Watch dog settings?

I have Collie and i noticed watch dog is not shutting down power when ping is huge. Can you advise where can i fine tune the settings of watch dog? I have been trying to find out more information about this but can’t seem to get any help.

Collie uses a hardware watchdog and has no way to change the time.

How can i trouble shoot it than, if it is not reseting modem? When does watchdog restart modem then? Note that watch dog is running as it returns “OK” when sending command.