CSAT3 control box has been modified with an RS232 to RS422 transceiver to allow for a longer transmission line at 19.2 kbps
Using USConverters.com device, however, any comparable converter should work.

The CSAT3 has to be configured in the Unprompted mode.

CSAT3 is set to the following configuration with the corresponding commands:
rs 1 - AA55 synchronization code
br 1 - Baud rate 19.2 kbps
ri 1 - RTS independent
& - Unprompted mode
Ae - 60 Hz Execution Parameter/Acquisition rate.

Settings are saved to EEPROM by the 'sr2718' command. 
*Do note that a hardware jumper needs to be set in the electronics box. Refer to manual for details.