X64-AN Quad User's Manual
Theory of Operation
55
Start of Odd Field
The Start of Odd Field event is only available for interlaced scan cameras. There is a Start of Odd
Field event at the beginning of each incoming odd field transferred from onboard memory into PC
memory. The Sapera event value is CORACQ_VAL_EVENT_TYPE_START_OF_ODD.
Start of Even Field
The Start of Even Field event is only available for interlaced scan cameras. There is a Start of Even
Field event at the beginning of each incoming even field transferred from onboard memory into PC
memory. The Sapera event value is CORACQ_VAL_EVENT_TYPE_START_OF_EVEN.
End of Frame
The End of Frame event is generated when the last image pixel is transferred from onboard memory
into PC memory. The Sapera event value is CORACQ_VAL_EVENT_TYPE_END_OF_FRAME.
End of Field
The End of Field event is only available for interlaced scan cameras. There is an End of Field event
when the last field has been transferred from onboard memory into PC memory. The Sapera event
value is CORACQ_VAL_EVENT_TYPE_END_OF_FIELD.
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 onboard into PC 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 onboard memory into PCI memory. The
Sapera event value is CORACQ_VAL_EVENT_TYPE_END_OF_EVEN.
End of Transfer
The End of Transfer event is generated at the completion of the last image being transferred from
onboard memory into PC memory. To complete a transfer, a stop must be issued to the transfer module
(if transfers are already in progress). If a transfer of a fixed number of frames was requested, the
transfer module will stop transfers automatically. The Sapera event value is
CORACQ_VAL_EVENT_TYPE_END_OF_TRANSFER.
End of Line
The End of Line event is generated at the end of each line transferred from onboard memory into PC
memory. Note that this event should only be used with very slow line rates. Standard RS170 cameras,
