Chapter 2 – Installation
Multi-Tech Systems, Inc. Serial-to-Serial Device Server User Guide (S000354C)
10
Pin Functions of the Female End Connector
The following tables explain the pin functions.
External Power
Powered
Through Pin 6
Signal
IN/OUT
Signal
IN/OUT
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
*Pin 6 Input 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
Warning:
When supplying power to the RS-232 connector, make sure the power does
not feed the DTE device.
Pin Functions of the Male End
The following table explains the pin functions.
RS-232
Signal
IN/OUT
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
