[CAUSE] The tmnxSatSyncIfTimRef1Alarm notification is generated when an alarm condition on the first timing reference is detected. [EFFECT] If the other timing reference is free of faults, the satellite no longer has a backup timing reference. If the other timing reference also has a fault, the satellite will likely no longer be synchronous with the host. [RECOVERY] Investigate the state of the link between the host and the satellite (i.e. the uplink) that drives the first timing reference on the satellite for faults.