Keysight Technologies InfiniVision 6000L Series, Service Manual

Page: 63 / 100

Troubleshooting
4
6000L Series Oscilloscopes Service Guide 63
6 If you still do not see the waveform, use the troubleshooting flowchart in this
chapter to isolate the problem.
To compensate the analog probes
You should compensate your analog probes to match their characteristics to the
oscilloscope’s channels. A poorly compensated probe can introduce measurement
errors.
1 Perform the procedure “To verify basic oscilloscope operation" on page 62
2 Use a nonmetallic tool to adjust the trimmer capacitor on the probe for the
flattest pulse possible. The trimmer capacitor is located on the probe BNC
connector.
Figure 10 Example pulses
3 Connect probes to all other analog channels (channels 2, 3, and 4 of a
4-channel oscilloscope). Repeat the procedure for each channel. This matches
each probe to each channel.
The process of compensating the probes serves as a basic test to verify that the
oscilloscope is functional.
comp.cdr
Perfectly compensated
Over compensated
Under compensated