User's Guide

DRAFT
Page 1-4
17 Mar 2016
23-15-87
© Honeywell International Inc. Do not copy without express permission of Honeywell.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
The terms Secure ORT and User ORT are consistent with the industry terminology as defined in
the ARINC 781-4 Characteristic. For the Boeing aircraft, the following terms are used:
- Options Selection Software (OSS) = Secure ORT
- Airline Modifiable Information (AMI) = User ORT.
3. Equipment Specifications
This section includes the physical and environmental characteristics of the A781-500 SDU and SCM.
Table 1-1 provides a summary of the physical characteristics and equipment specifications of the SDU
component.
Table 1-1. SDU Physical Characteristics and Specifications
CHARACTERISTIC SPECIFICATION
RELATED DOCUMENTS
ARINC characteristics ARINC 781-4 Mark 3 Aviation Satellite Communications
System
ARINC 600 Air Transport Avionics Equipment Interfaces
RTCA documents DO-178B, Software Considerations in Airborne Systems
and Equipment Certification
DO-160E, Environmental Conditions and Test
Procedures for Airborne Equipment
SDU SPECIFICATIONS
Physical size
Length 14.46 inches (36.73 cm)
Width 7.68 inches (19.51 cm)
Height 7.71 inches (19.58 cm)
Weight 24.9 pounds (11.30 kg)
Heating and cooling
Cooling air ARINC 600
Flow rate 28.16 oz//hr 104°F (50 kg/hr 40°C) (max) air
Pressure drop 0.2 ± 0.12 inH
2
O ( 5 ± 3 mmH
2
O)
Mounting information 6 MCU tray as per ARINC 600
Electrical interfaces
Power/control interface as per ARINC 781
Power requirements
Input voltage (AC) 100 VRMS to 122 VRMS AC, 300 to 900 Hz
Power consumption 400 VA
DRAFT as of
4 Mar 2016