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4.2 Fault troubleshooting
1. If the screen of the oscilloscope is still black and does not have any display after the
power switch is pressed, please follow the steps below :
(1)
Check whether the power plug is rightly connected.
(2)
Check whether the power switch is really pressed down.
(3)
Reboot the instrument after finishing the inspection above.
(4)
Please contact Gratten if the product still cannot be used properly.
2. Treat the fault according to the following steps if the waveform of the signal does
not appear in the picture after the signal is acquired:
(1)
Check whether the probe is normally connected to the signal connecting wire.
(2)
Check whether the signal connecting wire is normally connected to the BNC.
(3)
Check whether the probe is normally connected with a to-be-measured signal.
(4)
Check whether a signal is generated at a to-be-measured signal point.
(5)
Reacquire the signal once.
3. Check whether the channel attenuation coefficient accords with the probe
attenuation ratio actually used if the measured voltage amplitude is 10 times larger
or 10 times smaller than the actual value.
4. If waveform exists but not stable:
(1)
Check whether the signal source option of the trigger panel accords with the
signal channel actually used.
(2)
Check the trigger type: general signals apply
“EDGE TRIGGER”
mode, video
signals apply
“VIDEO TRIGGER”
mode, and the waveform is only stably
displayed when suitable trigger mode is applied.
(3)
Try to change
“COUPLING”
into
“HIGH-FREQUENCY RESTRIT”
and
“LOW-FREQUENCY RESTRIT” for display so as to filter high-frequency noise or
low-frequency noise triggered by interference.
5.
If no waveform display during work.
Please check whether the trigger mode of the trigger panel is at the
“NORMAL”
or
“SINGLE”
position and whether the trigger electric level surpasses the waveform
range, if so, center the trigger electric level, or set the trigger mode as
“AUTO”
