Pike Technical Manual
V5.2.0
215
Controlling image capture
Multi-shot
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
on page 215), 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 captured,
it can be cancelled by resetting the flag. The same result can be achieved by set-
ting the number of images to
0
.
Multi-shot
can also be combined with the external trigger in order to grab a cer-
tain 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.
ISO_Enable / free-run
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.
Asynchronous broadcast
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 simul-
taneously - 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 cam-
eras in the range of 125 μs.
Inter-camera latency is described in Chapter
