# Calibration and traceability ### How do we maintain NIST traceability? We have deployed 2 policies to maintain the NIST traceability. We use digital temperature sensors, which are manufactured by Texas Instrument (TI). TI works according to its own Quality Control Plan and maintains calibration equipment traceable to NIST. Besides, Cydiance processes 3 points calibration inspection at the PCBA stage, with its equipment calibrated by accredited NVlap laboratories and a sampling base according to AQL0.25 General I. All records are input into the ERP system and are presented in the manufacturer's COC. ![NIST traceable equipment and manufacturer's COC](/files/GdqEVQPxeXBEBYB0f04G) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://doc.cydiance.com/faq/calibration-and-traceability.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.