*
Flight deck communication function (FDCF).
The DCMF manages the radio hardware interfaces and internal processing. The FDCF controls the flight deck interface and passes it on to the DCMF.
DCMF
The DCMF supplies the protocols and manages data for these sub-functions:
*
ACARS datalink sub-function
*
Onboard local area network (OLAN) interface sub-function
*
Print driver sub-function.
The aircraft communications addressing and reporting system (ACARS) datalink sub-function manages flight plan and maintenance data between the airplane and the ground service provider (GSP). The ACARS datalink sub-function connects to these components of other systems:
*
Satellite data unit (SDU)
*
Center and right VHF communication transceivers
*
Left, center and right radio tuning panels (RTPs).
EFFECTIVITY
BEJ ALL
The OLAN interface sub-function manages the data exchange between the DCMF and the components on the avionics local area network (AVLAN). The AVLAN is part of the OLAN. The AVLAN includes these components:
*
Maintenance access terminal (MAT)
*
Brouter.
The brouter connects to the portable maintenance access terminals (PMATs).
The print driver sub-function manages all print requests for the DCMS. It sends data from the DCMS to the flight compartment printer, and sends print job status and any fault data back to the DCMS.
FDCF
The FDCF supplies an operator interface for the DCMS. You use these components to make inputs to the FDCF:
*
Display select panel (DSP)
*
Multi-function display (MFD)
*
Control display units (CDU)
*
Cursor control devices (CCD)
*
Accept/reject/cancel switches.
The DSP controls which display unit shows the MFD. You use the DSP to select the COMM MFD display.
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DCMS -GENERAL DESCRIPTION
When you select the COMM display on the DSP, the MFD shows the FDCF main menu.
You use the CDUs to enter text to the FDCF displays. After you type text in the CDU scratch pad you use the CCD select switch to move it to the FDCF display.
You also use the CCDs to select menu items, buttons, and text boxes on the FDCF displays.
You use the accept/reject/cancel switches to accept, reject, or cancel messages that show on the FDCF displays.
EFFECTIVITY BEJ ALL 23-27-00
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777 AIRCRAFT MAINTENANCE MANUAL
DCMS -GENERAL DESCRIPTION
EFFECTIVITY BEJ ALL 23-27-00
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DCMS -COMPONENT LOCATIONS -FLIGHT DECK
Flight Deck Components
These are the DCMS related components in the flight deck:
*
Left data uplink control switches
*
Right data uplink control switches
*
Left inboard display unit (DU), (MFD)
*
Right inboard DU (MFD)
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Upper center DU
*
Lower center DU (MFD)
*
Display select panel
*
Left cursor control device (CCD)
*
Right CCD
*
Left control display unit (CDU)
*
Right CDU
*
Center CDU
*
Left radio tuning panel (RTP)
*
Right RTP
*
Center RTP
*
Maintenance access terminal (MAT).
EFFECTIVITY BEJ ALL 23-27-00
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777 AIRCRAFT MAINTENANCE MANUAL
DCMS -COMPONENT LOCATIONS -FLIGHT DECK
EFFECTIVITY BEJ ALL 23-27-00
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DCMS -COMPONENT LOCATIONS -MAIN EQUIPMENT CENTER
DCMS Component Locations
The DCMS components in the main equipment center are the data communication management function (DCMF) and flight deck communication function (FDCF) software in the AIMS cabinets.
The DCMF and FDCF are in the AIMS core processor module/ communications (CPM/Comm) in both the left and right AIMS cabinets.
EFFECTIVITY BEJ ALL 23-27-00
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DCMS -COMPONENT LOCATIONS -MAIN EQUIPMENT CENTER
EFFECTIVITY BEJ ALL 23-27-00
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DCMS -ARINC 429 INPUTS AND ARINC 618 INTERFACES
General
The data communication management function (DCMF) receives data on low speed and high speed ARINC 429 buses. It also receives and sends data on ARINC 618 buses.
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