Owon HDS-N Series Uživatelský manuál stáhnout pdf (Strana 82)

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

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.

 Check whether the signal item in the trigger mode menu matches the actually used signal

channel.

 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.

 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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Owon HDS-N Series Uživatelský manuál Strana 82