Troubleshooting - Rigol MSO4000 Series Quick Manual

Troubleshooting

The commonly encountered failures and their solutions are listed below. When you
encounter those problems, please solve them following the corresponding steps. If
the problem remains still, please contact RIGOL and provide your device
information (acquisition method: Utility  System  System Info).
1. The screen is still dark (no display) after power on:
(1) Check whether the power is correctly connected.
(2) Check whether the power switch is really on.
(3) Restart the instrument after finishing the above inspections.
(4) If it still does not work correctly, please contact RIGOL.
2. The signal is sampled but no waveform of the signal is displayed:
(1) Check whether the probe is correctly connected to the signal connecting
wire.
(2) Check whether the signal connecting wire is correctly connected to the BNC
(namely channel connector).
(3) Check whether the probe is correctly connected to the item under test.
(4) Check whether there are signals generated from the item under test (you
can connect the probe compensation output signal to the problematic
channel to determine which has problems, the channel or the item under
test).
(5) Resample the signal.
3. The tested voltage amplitude is greater or lower than the actual value
(note that this problem usually occurs when probe is used):
Check whether the attenuation coefficient of the channel complies with the
attenuation ratio of the probe.
4. There is waveform display but not stable:
(1) Check the trigger signal source: check whether the Source in the trigger
menu complies with the signal channel actually used.
(2) Check the trigger type: general signals should use "Edge" trigger and video
signal should use "Video" trigger. Only when the proper trigger type is used,
can the waveform be displayed stably.
MSO4000/DS4000 Quick Guide
RIGOL
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