GE 994-0089 User Manual

Page of 92
 GE 
Energy 
 
D400 Substation Data Manager User's Manual  
27
 
3.3 RS-232 
Adapter 
The RS-232 Adapter (GE Part No. 520-0207) is a standard RS-232 serial I/O adapter card 
that plugs into any serial communication slot (slots 1 through 8) on the D400. It contains 
two independently isolated RS-232 serial ports (Port 1 J3 and Port 2 J2) each with a DB-9 
connector. 
See section “4.3 RS-232 Connections” for typical cable connections. 
Configuration Options 
The RS-232 card supports the following configuration options on each port: 
•  DCE (Data Communications Equipment) – as a peripheral 
•  DTE (Data Terminal Equipment) – as a PC 
•  +5 V (320 mA) output 
In addition, the RS-232 card is configurable to provide an IRIG-B signal (on pin 4) and 
Ground (on pin 6). 
The signal type and pin options for each port are selectable via two sets of switches on 
the RS-232 card: 
•  Port 2 (J2) is configured by switches SW1 and SW3  
•  Port 1 (J3) is configured by switches SW2 and SW4  
Follow instructions for setting the switches to select the appropriate functions for each 
port. 
Factory Default 
The factory default setting is DTE on each port.