User's Manual

Page 3–69
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
Note: The logic for the System Configuration pins is reverse to the logic
explained in ARINC 741 Characteristic Attachment 1-4, Note 19. For
System Configuration pins, 0=strapped to common and 1=open.
• Pins marked “0” are signaled by strapping to “Fwd Address
Common” (T7K).
• Pins marked “1” are signaled by an open circuit—no connection.
• Configurations resulting in all “1’s” are invalid.
6. System Mode Strap Pins Coding
– Multi-Channel
The HSD transceiver must be externally strapped according to its intended
operational configuration mode.
Table 3–37 illustrates the system pin
strapping for all HSD operational modes and configurations.
Note: The logic for the System Mode pins is reverse to the logic explained
in ARINC 741 Characteristic Attachment 1-4, Note 19. For System
Mode pins, 0=strapped to common and 1=open.
• Pins marked “0” are signaled by strapping to “Fwd Address
Common” (TP7K).
Table 3–36. Configuration Pin Summary – Multi-Channel
Pin # Name Function
TP4A to D System Config #1 to #4 System Mode (See Table 3–27)
TP4E to H System Config #5 to #8 Not assigned (set to"1")
MP5G to K Data I/O Config #1 to #4 NOTE: Data I/O Mode (See Table 3–28)
MP6G to K Data I/O Config #5 to #8 Not assigned (set to"1")
Table 3–37. System Mode Pin Strapping – Multi-Channel
System Modes
Pin Status
TP4A TP4B TP4C TP4D
1234
INVALID 1111
Stand Alone 0101
Selective, SAT-906 1101
Selective, MCS-3000 1011
Selective, MCS-6000 1001
Selective, MCS-7000 0111
Honeywell Combined 1110
Reserved 1100
Collins Cooperative 0011
Multi-Channel 0001