Garmin 695, 696 owner manual Update Interval, Expiration, Broadcast

Appendices Additional Features Hazard Avoidance Flight Planning GPS Navigation Overview

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Hazard Avoidance

When a FIS-B weather product is active on a map, the age of the data is displayed on the screen in the lower left corner of the display. The age of the product is based on the time difference between when the data was assembled on the ground and the current GPS time. Weather products are refreshed at specific intervals (see Refresh Rate in the table below).

If, for any reason, a weather product is not refreshed within the Expiration Time intervals (see table), the data is considered expired and is removed from the display. This ensures that the displayed data is consistent with FIS-B broadcast data. If more than half of the expiration time has elapsed, the color of the product age displayed changes to yellow. The system displays dashes instead of a product age when a product has expired. If a weather product is not available or has not been received, the system displays ‘N/A’ instead of a product age.

The table below shows the FIS-B weather expiration time and the refresh rate. The broadcast interval represents the interval at which FIS-B GBTs broadcast new signals that may or may not contain new weather data. It does not represent the rate at which weather data is updated or new content is received by the GDL 39.

	Expiration	Update Interval	Broadcast
FIS-B Products	Time		Interval
		(Minutes)
			(Minutes)
NEXRAD Composite		~5 minutes precipitation
	60 minutes	mode	15
Reflectivity (CONUS)
		10 minutes for clear air
NEXRAD Composite	60 minutes	As Available	2.5
Reflectivity (Regional)
METAR	8 hours	1 minute (where available),	5
		As Available otherwise
TAF	12 hours	8 hours	10
AIRMET	12 hours	As Available	5
SIGMET	12 hours	As Available, then at 15	5
		minute intervals for 1 hour
PIREP	8 hours	As Available	10

126 Garmin GPSMAP 695/696 Owner’s Manual 190-00919-00 Rev. F