User's Manual

Page 3–20
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
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).
• Pins marked “1” are signaled by an open circuit—no connection.
• Configuration resulting in all “1’s” is Invalid.
7. User Data I/O Mode Pin Strapping – Stand-Alone
Data I/O Mode Pin strapping is only required for HSD transceivers models
with Data I/O Type 2 installed (PN 1110-A-0150 and 1110-A-0160) or other
HSD models that have Data I/O Type 2 cards installed via Service Bulletin,
1110-SB-0004.
The following settings allow placing restrictions on the way both channels are
used. If the user has no specific requirements then it is recommended to leave
both channels as “Unrestricted.”
In HSD transceivers with two channel cards, both channels are accessible
for Swift64 Mobile ISDN via the ISDN port on a first come-first served basis.
All modes, as detailed in
Table 3–8, are also described in Figure 3–7.
In units where all Data I/O services are available (including Ethernet), the
following statements are valid:
• The channel cards are pooled, which means that no particular card is
operated in one of the selected modes.
• If one channel card becomes inoperative, and there is a conflicting
configuration (for example, 1 Reserved, 1 SCPC – for Swift64 Mobile
ISDN), then the remaining card operates in "Unrestricted" mode.
Table 3–7. Stand-Alone System Mode Pin Strapping – Stand-Alone
System Modes
Pin Status
TP4A TP4B TP4C TP4D
1234
INVALID 1111
Stand Alone 0101
Selective, SAT-906 1101
Selective, MCS-30001011
Selective, MCS-60001001
Selective, MCS-70000111
Honeywell Combined1110
Reserved 1100
Collins Cooperative 0011
Multi-Channel 0001