GE Multilin L30 Line Current Differential System 7-97 COMMANDS AND TARGETS 7.2 TARGETS7• Description of problem: A bad IRIG-B input signal has been detected.• How often the test is performed: Monitored whenever an IRIG-B signal is received.• What to do: Ensure the following:– The IRIG-B cable is properly connected.– Proper cable functionality (that is, check for physical damage or perform a continuity test).– The IRIG-B receiver is functioning.– Check the input signal level (it may be less than specification).If none of these apply, then contact the factory.• Latched target message: No.• Description of problem: No PTP enabled port has good PTP signal input.• How often the test is performed: Activated when no acceptable signal is being received.• What to do: Ensure the following:– The Ethernet cable(s) are properly connected.– At least one PTP grandmaster-capable clock is functioning.– If strict PP is enabled, that entire network is PP compliant.– The network is delivering PTP messages to the relay.• Latched target message: No.• Description of problem: An Ethernet connection has failed.• How often the test is performed: Monitored every five seconds.• What to do: Check Ethernet connections. Port 1 is the primary port and port 2 is the secondary port.• Latched target message: No.• Description of problem: The SNTP server is not responding.• How often the test is performed: Every 10 to 60 seconds.• What to do: Check SNTP configuration and network connections.• Latched target message: No.• Description of problem: A discrepancy has been detected between the actual and desired state of a latching contactoutput of an installed type “4L” module.• How often the test is performed: Upon initiation of a contact output state change.• What to do: Verify the state of the output contact and contact the factory if the problem persists.MAINTENANCE ALERT:**Bad PTP Signal**MAINTENANCE ALERT:Port ## FailureMAINTENANCE ALERT:SNTP FailureMAINTENANCE ALERT:4L Discrepancy
