Specifications

Chapter 4: Troubleshooting
Primary Trouble Isolation
51
E
Run a self calibration.
1 Complete a self calibration by following the procedures in chapter 2.
2 If the calibration test fails, look at the details to find the channel associated with
the failure.
• If the failure is associated with a RealEdge Technology channel, replace the two
acquisition boards associated with the RealEdge Technology.
• If replacing the two acquisition boards does not fix the problem with the RealEdge
Technology channels, replace the RealEdge Technology attenuators and modules.
• If the failure is associated with channel 1, look at the specific calibration that
failed. If it was a trigger cal, a time scale cal, or an interpolator gain cal, replace
the backplane board because it is likely the problem. If the cal still fails, replace
the bottom acquisition board.
• If the failure is associated with channel 1 but is not a trigger cal, a time scale
cal, or an interpolator gain cal, replace the bottom acquisition board. If the cal
still fails, replace the backplane board.
• If the failure is not associated with channel 1, replace the acquisition board
associated with that channel (channel 1 - bottom acquisition board, channel 2
- next higher acquisition board, channel 3 - next higher acquisition board,
channel 4 - top acquisition board).
• If all four channels have cal failures, the problem may be with the calibrator
located on the backplane board, so replace that board first. If the calibration
test passes, go to step F.
F
The system is operational. Verify that the oscilloscope meets all warranted specifications
by following the procedures in the “Testing Performance” chapter.