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Page 4–105
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
5.
Modification History
Table 4–28 lists the modification history for the HSD transceiver. This history is provided to 
aid the technician in understanding the reason for issuing a service bulletin and to describe 
the changes to the equipment.
 Table 4–28. Modification History
Service Bulletin
Description of Modification
1110-SB-0001/A
Upgrades channel card software to version 3.0. Upgrades the control 
processor software to version 4.4. Upgrades accommodate Inmarsat 
system change and fix software bugs.
1110-SB-0002/A
HPA Mute and ARINC 429 driver repair hardware modification. 
Backplane modification to the HPA wiring harness corrected the reverse 
biasing of the Mute lines affecting all units installed with a Ball 
dual-conformal-array antenna.
1110-SB-0003/A
Resolves problems with Cooperative Mode operation
1110-SB-0004/A
Hardware upgrade to install Data I/O Type 2 card
1110-SB-0005/B
Upgrades the hardware for Honeywell Combined Mode (HCM) to 
include a RF detector and a variable attenuator on the Aero H path of 
the pre-HPA combiner and allows the reading and control of this 
attenuator through a serial connection to the combiner. The control 
processor code is upgraded to include processing of the attenuator 
settings in the power control algorithm and to allow setting of the 
attenuator as part of the combined operation. 
This version does not support Cooperative Mode (with SAT-906).
1110-SB-0006/A
Channel card software upgrade to support MPDS 
1110-SB-0007/A
Upgrades the HSD-128 Control Processor software to version 6.5. This 
version adds the Multi-Channel capability to the HSD-128 software to 
support HSD-128 units integration with external
 
HSD-X channels (PN 1110-A-0401).
1110-SB-0010/A
Hardware upgrade to dual-channel for single channel card transceivers
1110-SB-0011/B
Upgrades the Channel Card software to version C35 to fix Cooperative 
Mode bug in Channel Card software version C30. Upgrades software 
to recognize Cooperative Mode System Config hardware strapping. 
1110-SB-0012/A
Upgrades the channel card software to version C41 (6.0) which 
supports enhanced HSD functionality in all modes of operation, 
(including multi-channel configurations) and the use of Inmarsat 
services—including AMBE STU capability. In Cooperative Mode 
systems, MPDS is not supported with this version of software.
Upgrades the control processor software to version 7.0, which 
enhances all modes of operation. Selective Mode units operating 
Category A Inmarsat terminals may experience GPS faults when 
operating this version of software (workaround: deactivate GPS 
protection).
1110-SB-0013/A
Adds software identification label to HSD units