SDS5000XSeries Digital Oscilloscope Service Manual
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If the baseline trace drift out of specification
Check that the fan is running.
Check that the vertical position setting is working.
Perform self-calibration following the procedures in the User
Manual.
If self-calibration does not work, contact SIGLENT for further
instructions.
If there is an unexpected trace when no input connected to channel
input
Power cycle the oscilloscope.
Upgrade to the latest firmware.
Contact SIGLENT for further instructions.