Allied Vision Technologies MF-145B2 Manuel d'instructions télécharger pdf (Page 99)

Controlling image capture

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 amount of grabbed images to the FIFO size.

9.5 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. The camera captures an infinite series of images. This operation can be quit by

deleting the “0” bit.

9.6 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 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.

ter-camera latency is described in chapter 9.7.

e following screenshot sho

example of FirePackage (version 1V51 or newer):

and, which stops all cameras connected to the same IEEE-1394

ey down while clicking on <Write>.

broadcast One_Shot” in the same way, which forces all connected

Th ws an example of broadcast commands sent with the Firedemo

Line 1 shows the broadcast comm

bus. It is generated by holding the <shift> k

ne 2 generates a “Li

cameras to simultaneously grab one image.

Figure 59: Broadcast One_Shot

MARLIN Technical Manua

Page 99

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 182 183

Pas de commentaire

Allied Vision Technologies MF-145B2 Manuel d'instructions Page 99