UTD1000 User Manual
there is no trigger signal. When the trigger signal is
generated, trigger scan occurs.
Ƶ
Single Trigger : In this mode, you only have to
press the “Run” button once and the Oscilloscope
will wait for trigger. One sampling will occur and the
acquired waveform will be displayed when the digital
storage Oscilloscope detects a trigger. Then trigger will
stop.
3.Trigger coupling : Trigger coupling determines which
quantities of the signal are transmitted to the trigger
circuit. Coupling modes are DC, AC, low frequency
suppression and high frequency suppression.
Ƶ
DC : Allowing all quantities to pass.
Ƶ
AC : Intercepting DC quantities and attenuating
signals under 10Hz.
Ƶ
Low Frequency Suppression : Intercepting DC
quantities and attenuating low frequency quantities
under 80kHz.
Ƶ
High Frequency Suppression : Attenuating high
frequency quantities over 80kHz.
4.Pretrigger/Delayed Trigger : Data sampled before/
after triggering.
The trigger position is typically set at the horizontal
center of the screen. In this case, you are able to
view 6 divisions of pretrigger and delayed information.
Adjusting the horizontal position of the waveform allows
you to see more pretrigger information. By observing
pretrigger data, you can see the waveform before
trigger occurs. For example, you can detect the glitch
that occurs when the circuitry starts. Observation and
analysis of trigger data can help you identify the cause
of glitch.
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