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PCI-DAS6052 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
The A/D START TRIGGER source is programmable and may be set to any of the
AUXIN inputs or to the DAQ-Sync DS A/D START TRIGGER input. 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
Start Scan
Convert
Scan Counter
Figure 4-3. Data Acquisition Example for Conventional Triggering
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
4-6
Functional Details
1
0
Figure 4-4
and
Figure 4-5
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