KeyAT-5 Keyboard Port Adapter
L3 Systems
3
11/14/2011
Serial Port Connector
The port is configured as a DCE device. On the 9
pin DB-9S connector, it transmits data on pin 2
and receives data on pin 3. No other RS-232 signal
is required for it to operate.
Pin 6
Pin 9
Pin 1
Pin 5
Pin Signal
KeyAT-5 Function
1 DCD
Not Used
2 RX (Receive) from KB232
RS-232 Output
3 TX (Transmit) to KB232
RS-232 Input
4 DTR
Not Used
5 Signal Ground
Ground
6 DSR
Not Used
7 RTS
Not Used
8 CTS
Not Used
9 RI
Not Used.