Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: Chaoticone on February 25, 2008, 10:14:51 PM

Title: Looking for pinout on litton encoder.
Post by: Chaoticone on February 25, 2008, 10:14:51 PM

Hey everybody,
     Does anybody happen to know the pinout for a Litton encoder. I have attached a picture to help. 

Brett

Title: Re: Looking for pinout on litton encoder.
Post by: Chip on February 26, 2008, 12:27:21 AM

Hi, Brett

If you could make it just a little bigger the whole wild world could see it.

If you'd clean it up a little it'll probably work one more time, (electrical contact cleaner).

Chip

Edit: Color code is probably, Blk Gnd, Red Pos, White A, Blu B, Grn Sig Gnd maybe Index is there a index ring on the disk ?

I'll give you a call tomorrow.

Title: Re: Looking for pinout on litton encoder.
Post by: Chaoticone on February 26, 2008, 09:12:25 AM

Thanks Chip,
     A q-tip and a spin revealed an index count.  :)

Brett

Title: Re: Looking for pinout on litton encoder.
Post by: Chaoticone on February 26, 2008, 11:19:14 PM

I got the encoder all figured out  :). Not certain which is A and B channel yet, but will know soon. A friend suggested I look up the data sheet for the chip and it cleared it all up. This is a great link to a wealth of info.   http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339N.shtml

Quote

Color code is probably, Blk Gnd, Red Pos, White A, Blu B, Grn Sig Gnd maybe Index is there a index ring on the disk ?

Chip, as far as I know this is correct. Not certain which is A and B channel yet, but will know soon. Green is the index pulse.

Brett

Title: Re: Looking for pinout on litton encoder.
Post by: Chip on February 27, 2008, 12:12:56 AM

Hi, Brett

You'll no pretty quick if you have it backwards, Your Gecko will trip pretty quick after reset.

Chip