Agilent Optical Encoder for Sale

[Algar_emi]

I have 7 Agilent optical shaft encoders. They are brand new and never used. I bought them to convert the resolution of 7 encoders that I had. They are perfect to fit on 1/4 inch shaft of a volume step attenuator for example or using a shaft, the get a nice volume encoder with hight resolution.

I'm asking 10$ each. Great buy. I can make a deal if some one get all seven of them.

Model: HEDS-5540-F06
Specs: 256PPR resolution, Index output, Fit 1/4 inch shaft.
Output: TTL or CMOS compatible, 5V supply
Documentation available.

They were bought from Newark and cost $38.06 each!

They are complet with the little allen key to screw them on the shaft.

Bye....

[millwood]

Originally posted by Algar_emi
I have 7 Agilent optical shaft encoders.

optical encoders. they were my life and soul in my prior life. and supported me for a few (really) good years. I had a business manufacturing and marketing optical decoder / encoders to steel mills. Those are encoders that can be field programmed to generate the desired code. and I still own a few patents in that business, .

we sold them well over $1k a piece.

$10 would be a good price for them.

[Algar_emi]

Hi Millwood. Thanks for your comment. I got a good question for you. Can you tell me if it is possible to convert the resolution of an encoder from, let say 256PPR to 100PPR using an electronic circuit?

I know it can be done because, for example USDigital, sell such a converter.

I tried to used just divider but the result didn't work. The number of pulse was ok but the pulses phases was all mix up when turning from CW to CCW and back. Mind buggling

Maybe you have an answer for me

Thanks in advance...

SB

[millwood]

Originally posted by Algar_emi
Can you tell me if it is possible to convert the resolution of an encoder from, let say 256PPR to 100PPR using an electronic circuit?

SB

you can use a divider for such purposes (I am assuming that we are talking about straight incremental encoders). a divider is essentially a pulse eater. But you have to assume that you are turning at a constant velocity. and as you turn it backward, the divider needs to be told of that. and a straight incremental encoder is not capable of that.

[Algar_emi]

Yes. That is problem. I`m talking about an encoder used for human interface. The velocity is not constant, so the Pulse period change. One problem also that I found is that the divider pulse output duty cycle is not perfectly 50% as the original encoder output. Any way to correct for that?

Thanks...

SB

[Peter Daniel]

Hi Sylvain,

What exactly is needed to make them usable, just a shaft, or bearing as well? Can you post the picture from the other side?

I was wondering if similar part could be converted into a working encoder, without the need for buying a complete unit at twice the price?

[Algar_emi]

Sorry guys. Sold to a gentleman in Oregon. Very nice down there by the way. I was there before Chritsmas and liked it very much.

Thanks for your interest.

SB