GE L30 Instruction Manual page 84

3.2 WIRING 3 HARDWARE
shifted or amplitude modulated (AM). 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.
3
Figure 3–25: OPTIONS FOR IRIG-B CONNECTION
3-26 L30 Line Current Differential System GE Multilin