Nikon D90 - Manual (Page 145)

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❚❚Setup Menu Options
The GPS item in the setup menu contains the options listed below.
• Auto meter off: Choose whether or not the exposure meters will turn off
automatically when the GP-1 is attached.
• Position: This item is only available if the GP-1 is connected, when it displays the
current latitude, longitude, altitude, and Coordinated Universal Time (UTC) as
reported by the GP-1.
A Coordinated Universal Time (UTC)
UTC data is provided by the GPS device and is independent of the camera clock.
Option Description
Enable
(default)
Exposure meters will turn off automatically if no operations are performed for
the period specified in Custom Setting c2 (Auto meter-off delay, pg. 179). This
reduces the drain on the battery but may prevent GPS data from being recorded
if the shutter-release button is pressed all the way down without pausing.
Disable
Exposure meters will not turn off while the GP-1 is connected; GPS data will
always be recorded.