EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 47-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
5.4.5
Heading Output
Magnetic heading is available in the following formats:
Heading Type
Sources
ARINC 429 Low Speed
ACU (P3 pins 4/5)
ACU2 (P3 pins 4/5)
EFD1000 E5 (pins 26/27
)
ARINC 429 High Speed
ACU2 (P3 pins 4/5)
EFD1000 E5 (pins 26/27).
Can only be used with ACU2
or no ACU.
RS-232 (Format C and Z) EFD1000 E5 (pins 13,14,15)
Synchro (ARINC 407)
ACU2 (analog)
includes XYZ synchro out, 26Vac Ref out
(1)
, and valid
Table 5-3: Heading Sources
(1)
NOTE: The ACU2 26Vrms@400hz reference output can support loads up to 0.06VA, which
may be one analog or several digital indicators. It is suggested to determine the load
requirements of the sources or use an external inverter as the synchro reference.
5.4.6
Air Data Outputs
Air data information is available in the following formats. The ACU does not pass-thru air
data information to its output bus, the ACU2 does. See Section 8 for ARINC 429 and RS-
232 air data output specifications.
Air Data Type
Sources
ARINC 429 Low Speed
ACU2 (P3 pins 4/5)
EFD1000 E5 (pins 26/27)
ARINC 429 High Speed
ACU2 (P3 pins 4/5)
EFD1000 E5 (pins 26/27).
Can only be used with ACU2
or no ACU.
RS-232 (Format C and Z) EFD1000 E5 (pins 13,14,15)
Table 5-4: Air Data Sources
5.4.6.1
EFD1000 E5 as Encoding Altitude Source
14CFR 91.217 states in part, a) No person may operate any automatic
pressure altitude reporting equipment associated with a radar beacon transponder.
Unless, as installed, that equipment was tested and calibrated to transmit altitude data
corresponding within 125 feet (on a 95 percent probability basis) of the indicated or
calibrated datum of the altimeter normally used to maintain flight altitude, with that
altimeter referenced to 29.92 inches of mercury for altitudes from sea level to the
maximum operating altitude of the aircraft.
