April 2021

In This Issue

The April issue of In Compliance concentrates on Communications.

Design Considerations in Spread Spectrum Modulation for CISPR 25/CE Testing
Discussing Factors that Influence the Design of Spread Spectrum Modulation for CISPR 25 Measurement
By Christopher Semanson
In this article, we establish design guidelines of a spread spectrum modulation circuit as it relates to CISPR 25.

MIL-STD-464D: A Review of Recent Changes
A Long-Awaited Update to an Essential Standard for Military Procurement
By Ken Javor
In this article, we detail the key changes between MIL-STD-464C and MIL-STD-464D, the recently-released update to the standard.

How Grounds Affect the Peak Voltage Due to Lightning
Why the Most Common Characterization of a Ground Rod May Not Work for Lightning
By Albert R. Martin
The most common characterization of ground rods actually differs from what is observed in the case of lightning. This article discusses what is observed and how that affects ground rod performance.

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