Garmin G1000H Bell 407GX Pilot's Guide - Page 295

HAZARD AVOIDANCE USING XM SATELLITE WEATHER PRODUCTS The primary map for viewing XM Weather data is the Weather Data Link (XM) Page in the Map Page Group. This is the only map display capable of showing information for all available XM weather products. Viewing the Weather Data Link (XM) Page: 1) Turn the large FMS Knob to select the Map Page Group. 2) Turn the small FMS Knob to select the Weather Data Link (XM) Page. NEXRAD Weather Product Icon NEXRAD Weather Product Ages (US & Canada) NEXRAD Weather Product Selected for Display Figure 6-2 Weather Data Link (XM) Page When an XM weather product is active on a map, the age of the data is displayed on the screen to the right of the product symbol (Figure 6-2). 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 (defined in the Refresh Rate column in Table 6-1). If for any reason, a weather product is not refreshed within the Expiration Time intervals (see Table 6-1), the data is considered expired and is removed from the display. This ensures that the displayed data is consistent with what is currently being broadcast by XM Satellite Radio services. If more than half of the expiration time has elapsed, the color of the product age displayed changes to yellow. Table 6-1 shows the weather product symbols, the expiration time and the refresh rate. The refresh rate represents the interval at which XM Satellite Radio broadcasts 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 Data Link Receiver. Weather data is updated at intervals that are defined and controlled by XM Satellite Radio and its data vendors. 190-01255-00 Rev. A Garmin G1000H™ Pilot's Guide for the Bell 407GX 283