Dalsa PC2-Comp Express OC-P2EM-COMP0, Руководство пользователя

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PC2-Comp Express Theory of Operation
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End of Odd Field
The End of Odd Field event is only available for interlaced scan cameras. There is an End of Odd
Field event when the odd field has been transferred from front end to onboard memory. The Sapera
event value is CORACQ_VAL_EVENT_TYPE_END_OF_ODD.
End of Even Field
The End of Even Field event is only available for interlaced scan cameras. There is an End of Even
Field event when the even field has been transferred from front end to onboard memory. The Sapera
event value is CORACQ_VAL_EVENT_TYPE_END_OF_EVEN.
Acquisition Status
Chroma Present
The Chroma Present status indicates the presence of the color component in the input video signal.
When connecting a monochrome video source, this status will be FALSE.
The Sapera status value is CORACQ_VAL_SIGNAL_CHROMA_PRESENT.
Horizontal Sync Lock
The Horizontal Sync (HS) Lock status indicates the state of the ADC'sphase-locked loop (PLL) with
respect to the incoming horizontal sync. In order to digitize accurately, the PLL must be synchronized
(that is, be locked) to the incoming video HS. Typically, the application first verifies the HS lock
condition before starting an acquisition sequence.
The Sapera status value is CORACQ_VAL_SIGNAL_HSYNC_LOCK.
Vertical Sync Lock
The Vertical Sync (VS) Lock status indicates the state of the ADC's PLL with respect to the incoming
vertical sync. In order to digitize accurately, the PLL must be synchronized (that is, be locked) to the
incoming video VS. Typically, the application first verifies the VS lock condition before starting an
acquisition sequence.
The Sapera status value is CORACQ_VAL_SIGNAL_VSYNC_LOCK.