F66 - Daylight Saving Time (Dst) Mode - Symmetricom XLi IEEE 1588 User Manual

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F66 – Daylight Saving Time (DST) Mode
Use function F66 to enable or disable Daylight Saving Time (DST), and to schedule when Local time
enters and leaves DST. The factory setting for F66 is Manual (i.e., DST On). The hour for entering/
leaving DST is given in the 24-hour format. Entering/leaving DST can be scheduled for any hour of the
day, any day of the year. However, transitions scheduled within 24 hours of the beginning/end of the year
may not occur at the desired time. This function also works for locations in the southern hemisphere,
where DST spans the new year.
Command Line
To display the current status of F66, enter a command using the following format:
F66<CR>
XLi responds using the following format:
F66<S><STATE><ENTER/EXIT><CR>
where:
= ASCII character F
F
= function number
66
= ASCII space character one or more.
<S>
= Off or Manual.
<STATE>
<ENTER/EXIT> = If <STATE> is Manual, <ENTER/EXIT> are the dates it enters and exits DST.
= carriage return character.
<CR>
= line feed character.
<LF>
For example, to disable DST, enter:
F66 Off<CR>
XLi responds:
OK<CR><LF>
To enable DST and set the DST entry and exit times, use the following format:
F66 MANUAL<INHOUR><SEP><INWEEK><SEP><INDAY><SEP><INMONTH><OUTHOUR>
<SEP> <OUTWEEK><SEP><OUTDAY><SEP><OUTMONTH><CR>
XLi IEEE 1588 Clock
997-01510-03, Rev. C, 12/12/2006
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