Casio DT-930 - Manual (Page 55)

E-55
Serial Connection of Multiple Satellite Cradles
You can use optional 6-6 pin Modular Cables (DT-888RSC) to connect up to 7 Satellite
Cradles in a serial configuration. This configuration makes it possible to exchange data
between multiple Handheld Terminals and a personal computer via the cradles.
Connections
Connect C-OUT on the Satellite Cradle nearest the
host computer to C-IN on the next Satellite
Cradle that you next want to connect to.
RS-232C cable
To host computer
6-6 pin Modular
Cable (DT-888RSC)