GE 994-0089 user manual Switch SW3/SW4 Configuration, DTE default

GE Energy

DTE (default)

A

B

1 2

3 4 5

DCE

A

B

1 2

3 4 5

Switch SW3/SW4 Configuration

Switches SW3 (for Port 2) and SW4 (for Port 1) control the signals on Pins 4 and 6 of the RS-232 port. Each switch contains four switch positions that can each be set to ON or OFF to select the appropriate function for the port option. See illustrations below showing the switch positions for each setting.

RS-232 Card Switch SW3/SW4 Settings

Function	Pin 6	SW3/SW4 Positions				Pin 4	SW3/SW4 Positions
	Signal					Signal
		1	2	3	4		5	6	7	8
DTE (default)	DSR Input	OFF	OFF	ON	OFF	DTR	OFF	ON	OFF	OFF
						Output
DCE	DTR	OFF	ON	OFF	OFF	DSR Input	OFF	OFF	ON	OFF
	Output
IRIG-B	Ground	OFF	OFF	OFF	ON	IRIG-B	ON	OFF	OFF	OFF
Enable						Output

D400 Substation Data Manager User's Manual 29