Author Archives: Khanh Nguyen
Bench DMM Calibration: What a 6½-Digit Multimeter Test Actually Covers
What an accredited 6½-digit bench DMM calibration actually covers: 40–100 test points, artifact calibration vs...
Spectrum Analyzer Calibration Guide: What’s Verified, Cost, and How Often
TL;DR: Spectrum analyzer calibration verifies frequency accuracy, amplitude accuracy, attenuator and reference-level switching, resolution bandwidths...
Infusion Pump Analyzer Calibration: How to Keep IV Pump Testing Accurate
How an infusion pump analyzer (IDA) is calibrated: gravimetric flow references, occlusion pressure standards, IEC...
Oscilloscope Calibration Guide: What’s Checked, Cost, and How Often
TL;DR: Oscilloscope calibration verifies six parameter families against NIST-traceable standards: vertical (amplitude) accuracy, timebase accuracy,...
ESU Analyzer Calibration: An ISO/IEC 17025 Guide for Biomedical Teams
What an ISO/IEC 17025 ESU analyzer calibration verifies — HF power, RF current, crest factor,...
Calibration Terms Glossary: TUR, CMC, Guard-Banding & 9 More, in Plain English
TL;DR: Twelve terms carry most of the meaning on a calibration certificate: as-found/as-left, tolerance, out...
Instrument Out of Tolerance? The 6-Step Response Playbook
TL;DR: When an instrument comes back out of tolerance (OOT), follow six steps: quarantine the...
How to Read a Calibration Certificate: The 8 Fields That Matter
TL;DR: A calibration certificate worth filing contains eight things: the lab’s accreditation identity, a unique...
What Is NIST-Traceable Calibration? The Traceability Chain Explained
TL;DR: NIST-traceable calibration means your instrument’s results connect to US national measurement standards through an...
VNA Calibration Kit Verification: How to Keep SOLT Standards Traceable
How to verify a VNA calibration kit: pin depth gauging, torque, verification kits, and recalibration...