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master-slave configuration with the primary servers at the root and secondary servers of decreasing
accuracy at successive levels toward the leaves.
11.3.2 GPS Master Clock NTP Output:
GPS Master Clock Model MC-1-M
output port which provides the functionality of NTP server. This NTP output is capable to synchronize time
of various NTP clients such as windows PC, Unix/Linux machines and other clients whi
protocol. GPS Master Clock Model MC
of accuracy) after atomic clock providing the NTP timestamp output resolution in milliseconds. Stratum
level 1 indicates that a device synchronizes its own clock from radio clock or satellite clock.
Clock Model MC-1-M NTP output operates in Unicast mode in which NTP server responds only when
there is NTP request from NTP clients. NTP clients operating at stratum level lower than
can synchronize their time from GPS Master Clock
GPS Master Clock Model MC-1-M continuous to provide NTP output even under Unlock conditions (when
there is no satellite signal available) depending on its interna
user can configure stratum level (2 to 15) of NTP output only for holdover conditions which is applicable
when GPS Master Clock Model MC
to NTP client devices whenever GPS Master Clock
ideal run conditions. Under Lock conditions,
operate at stratum level 1 which cannot be changed.
User should change the stratum level of
knowledge of its NTP Server-Client network hierarchical level architecture. Stratum level decreases by 1
at every NTP server-client level stages with respect to GPS Cl
topmost level (primary GPS servers) is assigned as one and each level downwards (secondary servers)
in the hierarchy assigned as one greater than the preceding level). If the stratum level of
Clock Model MC-1-M device is configured at 15 under Unlock conditions, no NTP client will synchronize
its time with NTP server output as level 15 is the last limit of stratum as per NTP standard.
Doc. Ref. no. :
slave configuration with the primary servers at the root and secondary servers of decreasing
accuracy at successive levels toward the leaves.
NTP Output:
Master Clock device is equipped with 10/100 Mbps based Ethernet
output port which provides the functionality of NTP server. This NTP output is capable to synchronize time
of various NTP clients such as windows PC, Unix/Linux machines and other clients whi
MC-1-M operates at stratum 1 level which is the highest level (in terms
of accuracy) after atomic clock providing the NTP timestamp output resolution in milliseconds. Stratum
ynchronizes its own clock from radio clock or satellite clock.
NTP output operates in Unicast mode in which NTP server responds only when
there is NTP request from NTP clients. NTP clients operating at stratum level lower than
GPS Master Clock Model MC-1-M NTP output.
continuous to provide NTP output even under Unlock conditions (when
there is no satellite signal available) depending on its internal RTC clock time and accuracy. If required,
user can configure stratum level (2 to 15) of NTP output only for holdover conditions which is applicable
MC-1-M device is in Unlock condition. This feature provides the indication
GPS Master Clock Model MC-1-M device enters holdover mode during
ideal run conditions. Under Lock conditions, GPS Master Clock Model MC-1-M NTP output will always
operate at stratum level 1 which cannot be changed.
change the stratum level of GPS Master Clock Model MC-1-M device carefully, after having
Client network hierarchical level architecture. Stratum level decreases by 1
client level stages with respect to GPS Clock device stratum level.(Stratum at the
topmost level (primary GPS servers) is assigned as one and each level downwards (secondary servers)
in the hierarchy assigned as one greater than the preceding level). If the stratum level of
device is configured at 15 under Unlock conditions, no NTP client will synchronize
its time with NTP server output as level 15 is the last limit of stratum as per NTP standard.
Figure 11.2: NTP frame format
Model: MC-1-M (2U)
Doc. Ref. no. : - m05/om/101
Issue no. 14
User’s Manual
slave configuration with the primary servers at the root and secondary servers of decreasing
Master Clock device is equipped with 10/100 Mbps based Ethernet
output port which provides the functionality of NTP server. This NTP output is capable to synchronize time
of various NTP clients such as windows PC, Unix/Linux machines and other clients which support NTP
operates at stratum 1 level which is the highest level (in terms
of accuracy) after atomic clock providing the NTP timestamp output resolution in milliseconds. Stratum
ynchronizes its own clock from radio clock or satellite clock. GPS Master
NTP output operates in Unicast mode in which NTP server responds only when
there is NTP request from NTP clients. NTP clients operating at stratum level lower than 1 (i.e. 2 to 15)
continuous to provide NTP output even under Unlock conditions (when
l RTC clock time and accuracy. If required,
user can configure stratum level (2 to 15) of NTP output only for holdover conditions which is applicable
device is in Unlock condition. This feature provides the indication
device enters holdover mode during
NTP output will always
device carefully, after having
Client network hierarchical level architecture. Stratum level decreases by 1
ock device stratum level.(Stratum at the
topmost level (primary GPS servers) is assigned as one and each level downwards (secondary servers)
in the hierarchy assigned as one greater than the preceding level). If the stratum level of GPS Master
device is configured at 15 under Unlock conditions, no NTP client will synchronize
its time with NTP server output as level 15 is the last limit of stratum as per NTP standard.
