Technical data

2 Displaying Data
46 Agilent 3000 Series Oscilloscopes User’s Guide
To adjust the vertical position
Adjusting their vertical position lets you compare waveforms by aligning
them above one another or on top of each other.
When an input channel waveform is on:
• Turn the vertical position knob to change the vertical position of the
waveform on the screen.
Notice that the ground reference symbol on the left side of the display
moves with the waveform.
Notice that, as you adjust the vertical position, a message showing the
position of the ground reference relative to the center of the screen is
temporarily displayed in the lower left- hand corner of the screen.
To specify channel coupling
1 If the channel’s menu is not currently displayed, press the channel
button (1
, 2).
2 In the Channel menu, press Coupling to select between:
• DC — passes both DC and AC components of the input waveform to
the oscilloscope. See Figure 16.
You can quickly measure the DC component of the waveform by
simply noting its distance from the ground symbol.
• AC — blocks the DC component of the input waveform and passes
the AC component. See Figure 17.
This lets you use greater sensitivity (amplitude/div settings) to
display the AC component of the waveform.
• GND — the waveform is disconnected from the oscilloscope input. See
Figure 18.