Troubleshooting - Owon AS Series User Manual

4. Troubleshooting

1. Oscilloscope is powered on but no Display.
 Check whether the power connection is connected properly.
 Check whether the fuse which is beside the AC power input jack is blew
(the cover can be pried open with a straight screwdriver).
 Restart the instrument after completing the checks above.
 If the problem persists, please contact OWON and we will be under your
service.
2. After acquiring the signal, the waveform of the signal is not displayed in
the screen.
 Check whether the probe is properly connected to the signal connecting
wire.
 Check whether the signal connecting wire is correctly connected to the
BNC (namely, the channel connector).
 Check whether the probe is properly connected with the object to be
measured.
 Check whether there is any signal generated from the object to be
measured (the trouble can be shot by the connection of the channel from
which there is a signal generated with the channel in fault).
 Make the signal acquisition operation again.
3. The measured voltage amplitude value is 10 times or 1/10 of the actual
value.
Look at the attenuation ration of the probe (see "Set the Probe Attenuation
Coefficient" on P9).
4. There is a waveform displayed, but it is not stable.
 Check whether the trigger source (Int/Line/Ext controls on the front panel)
is in conformity with the signal channel used in the practical application.
 Press down the Lock button on the front panel.
4.Troubleshooting
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