Compliance

CISPR 11 / EN 55011: DC power power ports: What frequency to measure at?

Categories: EMC, Electronics, Compliance

Uli Köhler

2026-01-11 1 min read

CISPR 11 / EN 55011 : What measurement distance for Class A and Class B?

Categories: EMC, Electronics, Compliance

Uli Köhler

2026-01-10 1 min read

CISPR 11 / EN 55011 : What is a 'small EUT'?

Categories: EMI, Electronics, Compliance

Uli Köhler

2026-01-10 0 min read

What is 'Group 1' and 'Group 2' according to EN55011 / CISPR11

Categories: Electronics, EMC, Compliance

Uli Köhler

2026-01-07 1 min read

Up to what frequency does radiated emissions need to be tested (CISPR 11 / EN55011)?

Categories: Compliance, Electronics, EMC

Uli Köhler

2026-01-07 2 min read

Diagnosing I2C issues using an oscilloscope: Slow rising edge, fast falling edge

Categories: Compliance, Electronics, Embedded

Uli Köhler

2021-12-06 1 min read

How should the SPI SCLK look on the oscilloscope?

Categories: Compliance, Electronics, Embedded

Uli Köhler

2021-12-05 1 min read

What 1500pF 1kV capacitor should you use for Ethernet termination?

Categories: Compliance, Electronics, EMI

Uli Köhler

2021-07-28 1 min read

Why do medical devices need 2xMOPP?

Categories: Compliance, Electronics, Medical Devices

Uli Köhler

2021-05-15 1 min read

What is a SELV power supply?

Categories: Compliance, Electronics

Uli Köhler

2019-08-15 2 min read