Troubleshooting The Front Panel Cooling Fan; Troubleshooting - Network Pcs Cannot Sync - Spectracom SecureSync User Reference Manual

6.10 Troubleshooting the Front Panel Cooling Fan
6.10

Troubleshooting the Front Panel Cooling Fan

The cooling fan (located on the front panel, to the right of the LED time display) is a temperature
controlled cooling fan. An internal temperature sensor determines when the cooling fan needs to
turn on and off. It is normal operation for the cooling fan to not operate the entire time SecureSync
is running. It may be turned off for long periods at a time, depending on the ambient and internal
temperatures.
To verify the cooling fan is still operational, power cycle SecureSync unit (if AC and DC power are
both applied, momentarily turn off the AC power switch and disconnect the DC power connector).
6.11 Troubleshooting – Network PCs Cannot Sync
In order for clients on the network to be able to sync to SecureSync, several requirements must be
met:
1.
2.
3.
4.
454
NOTE – If the internal temperature in the unit is below 30 degrees Celsius, the fan
may not turn on as part of the power-up sequence. In this case, it is recommended to
let the unit "warm up" for approximately 30 minutes, in order to allow the unit to get to
the appropriate temperature.
The PC(s) must be routable to SecureSync. Make sure you can access SecureSync
Web UI from a PC that is not syncing. If the PC cannot access the Web UI, a network
issue likely exists. Verify the network configuration.
The network clients have to be configured to synchronize to SecureSync's address.
For additional information on syncing Windows PC's, visit the Spectracom website
www.spectracomcorp.com
(
port > Library > Installation and Troubleshooting Guides , and download/view the
Synchronizing Windows Computers".
document titled "
ument also contains troubleshooting assistance for Windows synchronization. For
UNIX/Linux computer synchronization, please visit
If at least one PC can sync to SecureSync, the issue is likely not with SecureSync
itself. The only SecureSync configurations that can prevent certain PCs from syncing
to the time server are the NTP Access table and MD5 authentication. Refer to Sections
"Configuring NTP Access Restrictions" on page 117 and "NTP Stratum Configuration"
on page 123 respectively. A network or PC issue likely exists. A firewall may be block-
ing Port 123 (NTP traffic), for example.
NTP in SecureSync must be "in sync" and at a higher Stratum level than Stratum 15
(such as Stratum 1 or 2, for example). This requires SecureSync to be either synced to
its input references or in Holdover mode. Check the current NTP stratum level and the
sync status. Refer to Sections "NTP Stratum Configuration" on page 123, and "NTP
Status Monitoring" on page 249.
), and from the main site navigation menu select Sup-
The last section of this doc-
http://www.ntp.org/
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