Avionics News January 2012 - 65

After an application setup is defined, the LynxCom-Pro software is used to permanently download the configuration into a Lynx Protocol Converter unit. The LynxCom-Pro software can also be used to troubleshoot the unit configuration in the laboratory because of its ability to simulate MIL-STD-1553B or ARINC 429 data inputs and observe the output of the Lynx Protocol Converter unit.

• BCD SSM related (per ARINC 429). • Floating point. The floating point formats supported are generic with user selectable formulas, exponents and bias. Some representative formats supported are as follows:

BACKGROUND

When adding COTS equipment to aircraft utilizing a MILSTD-1553B “1553B” databus, it is often required that data from the 1553B bus be made available in the ARINC 429 “ARINC” databus format. A possible approach is to use a COTS data converter to perform this function. The COTS data converter could act as a 1553B bus monitor, extract parameters such as position or velocity from the 1553B bus, convert the data into the ARINC format, and then transmit the parameters in a timely fashion on one or more ARINC busses. This conversion task, while on first appearance very straightforward, requires a number of special capabilities (all provided by the Lynx Protocol Converter unit). These capabilities include: • Handle input rates different from the output rates. • Change the number of bits, the bit alignment and the bit resolution from input to output. • Change engineering units from input to output (for example, semi-circles to degrees, feet/second to feet/minute, feet to nautical miles, seconds to hours:minutes:seconds). • Convert multiple-word input parameters to single-word output parameters. • Monitor data validity bits for each parameter and set the sign/status matrix for each corresponding ARINC 429 label. • Suspend transmission of individual ARINC 429 labels if 1553B data is not present for more than a specified number of seconds. Since it has the built-in functionality to handle the above tasks, the Lynx Converter unit can be quickly configured for an integration effort. As incoming and outgoing data can be required in many formats, the Lynx Converter unit can transfer data in the following formats: • Un-signed binary. • Two’s-complement. • Sign-magnitude. • Binary coded decimal signed. • BCD unsigned.

Once integration testing proceeds one may often discover subtleties, such as some required parameters are not available from the same source address on the MIL-STD-1553B databus during the entire flight regime and at a fast enough update rate. For example, parameters might be available from different source addresses, but with the following characteristics: 1. The required input rate of 25 Hz can be acquired from a
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Table of Contents for the Digital Edition of Avionics News January 2012

Point of Communication
AEA Now
The View From Washington
International News and Regulatory Updates
Rockwell Collins' Fusion Upgrades
Member Profile
Where Are They Now?
Before & After
Next Step in the GPS Battle
A Conversation With...
Touchscreen Avionics: Training Required
Sounding Off On Audio Panels
Member Profile
Advertisers Index
Aviation Aces
Business Basics
Meet the AEA Board
Theory & Practice
Legal Ease
Special Report
What's New
Marketplace Classifieds
Avionics News January 2012 - Cover1
Avionics News January 2012 - Cover2
Avionics News January 2012 - 1
Avionics News January 2012 - 2
Avionics News January 2012 - 3
Avionics News January 2012 - Point of Communication
Avionics News January 2012 - 5
Avionics News January 2012 - AEA Now
Avionics News January 2012 - 7
Avionics News January 2012 - 8
Avionics News January 2012 - 9
Avionics News January 2012 - 10
Avionics News January 2012 - 11
Avionics News January 2012 - 12
Avionics News January 2012 - 13
Avionics News January 2012 - The View From Washington
Avionics News January 2012 - 15
Avionics News January 2012 - International News and Regulatory Updates
Avionics News January 2012 - 17
Avionics News January 2012 - 18
Avionics News January 2012 - 19
Avionics News January 2012 - Rockwell Collins' Fusion Upgrades
Avionics News January 2012 - 21
Avionics News January 2012 - 22
Avionics News January 2012 - 23
Avionics News January 2012 - Member Profile
Avionics News January 2012 - 25
Avionics News January 2012 - 26
Avionics News January 2012 - 27
Avionics News January 2012 - Where Are They Now?
Avionics News January 2012 - 29
Avionics News January 2012 - 30
Avionics News January 2012 - Before & After
Avionics News January 2012 - Next Step in the GPS Battle
Avionics News January 2012 - 33
Avionics News January 2012 - A Conversation With...
Avionics News January 2012 - 35
Avionics News January 2012 - Touchscreen Avionics: Training Required
Avionics News January 2012 - 37
Avionics News January 2012 - 38
Avionics News January 2012 - 39
Avionics News January 2012 - Sounding Off On Audio Panels
Avionics News January 2012 - 41
Avionics News January 2012 - 42
Avionics News January 2012 - 43
Avionics News January 2012 - Member Profile
Avionics News January 2012 - 45
Avionics News January 2012 - 46
Avionics News January 2012 - Advertisers Index
Avionics News January 2012 - Aviation Aces
Avionics News January 2012 - 49
Avionics News January 2012 - 50
Avionics News January 2012 - 51
Avionics News January 2012 - Business Basics
Avionics News January 2012 - 53
Avionics News January 2012 - 54
Avionics News January 2012 - 55
Avionics News January 2012 - Meet the AEA Board
Avionics News January 2012 - 57
Avionics News January 2012 - 58
Avionics News January 2012 - 59
Avionics News January 2012 - Theory & Practice
Avionics News January 2012 - 61
Avionics News January 2012 - Legal Ease
Avionics News January 2012 - 63
Avionics News January 2012 - Special Report
Avionics News January 2012 - 65
Avionics News January 2012 - 66
Avionics News January 2012 - 67
Avionics News January 2012 - 68
Avionics News January 2012 - 69
Avionics News January 2012 - What's New
Avionics News January 2012 - 71
Avionics News January 2012 - 72
Avionics News January 2012 - 73
Avionics News January 2012 - Marketplace Classifieds
Avionics News January 2012 - 75
Avionics News January 2012 - 76
Avionics News January 2012 - Cover3
Avionics News January 2012 - Cover4
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