Switch Sw3/Sw4 Configuration - GE Multilin D400 Instruction Manual

CHAPTER 3: SETTING UP COMMUNICATION CARDS

Switch SW3/SW4 configuration

Function Pin 6 Signal
DTE (default) DSR Input
DCE DTR Output
IRIG-B Enable Ground
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
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.
Table 8: RS-232 Card Switch SW3/SW4 Settings
SW3/SW4 Positions
1 2
OFF OFF ON
OFF ON OFF
OFF OFF OFF
The switch positions are listed for:
• DTE (Pin 4 DTR Output to DCE and Pin 6 DSR Input from DCE). See Figure 12.
• DCE (Pin 4 DTR Input from DTE and Pin 6 DSR Output to DTE). See Figure 13.
• IRIG-B Enable (on Pin 4) and Ground (on Pin 6). See Figure 14.
Figure 12: Switch SW3/SW4 configuration for port DTE (default)
O N
1 2 3
Figure 13: Switch SW3/SW4 configuration for port DCE
ON
1 2 3
Figure 14: Switch SW3/SW4 configuration for port IRIG-B)
ON
1 2 3
Pin 4 Signal
3 4
OFF DTR Output
OFF DSR Input
ON IRIG-B Output
4 5 6 7
4 5 6 7
4 5 6 7
GE INFORMATION
SW3/SW4 Positions
5 6 7
OFF ON OFF
OFF OFF ON
ON OFF OFF
8
8
8
8
OFF
OFF
OFF
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