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Symmetricom XL-GPS User Manual

Symmetricom XL-GPS
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5: Function Reference
F2 – 12/24 Hour Format
Use function F2 to apply a 12 or 24-hour format to the time output by:
• ā€œKeypad Interfaceā€ on page37
• ā€œF8 – Continuous Time Once-per-Secondā€ on page60
• ā€œF90 – Code Output Configurationā€ on page105
See "F8 – Continuous Time Once-per-Second" on page 60
F2 affects how all four types of time (Local, Standard, UTC, GPS) appear when displayed or
output.
The 12-hour format counts hours from 1 to 12 twice per day, like a conventional wall clock.
The 24-hour format counts hours from 1 to 24 once per day (note: 24 is not actually
displayed, 23:59:59 changes to 00:00:00). Another example; in the 24 hour format, 18:00 is
equivalent to 6:00 PM in the 12-hour format (i.e., 18:00 – 12:00 = 6:00 PM).
Note: Local time is commonly displayed in both 12 and 24 formats. The specifications for
Standard, UTC, and GPS call for using the 24-hour format. Applying the 12-hour for-
mat to any time type leads to ambiguous time notation. For example, if the 12-hour
format is applied to UTC, the clock will display ā€œ249:10:21:34ā€ once in the morning,
and once at night.
The factory settings for F2 are 24-hour format for the display and 24-hour format for IRIG
(F90)
Command Line
To display the current hour format, send:
F2<CR>
XL-GPS responds:
F2<S>D<HH><SEP>I<HH><CR><LF>
where:
F
= ASCII character F.
02
= Function number.
<S>
= ASCII space character (one or more).
Page 50 of 221 .................................098-00116-000 Rev. A

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Symmetricom XL-GPS Specifications

General IconGeneral
BrandSymmetricom
ModelXL-GPS
CategoryReceiver
LanguageEnglish

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