Technical data

Product Specification
HIF-2121/R5 CAGE CODE: 97896 SCALE: NONE SIZE: A DWG NO: 965-1176-601 REV: D SHEET 102
TABLE 6.8-2: SNAPSHOT KEYS
Selected Key Description
Snapshot Area Requires valid latitude and longitude to be with defined area
Hdg Selected Requires valid heading within +/- 30 deg of selected value
Minimum Radio Altitude Requires valid radio altitude to be greater than selected value
Terrain Elevation Requires terrain elevation to be within a specific tolerance of the selected value
Maximum Time Maximum time permitted to satisfy all envelope modulation keys after leaving the
snapshot
All of the keys, either by virtue of not being selected, or by being selected and satisfied, are required to enable Envelope
Modulation. Envelope Modulation parameters are either within the selected values if the keys fit, or defaulted to normal
values if the keys don’t fit. These parameters are used as inputs to the alert/warning modes and thereby provide the
mechanism for Envelope Modulation.