Measurement-computing USB-1608HS Manuel d'utilisateur télécharger pdf (Page 20)

USB-1608HS User's Guide Functional Details

20

Trigger above, level-sensitive

The acquisition begins when the TRIG_IN signal is above the threshold level. If the TRIG_IN signal is above the

threshold at the start of the scan, the acquisition begins immediately.

Figure 11. Trigger above, level-sensitive

Trigger below, level-sensitive

The acquisition begins when TRIG_IN receives a signal that is below the low threshold (-1.0 V). If the TRIG_IN

signal is below the threshold level at the start of the scan, the acquisition begins immediately

Figure 12. Trigger below, level-sensitive

Low threshold

Acquired Data

+2

-2

+1

0

-1

+2

-2

+1

0

-1

Trigger can occur

anywhere in this area

High threshold

Trigger can occur

anywhere in this area

Acquired data

+2

-2

+1

0

-1

+2

-2

+1

0

-1

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