Date Code 20080110 Communications 7-5
SEL-387E Instruction Manual
Terminal Function
5 Shield
6 N/C
7 +IRIG-B
8 –IRIG-B
9 NA
Table 7.4: Serial Communications Port Pin/Terminal Function Definitions
Pin Function Definition
N/C No connection
+5 Vdc (0.5 A limit) 5 Vdc Power Connection
RXD, RX Receive Data
TXD, TX Transmit Data
IRIG-B IRIG-B Time-Code Input
GBD Ground
SHIELD Grounded Shield
RTS Request To Send
CTS Clear To Send
DCD Data Carrier Signal
DTR Data Terminal Ready
DSR Data Set Ready
Several optional SEL transceivers are available to provide alternative communications
interfaces, including EIA-485 and fiber optic.
IRIG-B
Refer to Section 2: Installation. Note that demodulated IRIG-B time code can be input into
Serial Port 1 or Serial Port 2 on any of the SEL-387E models. This is easily handled by
connecting Serial Port 2 of the SEL-387E to an SEL-2032 with Cable C273A (see cable
diagrams that follow in this section).
Note that demodulated IRIG-B time code can be input into the connector for Serial Port 1. If
demodulated IRIG-B time code is input into this connector, it should not be input into Serial Port
2, and vice versa.
To Next Page
Loading...
