REFERENCES - LF Radio
n
United Kingdom: National Physical Laboratory (NPL)'s TRUETIME service. +44 0891 516
333. http://www.npl.co.uk/npl/ctm/truetime.html
n
Italy: Istituto Elettrotecnico Nazionale "Galileo Ferrais" (IEN)'s CTD service. +39 166 11
46 15. http://www.ien.it/ar96/tf.htm
n
Switzerland: Swiss Federal Office of Metrology 's timecode service. +41 031 323 32 25.
http://www.metas.ch/en/labors/official-time/modem/index.html
n
Sweden: SP Swedish National Testing and Research Institute 's timecode service. +46 33
41 57 83 http://www-v2.sp.se/metrology/timefreq/eng/timesynch_modem.htm
n
Netherlands: Swinden Laboratorium (VSL). 09 00 61 71 81 9. http://nmi.nl/tijd_service-
663.pagina?lg=en
RESTARTbutton
After changing the NTP configuration, click the RESTART button to put the new configuration
into effect. While the NTP daemon restarts, its services are temporarily unavailable, and it
generates the following alarm events: NTP Stratum Change, NTP System Peer Change,
NTP Leap Change.
REFERENCES - LF Radio
The Low Frequency (LF) Radio is an optional Input Reference for the SyncServer S300 and
S350 models. The LF radio option operates as an Input Reference.
note: The S350i SyncServer does not include the Low frequency radio.
Also see Using LF Radio (on page 170).
Low Frequency Radio Configuration
Installed Radio Option: Specify the format of the radio time service for decoding:
n Not Installed (Default): disables the LF radio module.
n WWVB (60 kHz)
n DCF77 (77.5 kHz)
n JJY (40 kHz or 60 kHz) The customer specifies the frequency at the time the LF Radio
option is purchased.
Select Not Installed:
n If the LF radio option isn't present.
The 72 hour Reachability Chart shows a series of color-coded vertical bars:
n Green - Time was decoded.
n Red - Time was not decoded.
The height (y-axis) of the bars indicates a figure of merit. For example, the taller the green
bar, the better the signal and the more often the signal was decoded during the 15-minute
interval.
997-01520-02 Rev. F1.......................................................................... Page 75
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