3-24 D30 Line Distance Protection System GE Multilin
3.2 WIRING 3 HARDWARE
3
3.2.10 IRIG-B
IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices within
1 millisecond. The IRIG time code formats are serial, width-modulated codes that can be either DC level shifted or ampli-
tude modulated (AM). Third party equipment is available for generating the IRIG-B signal; this equipment can use a GPS
satellite system to obtain the time reference so that devices at different geographic locations can be synchronized.
Figure 3–26: IRIG-B CONNECTION
Using an amplitude modulated receiver causes errors up to 1 ms in event time-stamping.
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