Vertical Controls 3
Keysight InfiniiVision 3000T X-Series Oscilloscopes User's Guide 87
3 Press the Channel on/off key to turn the channel on (if the channel is off).
4 In the Channel Menu, press the Probe softkey.
5 In the Channel Probe Menu, the second softkey from the left is for specifying
your probe head (and attenuation). Repeatedly press this softkey until the
probe head selection matches the attenuator you are using.
The choices are:
• 10:1 single-ended browser (no attenuator).
• 10:1 differential browser (no attenuator).
• 10:1 (+6 dB Atten) single-ended browser.
• 10:1 (+6 dB Atten) differential browser.
• 10:1 (+12 dB Atten) single-ended browser.
• 10:1 (+12 dB Atten) differential browser.
• 10:1 (+20 dB Atten) single-ended browser.
• 10:1 (+20 dB Atten) differential browser.
6 Press the Calibrate Probe softkey and follow the instructions on the display.
For more information on InfiniiMax probes and accessories, see the probe's User's
Guide.
When calibrating a differential probe, connect the positive lead to the Probe Comp terminal
and the negative lead to the ground terminal. You may need to connect an alligator clip to the
ground lug to allow a differential probe to span between the Probe Comp test point and
ground. A good ground connection ensures the most accurate probe calibration.
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