Keysight Technologies InfiniiVision 2000, Service Manual

Page: 23 / 86

Testing Performance
2
2000/3000 X-Series Oscilloscopes Service Guide 23
To test digital channels (MSO models only)
The acquisition system testing provides confidence that the acquisition system is
functioning correctly. It does not, however, check a particular specification.
1 Disconnect all probes from the circuit under test and from any other input
source.
2 Using probe leads and grabbers, connect digital channels D0, D1, D2, and D3
to the Probe Comp signal on the center of the front panel.
3 Press the [AutoScale] key.
If four square waves appear, the acquisition system is functioning correctly.
If the square waves do not appear, go to the “Troubleshooting” chapter. Then
return here to finish testing the digital channels.
4 Disconnect the digital channels from the calibration point.
5 Use steps 2 and 3 to test the following sets of digital channels. After you test
one set of digital channels, remove them before connecting the next set.
• D4, D5, D6, D7
• D8, D9, D10, D11 (on 3000 X-Series models)
• D12, D13, D14, D15 (on 3000 X-Series models)