Electromagnetic interference considerations in instrument design
Abstract
The present investigation is concerned with electromagnetic interference (EMI) considerations affecting the design of a series of portable 100-MHz oscilloscopes. Because of the complexity of the involved considerations, a design goal to cope with EMI must be established in connection with one of the first decisions to be made during the product proposal phase. In establishing this goal, the market must be defined and applicable specifications must be determined. After the EMI limit has been obtained, approaches for implementing it have to be determined, taking into account individually electrical and mechanical design. Power-supply testing can and should be done early. In mechanical design, each opening (for controls or ventilation) is viewed as a source of degradation, and tested individually. Attention is given to the test procedure, cabinet design, CRT shielding, cable design, and final testing.
- Publication:
-
EMC Technology
- Pub Date:
- December 1983
- Bibcode:
- 1983EMCT....2...27A
- Keywords:
-
- Design Analysis;
- Electromagnetic Interference;
- Electronic Equipment Tests;
- Instruments;
- Oscilloscopes;
- Test Equipment;
- Circuit Reliability;
- Electric Power Supplies;
- Electromagnetic Shielding;
- Noise Reduction;
- Reliability Engineering;
- Electronics and Electrical Engineering