Unless someone replaced the ERS board with a different one, the machine should communicate using either the 20ma current loop or RS232.
20 ma was used by the type 33 teletype. The type 43 could go either way.
The AMP connector is a round 8 pin reverse sex and can be found at Newark Electronics and such.
Pins 1,2,3,4 and 5 were used for 20 ma.
Pins 5(shield connected at one end only), 6, 7, and 8 are used for RS232. Baud rate is set on the ers board using DIP switches 1,2,3 and 4. Remove the large rectangular connector on the ers board and let it hang for Rs232.
I usually use PROCOMM, or EZ-UTLS from BPT to comm with the machine.
Typically use 8 dat bits, 2 stop bits, no parity and X on Xoff enabled.
Machinemanuals.net has books on CDrom for this machine as well as a comm kit with cable and software.
George W. |