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12.3 Troubleshooting
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Problem Check
LED does not light when the
unit is turned on.
Is power cord connected properly?
No waveform is described on
the display even if pressing
the START key.
Is the "Pre-trig wait" message displayed? (When pre-
triggering is activated, triggering does not occur until the
current waveform is fully captured.)
Has the "Wait for trig" message appeared? (Check the
trigger settings.)
Is the waveform display OFF?
There is absolutely no
variation in the recorded
waveform.
Is the measurement range setting appropriate?
Has a low pass filter been set?
Recording lines are dense Input signal contains ripple components. Make suitable
filter settings at input unit.
Is the low-pass filter ON?
The measured frequency
value is much lower than the
actual frequency.
An aliasing error has occurred.
Change the time axis range to a faster sampling rate. For
details, see 13.2.
Install a low-pass filter.
The keys are dead and do
not respond.
Has the unit been put into the key lock condition (key lock
icon is appeared on the display) ? (Press the left and right
CURSOR key simultaneously to clear the key lock
condition.)
The size of a waveform does
not change, even if the input
range is changed.
Has the variable function been enabled? (Disable the
variable function.)
NOTE
If none of the above conditions apply, and the cause of the problem is not
understood, try performing a "
SYSTEM RESET
". All the settings will revert to the
factor
settin
s. For details
see Section 7.2.8.
12.3 Troubleshooting
If the unit does not seem to operate normally, check the following points
before requesting service.
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