OWON HDS-N Series Handheld DSO & DMM 9-
Trouble Shooting
9. Trouble Shooting
1.
The oscilloscope does not power up
It may be caused by the dead battery. At this time, the oscilloscope will not start even if it is
powered by the battery charger. Firstly, charge the battery and supply the oscilloscope with
power through the battery charger. However, don't switch on the oscilloscope till waiting for
15 minutes. If the oscilloscope still cannot start, please contact OWON for service.
2.
The oscilloscope stops working only after operating for several seconds
Probably the battery is dead; Check the battery symbol at the upper left of the screen. The
symbol indicates that the battery has been run out of power and must be charged.
3.
The measurement type displays ERR when you switch to the Multimeter
mode.
Probably you do not select the measuring mode. In this case, push down any key of the three
keys A, V or R. Thus, the relative measuring mode will be shown on the screen. If the ERR is
still displayed, restart the oscilloscope.
4.
The measured voltage amplitude value is 10 times larger or smaller than the
real value under the oscilloscope mode.
Check whether the channel attenuation level matches the actual probe attenuation ratio.
5.
The waveform is displayed on the screen but is not stable under the
oscilloscope mode.
z
Check whether the signal item in the trigger mode menu matches the actually used signal
channel.
z
Check on the trigger mode: The edge trigger mode is applicable to the universal single
and the video trigger mode applicable to the video signal. Only when the proper trigger
mode is applied, can the waveform be in stable.
z
Try to change the trigger coupling into the HF rejection and LF rejection to filter the HF
or LF noise trigger by the interference.
6.
There is no display on the screen when you push down RUN/STOP key under
the oscilloscope mode.
Check whether the trigger mode in the trigger mode menu is in normal or single shot and
whether the trigger level is out of the waveform range.
In such condition, adjust and make the trigger level in the middle or select the non-auto
trigger mode. Additionally, press the
AUTO SET
key and complete the above setting
7.
When select the average sampling in the sampling mode or select a longer
display time in the display mode under the oscilloscope, the display speed is
slow.
It is normal in the above case.
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