Agilent Technologies 24A, 54621D, 42A To set the vertical expand reference for the analog signal

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To set the vertical expand reference for the analog signal

To set the vertical expand reference for the analog signal

When changing the volts/division for analog channels, you can have the signal expand (or compress) about the signal ground point or about the center graticule on the display. This works well with two signals displayed, because you can position and see them both on the screen while you change the amplitude.

•To expand the signal about the center graticule of the display, press the Utility key, press the Options softkey, then press the Expand softkey and select

Expand About Center.

With Expand About Center selected, when you turn the volts/division, the waveform with expand or contract about the center graticule of the display.

•To expand the signal about the position of the channel’s ground, press the Utility key, press the Options softkey. Then press the Expand softkey and select Expand About Ground.

With Expand About Ground selected, when you turn the volts/division knob, the ground level of the waveform remains at the same point on the display, while the non-ground portions of the waveform expand or contract.

To set analog channel probe attenuation factor

If you have an AutoProbe self-sensing probe (such as the 10073C or 10074C) connected to the analog channel, the oscilloscope will automatically configure your probe to the correct attenuation factor.

If you do not have an AutoProbe probe connected, you can press the channel

key, then press the Probe submenu softkey, then turn the Entry knob to set the attenuation factor for the connected probe. The attenuation factor can be set from 0.1:1 to 1000:1 in a 1-2-5 sequence.

The probe correction factor must be set properly for measurements to be made correctly.

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