Motorola WS5100 Series Reference Manual page 239

Delay (sec) Displays the round-trip delay (in seconds) for SNTP broadcasts between the SNTP
server and the switch.
Offset (sec) Displays the calculated offset between the switch and SNTP server. The switch
adjusts its clock to match the server's time value. The offset gravitates toward
zero over time, but never completely reduces its offset to zero.
Dispersion (sec) Displays how scattered the time offsets are (in seconds) from a SNTP time server
4. Select an existing NTP association and click the
in discerning whether the association should be maintained.
Details button to display additional information useful
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Switch Services