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PCI-DAS6013 and PCI-DAS6014 User's Guide
A/D START TRIGGER signal
Use the A/D START TRIGGER signal for conventional triggering (when you only need
to acquire data after a trigger event).
signal timing for a conventionally triggered acquisition.
A/D Start Trigger
Start Scan
Figure 4-3. Data Acquisition Example for Conventional Triggering
The A/D START TRIGGER source is programmable and may be set to any of the
AUXIN inputs. The polarity of this signal is also programmable to trigger acquisitions
on either the positive or negative edge.
The A/D START TRIGGER signal is also available as an output and can be
programmed to appear at any of the AUXOUT outputs. See
for A/D START TRIGGER input and output timing requirements.
Rising Edge Polarity
Falling Edge Polarity
Convert
Scan Counter
Figure 4-4. A/D START TRIGGER Input Signal Timing
Figure 4-5. A/D START TRIGGER Output Signal Timing
Figure 4-3
shows the A/D START TRIGGER
4
3
2
t
w
t
= 37.5 ns minimum
w
t
w
t
= 50 ns
w
4-5
Functional Details
1
0
Figure 4-4
and
Figure 4-5
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