bus) weapons. H009 (also called MacAir H009), introduced by McDonnell in 1967, was one of the first avionics data buses. It is a dual redundant bus controlled by a Central Control Complex (CCC), with up to 16 Peripheral Units (PUs), synchronously communicating using a 1MHz clock. H009 was used in early F-15 fighter jets, but due its noise sensitivity and other reliability issues was replaced by MIL-STD-1553. Development tools When developing or troubleshooting for MIL-STD-1553, examination of the electronic signals is useful. A logic analyzer with protocol-decoding capability, also a Bus analyzer or protocol analyzer, are useful tools to collect, analyze, decode and store the waveforms of the high-speed electronic signals. Hardware Intel M82553 Protocol Management Unit (PMU) using the CHMOS III technology. This device meets full bus interface protocol standard. See also MIL-STD-1760 MIL-STD-704 Aircraft flight control systems Fly by wire Avionics Full-Duplex Switched Ethernet (AFDX) – a faster Ethernet-based technology ARINC 429 Commercial Avionics Counterpart Bus Coupler – A brief description of Bus Coupler. TTEthernet – Time-Triggered Ethernet SAE AS6802 Time-Triggered Ethernet SpaceWire Sources MIL-STD-1553C: Digital Time Division Command/Response Multiplex Data Bus. United States Department of Defense, February 2018. SAE AS15531: Digital Time Division Command/Response Multiplex Data Bus. SAE AS15532: Data Word and Message Formats. SAE AS4111: RT Validation Test Plan. SAE AS4112: RT Production Test Plan. References External links MIL-STD-1553, Digital Time Division Command/Response Multiplex Data Bus. United States Department of Defense, February 2018. MIL-STD-1773, Fiber Optics Mechanization of an Aircraft Internal Time Division Command/Response Multiplex Data Bus. United States Department of Defense, October 1989. MIL-STD-1553 Tutorial from AIM, Avionics Databus Solutions, Interface Boards for MIL-STD-1553/1760 MIL-STD-1553 Tutorial from Avionics Interface Technologies (registration required) MIL-STD-1553 Tutorial (video) from Excalibur Systems Inc. MIL-STD-1553 Couplers Tutorial (video) from Excalibur Systems Inc. MIL-STD-1553 Tutorial by GE Intelligent Platforms (registration required) MIL-STD-1553 Tutorial and References from Ballard Technology (includes MIL-STD-1553B & MIL-HDBK-1553A Notice2) MIL-STD-1553 Designer's Guide from Data Device Corporation MIL-STD-1553 Tutorial and Reference from Alta Data Technologies INTRODUCTION TO THE MIL-STD-1553B SERIAL MULTIPLEX DATA BUS by D. R. Bracknell, Royal Aircraft Establishment, Farnbourogh, 1988. Introduction to MIL-STD-1553 Short Course from Georgia Tech Professional Education MIL-STD-1553 Complete online reference from Data Device Corporation Military Computer with MIL-STD-1553 Interface from AMDTEC Defence Avionics Military of the United States standards Serial buses Aviation standards