| ??? 02/29/08 14:28 Read: times |
#151668 - 'differential' is more than obe thing Responding to: ???'s previous message |
I'm interfacing to old quadrature encoder with differential outputs. Can I use the MAX485 to read the differential channels?
Any other suggestions for line receiver ic with 2 channels? for encoders 'differential' usually means an AB encoder. RS485 is another form of differential. I am 99% sure you misunderstand something. For that Agilent (used to, have they sold them off?) have quadrature decoders which makes everything a breeze. DO NOT fall in the trap of using the old wifes tale of a=clock, b=direction, it fails by one count in (do not hang me on the number it is long ago) 2 of 16 reversals. I have no datasheet for the encoder but the wiring diagram is marked on the encoder itself. have you tried to find the manufacturers website, if you can, give a link, if not, sketch the diagram and post it. Erik PS it is, of course possible you have a type of encoder I have never heard of, but you do say 'quadrature' so I thinh I'm right. |
| Topic | Author | Date |
| Quadrature Encoder interfacing | 01/01/70 00:00 | |
| Use interrupt | 01/01/70 00:00 | |
| it does NOT work | 01/01/70 00:00 | |
| 'differential' is more than obe thing | 01/01/70 00:00 | |
| Why does clock/direction fail ? | 01/01/70 00:00 | |
| I got it ..... | 01/01/70 00:00 | |
| a quadrature detector .... | 01/01/70 00:00 | |
| Possibly differential | 01/01/70 00:00 | |
| if so, then datasheet would be needed or | 01/01/70 00:00 | |
| Datametrics | 01/01/70 00:00 | |
| need that scope picture (description) | 01/01/70 00:00 | |
| Decoder timing diagram | 01/01/70 00:00 | |
| Scope Waveforms | 01/01/70 00:00 | |
| 485 will be fine, I suggest LT1785 | 01/01/70 00:00 | |
| My original question | 01/01/70 00:00 | |
| Encoders With Differential Outputs | 01/01/70 00:00 | |
| IC Chip Decoder Solutions | 01/01/70 00:00 | |
Project details | 01/01/70 00:00 |