GE 760

3-
18
750/760 Feeder Management Relay GE Power Management
3.2 TYPICAL WIRING 3 INSTALLATION
3
3.2.17 RS232 FRONT PANEL PROGRAM PORT
The 9-pin RS232C serial port located on the front panel is used in conjunction with the 750/760 PC Program
for programming setpoints and upgrading relay firmware. A standard 9-pin RS232 cable is used to connect the
relay to a personal computer as shown below. When downloading new firmware, make sure the relay address
is set to 1 and the baud rate is set to 9600.
Figure 3–21: RS232 CONNECTION
3.2.18 IRIG-B
IRIG-B is a standard time code format that allows time stamping of events to be synchronized among con-
nected devices within 1 millisecond. The IRIG time code formats are serial, width-modulated codes which can
be either DC level shift or amplitude modulated (AM) form. Third party equipment is available for generating
the IRIG-B signal; this equipment may use a GPS satellite system to obtain the time reference so that devices
at different geographic locations can also be synchronized.
Figure 3–22: IRIG-B CONNECTION
GE Power Management
SR FAMILY
IRIG-B(-)
RECEIVER
TO OTHER DEVICES
RG58/59 COAXIAL CABLE
GPS SATELLITE SYSTEM
GPS CONNECTION
OPTIONAL
IRIG-B(+)
B10
B11
+
-
818838A6.CDR
IRIG-B
TIME CODE
GENERATOR
(DC SHIFT OR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)