L3 Systems KB232 Manual
Text of the manual
L3 Systems, Inc.
Redmond
KB232
PS/2 Keyboard
RS-232 Adapter
Part # SA0008
(Version 3.0)
Field 1 = Terminal emulation:
Simple. TTY, PC. ANSI, or VT
Field 2 = Baud Rate
9600, 4800,2400, or 1200. 9600 is default
Field 3 = Parity
Even, E8, Odd. O8 or No Par (default)
Field 4 = Keyboard LED Settings
1st: “n” =OFF/enabled
“N” = Num ON/enabled. “D” = Disabled
2nd: “c” =
The KB232 PS/2 Keyboard RS-232 adapter allows a
PS/2 style keyboard to be connected to an RS-232
port of a computer or other equipment using RS-
232 communications. This allows the use of a
standard “PC” type keyboard for embedded
applications that only have RS-232 interfaces.
Power considerations
The KB232 receives po
KB232 PS/2 Keyboard RS-232 Adapter
5/19/2007
2
L3 Systems
just one of them. Note that if you disable a Caps
Lock or Num Lock LED, the key still will operate to
modify the characters sent.
The second solution is to use a 9 Volt or 12 Volt DC
power supply to power the keyboard and adapter.
You can attach +9V or +12V power supply by
connecting the plus voltage
KB232 PS/2 Keyboard RS-232 Adapter
L3 Systems
3
5/19/2007
Connections
KB232 RS-232 Serial Port Connector
The KB232 adapter uses a standard RS-232 9-Pin
female “D” connector that can connect directly to a
“PC” computer’s serial port. The KB232 can power
itself and the attached keyboard using active DTR and
CTS signals on pins 4 and 7 of the connecto
