Power Supply and Line driver encoders

Hi,
I'm working on building a 3 axis CNC inspection system. There will be 2 Y axes with one as the slave axis. I plan to use linear encoders on all X, Y and Z axes. For this, I have got the 7i96S and 7i85 Mesa boards. I had two queries regarding the electrical circuits.

• The power supply rating is 5 V. Is a 5V 2A PSU suitable?
• The datasheet for 7i85 says that the RS422 encoders should be terminated with a 120 Ohm resistor and a 26LS32 RS-422 differential receiver. What would the circuit look like in this case? For reference, this is the encoder I plan to use, in the Line Driver model. m.alibaba.com/x/16C29T?ck=pdp

I'm very much new to this, so I apologize if these are very basic queries. I'd really appreciate any insights.

1. Should be OK, just get a good quality one like MeanWell or Delta
2. TTL encoders should work as is with 7i85, so should glass scales rated at 5V, incremental types that is, and both differential and single ended also work on most Mesa cards.

The 7I85 has built in 120 Ohm termination when used is RS-422 (line driver) mode.
no additional termination is needed.

Are the QA, QB, IDX pins on the 7i85 equivalent to the A, B, Z signal in line driver encoders?

kimkar wrote:

Are the QA, QB, IDX pins on the 7i85 equivalent to the A, B, Z signal in line driver encoders?

Yes.
QA = quadrature signal, A channel
IDX = index signal