Dalsa PC2-CamLink, Руководство пользователя

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PC2-CamLink User's Manual Part I: PC2-CamLink Board
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Note: The EXSYNC and PRIN pulse generators are fired by the selected trigger source. For area scan,
if no trigger source is enabled, the pulse generators are triggered as soon as the previous frame has
been captured. This is similar to a free-running mode where EXSYNC and PRIN are generated as fast
as possible. For linescan cameras, a line trigger source is required to get an EXSYNC or PRIN pulse.
You can select the user timer to generate a trigger at a specified rate.
The EXSYNC and PRIN pulse generators can be combined to generate a double-pulse on the same
camera control pin.
Each pulse generator has the following capabilities:
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Programmable polarity (active high or active low)
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Programmable delay from trigger event (up to 65 seconds)
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Programmable duration (up to 65 seconds)
Timer granularity is 1µs when the delay and duration values are below 65ms. Granularity falls to 1ms
for delay or duration above 65ms. Delay and duration always have the same granularity.
Each timer for area scan can be started on the following trigger events:
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Opto1 or Opto2 trigger pins
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LVDS1 or LVDS2 trigger pins
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SW trigger
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User timer
Each timer for line scan can be started on the following trigger events:
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Shaft encoder
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User timer
Note: Both pulse generators are always fired by the same trigger source.
EXSYNC
The external synchronization output (EXSYNC) can control camera timing and integration. EXSYNC
is a programmable pulse generator: the delay from the trigger and the pulse duration are programmable
from 1µs to 65 seconds. The polarity of the EXSYNC output is programmable.
EXSYNC Pulse Generator
Ext. Trigger
EXSYNC
Offset
Active
Time
Figure 3: EXSYNC Pulse Generator