BNC-2110 data passing issues

[knapkerd]

I am trying to create a digital signal so that I can test a part of my code that will read in this signal during the actual data acquisition.  I have two laptops (both Dell Latitude D430) and two BNC-2110 devices.  I am trying to pass a counter from one of the boards to a digital input on the other board.  I am using a program to generate the signal and another to recieve the signal (both attached).  When I try passing the counter from one of the boards to itself (connecting cntr1out with one of the p0.x inputs) the signal looks like I want it to (attached as "signal=pics").  However, when I try passing the data from one board to the other (cntr1out from one BNC-2110 to the p0.x of the other board) then the signal does not look correct (attached as "signal=pics").  I have checked the Measurement & Automation Explorer to ensure that all of the settings are the same for both boards.  I am also using the same version of Labview.  I have switched various compontents (wires, BNC-2110, etc.) and either board can pass the data to itself correctly but passes it incorrectly to the other board.

I do not have any ideas of what else to try.  Can anyone tell me what I am doing wrong?  Any help would be greatly appreciated.

Thanks.

--Robert

[TCPlomp]

Have you connected the ground of the digital ports?

Ton

[knapkerd]

No I have not.  I have almost no experience with data aquisition hardware.  I see 3 D GND, which I assume are digital grounds.  How exactly do I connect these to the digital inputs?  Do I have two wires going into the same digital port?

Sorry for such a basic question.  And thanks for the reply.

--Robert

[TCPlomp]

Be aware that you can wreck your hardware if you don't know what you do!

But a signal without a grond is an unknown signal.
Between the two computers there should be two physical wires, Ground and Signal.

Ton

[knapkerd]

Thanks for the help TonP.  I think we will try connecting the grounds carefully.

--Robert