Switch Sw1/Sw2 Configuration - GE Multilin D400 Instruction Manual

Switch SW1/SW2 configuration

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Switches SW1 (for Port 2) and SW2 (for Port 1) control the signal type of the RS-232 port.
Each switch contains ten switch positions that can each be set to position ON or OFF to
select the appropriate port option.
Table 7: RS-232 Card Switch SW1/SW2 Settings
Port Option
DTE (default) - see Figure 10
DCE - see Figure 11
+5 V (320 mA) isolated source
*Use DTE or DCE settings as appropriate
DCD output is not supported in DCE mode.
If configured with SW1/SW2, each +5 V is output on Pin 1 of rear DB9 connector and is
independently isolated and fused with a PTC (positive temperature coefficient) resettable
fuse at 320 mA at 65 °C.
Figure 10: Switch SW1/SW2 configuration for port DTE (default)
ON
1 2 3 4
Figure 11: Switch SW1/SW2 configuration for port DCE
ON
1 2 3 4
GE INFORMATION
CHAPTER 3: SETTING UP COMMUNICATION CARDS
SW1/SW2 Switch Position
1 2 3 4
ON OFF ON OFF ON
- OFF OFF ON
* ON * *
5 6 7 8 9
5 6 7 8 9
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
5 6 7 8 9
OFF ON OFF ON
OFF ON OFF ON OFF
* * * * *
10
10
10
OFF
ON
*