Vertical Controls 3
Keysight InfiniiVision HD3-Series Oscilloscopes User's Guide 61
• "To specify the probe skew" on page 62
• "To specify the channel external scaling" on page 63
To specify the channel units
1 Open the Channel dialog box by selecting the Channel badge or by choosing
Sources > Channel N... from the main menu.
2 In the Channel dialog box, select Probe....
3 In the Probe dialog box, select the Units:
• Volts — for a voltage probe.
• Amps — for a current probe.
Channel sensitivity, trigger level, measurement results, and math functions will
reflect the measurement units you have selected.
To specify the probe attenuation
This is set automatically if the oscilloscope can identify the connected probe. See
Analog channel inputs (see
page 22).
The probe attenuation factor must be set properly for accurate measurement
results.
If you connect a probe that is not automatically identified by the oscilloscope, you
can manually set the attenuation factor as follows:
1 Open the Channel dialog box by selecting the Channel badge or by choosing
Sources > Channel N... from the main menu.
2 In the Channel dialog box, select Probe....
3 In the Probe dialog box, select how you want to specify the Attenuation factor,
choosing either Ratio or Decibels.
4 Select the attenuation factor field (either Ratio or Decibels), and turn the Entry
knob to set the attenuation factor for the connected probe.
When measuring voltage values, the attenuation factor can be set from 0.001:1 to
10000:1 in a 1-2-5 sequence.
When measuring current values with a current probe, the attenuation factor can
be set from 10 V/A to 0.0001 V/A.
When specifying the attenuation factor in decibels, you can select values from
-20 dB to 80 dB.
If Amps is chosen as the units and a manual attenuation factor is chosen, then the
units as well as the attenuation factor are displayed in the Channel badge.
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