Troubleshooting - Promax OD-603 Manual

6 TROUBLESHOOTING

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 PROMAX and we will be under
your service.
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.
The measured voltage amplitude value is 10 times or 1/10 of the
►
actual value.
Look at the attenuation coefficient for the input channel and the attenuation
ration of the probe, to make sure they are match.
There is a waveform displayed, but it is not stable.
►
Check whether the Source item in the TRIG MODE menu is in
conformity with the signal channel used in the practical application.
Check on the trigger Type item: The common signal chooses the Edge
trigger mode for Type and the video signal the Video. If Alternate
trigger is selected, both of the channel 1 and channel 2 trigger levels
should be adjusted to the proper position. Only if a proper trigger
mode is applied, the waveform can be displayed steadily.
Try to change the trigger coupling into the high frequency suppress
and the low frequency suppress to smooth the high frequency or low
frequency noise triggered by the interference.
June 2016
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