User's Manual

Page 1–38
18 September 2007
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion™ HSD-128 High-speed Data Terminal
The user has the option to select the service type needed—either circuit-switched
data (Swift64 Mobile ISDN) or MPDS. The HSD also supports three or more
simultaneous voice or 14.4 kbps fax calls when not being used in data mode—
depending on the number of additional HSD-X transceivers installed.
(2) Installation Modes and Configurations
(a) Stand-Alone Mode Systems
In Stand-Alone Mode, the HSD transceiver controls both the HPA and antenna.
The system supports one channel of Swift64 Mobile ISDN and one channel of
Swift64 MPDS or two channels of Swift64 Mobile ISDN or two channels of MPDS.
For details, refer to the system block diagram.
(b) Non-Stand-Alone Mode Systems
In Non-Stand-Alone configuration modes, the HSD hardware acts as the High
Gain Antenna HPA for Aero H/H+ calls and provides one or two channels of
Swift64 communications. In these configurations, the Aero H/H+ system provides
the system interface to the aircraft antenna subsystem. The radio frequency (RF)
from the HSD transceiver and the Aero H/H+ system is combined in the HSD.
The receive RF from the antenna sub-system is split before being presented to
the Aero H/H+ and HSD transceivers.
1. Cooperative Mode Systems
HSD transceivers installed in Cooperative Mode configurations operate with
a SAT-906 SATCOM system. The HSD hardware is installed in the SAT-906
HPA equipment position. A communications link between the SAT-906
system and the HSD transceiver coordinates the use of the HPA.
An external splitter “splits” the antenna RF receive (Rx) signal path to both
the HSD and the SAT-906 SATCOM systems. The antenna is controlled by
the SAT-906 system’s SDU.
This system configuration provides one channel of Swift64 Mobile ISDN,
MPDS high-speed data, or Aero H/H+ communications. Simultaneous
Swift64 and Aero H/H+ calls are possible. Swift64 HSD calls proceed even if
an Aero H/H+ incoming or outgoing call is in progress providing there is
sufficient HPA power available to process all of the calls.
To use ARINC 429 data from the Collins SAT-906 SDU, the minimum
requirement for HSD control-card software is version 4.5 (or later). Version
4.5 control-card software is available via HSD service bulletins:
1110-SB-0001 and 1110-SB-0003. The recommended software version for
optimum system performance is version 7.5 or later. Version 7.5 is available
via service bulletin, 1110-SB-0015.
The SAT-906 SDU must have core software –068, including service bulletins
31 and 501, which change the unit to a –150 designation and include wiring
SDU pin TP12E grounded to indicate that the SDU is operating with an HSD.
To achieve the current “best system” operation performance, incorporate
EMS SATCOM service bulletin 1110-SB-0015. At the time of writing,
Cooperative Mode installations only support single-channel card
configurations. If installing a dual-channel HSD-128 transceiver in a
Cooperative Mode environment, the HSD EEPROM parameters must be