Known Good Board. This is a fully populated and tested printed circuit assembly that operates exactly to specification. Technicians and engineers use a KGB as a reference standard to compare signals, voltages, and behaviors when troubleshooting defective units from the same production run.
Heard on the job
I can't replicate the failure on the bench. Grab the KGB and let's probe the power rails side-by-side.
Also heard as
- golden board
Related terms
Golden board
Known-good assembled board kept as the reference for testing, comparing and debugging others.
Bone pile
Stack of failed or rejected boards waiting for diagnosis and repair, or for scrapping.
Bring-up
Methodical first power-up and debugging of a new board, section by section, until everything works.