Chris Lord posted:Adrian! posted:gunrunnerjohn posted:Track power MUST be provided to the channel under test or it won't generate the DCS signal. If you're seeing the DCS signal on a TIU output, that channel is powered.
Actually if you have voltage on the aux power in, and no channel power the packet still comes out... I figured this out like a day ago.
Isn't that the definition of passive mode?
Sort of. The channel will output a WD signal only when power is first applied to a channel, and not again until a power cycle on that channel. Truthfully, I never checked to see if the signal was coming out with just aux power, but it's an interesting tidbit.
FWIW, the tester should work exactly the same, connect to the port and you'll see a signal. The filter allows the DCS signal to pass, so it's pretty much transparent whether there is 60hz to filter or not.
