I did some digging and I think the Gavita 1700e uses a 0 - 11.5 volt dimming signal and not the standard 0-10 volt.
So I suspect the lights would not operate at full intensity with a 10 volt "High" signal.
I suspect some sort of converter would be required to change the analog 0-10v to a 0-11.5 volt signal. Might be just as simple as a little op amp circuit. Aside from that it would likely be a matter of isolating which pair of conductors is required off the connector?
It would be easier if one had access to the gavita controller to reverse engineer the signal for dimming. They do have two different dimming systems, "Repeater Bus" and "Single Bus", I am not sure if they both use the same 0-11.5 volt signal. If I were confronting this issue personally then I would be trying to get some information from Gavita support, not sure how helpful they would be but I suspect that someone has asked this question before.