Bench test

bench testing the Kollsman Vertical Speed Indicator with Resolution Advisory

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EQUIPMENT REQUIRED

what equipment is needed to test this instrument

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TEST SETUP

describe how to set up the test

Possible useful ARINC words, generic TCAS ARINC labels, per a quick google search

• 270: TCAS Vertical Resolution Advisory Data Output Word. It carries dedicated discrete information (e.g., bit functions detailing "Climb" or "Descend" RAs and vertical speed limits).

• 273: Additional discrete word mapped specifically for Resolution Advisory displays, controlling specific command indicators on primary flight instruments (like the VSI).

• 274: Traffic Display Data, Discretes, Sends traffic advisory status and display commands.

• 371: Barometric Altitude Rate, BNR, Rate of climb or descent used to calculate vertical speed.

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PIN CONNECTIONS

what pins need to be connected, and to what?

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LAB LOG

5/21/26 - initial research and WDM tracing