Common Errors in Dielectric Measurement (And How to Avoid Them)
An engineer runs the same material sample through a dielectric characterization setup twice in one afternoon and gets two different permittivity values. Nothing about the material changed. The VNA calibration was done that morning, the fixture looked fine, and yet the numbers drifted just enough to throw off a process optimization model. This is one […]
How Does a Fiber Optic Coupler Work? A Clear Guide to Types, Function, and Real-World Use
Picture a technician standing over an open equipment rack at 2 a.m. Somewhere between the light source and the detector, a signal that should be strong and steady is showing up weak on one channel and fine on another. Nothing is unplugged. Nothing looks broken. The culprit, more often than not, hides inside a tiny […]
Best Practices for Accurate Temperature Monitoring in MRI Safety Testing – What Actually Works in Real Labs
If you walk into any MRI testing lab, you’ll notice something quickly. The equipment and setup may look highly controlled, but the measurement process itself is anything but simple. In MRI safety, you are looking for total temperature change of less than 2 degrees C so 0.1°C accuracy is needed. Measuring temperature inside an MRI […]