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ELECTROMAGNETIC COMPATIBILITY 

CONTROL PLAN 

COMPOSITE SYSTEM 

SAFSL EXHIBIT 30035 

FOR THE 

MANNED ORBITING LABORATORY 

PROGRAM 

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6 JUNE 1968 

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SAFSL EXHIBIT 30035 

The undersigned has reviewed the document and 

understands the contents to the extent necessary 

to scope subsequent proposals. 

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Section 1 

Section 2 

Section 3 

Section 4 

Section 5 

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CONTENTS 

INTRODUCTION 

1.1 Scope 

APPLICABLE DOCUMENTS 

1 

1 

2 

2. 1 Government 2 

2.2 Contractor . 

2 

2.2. 1 Gemini B Vehicle System Segment 3 

2.2.2 Laboratory Vehicle System Segment 3 

2.2.3 Mission Payload System Segment 3 

2. 2.4 Titan HIM System Segment 3 

2. 2. 5 Photographic System Segment 3 

RESPONSIBILITIES 4 

3.1 EMC Control Board 4 

3'.- 2 MOL Integration Testing 4 

3. 3 Document Review 4 

3.4 Contractor Responsibility 4 

3.4. / Associate Contractor Responsibility 4 

3. 4. 2 Subcontractor Responsibility 4 

3. 4. 3 Segment Integration Requirements 5 

3. 5 VFAB EMC Testing 5 

EMC CONTROL PROGRAM 6 

4.1 Implementation of EMC Requirements 6 

4. 1. 1 System Segment 6 

4. 1. 2 System Segment Interface 6 

4. 1.3 Electromagnetic Environment 6 

4.2. EMC Control Methods 7 

4.2. 1 Conducted Signal Control 7 

4. 2. 1.1 Interface Circuit Isolation 7 

4.2. 1. 2 Interface Electrical Bonding 7 

4. 2. 1. 3 Interfacinc Circuit Compatibility 7 

4. 2. 2 Radiated Signal Control 8 

4. 2. 2. 1 Frequency Management 9 

4. 2. 2. 2 Spectrum Signature 9 

4. 2.3 Electro-Explosive Devices Firing Circuits 10 

QUALITY ASSURANCE 11 

5. 1 Interface Quality Assurance :11 

5.1.1 Responsibilities 11 

5. 1. 2 Test Measurements 11 

5.2 EMC Test Plans 11 

5.2.1 Composite System Tests 11 

5.2. 1.1 Laboratory Vehicle Integration Tests 12 

5.2. 1. 2 Gemini B/Laboratory Vehicle Interface 

Tests 12 
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5. 2. 1. 3 

5. 2.1. 4 

5. 2.1. 5 

5. 2. 2 

5. 3 

5. 4 

Orbiting Vehicle Tests 

Orbiting Vehicle/ T-IIIM Interface 

Tests 

Flight Vehicle Tests 

EMC Qualification 

EED Validation 

Test Reports 

12 

13 

13 

13 

14 

14 

Section 6 

Appendix A 

Appendix B 

Appendix C 

Appendix D 

EMC ANALYSIS 15 

Charter for the MOL Electromagnetic Compatibility 17 Control Board 

Titan HIM System Segment Deviations 18 

General Electric Company Deviations 19 

Eastman-Kodak Company Deviations 20 

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INTRODUCTION 

1. I SCOPE 

The McDonnell-Douglas Corporation (MDC) and the Martin-Marietta Corporation 

(MMC) shall implement this control plan for the MOL composite system. 

Henceforth, MDC in their role of implementing the OV composite Electromagnetic 

Compatibility (EMC) program will be referred to as the OV EMC Integrator in 

this document. Similarly, MMC shall be referred to as the FV EMC Integrator. 

This plan delineates the methods that shall be used by the EMC Integrator to 

ensure the electromagnetic compatibility of the combined system segments 

in a composite MOL System. All system segments must first have been proven 

to be electromagnetically compatible as individual entities. The following EMC 

Control Plans that apply to each MOL system segment are unconnected, but are 

supporting documents to this composite system plan: 

SAFSL 12006 Gemini B Segment Electromagnetic Compatibility Control 

Plan 

SAFSL 21005 Laboratory Vehicle Electromagnetic Compatibility Control 

Plan 

SAFSL 24005 General Electric Company Management Plans for Electromagnetic Interference Control 

SSD-CR-65-334 Electromagnetic Compatibility Control Plan, Titan IILM 

System. 

