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KRA 405B RADAR ALTIMETER INSTALLATION MANUAL
Page 1-5
006-10536-0010 Rev. 10 Oct/2005
C. KRA 405B RECEIVER/TRANSMITTER (cont.)
ALTITUDE OUTPUT:
Slope:
Precision Equipment: -20 to 2,500 ft (-6.1 to 762.0 m) -10 mV/ft (32.81 mV/m); Zero
ft = 0.000 volts
Auxiliary Out #1: -20 to 500 feet (-6.1 to 152.4 m) +20 mV/ft (+65.62 mV/m); 500
to 2,500 feet (152.4 to 762 m) +3 mV/ft (9.84 mV/m); Zero ft
= +0.400 volts
Auxiliary Out #2:
(-0101, -2001/-4001)
-20 to 2,500 feet (-6.1 to 762.0 m) -4 mV/ft (13.12 mV/m);
Zero feet = 0.000 volts
Auxiliary Out #2:
(-0202)
-20 to 480 feet (-6.1 to 146.3 m) +20 mV/ft (+65.62 mV/m); 480
to 2,500 feet (146.3 to 762 m) 10 x logn [e(h+20)/500](10 x
logn [e(h+6.1/152.4)]m); Zero ft = +0.400 volts
Analog Altitude: -20 to 500 feet (-6.1 to 152.4 m) +20 mV/ft (+65.62 mV/m); 500
to 2,500 feet (152.4 to 762 m) +3 mV/ft (9.84 mV/m); Zero ft
= +0.400 volts
Arinc 429 Out: Shall meet all ARINC 429 electrical
specifications.
The following are serial digital outputs from the KRA 405B:
LABEL INFORMATION CONTAINED IN LABEL FORMAT SPEED
164 Radio Height BNR Low Speed
165 Radio Height BCD Low Speed
371 GA Equipment Code BCD Low Speed
377 Equipment Identifier Word BCD Low Speed
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