Datapath Vision800X - Manual (Page 5)

If you are connecting more than two expansion chassis together, you can continue to expand the gen lock
link to further downstream chassis by fitting a H-link board into the first slot of the first expansion chassis
and by connecting a gen-lock cable from the S-Link board directly into the H-Link card in the expansion
chassis, whilst at the same time connecting the H-Link output to the next Image4 graphics card. See the
following illustration as an example. In this way you can create very large systems and maintain the gen
locking capability between all Image4 graphics cards.
In order to complete the gen-locked link, you will need to connect the output of the S-Link board in the
downstream expansion chassis back into the next Image4 graphics card in the chain, as per the following
image. Note again that the cable supplied with the S-Link board is longer than those supplied with the
Image4 graphics card in order to cover the extra distance.
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Fig.6