When a clock has lost synchronization it is still possible for NTP packets to be sent, to do this please ensure that the following settings are configured:
1.When the "Ignore requests when unsynced" setting is checked the clock will ignore NTP client requests packets when the clock is out of sync. To ensure that the clock does not ignore NTP client requests this option must not be checked.
2. Ensure the "Outputs always report 'Good Quality' "is unchecked: this will ensure that the true sync state of the clock is reported and therefore outputted.
3. Depending on your application and the accuracy required by end-devices:
- you can configure the "Enable holdover time" to a longer duration.
- you can also select the "Enable maximum inaccuracy check" and select the maximum inaccuracy you want to allow in your network before the clock stops sending NTP messages.
The configuration tool also provides you with an option to suppress any specific outputs based on the settings configured in the above point. By default, these settings are configured to "Never" which means that outputs are never suppressed.
Please ensure the settings configured in the clock are complemented to your application or accuracy required.