86 XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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F67 – Manual Leap Second Entry
Use Serial/Network Function F67 to manually enable a leap second insertion into the XLi clock time
structure. To request the present status of the manual leap seconds settings, send F67<CR> to the
Serial/Network port. The port will respond with the ASCII character string:
F67<SP><LS><SP><SELECT><SP><DATE><CR><LF>
where:
F = ASCII character F.
67 = function number
<SP> = ASCII space character one or more.
<LS> = current leap seconds value in seconds, for GPS Epoch / TAI Epoch
<SELECT> = NONE, ADD or SUB.
<DATE> = Date of next leap second insertion, or blank if <SELECT> is NONE.
<CR> = carriage return character.
<LF> = line feed character.
If the Manual Leap Second function is set with leap second event values, the port will respond with the
string described below.
Sample request: F67 <CR>
Response: F67 -14/-33 ADD 12/31/2007 <CR><LF>
To set the current leap second value for UTC / GPS , enter a continuous string of the form:
F67 <SEP>GPSLS<SEP><-nn>
where:
GPSLS= ASCII string indicating a GPS Epoch leap second value will be entered.
<-nn> = Leap second valued entered, -00 to –30.
Sample entry: F67 GPSLS -14<CR>
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