Rs232 Communications; Irig-B - GE Feeder Management Relay 750 Instruction Manual

3.2 ELECTRICAL
The 9-pin RS232 serial port located on the front panel is used in conjunction with the 750/760PC software 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.
3
IRIG-B is a standard time code format that allows time stamping of events to be synchronized among connected 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 syn-
chronized.
GPS CONNECTION
OPTIONAL
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
3-18
Courtesy of NationalSwitchgear.com
Figure 3–21: RS232 CONNECTION
GPS SATELLITE SYSTEM

IRIG-B

RG58/59 COAXIAL CABLE
TIME CODE
GENERATOR
+
(DC SHIFT OR
–
Figure 3–22: IRIG-B CONNECTION
750/760 Feeder Management Relay

3.2.11 RS232 COMMUNICATIONS

GE MULTILIN
SR FAMILY
B10 IRIG-B(+)
B11 IRIG-B(-)
TO OTHER DEVICES
3 INSTALLATION
3.2.12 IRIG-B
RECEIVER
818838A7.CDR
GE Multilin