E-12 Acutime 2000 Synchronization Kit User Guide
NTP Diagnostics and Debugging E
TableE-1 shows troubleshooting options.
If none of these options solve the problem, check your operating
system error log for failure reports.
E.2.4 Running NTP with Event Polling Disabled
The Acutime NTP reference clock can be operated without event
polling.
This mode can be used to confirm communication between the
Acutime NTP Reference Clock and NTP, without relying on the event
trigger connection. The event trigger feature may not be functional on
all systems. If the Acutime NTP driver detects a problem using the
event trigger, it reverts to event disabled mode.
!Note – Running NTP without the Event Trigger degrades
performance to the level of a conventional serial NTP reference clock.
Table E-1 Troubleshooting: Acutime is Not Responding
Possible Problem Solution
Cabling or connectors have become
detached.
Connect and secure loose or
disconnected cables and connectors.
System does not support event
polling.
Configure fallback to synchronous polling
mode. Update NTP software.
No activity of Power or PPS indicators
on the Acutime Synchronization
Interface Module.
Confirm availability of wall power. Use a
monitoring utility on Port B to check GPS
status.
GPS is not tracking satellites.
(The Acutime NTP driver will not
accept time stamps from the GPS
receiver if it is not tracking satellites.)
Receiver may be jammed or obscured.
Use a TSIP monitoring utility on Port B to
check GPS health and status. Verify that
adequate power is being supplied to the
receiver.