Symmetricom XLi IEEE 1588 F66 Daylight Saving Time DST Mode, For example, to disable DST, enter

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

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:

F = ASCII character F

66= function number

<S>	= ASCII space character one or more.
<STATE>	=	Off or Manual.
<ENTER/EXIT>	= If <STATE> is Manual, <ENTER/EXIT> are the dates it enters and exits DST.
<CR>	=	carriage return character.
<LF>	=	line feed character.

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 63

997-01510-03, Rev. C, 12/12/2006