Steve Blackmore wrote: > > > Hi Jon > > Encoder is connected to a couple of UA9637ACP differential line > receivers. I'm putting A+ A-, B+ B-, I+ I- in and getting A, B, I out at > 3.5V, should I connect the resistors on the outputs of the line > receiver? > > Oh, my! This is getting messy, for sure. Possibly you do need the pullups on the 9637 outputs. You can certainly try that. Also, do you have terminators on the differential lines coming into the receiver? If not, there will be a lot of ringing on every state transition. I usually put a 120 Ohm resistor across the inputs of the line receiver.
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