the screen. When you use
either the horizontal SCALE or POSITION knobs, you affect all the waveform
records displayed.
When you use either the horizontal SCALE or POSITION knobs, you affect
all displayed waveform records. If you want the POSITION knob to move
faster, press the SHIFT button. When the light above the shift button is on
and the display says Coarse Knobs in the upper right corner, the POSITION
knob speeds up significantly.
Figure 3-37: Horizontal Controls

Horizontal Knobs