SNAA416A April   2025  – June 2025 LMK3C0105-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Test Setup
    1. 2.1 Board Variation Summary Table
    2. 2.2 Schematics
    3. 2.3 Layouts
    4. 2.4 Stack-Up
  6. 3CISPR-25
    1. 3.1 CISPR-25 Summary
    2. 3.2 CISPR-25 Results
      1. 3.2.1 Monopole
      2. 3.2.2 Bi-Conical
      3. 3.2.3 Log-Periodic
      4. 3.2.4 Horn
  7. 4CISPR-32
    1. 4.1 CISPR-32 Summary
    2. 4.2 CISPR-32 Results
  8. 5Summary
  9. 6References
  10. 7Revision History

4 CISPR-32

CISPR-32 is the Industrial standard for EMI. One JB3 antenna is used to cover the 30MHz to 3GHz range for the X, Y, and Z axes.

Note: New CISPR-32 standards require measurements up to 6GHz. These measurements are scheduled to be taken at a later date.

CISPR-32 limits are defined by certification class, with Class A being the least stringent, and Class B being the most stringent. All limits specified in this test report are Class B.

Limits for maximum allowed EMI impact are specific to individual frequency bands. For example, 30MHz to 230MHZ has a Class B Quasi-Peak limit of 40dBuV/m, and a Class A limit of 50dBuV/m.


CISPR-32 Test Chamber Setup

Figure 4-1 CISPR-32 Test Chamber Setup