Model: MTS200 (1U)
Doc. Ref. no. : m08/om/201
Issue no. : 03
User’s Manual
Page 140 of 195
Page 140 of 195
11.3.3.5 NTP Service & Status
NTP Service:
As MTS200 provides many configuration related to NTP operation, user need to restart the ntp service
after any change done in ntp configurations. This is required as ntp will not update the changed
configuration till service is restarted.
NTP Service in MTS200 can be restarted through front panel keypad or console based configuration
utility or webserver.
For restarting NTP though front keypad, refer section 9.1 and through console based configuration utility,
refer section 9.2.2.
For restarting ntp service through webserver, refer section 13.4.
INFORMATION
Whenever ntp service is started or restarted, the internal system re-
configures the gps receiver using ntp driver which takes few seconds for
internal clock to synchronize with gps receiver. As a result, whenever ntp
is restarted, display seconds update, serial, event and IRIG output may
see some jump in output for 3 to 4 seconds.
NTP service cannot be restarted during unlock conditions if local clock in
ntp settings is disabled.
When NTP service is stopped, internal clock is running freely on its own
clock PPM and is not synchronized with gps receiver. In such conditions,
the accuracy of GPS receiver which is higher then internal clock PPM
accuracy will not be in effect and all time outputs including NTP will
operate on internal Clock PPM which many be around 20 -30 PPM.
Whenever there are modifications in ntp related keys in ntp clients, it is
necessary to restart the ntp service in ntp clients for new changes to take
effect.
NTP Status
:
MTS200 is capable to generate internal ntp driver status information and the internal clock accuracy
statistics. User can check ntp status output through webserver and console based configuration utility.
MTS200 is also capable to store the record of ntp statistics for 10 days after which they are auto removed
but maintaining the last 10 days records.
In Webserver, NTP Status menu in NTP menu, display all ntp status as well as ntp statistics graph output
as shown in below figures.
