Sierra Wireless DART 200 CDPD Modem Pin Number Name Function Direction, Table C-1. Pin functions

DART 200 CDPD Modem User’s Guide C Charts and Diagrams

The pin functions for pins labeled in Figure C-2 are listed in Table C-1

Table C-1. Pin functions

Pin Number	Name	Function	Direction
1	DCD	Carrier Detect	To DTE
2	RXD	Receive Data	To DTE
3	TXD	Transmit Data	From DTE
4	DTR	Data Terminal	From DTE
		Ready
5	GND	Signal Ground	Both
6	DSR	Data Set Ready	To DTE
7	RTS	Request to Send	From DTE
8	CTS	Clear to Send	To DTE

Table C-2 lists the RS-232 signal interference specifications.

Table C-2. RS-232 signal interface

Direction	Logical	Voltage Level	Load	Status
	Condition
Input (From DTE)	One	-3 to -25 VDC	5K Ohm	OFF, Mark
	Zero	+3 to +25 VDC	5K Ohm	ON, Space
Output (To DTE)	One	-5 to -8 VDC	3K Ohm	OFF, Mark
	Zero	+5 to +8 VDC	3K Ohm	ON, Space

Sierra Wireless, Inc. C-2