User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 1-10
3 JUN 10
4. System Interfaces
This section briefly describes the external HSD-440 Mark 2 Terminal system interfaces required
to control, monitor, maintain, and supplement the terminal. "Installation" on page 3-1 provides
a detailed description of interface connections.
Figure 1-3 shows the system interfaces of the HSD-440 Stand-Alone terminal.
Figure 1-3
HSD-440Stand-Alone Terminal Interfaces
A. Central Maintenance Computer (CMC)
The CMC can include a video display system and
keyboard or it can interface with a
separate multi-purpose control display system, such as an MCDU. The HSD-440 Mark
2 Terminal supports CMC interfaces defined in ARINC 741 Part 1 Appendix 1, with minor
customization as required.
The CMC receives BITE data using the standard ARINC 429 maintenance words from
all subs
ystems attached to it. In turn, the CMC broadcasts data, such as time, date, flight
number, flight phase, and aircraft ID, that the HSD-440 Mark 2 Terminals attached to it
can use to log events.
The CMC enables you to query the equipment attached to it for BITE data and control
the syst
ems attached to it.