GTCO CR 1212 - Users Guide - Manual (Page 11)

CR 1212 11
RS-232C Signal Levels
NOTE: The source is the EIA Standard RS-232C: Interface between Data Terminal
Equipment and Data Communication Equipment Employing Serial Binary Data
Interchange, by the Engineering Department of the Electronics Industries Association
(Washington, D.C.: EIA, 1969).
Section B: Baud Rate
The CR 1212 is available with 9600 baud or Autobaud. The standard setting is 9600 baud,
unless Autobaud is specifically ordered.
Autobaud automatically matches the tablet baud rate to the host baud rate. The tablet
supports 9600, 4800, 2400 and 1200 baud. With Autobaud, you must send an ASCII space
(SP) to the tablet just after starting it. The tablet uses this character to identify the host
baud rate. The tablet then sets its baud rate and issues an ASCII acknowledge (ACK) to the
host.
Section C: Communication Protocols
The CR 1212 communication protocols are: