5: Function Reference
F69 – Time Mode
Use function F69 to select the time type displayed by:
See "F1 – Time Zone Offset" on page 48
Select between the following types of time:
• 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 adjustment. For example, Pacific Standard
Time is UTC minus 8 hours
• Local Time is UTC plus a time zone and a daylight saving time adjustment.
The factory setting is UTC. Local Time modifies UTC time to include the Time Zone and
Daylight Saving Time adjustments, if enabled by the user.
Related functions:
“F90 – Code Output Configuration” on page105
“F1 – Time Zone Offset” on page48
Command Line
Use the following format to display the time mode currently used:
F69<CR>
F69 responds using the following format:
F69<S><TT><CR><LF>
where:
F69
= Function number 69
<S>
= ASCII space character.
<TT>
= Time Type. Either GPS, UTC, LOCAL, or STANDARD.
<CR>
= Carriage return character.
<LF>
= Line feed character.
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