Measurement Computing USB-1608HS-2AO - Manual (Page 21)

USB-1608HS-2AO User's Guide Functional Details
21
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
High threshold
Trigger can occur
anywhere in this area
Acquired data
+2
-2
+1
0
-1
+2
-2
+1
0
-1
Low threshold
Acquired Data
+2
-2
+1
0
-1
+2
-2
+1
0
-1
Trigger can occur
anywhere in this area