User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 3-10
3 JUN 10
Figure 3-4 Remote
LED Panel Circuit
(7) System Configuration Strapping
The HSD-440 Mark 2 Terminal adjusts its conf
iguration according to the status of
several strap pins on the rear ARINC 600 connector.
Configuration pins are assigned based on syste
m mode configuration selection and
data I/O requirements, as shown in Table 3-4. Detailed pin assignme
nt is shown in
Table 3-5.
Table 3-4 Configuration Pin Summary
Pin Number Name Function
TP4A to D System Config 1 to 4 System Mode Strap Pins
MP5G to K I/O config 1 to 4 Not assigned (set to 1)
NOTE: The logic for the System Configuration pins is reverse to the logic explained
in ARINC 741 Characteristic Attachment 1-4, Note 19.
• Pins marked 0 are signaled by strapping to Address Common (TP7K).
• Pins marked 1 are signaled by an open circuit-no connection.
• Configurations resulting in
all ones (1) are invalid.
(8) System Mode Strap Pins Coding
The HSD-440 Mark 2 Terminal must be exter
nally strapped according to its intended
operational configuration mode. Table 3-5 illustrates the system pin strapping for
currently supported HSD-440 Mark 2 Terminal operational modes and
con
figurations.