Dalsa X64 Xcelera-HS PX8, Руководство пользователя

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X64 Xcelera-HS PX8 User's Manual X64 Xcelera-HS PX8 Reference
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47
Synchronization Signals for a Virtual Frame of 10 Lines.
The following timing diagram shows the relationship between an External Frame Trigger input,
External Shaft Encoder input (one phase used with the second terminated), and camera control
output to the camera.
LVAL
Notes: • In this example -- 10 lines are acquired
• The Maximum frame rate = Max. Line Rate / nb lines (Hz)
• In / Out signal reference is relative to frame grabber
Video Line
Camera
Control
Shaft Encoder
Virtual Frame
Trigger
In
In
In
In
Out
10 Lines
Acquired
n Lines
Ignored
CVI File (VIC) Parameters Used
The VIC parameters listed below provide the control functionality for virtual frame reset.
Applications either load pre-configured .cvi files or change VIC parameters directly during runtime.
Note that camera file parameters are best modified by using the Sapera CamExpert program.
External Frame Trigger Enable = X, where: (with Virtual Frame Trigger enabled)
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If X = 1, External Frame Trigger is enabled
• If X = 0, External Frame Trigger is disabled
External Frame Trigger Detection = Y, where: (with Virtual Frame Trigger edge select)
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If Y= 1, External Frame Trigger is active low
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If Y= 2, External Frame Trigger is active high
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If Y= 4, External Frame Trigger is active on rising edge
• If Y= 8, External Frame Trigger is active on falling edge
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If Y= 32, External Frame Trigger is dual-input rising edge
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If Y= 64, External Frame Trigger is dual-input falling edge
External Frame Trigger Level = Z, where: (with Virtual Frame Trigger signal type)
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If Z= 2, External Frame Trigger is a RS-422 signal
For information on camera files see the Sapera Acquisition Parameters Reference Manual (OC-
SAPM-APR00).