Technical Support wrote:
That is odd. The trigger circuit in the CC is in a constant state of ready. There is no off or on or sleep mode. This is a different circuit than the test buttons and LCD screen, which do have a sleep mode.
Does this happen with other devices in the hot shoe, or with the CC in another camera? Are you connecting only via the foot or only via the PC cord? are you using anything else in the hot shoe, like a speedlite, then connection to the speedlites PC terminal?
The CC triggers without issue with my D2Xs, D700, D300 and my D200.
I am currently only using the hotshoe to sync the CC to my D1x