We would like to use Pin01 (Trigger input 1) in the USB interface to acquire a sync signal from an external electronic circuit. We have found a voltage difference of 3 V between pin01 and pin37 (ground). Is that difference ok? Shouldn't that difference be zero when unplugged?
Thanks!
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- Wed Jul 29, 2009 7:20 pm
- Forum: BioSemi Hardware
- Topic: voltage difference between pin1 and pin37
- Replies: 1
- Views: 8140