MultiConnect Adapters
Multi-Tech Systems, Inc. Quick Start Guide
7
Pin Functions of the Female End Connector
The following tables explain the pins functions.
External Power
With RS-232 Power
Through Pin 6
Signal
I/O
Signal
I/O
Pin 1 CD
O
Pin 1 CD
O
Pin 2 TX
O
Pin 2 TX
O
Pin 3 RX
I
Pin 3 RX
I
Pin 4 DTR
I
Pin 4 DTR
I
Pin 5 GND
-
Pin 5 GND
-
Pin 6 DSR
O
Pin 6*
Power
Pin 7 CTS
I
Pin 7 CTS
I
Pin 8 RTS
O
Pin 8 RTS
O
Pin 9 RI
O
Multi-Tech
MultiConnect
Female Connector
Pin 9 RI
O
Warning:
When supplying
power to the RS-232
connector, make
sure the power does
not feed the DTE
device.
*Pin 6 Input Power and Power Consumption
@ 5V DC: Typical 190mA Maximum 245mA
@ 10V DC: Typical 100mA Maximum 120mA
@ 15V DC: Typical 69mA Maximum 83mA
@ 20V DC: Typical 54mA Maximum 65mA
@ 25V DC: Typical 45mA Maximum 55mA
Pin Functions of the Male End
RS-232
Signal
I/O
Pin 1 CD
I
Pin 2 RX
I
Pin 3 TX
O
Pin 4 DTR
O
Pin 5 GND
-
Pin 6 DSR
I
Pin 7 RTS
O
Pin 8 CTS
I
Pin 9 RI
I
Multi-Tech
Male Connector
