This object reports the global holdoff time that the device waits before declaring a signal failure on a clock source and acting on it, a debounce timer to prevent momentary glitches from triggering unnecessary clock switchovers. It matters because too short a holdoff can cause the device to flap between clock sources on brief line noise, while too long a holdoff delays legitimate failover during a real outage. A value of 300 (ms) would mean a very brief signal dropout under 300ms would not be treated as a failure requiring a source switch at all.