GE L30 Instruction Manual page 86

3.2 WIRING
The IRIG-B repeater provides an amplified DC-shift IRIG-B signal to other equipment. By using one IRIG-B serial connec-
tion, several UR-series relays can be synchronized. The IRIG-B repeater has a bypass function to maintain the time signal
even when a relay in the series is powered down.
3
Using an amplitude modulated receiver will cause errors up to 1 ms in event time-stamping.
NOTE
Using an amplitude modulated receiver will also cause errors of up to 1 ms in metered synchrophasor values.
Using the IRIG-B repeater function in conjunction with synchrophasors is not recommended, as the repeater adds
a 40 μs delay to the IRIG-B signal. This results in a 1° error for each consecutive device in the string as reported in
NOTE
synchrophasors.
3-26
Figure 3–27: IRIG-B REPEATER
L30 Line Current Differential System
3 HARDWARE
GE Multilin