Re: [CAD_CAM_EDM_DRO] Gecko G340 Input Option Header Setup

andyolney wrote:

>I am confused on the input option for a Gecko G340. I am intending
>to connect +5 VDC to the common terminal (12) and use the parallel
>port pins as sinks. I believe I should set the jumpers to "COMMON
>GROUND" as described below in an excerpt from the G340 manual. I
>know this has been discussed before, but the word COMMON is
>confusing me. Can anyone confirm for me that "COMMON GROUND" is the
>correct setting? Thanks! Andy
>
>

No, you want the other option:

>If the G340 inputs are driven by open collector transistors or
>standard TTL gates, move the 4 jumpers on the header so that it
>looks like the COMMON +5VDC setting.
>
>

This is also the one that works best, as the parallel port outputs work
better at sinking
current to ground than they do at sourcing current.

Jon