Articles

A board bring-up method from the mechanic's no-start check: verify reset, power, clock and code in that order, with the instrument that can see each one, before chasing SerDes, PCIe or DDR.

How via stubs in a thick backplane act as quarter-wave resonators that notch a 10GBASE-KR link, how error counters sorted by via exit layer found them, and how back-drilling, routing and antipads fix them.

Mixed-signal grounding for EMC: why return current follows the trace, how a split ground plane turns a crossing trace into an antenna that fails RE102, and how one ferrite at one crossing fixes it.

A white paper on a harmonic-comb DSP filter that removes 10 to 22 dB of wind from onboard race audio, locked to the engine fundamental with GPS speed and the car's gear ratios, validated on a Spec Racer Ford at Sebring.

How VPX system management works: what the IPMC on each plug-in module does, how it talks to the Chassis Manager over IPMB-A and IPMB-B, and what to look for when you choose one.

What each VITA 46.11 IPMC tier adds, from the Tier-1 mandatory commands to Tier-2 events and the Tier-3 System Event Log, and how to pick the tier your VPX module needs.

What writing avionics firmware in Rust changes for a DO-178C program: the error classes the compiler removes, what it does not remove, and how the toolchain fits the certification plan.