Matrox Multi Spécifications télécharger pdf (Page 27)

Grabbing simultaneously from different boards 27

In addition, you should set the rotary switch of each PC/104-Plus board to a

unique setting in the stack. Setting the rotary switch dedicates a group of PCI

signals to the board in the stack: clock, request grant, ID select, and interrupt

signals. It is recommended that the first board installed (the board closest to the

Host CPU board) be configured to 0, the second 1, and so on. The table below

shows the recommended switch setting for each board, as well as the corresponding

setting for the dedicated signals.

If you are installing an additional Matrox Meteor-II board on a Matrox 4Sight-II

unit, the board already installed has the setting fixed at 0; therefore, the setting

for the additional board must be something other than 0 or 4.

Grabbing simultaneously from different

boards

You can simultaneously grab images from cameras attached to different

Matrox Meteor-II boards; however, the number of cameras from which you can

simultaneously grab is determined by the PCI bandwidth available in your

computer.

PCI bandwidth

requirements

Matrox Meteor-II /Multi-Channel has a low susceptibility to PCI bus latency due

to its 4 Mbytes of video transfer memory. In addition, sustained PCI-transfers to

memory require the use of a high performance PCI core-logic chipset, such as the

Intel 820, 840, 850, 860, or E7505. If a high performance chipset is used with a

Matrox Meteor-II /Multi-Channel board, you should not have any PCI

Switch position Board position Interrupt Request grant ID select

0 or 4 1 Interrupt A 0 0

1 or 5 2 Interrupt B 1 1

2 or 6 3 Interrupt C 2 2

3 or 7 4 Interrupt D 2 3

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 69 70

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Matrox Multi Spécifications Page 27