Help with 1600GTO cables


Howard Ritter
 

I’m slowly setting up my new 1600GTOAE (slowly, because there’s no way I could get this thing set up in time to get first light before we leave on a 17-day trip). One thing is a bit ambiguous, though. The GTOCP4 manual indicates that a Y cable from the Dec servos and the RA servos is connected to the MOTORS port on the CP4.

No Y cable was supplied.

Am I correct in thinking that the internal motor and encoder cables from the Dec connector box carry the signals to the board in the bottom of the RA body, and that the external motor and encoder cables I connected from the rear plate of the RA body to the MOTOR and ENCODER connectors on the CP4 carry the signals from BOTH the Dec and the RA motors and encoders, obviating the need for a Y cable? Was the instruction regarding the Y cable written for a different mount?

On p. 17 of the 1600GTO manual, there is a discussion of fishing cables down through the RA body and bringing them out through an access port in the RA rear plate. Am I correct in thinking that the cables being referred to are user-optional cables, like for camera power and data, and not any cables that are part of the 1600 itself?

—howard


M Hambrick
 

If I understand the manuals correctly the Y-cable is not used with the encoder mounts. There should be some cables with DB9 connectors that plug into the RA and Dec motor gearboxes.

Mike


 

Hello Howard,

Congratulations on your new 1600GTO! There is no Y-cable for this mount. You are correct in your thinking about the motor and encoder cables that connect from the backplate to the GTOCP4 control box. The cable discussion on p. 17 refers to user-optional cables, as you deduced.

We hope that you enjoy your new mount.

Clear Skies,
Marj Christen
Astro-Physics
11250 Forest Hills Road
Machesney Park, IL 61115
Phone: 815-282-1513
www.astro-physics.com
Video Tutorials: https://www.youtube.com/astrophysicscorp

-----Original Message-----
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Howard Ritter via groups.io
Sent: Friday, June 10, 2022 6:08 PM
To: main@ap-gto.groups.io
Subject: [ap-gto] Help with 1600GTO cables

I’m slowly setting up my new 1600GTOAE (slowly, because there’s no way I could get this thing set up in time to get first light before we leave on a 17-day trip). One thing is a bit ambiguous, though. The GTOCP4 manual indicates that a Y cable from the Dec servos and the RA servos is connected to the MOTORS port on the CP4.

No Y cable was supplied.

Am I correct in thinking that the internal motor and encoder cables from the Dec connector box carry the signals to the board in the bottom of the RA body, and that the external motor and encoder cables I connected from the rear plate of the RA body to the MOTOR and ENCODER connectors on the CP4 carry the signals from BOTH the Dec and the RA motors and encoders, obviating the need for a Y cable? Was the instruction regarding the Y cable written for a different mount?

On p. 17 of the 1600GTO manual, there is a discussion of fishing cables down through the RA body and bringing them out through an access port in the RA rear plate. Am I correct in thinking that the cables being referred to are user-optional cables, like for camera power and data, and not any cables that are part of the 1600 itself?

—howard


Howard Ritter
 

Thanks for the clarification, Marj.

And I can’t tell you how pleased and impressed I am with the construction and physical presence of the mount. It looks as though my idea of mating it to my old Meade Giant Field Tripod produced not only a match made in (the) heaven(s), but one that looks that way as well. This rig, as you probably saw in the photo I posted a few days ago, looks like it could carry and fire a 155mm field howitzer. Maybe that PlaneWave 20 isn’t out of reach after all…

—howard

On Jun 10, 2022, at 8:19 PM, Marj Christen <marj@...> wrote:

Hello Howard,

Congratulations on your new 1600GTO! There is no Y-cable for this mount. You are correct in your thinking about the motor and encoder cables that connect from the backplate to the GTOCP4 control box. The cable discussion on p. 17 refers to user-optional cables, as you deduced.

We hope that you enjoy your new mount.

Clear Skies,
Marj Christen