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8030HEPTA/GPS GPS - NTP Time Server with 2x 10/100/1000 MBit LAN Interface - V04.00
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hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
8.3.3.5 Extended NTP Configuration
NTP is a standard for synchronising clocks in computer systems via packet-based communi-
cation networks. For special applications a NON standard setting can be configured.
For activation of this special NTP setting, the customer's approval shown in the WebGUI
needed to be declared by checking the field "I agree".
8.3.3.5.1 Suppression of unspecified NTP Outputs (Block Output when Stratum
Unspecified)
Unspecified NTP outputs that e.g. are generated by NTP at a restart are suppressed when
this function is enabled.
8.3.3.5.2 NTP Timebase
For custom applications this function enables adjustment of the time base of the NTP output.
Entering this function the transmitted time protocol of the Time Server is not
conform to the NTP standard anymore.
According to the NTP standard NTP uses only the UTC time base. The NTP
time protocol does not allow any leaps in time.
This function is only allowed for the Output of NTP
In case of activated function the output of the Time Server for
SINEC H1 TIME DATAGRAM / TIME / DAYTIME
is released with a wrong time ba-
sis. Therefore this datagram should be deactivated for security reasons.