System 9000TS
101
IRIGB Sync:-
Until the IRIGB card achieves an accurate time sync with the incoming IRIGB network
the 9000TS clock will free run using the IRIGB card clock as its reference, once an
accurate time sync to the IRIGB signal is established the 9000TS clock is effectively
tied to the IRIGB network time. There are three ways to check for IRIGB network
synchronisation:-
1. Status LED as described in previous section.
2. Select a common relay to follow “GPS Lock Fault” – relay will change state
when sync is lost.
3. Indicium – Event type 162 indicates sync ok and event type 163 indicates sync
lost.
Note: IRIGB sync loss will be reported after a period of approx 250 seconds. IRIGB
sync re-established will be reported in approx 30 seconds.
