Your altitude is automatically reported with the AT 3000 Altitude Digitizer. This solid State blind encoding altimeter is designed to interface with the Terra by Trimble TRT 250D transponder as well as other Mode C transponders. The addition of the AT 3000 to any transponder prevides the altitude reporting capability that is required when you need to fly in today's complex airspace.
Accuracy: +/- 100 ft. nominal ( measured at the digital altitude code transition points; tracking adjustments are provided to permit matching for correspondence with the aircraft altimeter.)
Altitude Range: -1000 to +30,000 ft. maximum operating range
Input Power: 11 to 32 VDC, 160 mA at 14 VDC; 80mA at 28 VDC
Size: 2.55(W) x 1.65(H) x 7.25(L)
Weight: 0.5 lbs.