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.

DB9 for G1          RJ22 for G1

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      

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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