Gemini-2 and Gemini-1 Telescope Mount Controller
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Gemini 1 Serial Cable wiring
The Gemini 1 Serial Cable Losmandy Part number "GCC" is on Losmandy Web site accessories page about 3/4 way down.   I recommend you purchasing these cables instead of making your own.
The Gemini 2 Serial Cable Losmandy Part number "GCC Gem 2" is on Losmandy Web site accessories page about 3/4 way down.  I recommend you purchasing these cables instead of making your own.
If you decide to build your own, here is another wiring diagram courtesy of Losmandy.

DB9 for G1          RJ22 for G1
short pins 7 & 8 and 4 & 6 on RS232 connector together.

Follow the color codes for the Gemini 1 RS232 cable wiring
The telephone plug shown should be a RJ22 which is narrower than the standard RJ12 plug.
The RS-232 connector is a Female DB-9 connector.



Gemini 2 Serial Cable wiring Mode 1 and 2

DB9 for G1      
short pins 7 & 8 and 4 & 6 on RS232 connector together.

Follow the color coded for Gemini 2 RS232cable wiring
This is for mode 1 and 2 jumper setting (see Serial Port Modes)
One way to do this is to use a DB9-F to RJ12 adapter (see drawing)
Notice the two center pins of the RJ12 plug are connected together,
and get routed to pin 5 of the RS232 DB9F plug.
The RS-232 connector is a Female DB-9 connector.
The telephone connector is a RJ-12  6C6P connector.



Gemini 2 Serial Cable wiring Mode  3

DB9 for G1    

Follow the color coded for Gemini 2 RS232cable wiring
This is for mode 3 jumper setting (see Serial Port  Modes
The RS-232 connector is a Female DB-9 connector.
The telephone connector is a RJ-12 connector.
Please note that the GPS supplied by Losmandy for the Gemini-1 will not work on the Gemini-2. It can be modified by cutting off the connectors and putting on the correct ones. You can search the user groups for these instructions. I don't have either version, so no instruction are given here .
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