Allied International AVT OSCAR V2.4.0 Manual Do Utilizador

 OSCAR Technical Manual V2.4.0

115

Setting multi-shot and entering a quantity of images in Count_Number in 
the 61Ch register enables the camera to record a specified number of images.

The number is indicated in bits 16 to 31. If the camera is put into 
ISO_Enable mode (see Chapter 

 on page 115), this flag 

is ignored and deleted automatically once all the images have been recorded.

If multi-shot mode is activated and the images have not yet all been cap-
tured, it can be cancelled by resetting the flag. The same result can be 
achieved by setting the number of images to 0.

Multi-shot can also be combined with the external trigger in order to grab a 
certain number of images based on an external trigger. This is especially 
helpful in combination with the so-called deferred mode to limit the number 
of grabbed images to the FIFO size.

Setting the MSB (bit 0) in the 614h register (ISO_ENA) puts the camera into 
ISO_Enable mode or Continuous_Shot (free-run). The camera captures an 
infinite series of images. This operation can be quit by deleting the 0 bit.

The camera accepts asynchronous broadcasts. This involves asynchronous 
write requests that use node number 63 as the target node with no 
acknowledge.

This makes it possible for all cameras on a bus to be triggered by software 
simultaneously - e.g. by broadcasting a one-shot. All cameras receive the 
one-shot command in the same IEEE 1394 bus cycle. This creates uncertainty 
for all cameras in the range of 125 µs.

Inter-camera latency is described in Chapter