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Equipment Discussions >> Equipment

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tom77
journeyman


Reged: 09/23/13

Need help with encoders on G-11 new
      #6327450 - 01/22/14 12:29 AM Attachment (7 downloads)

Hello-

Thanks in advance for any help on this topic.

I purchased a Sky Commander XP4 DSC to use with my Losmandy G-11. The RA and DEC never registered any movement, and it was recommended that I use the cable from Losmandy's DSC kit. I'm waiting to see if anyone has one for sale, but I wanted to see if anyone understands the wiring. Any takers?

The cable supplied with my DSC has 4 color wires (black-yellow-green-red). The S1-512 encoders on my G-11 have 6 pins. What color wires go to what pins in the encoders? I attached a rough sketch.

I'm thinking of replacing the jack on the cable that came with the DSC if I could just get the right color wire-to-pin order. Thanks for the help.


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jrcrillyAdministrator
Refractor wienie no more
*****

Reged: 04/30/03

Loc: NE Ohio
Re: Need help with encoders on G-11 new [Re: tom77]
      #6327462 - 01/22/14 12:37 AM

Here's the easy way - $5 ea. from Sky Engineering.

http://www.skyeng.com/thumbnails/P1010106.htm


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hottr6
Carpal Tunnel
*****

Reged: 06/28/09

Loc: 7,500', Magdalena Mtns, NM
Re: Need help with encoders on G-11 new [Re: tom77]
      #6327868 - 01/22/14 09:05 AM

Quote:


I purchased a Sky Commander XP4 DSC to use with my Losmandy G-11. The RA and DEC never registered any movement, and it was recommended that I use the cable from Losmandy's DSC kit.




Cannot help directly, but may be able to add to the information pool.

I use both Losmandy and JMI encoders with JMI's NGC computer. The JMI and Losmandy encoder cables are identical and can be interchanged. Both cables also plug into a NEXUS when working with SkySafari.

I know nothing about the Sky Commander; I am surprised that it uses a wiring protocol different to Losmandy and JMI. Are you sure your encoders work?


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Geo.
Carpal Tunnel
*****

Reged: 10/01/08

Loc: Upstate NY
Re: Need help with encoders on G-11 [Re: hottr6]
      #6328065 - 01/22/14 11:00 AM Attachment (4 downloads)

A 6 pin jack is the RS232 port the encoders usually need an 8 pin (RJ-45) jack.

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Ed Wiley
scholastic sledgehammer


Reged: 05/18/05

Loc: Kansas, USA
Re: Need help with encoders on G-11 new [Re: Geo.]
      #6329376 - 01/22/14 09:07 PM

What kind of encoders do you have on the G11? Mine are Losmandy and I have never had any problem using them with the Sky Commander on either my G11 or my G8.

Ed


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Raginar
Post Laureate
*****

Reged: 10/19/10

Loc: Rapid CIty, SD
Re: Need help with encoders on G-11 new [Re: jrcrilly]
      #6329672 - 01/23/14 12:19 AM

+1. You can actually email the Sky Engineering guy and he'll tell you... I was asking the same question a few months ago with my Mi-250 and he's totally willing to help you out.

Chris


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tom77
journeyman


Reged: 09/23/13

Re: Need help with encoders on G-11 new [Re: Raginar]
      #6331215 - 01/23/14 06:37 PM

Thanks for the help everyone. I was hoping to rewire/replace the jack that came with my DSC, but this is a bit more complicated than I had imagined. I understand the sequence of the 4 wires (thank you George), but my encoders have 8 contact points (i.e., 8 possible destinations for 4 cables). Should I start in the center ? Left? Right? I will contact the manufacturer and post the solution when I find it. Thanks

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tom77
journeyman


Reged: 09/23/13

Re: Need help with encoders on G-11 new [Re: tom77]
      #6331218 - 01/23/14 06:39 PM

Correction: my encoders have 6 contact points, not 8.

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