How to connect unbalanced I/Os to C24 ?

[ste72]

Hi,
who could suggest the best way to connect unbalanced connectors through DB25 connectors (ins & out) with control24 ? Is it a better choice to connect "GND" AND "-" , to leave "GND" not connected or to leave "-" not connected ?

What's the best way to reduce noise ?

regards
Ste

[ste72]

?

[Buzzz]

You should connect the - pin and the ground pin of the C24 together. If you let the - pin float it will pick up noise, cause crosstalk, etc. This applies to both the inputs and outputs of the C24.

[ste72]

hi, i would connect + to "hot" and - to "cold" leaving gnd of balanced connection unconnected... what do you think ? connecting - and GND toogether it generates lots of noise.

regards
Ste