ARINC 542A : 1988

1.0 PURPOSE OF THIS DOCUMENT
1.1 Purpose of This Document
1.2 Related Documents
1.3 System Functions
1.4 Unit Functions
1.5 Reliability and Maintainability
1.6 Interchangeability
1.7 Regulatory Approval
2.0 INTERCHANGEABILITY STANDARDS
2.1 Importance of Interchangeability
2.2 Form Factors and Connectors
2.3 Input and Output Signal Characteristics
2.4 Standard Interwiring
2.5 Power Circuitry
2.6 Weights
2.7 Environmental Specification
2.8 Abnormal Conditions
3.0 SYSTEM DESIGN
3.1 General
3.2 System Interwiring
3.3 Units
3.4 Data Sources
3.5 Data Multiplexing
3.6 Input Circuit Protection
3.7 System Accuracy
3.8 Monitor Output
3.9 Power Malfunction Indication
3.10 Trip and Data Encoder
3.11 Recording Time
3.12 Additional Binary Recording Channels
4.0 STANDARD SIGNAL CHARACTERISTICS
4.1 General
4.2 Heading Sensors
4.3 Accelerometers
4.4 Data Characteristics
4.5 Sensor Inputs
4.6 Elapsed Time
ATTACHMENTS
Attachment 1 - FAA Required Data Parameters
Attachment 2 - Connector Locations
Attachment 3 - Front Panel Hose Connectors
Attachment 4A - Remote Acceleration Sensor
Attachment 4B - DC Acceleration Form Factor
Attachment 5-1 - ARINC 542A FDR Standard Interwiring
Attachment 5-2 - Notes to Standard Interwiring
Attachment 6 - Typical Data Characteristics
Attachment 7 - DC Accelerometer Pin Assignments
Attachment 8 - Programmable Input Wiring
APPENDICES
Appendix 1 - DC Accelerometer Design

Describes requirements necessary to accommodate mandatory flight data recording and other flight data acquisition needs plus the design details necessary to ensure customer controlled interchangeability of equipment in a standard aircraft installation.