Honeywell BENDIX KING KMH 880 System Installation Manual page 183

B
D. Radio Altimeter Type; Not Installed, ARINC 429, Bendix/King Analog,
Sperry Analog, Collins Analog or ARINC 552A.
The Radio Altimeter Source Port will input to the TAS Processor. The input
impedance into this port is 55 Kohms. The port has an associated Radio
Altitude Valid flag input to the TAS Processor.
Radio Altimeter Valid input will be 20 to 30 VDC during proper altimeter
operation (if present). Any failure of the altimeter causes the flag signal to
become an open circuit. The analog radio altimeter input (if present) will be
considered failed if the altitude is within a valid range (-20 to 2500 feet) and
the valid pin is in the invalid state.
The Radio Altimeter Type Program will indicate which type of radio altime-
ter input is used.
Due to tolerances in the TAS Processor analog I/O hardware, the accuracy for
the 0 - 100 foot range may be ± 10 feet.
E. On Ground Display Mode; TAS in Standby Mode On-Ground or TAS in TA
Only Mode On-Ground.
The On Ground Display Mode will indicate to the processor whether the
system will go to Standby Mode when on the ground or that the system will
go to TA Mode (with aurals and voice inhibited due to altitude defined by
TAS logic) when the aircraft is on the ground.
F. Baro Altimeter Type; Gillham, ARINC 575, ARINC 706.
The Barometric Altimeter Type program will indicate the type of barometric
altimeter source [either Gillham/Gray Code, ARINC 575 (ARINC 419) or
ARINC 706 (ARINC 429)] that interfaces to the TAS Processor.
G. Controller Type; ARINC 735 Protocol, or Discrete Control.
The Controller Type will determine the type of control data, either the Con-
trol Panel to the TAS Processor via the CNTL HD RX (ARINC 429) input
bus or via Discrete Control switches.
H. Ground Headphone Volume; 1.25, 2.5, 5, 10, 20, 40, 80, 100 mw.
The on ground headphone level will be configurable to the above levels.
Rev 0, October/2000
NOTE
10609I00.ZIPCDL
KMH 880/KTA 870
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