Hantek Tablet1000 Series - Trigger Mode; Trigger Hold-off

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Trigger oscilloscope

9.3 Trigger mode

Oscilloscope trigger mode includes normal, automatic, single trigger. The default mode

is automatic.

⚫ Normal mode: The display waveform is updated only when the oscilloscope has a

valid trigger. The oscilloscope will display the original waveform before replacing it

with a new one. Use normal mode when you only want to see valid triggered

waveforms. Under this mode, the oscilloscope displays the waveform only after the

first trigger.

⚫ Automatic mode: Acquisition can be performed automatically without a valid trigger.

This mode allows untriggered scan waveforms to occur at a time base setting of 100

ms/grid or slower. When the oscilloscope detects a valid trigger, a trigger acquisition

is performed. When the oscilloscope detects that there is no valid trigger, a

none-trigger acquisition is performed.

⚫ Single trigger mode: Enter the stop state after the acquisition only when the

oscilloscope has a valid trigger.

Forced trigger: Under normal and single trigger mode, click the forced trigger button in

the trigger menu to force a trigger signal.

When not getting enough knowledge of the feature of a signal, set in "automatic" mode

to ensure that the oscilloscope has waveform display when other trigger settings are not

correct. Although the waveform may not be stable, it can provide intuitive judgment for

further adjustment.

When we set a specific trigger condition for a specific signal, especially when the time

interval meeting the trigger condition is long, set the trigger mode to "normal" to prevent

the oscilloscope from automatically performing forced trigger.

9.4 Trigger hold-off

Trigger hold-off time indicates the time that oscilloscope waits from triggering to

re-connecting the trigger circuit. During the hold-off period, the oscilloscope does not

re-trigger until the hold-off time is over, hence, setting hold-off time can trigger complex

waveforms stably. The trigger hold-off time ranges from 8ns to 10s.

The hold-off can be triggered on repeated waveforms that have multiple edges (or other

events) between themselves. If the minimum time between triggers is known, you can

also use hold-off to trigger on the first edge of the trigger.

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