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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.