janner_10
Lifetime Supporting Member
A project using the above landed on my desk. Attached are several OB16 cards.
With any output turned off, a multi-meter still shows 24v to GND, although a test lamp wont illuminate until you force the output on.
We have about 5 of these cards on the shelf and all are doing the same thing.
Whilst it doesn't affect our application, it would make fault finding a bit of a nightmare on site should the need arise.
Never seen this before - anyone else noticed?
With any output turned off, a multi-meter still shows 24v to GND, although a test lamp wont illuminate until you force the output on.
We have about 5 of these cards on the shelf and all are doing the same thing.
Whilst it doesn't affect our application, it would make fault finding a bit of a nightmare on site should the need arise.
Never seen this before - anyone else noticed?
