Honeywell Mark III manual 3 28 Vdc Backup Input Power Requirements, Power Interrupt Requirements

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Nominal	+27.5 Vdc	Nominal	50 Watts
Minimum	+20.5 Vdc	Maximum	100 Watts
Maximum	+32.2 Vdc

5.5.3 28 Vdc Backup Input Power Requirements

The MARK III does not require use of standby 28 Vdc Battery Backup Input Power.

5.5.4 Power Interrupt Requirements

The MARK III shall be capable of continuous operation through any power-off transient under 200 milliseconds. Non-volatile data shall be unaffected by Input Power Loss and does not depend upon a standby 28 Vdc Battery Bus, if the aircraft is so equipped.

HONEYWELL Aerospace Electronic Systems

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Contents Honeywell Aerospace Electronic Systems Honeywell Aerospace Electronic Systems Introduction Mark III CMU OverviewDatalink Capability for Today and Tomorrow Honeywell Datalink Experience, Products, and Services Page Hardware Overview ArincSystem Interfaces Mark III CMU Interfaces DeviceArinc Interface Baseline Specificati GrowthSubnetwork Interfaces Arinc VDR SDU HfdrCMU Arinc 750 VHF Data Radio VDRFlight Deck Devices Interfaces UHFControl and Display Unit CDU Mcdu Midu CDULRU Interfaces Flight Management Computer FMCPerformance Computer PZ Aircraft Condition Monitoring System AcmsOther Interfaces Software Overview MIL-STD-1553BPcmcia OooiCMF VIACMU AOC HGI AMI Fidb Gbst Database DesignCertification Baseline Functionality AOA VDLM2Operations Uplink ProcessingDownlink Processing World RegionsBite System PagesDMT and DLT VDL Mode Growth FunctionalityAPM Data LoadingPcmcia Data Loading Arinc 761 SatcomMil-STD Weather GraphicsRRI Encryption/AuthenticationATN Page Databases FidbGbst Fidb ArchitectureFidb HGI AMI Menus Main MenuMain Menu CDU Main Menu Supporting Regional / Business Jet CDUs ATS Menu System Menu Uplinks Clearance UplinkClearance Message Elements Clearance Message References Reject Reasons Reject Reasons Values Downlinks Diversion Report DownlinkDiversion Reasons Divert Message Elements Print Definition Logic UnitsPreferred Channel Management Oooi Logic UnitRegions US Map Areas Mechanical Design Interconnect CCAInput/Output CCA Power Supply CCAProcessor CCA Spare CCAs Growth Detailed Interface DefinitionMcdu PrntrCMC ADLSDI PGM VHF PGM OooiVOICE/DATA MON SEL CMUMechanical Packaging Unit Weight Unit Connectors and MountsUnit Size Cooling Requirements Environmental Specifications Power Input DO-160D Section Induced Signal Susceptibility DO-160D SectionWaterproofness DO-160D Section Fluids Susceptibility DO-160D Section2 28 Vdc Input Power Requirements Power Requirements1 115 Vac Input Power Requirements 3 28 Vdc Backup Input Power Requirements Power Interrupt RequirementsTechnical Summary