Schweitzer Engineering Laboratories SEL-251 - Page 145

Date Code 20000421 Installation 6-9
SEL-251, -2, -3 Instruction Manual
3 TXD
2 RXD
5 GND
8 CTS
7 RTS
2 +IRIG
3 -IRIG
Cable 222
SEL-251 **DCE Device
Cable 231
SEL-PRTU SEL-251
Cable 239
Data and IRIG-B
SEL-2020 SEL-251
GND 5
TXD 3
RTS 7
RXD 2
CTS 8
GND 9
GND 1
TXD 2
RXD 4
CTS 5
+12 7
GND 9
RXD 2
TXD 3
GND 5
RTS 7
CTS 8
+IRIG 4
-IRIG 6
7 GND
2 RXD
20 DTR
3 TXD
8 CD
1 GND
5 GND
2 RXD
3 TXD
7 RTS
8 CTS
9 GND
Port 2R / J203
AUX Input / J201