Re: DC503 Not Working

Dave Daniel

I’ve been fooliwing this thread but not really paying close attention.

I assume that you’ve tried the DC-503 in all mainframe slots?

On Aug 11, 2020, at 04:29, Stephen <stephen.nabet@...> wrote:

On Mon, Aug 10, 2020 at 09:24 PM, Dave Daniel wrote:

I would make six measurements with an oscilloscope:

- Measure the signal of pin 6A at the backplane where the connector is
soldered to the motherboard with the extender disconnected

- measure the same signal at the connector contact (front side)

- with the extender inserted, make the same two measurements

- with the extender inserted, measure the signal on the extender contact on
the plug-in end

- measure the signal at the plug-in itself (“after” the extender)

I will certainly do that and report back.
Thank for the suggestion, Dave.

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