Symmetricom XLi IEEE 1588 User Manual

1

Use function F1 to display and set the time zone offset between your Standard Time zone and Universal 
Time Coordinated (UTC). Refer to 

. F1 is the basis for 

Standard Time and Local Time used by F69. For an expanded explanation of Local, Standard, UTC, TAI,  
and GPS time, see 

For example, to set the time zone for Pacific Standard Time (UTC –8 hours), set the value in F1 to –
08:00. Exclude the 1-hour Daylight Saving Time (DST) offset from this value. DST is handled separately 
by 

.

Because the front panel display and Multicode Output card can be configured to display/distribute Local 
or Standard time, we recommended configuring F1 as described in the 

.

The factory setting for F1 is UTC –8:00 hours (Pacific Standard Time).

Related topics:

•

•

•

Command Line

To display the time zone offset, enter “F1<CR>” on the command line. The XLi responds with the 
following character string:

F1<S><SIGN><HH>:<MM><CR><LF>

where:

For example, to set the time zone offset, enter:

F

=  ASCII character F

01

= function 

number

<S>

=  ASCII space character (one or more)

<SIGN>

=  either no character or + for positive offsets or – for negative offsets

<HH>

=  one – or two-digit hours offset from 00 to12 hours

:

=  ASCII character for a colon

<MM>

=  two-digit minutes offset

<CR>

=  carriage return character

<LF>

= line 

feed 

character