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HONEYWELL Aerospace Electronic Systems Page 8
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Figure 1 Mark III CMU Front Panel
ARINC 607 defines the Aircraft Personality Module (APM) which contains all aircraft and system
configuration information. The APM is external to the MARK III CMU and is a permanent fixture in the
aircraft. Only one APM is required per MARK III CMU installation (one APM for each MARK III CMU
mounting tray). The same APM part number is used on all aircraft in the fleet.
2.2 System Interfaces
The Mark III CMU supports an extensive set of interfaces. Many of these interfaces are specifically defined
by ARINC 758. There are also a number of spare ARINC 429 ports available for additional devices as needed
by the user. The Mark III CMU supports all of today’s ACARS interfaces used on today’s aircraft, with
extensive capability for future growth.
Table 1 Mark III CMU Interfaces
Device ARINC
Specificati
on
Interface # Baseline /
Growth
VHF Radio 716 Audio 1 Baseline
VDR: Mode 0
Mode A
Mode 2
750 Audio
High speed ARINC 429
High speed ARINC 429
1
3
3
Baseline
Baseline
Option
Satellite Data Unit (SDU) 741
761
High speed ARINC 429
High speed ARINC 429
2
2 (note 1)
Baseline
Growth
HF Data Radio (HFDR) 753 Low speed ARINC 429 2 Baseline
UHF --- Audio 1 Growth
Mode S Transponder 718A High speed ARINC 429 2 (note 7) Baseline
Gatelink 751
undefined
High speed ARINC 429
Ethernet 10BaseT
1
note 2
Growth
Growth
MCDU/MIDU 739 High speed ARINC 429 3 Baseline
DCDU undefined High speed ARINC 429 1/2 (note 5) Growth
CDU ---- RS-422 2 Baseline
Printer 740/744
744A
Low speed ARINC 429
Ethernet 10BaseT
1 (note 3)
note 2
Baseline (note 3)
Growth
FMC 702
702A
Low speed ARINC 429
High speed ARINC 429
2/3 (note 4)
2/3 (note 4)
Baseline
Growth
Performance Computer (PZ) ----- RS-422 1 Growth
ACMS/DFDAU 619/429 Low speed ARINC 429 1 Baseline
CMC/CFDS/CFDIU 604/624 Low speed ARINC 429 1 Baseline
Cabin Terminal --- Low speed ARINC 429 2 Baseline
Electronic Library (ELS) --- High speed ARINC 429 1 Growth
Cockpit Voice Recorder
(CVR)
757 Low speed ARINC 429 1 Growth
GPSSU 743 High speed ARINC 429 1 Baseline
APM 607 --- 1 Baseline
Dual CMU 758 High speed ARINC 429 1 note 6
Mil-Std-1553B --- Mil-Std-1553B 1 Growth
DMT --- RS-232 1 Baseline
DLT --- RS-232 1 Baseline
Airborne Data Loader 615 High speed ARINC 429 1 Baseline
PCMCIA