Welch Allyn Connex CS Central Station & Server - User Manual - Manual (Page 110)

104 Time Synchronization Welch Allyn
3. Mark the local computer as a reliable time server. Enter the command:
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reg add HKLM\system\CurrentControlSet\Services\W32Time\Config /v
AnnounceFlags /t REG_DWORD /d 0x5 /f
4. Update the w32tm service. Enter the command:
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w32tm /config /update
5. Verify that NtpServer is enabled. Enter the command:
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w32tm /query /configuration
6. Scroll down the list and look for (Enabled: 1)
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NtpServer (Local) 
DllName: C:\Windows\system32\w32time.dll (Local) 
Enabled: 1 (Local) 
InputProvider: 0 (Local)
7. Reboot the server.
Configuring client synch with an authoritative time server
1. Right click on the clock in the system tray, or enter the command "timedate.cpl" from
the command prompt.
2. Select the "Internet Time" tab (If this tab is missing, it means machine is on an Active
Directory domain and time is synchronized with the domain controller, and it’s not
possible to change the time synchronization settings from here).
3. Click “Change Settings”.
4. Enable “Synchronize with an Internet time server”.
5. In the server section, enter the IP address of the Authoritative Time Server, or one of
the standard external time servers, such as time.nist.gov.
6. Click “Update Now” to force synchronize.
7. To change the interval at which the time should sync with the NTP Server, change a
key in the registry located at:
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HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProv
iders\NtpClient
8. In the right pane, right-click SpecialPollInterval, and then click Modify.
9. Change from 604800 to 3600 decimal (3600 represents 60 minutes). You can change
this number as per the polling intervals required by the system.).
10. Restart Windows Time service through command line using:
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net stop w32time && net start w32time
11. Run the following command on computers other than the domain controller to reset
each computer's time against the time server:
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w32tm /resync /rediscover