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XLi Time & Frequency System
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XLi-man, Issue 8, 6/17/2008, Rev. H
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The user would enter F1 (ENTER, 1, ENTER), set a positive or negative sign (up/down arrow button),
and enter the number of hours (0800 or 0900).
F2 – 12/24-Hour Format
: Select a 12 or 24-hour display format. The default setting is the 24-hour
display format, which represents 6 PM as “18:00”. The user would enter F2 (ENTER, 2, ENTER), See
“F2 – 12/24 Hour Format” on page 49
.
F3 – Time Date
: If you’re using IRIG time code as the primary reference source, verify or update the
current year in F3. If you’re using GPS as the primary reference source, you can skip this step. See
“F3
– Time & Date” on page 50
.
F66 – Daylight Saving Time (DST)
: If needed, set when Local time enters and leaves DST. See
“F66 –
Daylight Saving Time (DST) Mode” on page 84
.
F69 – Time Mode
: Select the type of time shown on the front panel display and output by functions F8,
F9, and F90. See
“F69 – Time Mode” on page 89
. The four choices are as follows:
•
UTC
(Coordinated Universal Time) differs from GPS Time by the addition of leap-second
corrections to compensate for variations in the earth’s rotation.
•
GPS
time is derived directly from the GPS constellation and doesn’t contain any leap-second
adjustments or other GPS-to-UTC corrections.
•
Standard Time
is UTC plus a time zone offset. For example, Pacific Standard Time is UTC
minus 8 hours
•
Local Time
is UTC adjusted by the standard time zone offset and the daylight saving time
adjustment (if in effect).
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