DI-MGMT-81026A

Tempest Control Plan

The Tempest Control Plan describes the management and spectrum control proposed for a development program for an equipment or group of equipments to control and minimize potential Tempest problems.

Approval DateNovember 9, 2018

AMSC Number9994

Preparing ActivityCR

Project NumberMGMT-2018-044

OPR—

DTIC Applicable—

GIDEP Applicable—

Limitation—

Applicable Forms—

Approval Limitation—

Form Version—

DID Formatfree_text

963C CompliantYes

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

Supersedes

DI-S-1828A

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Description & Purpose

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Application & Interrelationship

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Use & Relationship

The Tempest Control Plan describes the management and spectrum control proposed for a development program for an equipment or group of equipments. The Tempest Control Plan is used to control and minimize potential Tempest problems.

1. This Data Item Description (DID) contains the format and content preparation instructions for the data product generated by the specific and discrete task requirement as delineated in the contract.

2. This DID is applicable to all contracts requiring an Electromagnetic Compatibility Control Plan.

3. This DID supersedes DI-S-1828A.

Preparation Instructions

1Format.The Tempest Control Plan format shall be contractor selected. The format used for the initial submission shall be used for all subsequent submissions.

2Content.The Tempest Control Plan shall contain the following:

2.1Management control.This section shall identify the specific organization responsibilities, lines of authority, and control, and the contractor's plan (including milestones) for implementing control. The resumes of the responsible Tempest design engineering personnel shall be contained in this section.

2.2Spectrum Control.This section shall contain a description of how all operationally intended signals from equipment(s) shall be limited to bandwidth and amplitude minimum levels consistent with the design requirements, interface considerations, and accepted engineering design practices. Specific items to be included, along with an explanation for each, are as follows:

2.2.1Functional designator, purpose, and allocation of signal lines external to the equipment.

2.2.2Signal amplitude.

2.2.3Spectral content of signals.

2.2.4Design constraints on external signals.

2.2.5Proposed constraints on external signals.

2.3Mechanical design.This section shall contain a description of how materials and construction methods selected for design provides inherent attenuation to compromising electromagnetic (and acoustic, if applicable) emanations which shall enable the equipment(s) to meet the requirements of the Tempest specification cited in the contract without conflicting with other mechanical requirements. Specific items to be included, along with an explanation for each, are as follows:

2.3.1Type and thickness of metal to be employed in the construction.

2.3.2Construction technique(s)

2.3.3Compartmentalization (RED and BLACK).

2.3.4Filters and isolation amplifiers and buffers including mounting technique and type (mechanical design).

2.3.5RED/BLACK consideration at equipment interface.Access, window, and ventilation ports.

2.3.6Radio Frequency (R.F.) gasketing.Grounding concepts.

2.3.7Mechanical design of any other factors which may affect the Tempest characteristics of the equipment(s).

2.4Electrical/electronic wiring design.This section shall contain a description of the methods used in designing wiring layouts, both internal and external to the equipment(s), such that undesirable radiation and coupling effects are reduced to meet the Tempest requirements. Specific items to be included, along with an explanation for each, are as follows:

2.4.1Functional designator, purposes, and location of critical internal and external signal lines.

2.4.2Line designator and location of external connectors.Determination of line type (RED or BLACK).

2.4.3Physical separation (RED or BLACK).

2.4.4Type of cabling.

2.4.5Grounding concepts.

2.4.6RED/BLACK power distribution considerations.

2.4.7Design of any other wiring factors which may affect the Tempest characteristics of the equipment(s).

2.5Electrical/electronic circuit design.This section shall contain descriptions that apply to all circuits that are capable of generating undesirable signal emanations. Specific items that shall be included, along with an explanation for each, are as follows:

2.5.1Logic type, signal amplitude and signal rise and fall times.

2.5.2RED interface circuitry (input/output area) signal amplitude, signal rise and fall times, and design considerations.

2.5.3Description and isolation characteristics of filters (including input/output impedances), isolation amplifiers and buffers.

2.5.4Shielding and separation, proposed in the design and layout of multi-layer printed circuit boards.

2.5.5Power supply design (RED/BLACK isolation).

2.5.6Placement, grouping, separation, partitioning of circuits.

2.5.7Grounding concepts.

2.5.8Any other circuit design technique which may affect the Tempest characteristics of the equipment(s).

2.6Research and Development Testing.This section shall contain a description of tests designed to verify the effectiveness of proposed control measures, if the tests are required by the contract.

References

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