3.2 WIRING
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.
3
Using an amplitude modulated receiver causes errors up to 1 ms in event time-stamping.
NOTE
Using an amplitude modulated receiver also causes errors of up to 1 ms in metered synchrophasor values.
NOTE
3-24
Figure 3–24: OPTIONS FOR THE IRIG-B CONNECTION
D60 Line Distance Protection System
3 HARDWARE
3.2.10 IRIG-B
GE Multilin