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32 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 Teledyne Test Tools as soon as possible.
1. The screen has no display after power on:
1) Check whether the power is correctly connected.
2) Check whether the power switch is really on.
3) Check whether the fuse has blown. If the fuse needs to be changed, please
4) Restart the instrument after finishing the above checks.
5) If it still does not work correctly, please contact Teledyne Test Tools.
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
3) Check whether the probe is correctly connected to the item to be tested.
4) Check whether there are signals generated from the item to be tested.
5) Resample the signal.
3. The tested voltage amplitude is greater or lower than the actual value (Note that this
problem usually occurs when a probe is used):
1) Check whether the attenuation coefficient of the channel complies with the
2) Disconnect the oscilloscope from the external signal and do a self-cal.
4. There is a waveform displayed but it is not stable. The waveform moves across the
display over time:
1) Check the trigger signal source: Check whether the source item at the trigger
1.800.561.8187
contact Teledyne Test Tools timely and return the instrument to the factory for
replacement by the maintenance personnel authorized by Teledyne Test Tools.
(namely channel connector).
attenuation ratio of the physical probe.
panel complies with the signal channel actually used.
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information@itm.com
.com
T3DSO2000A Manual. Page 196
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