User's Guide
Table Of Contents
- Introduction
- System Description
- System Operation
- Testing and Fault Isolation
- Maintenance and Repair
- Appendix A: Return Material Authorization
DRAFT
Page 3-1
17 Mar 2016
23-15-87
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
© Honeywell International Inc. Do not copy without express permission of Honeywell.
INSTALLATION
This section describes the procedures required to install the A781-500 system (SDU and SCM) on an aircraft,
including the following sections:
• Advisories
• Pre-Installation Inspection
• Installation Procedure
• Connection Details
• Owners Requirements Table (ORT)
• Passive Intermodulation (PIM) Test
• Installation and Engineering Drawings
1. Advisories
Before performing any installation procedures, read the safety advisories listed in the Introduction on page
INTRO–4 of this manual.
2. Pre-Installation Inspection
Before installing any A781-500 system, conduct a pre-installation inspection of all parts to make sure that
no damage occurred during shipping.
A. Unpacking and Inspecting Equipment
• Unpack the A781-500 equipment from the shipping containers.
• Verify that the part number displayed on the shipping box and equipment component matches
the model and part number ordered. If components are missing from the shipment, contact the
supplier immediately and report the problem.
• Visually inspect the A781-500 equipment for any shipping damage. If any shipping damage has
occurred, contact the shipping carrier immediately and report the problem.
• Check the A781-500 equipment connectors for corrosion and damage. If damage is noted, do
not apply power to the equipment. Contact the supplier immediately to report the problem.
B. Cabling Notes
Before proceeding with the installation of the A781-500 system, read all cabling notes provided on
the Interconnection and Contact Assignment drawings.
3. Installation Procedure
Only authorized technical personnel, trained in general aviation workmanship, that have a basic
understanding of SATCOM systems should proceed with the following procedure.
Before performing any installation procedures, read the safety advisories listed in "Safety Advisories" on
page INTRO-4 of this manual.
CAUTION: THE A781-500 SYSTEM REQUIRES CONDITIONED AIR PER ARINC781.
DRAFT as of
4 Mar 2016