7.6
SEL-787 Relay
Instruction Manual
Date Code 20081022
Communications
Communications Interfaces
Figure 7.4
SEL Cable C222— SEL-787 to Modem
Figure 7.5
SEL Cable C272A— SEL-787 to SEL Communications
Processor (Without IRIG-B Signal)
Figure 7.6
SEL Cable C273A— SEL-787 to SEL Communications Processor
(With IRIG-B Signal)
SEL-787 Relay
9-Pin Male
D Subconnector
25-Pin Female
D Subconnector
5
3
7
2
8
9
7
2
20
3
8
1
GND
TXD
RTS
RXD
CTS
GND
GND
TXD (IN)
DTR (IN)
RXD (OUT)
CD (OUT)
GND
Pin
Func.
Pin
Func.
Pin #
Pin #
**DCE Device
**DCE = Data Communications Equipment (Modem, etc.)
SEL Communications Processor
9-Pin Male
D Subconnector
9-Pin Male
D Subconnector
2
3
5
7
8
3
2
5
8
7
RXD
TXD
GND
RTS
CTS
TXD
RXD
GND
CTS
RTS
Pin
Func.
Pin
Func.
Pin #
Pin #
SEL-787 Relay
SEL Communications Processor
9-Pin Male
D Subconnector
9-Pin Male
D Subconnector
2
3
4
5
6
7
8
3
2
4
5
6
8
7
RXD
TXD
IRIG+
GND
IRIG-
RTS
CTS
TXD
RXD
IRIG+
GND
IRIG-
CTS
RTS
Pin
Func.
Pin
Func.
Pin #
Pin #
SEL-787 Relay
Summary of Contents for SEL-787
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