User`s guide

Using the Oscilloscope

Agilent Infiniium 90000 X-Series Oscilloscopes User’s Guide 39

• You can also use the controls in the horizontal and trigger toolbar to

adjust the horizontal scale. Click the horizontal scale field to display a

pop- up numeric keypad that lets you set a particular horizontal scale.

• Or, you can use the two icons to the right. The left (smaller) icon

shrinks the waveform, which decreases the horizontal scale and

increases the time per division. The right icon stretches the waveform,

which increases the horizontal scale and decreases the time per

division.

Adjusting the horizontal trigger position (delay)

• To move the waveform to the right, turn the horizontal position knob

clockwise. To move the waveform to the left, turn the knob

counter- clockwise.

Moving the waveform to the right shows more of the pre- trigger data

(data acquired before the trigger event). Moving the waveform to the

left shows more of the post-trigger data (data acquired after the trigger

event).

The horizontal position knob is the smaller of the two horizontal

control knobs. It is marked with a set of arrows. There is a momentary

pause at zero while you are turning the knob. Continuing to turn the

knob will move the horizontal position through zero.

• When you click and drag the desired waveform, the horizontal position

will change for all channels and functions on the display, but the

waveform memories will not change.

• You can also use the controls in the horizontal and trigger toolbar to

adjust the horizontal position. Click the horizontal position field to

display a pop- up numeric keypad that lets you set a particular

horizontal position (time relative to the trigger at the highlighted

horizontal reference point). Or, you can use the three icons to the right.

The left arrow moves the waveform to the left, the center “0” resets the

horizontal position (delay) to zero, and the right arrow moves the

waveform to the right.

Magnifying a part of the waveform using Zoom

• To turn on zoom, press the [Zoom] key.

The waveform display area splits into two regions. The top one is the

main timebase. The bottom is the zoomed timebase, which represents

an expansion of the acquired waveform data. A section of the waveform

in the main sweep window is highlighted to indicate the part shown in

the delayed sweep window.