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Overview Tasks
Setting Up Signal Input
Use this procedure to set scale and position parameters for input signal acquisition.
Prerequisites
1
Set the acquisition system to run continuously.
Connect input
signal
2
Connect the probe to the input signal source using proper
probing/connecting techniques. For more details on input setup see
page 77.
Select the input
signal channel
3
Push a channel button (CH 1–CH 4) to select the input signal channel.
A channel button lights when its channel is on.
Select input
termination
4
Push an input termination button to toggle between 1 MΩ and 50 Ω
input termination.
Some probes automatically set their termination value.
Select input
coupling
5
Open the Vertical Setup control window by clicking Vert on the button
bar or selecting the Vertical Setup command from the Vertical menu.
To change the input coupling, select the appropriate channel tab and
click:
 DC to couple both the AC and DC components of an input
signal.
 AC to couple only the AC components of an input signal.
 GND to disconnect the input signal from the acquisition system.
6 Click Close to close the window.
Invert the
channel
7
Click Invert to toggle inversion of the selected waveform. When
Invert is On, the selected waveform appears mathematically inverted
(flipped) on the zero volt axis. No trace of the normal waveform is
left on the screen.
Set the vertical
acquisition
window
8
Use the vertical knobs to scale and position the waveform on screen.
Dragging the waveform handle also positions the waveform.
9 Open the Vertical Setup control window as described in Step 5. To
change the offset, click the Offset control, and use the multipurpose
knob to adjust the offset.
Set the
horizontal
acquisition
window
10
Use horizontal knobs to scale and position the waveform on the screen
and to set the record length. Dragging the reference icon also positions
the waveform.
11 Use the Resolution knob to set the record length and sample interval.
12 If required to stabilize the display, push the trigger LEVEL control to
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