Irig-B - GE SR345 Instruction Manual

ELECTRICAL INSTALLATION

IRIG-B

GPS CONNECTION
OPTIONAL
TIME CODE
GENERATOR
AMPLITUDE MODULATED
SIGNAL CAN BE USED)
2–16
Courtesy of NationalSwitchgear.com
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. The type of form is auto-detected by the 345 relay. 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 18: IRIG-B connection
GPS SATELLITE SYSTEM
IRIG-B
RG58/59 COAXIAL CABLE
+
(DC SHIFT OR
–
GE MULTILIN
345 RELAY
E1
D1
TO OTHER DEVICES
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 2: INSTALLATION
IRIG-B(+)
RECEIVER
IRIG-B(-)
897741.CDR