Technical data

Troubleshooting 4
7000 Series Oscilloscopes Service Guide 73
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 72
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 11 Example pulses
3 Connect probes to all other analog channels (channel 2 of a
2-channel oscilloscope, or 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
7000 service guide.book Page 73 Thursday, October 16, 2008 12:18 PM