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SRG-4500 User Guide (v7.0) Front Panel Menu System • 85
Poll Status
This menu line reports the current poll status of the designated NTP Server address.
Initially, the sub field will report that the SRG-4500 is currently waiting for replies from the designated NTP
Server:
Poll Status = Acquiring NTP
.
When replies from the designated NTP Server produce consistently accurate time stamps, the sub-field will change
to:
Poll Status = tLocked to NTP
.
During NTP acquisition, the following menu line appears below the Poll Status line:
Unlocked Poll every 010
secs
.
This menu line reports the polling interval when the NTP Server is being actively polled during initial acquisition.
The interval of 10 seconds should ensure that at least one reply will be found very quickly, After a reply has been
received, the polling interval drops back to the user setting made in the menu entry
Poll Server every 240
secs
above, and the following menu line appears.
The menu line
NTP time Uncertainty = nnnnms
reports the average variation in successive NTP replies.
Server Mode
An example of NTP Server Mode menu is below.
Figure 7.27 NTP Server Menu Example
Serve NTP if 'No GPS'
This menu line determines whether the SRG-4500 will serve NTP requests when the GPS option is not enabled.
The options in the sub-field are:
• No — NTP Server will not reply to NTP requests while GPS is disabled.
• Yes — NTP Server will reply to NTP requests while GPS is disabled.
When set for “Yes”, NTP time will be used to serve time requests for a limited time after which NTP time requests
will be ignored.
Serve NTP if 'SPG failed
This menu line determines whether the SRG-4500 will serve NTP requests while an accompanying Changeover
unit has detected an error on the unit.
The options in the sub-field are:
• No — NTP Server will not reply to NTP requests while the SRG-4500 has ‘failed’.
• Yes — NTP Server will reply to NTP requests while the SRG-4500 has ‘failed’.
DashBoard Menu
Figure 7.28 is an example of the DashBoard menu.
This is an NTP Client No =
Serve NTP if ‘SPG failed’ No =
Serve NTP if ‘No GPS’ No =
This is an NTP..............................Server
Server NTP if ‘No GPS’?........................xxx
Server NTP if ‘SPG Failed’?....................xxx