Aspen Avionics EFD1000 E5 - Table 8-14: ACU J2 Pin out; Figure 8-5: ACU J2 Connector (as Viewed from Front of Unit)

EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001 PAGE 98-226 REVISION D
© Copyright 2019 Aspen Avionics Inc.
Pin
Number
Name
Input /
Output
Function
J2-13
+GSFLG-IN
INPUT
Glideslope flag from VHF Nav Rx
J2-14
FD-PITCH-COM
INPUT
N/A
J2-15
FD-ROLL-COM
INPUT
N/A
J2-16
+UP
OUTPUT
Vertical output to autopilot (H)
J2-17
+VERT-FLG
OUTPUT
Vertical output flag (H)
J2-18
+RT
OUTPUT
Lateral deviation output
J2-19
ACU #1/#2
INPUT
Spare Discrete Input
J2-20
COMPOSITE-COM
-
VOR/LOC common
J2-21
Reserved
-
Spare Discrete Input
J2-22
Reserved
-
Spare Discrete Input
J2-23
Reserved
-
Reserved
J2-24
APPR-ACT
INPUT
Active Low input from GPS when GPS approach
mode activated
J2-25
1
HEADING VALID
OUTPUT
Active Low Output when Heading Valid
J2-26
+DH
INPUT
N/A
J2-27
FD-VALID
INPUT
N/A
J2-28
FD-PITCH2
INPUT
N/A
J2-29
ALT ENGAGE
OUTPUT
N/A
J2-30
-VLOCFLG-OUT
-
Common
J2-31
-GS-IN
INPUT
Glideslope deviation from VHF Nav Rx
J2-32
-GSFLG-IN
INPUT
Glideslope flag from VHF Nav Rx
J2-33
FD-PITCH1
INPUT
N/A
J2-34
FD-ROLL1
INPUT
N/A
J2-35
+DN
OUTPUT
Vertical output to autopilot (L)
J2-36
-VERT-FLG
OUTPUT
Vertical output flag (L)
J2-37
+LT
OUTPUT
Lateral deviation output
Table 8-14: ACU J2 Pin Out
1
NOTE – On ACU2 P/N 910-00004-102, J2-4 is a NAV Flag Discrete and J2-25 is a Glide
Slope Flag Discrete used on autopilots that require a superflag input.
Figure 8-5: ACU J2 Connector (as viewed from front of unit)
Pin
Number
Name
Input /
Output
Function
J3-1
429RX1A
INPUT
ARINC 429 Port 1 Receive A
J3-2
429TX1A
OUTPUT
ARINC 429 Port 1 Transmit A
J3-3
CRS-DATUM
OUTPUT
Course Datum output
20
1
37
19