D-SUB 15-pin connector pin assignment on CompactDAQ chassis

[janschwochow]

Dear all,

I want to use a CompactDAQ 9172 with a tablet for inflight measurement with a glider aircraft, where accelerations of several ADXL335 are logged to disk. They need a power supply of 5V, which should be available from the D-SUB 15-pin connector of the NI 9172 backplane. Where can I find the pin assignment?

Thanks in advance,

Jan  

[Christoph_D · Accepted solution]

Hello Jan,

if you want to use the D-SUB connector of your cDAQ/cRIO then you find official information in the "CompactRIO Module Development Kit":

NI cRIO-9951 - National Instruments
http://sine.ni.com/nips/cds/view/p/lang/de/nid/14548

I found some inofficial and unconfirmed information which I will cite, perhaps that already helps you:

[...] Pin 4 is 5V and Pin 14 is GND. Be aware though, that there's a danger in accidentally
damaging the backplane in this approach, so we cannot warranty this type of use.

If you just need access to the +5V and gnd lines, a safer option would be to use an NI 9411 module
which uses a regulator from an external power supply to give 5V on the front connector.

Best regards,

Christoph

[janschwochow]

Dear Christoph,

thank you very much for the information.

Jan

[DRod]

How much current can it supply?