F-012094RH MOL/DORIAN Program EMC Control Plan 

However, system degment design or procedural deficiencies which could jeopardize 

the electromagnetic compatibility of the areas covered by this plan are directly 

within the control of this plan. 

This plan is concerned with the following: 

a. The system segment EMC Design Control Plans and their relationship to the composite system. 

b. The EMC verification of the flight vehicle and its associated Aerospace Ground Equipment (AGE). 

c. The interface of ambient conducted and radiated electromagnetic 

environment with the Flight Vehicle. 

d. EMC analysis of the MOL composite system. 

All deliverable data and or documentation specified in this exhibit shall be in 

accordance with the respective Contractor's CDRL (DD 1423 or equivalent) as 

detailed by Forms 9. 

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APPLICABLE DOCUMENTS 

P 2.1 GOVERNMENT 

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The following documents are specifications governing Electromagnetic Interference 

and Compatibility for the composite MOL System to extent specified herein. . 

SAFSL Exhibit 30005 Electromagnetic Compatibility -. 

Requirements for Manned SpaceCraft, 

General Specifications for 

(6 June 1968) 

-B -5087B (ASG) Bonding, Electrical, and Lightning 

Projection. for Aerospace Systems 

• A FWTRM - 127-1 Air Force Western Test Range 

Safety Manual (25 February 1966) 

SAFSL Exhibit 30006 General Specifications for Wiring 

Harness in Manned. Spacecraft 

(6 June 1968) 

IFS-MOL-100001 Interface Control Exhibit 

SAFSL Exhibit 20023 

SAFSL Exhibit 30060 

P 2.2 CONTRACTOR 

MOL VAFB Latme-li Operation. 

Requirement's (6 June 1968) 

Maimed Orbiting Laboratories (MOL.) 

Explosive Ordnance System Requirements 

(6 June 1968) 

Each associate contractor or agency has prepared additio.nai documents which 

modify, expand, and clarify the intent or direction of the above Governnilent 

documents, as necessary, to be consistent with their specific MOL System 

segment and contract direction. These associate contractor/agency documents 

support this composite control plan at the system segment level, but are not 

liart•of this plan. The only ti alid requirements in these documents are those 

consistent with 5.A.FSI, Exhibit 30005 plus deviations granted to the specific contractor. In the event there are inconsistencies between the various documents 

for the different system segments (possibly due to granting different deviations), 

the EMC Control Board will resolve these problems and initiate appropriate 

action through the MOL SPO. The following subsections list the specific 1-,01, 

System segment, the responsible associate contractor or agency, and supporting 

documents. 

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• 2. 2. 1 Gemini B Vehicle System Segment 

McDonnell Aircraft Corp. 

SAFSL Exhibit 12006 

Data Item 14TOJIT-205 

2. 2. 2 :Laboratory Vehicle System Segment 

Douglas Aircraft Company 

SAFSL Exhibit 21005 

t 

Gemini B Segment Electromagnetic 

Compatibility Control 

Production Spacecraft Test Plan 

Laboratory Vehicle Electromagnetic 

Compatibility Control Plan 

SAFSL Exhibit 21008 

2.2.3 Mission l'air!o:A „System Segment 

General Electric Company 

SAFSLxlii fit 24Qa5; 

- Ground Test Plan 

- .-General Electric Company Management 

Plans for Electromagnetic Interference 

Control • . 

Mai, SP° approved 

MOL Spa approved 

.2.2.4 Titan HIM System Segment' 

Titan III-M SPO 

SSD-CR-65-334 

EMC Test Plan 

- GrOund Test Plan 

Electromagnetic Compatibility 

Control Plan, Titan IIIM System 

SSD-CR-65-275 System Test Plan, Titan IIIN4 System 

Volume VII, Electromagnetic 

Compatibility (EMC) Test Plan 

MOL/DORIAN - Program EMC Control 

Plan 

Final. EMC Test Plan for the MOL/ DORIAN 

System. 

2. 2. 5 Photographic System Segment 

F-012094RH 

MOL SPO approved 

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SECTION 3 

RESPONSIBILITIES 

P 3.1 EMC CONTROL BOARD 

The EMC Control Board has been established to direct the development of 

the MOL System for electromagnetic compatibility. The charter of the EMC 

Control Board is given in Appendix I of this document. 

T 3. 2. MOL INTEGRATION TESTING 

The OV EMC Integrator shall publish and maintain the OV composite system test 

plan and shall direct the overall composite testing. The FV EMC Integrator 

shall publish and maintain the FV composite system plan and shall direct the 

overall FV composite testing. Each of the associate contractors for the system 

segments shall provide support (personnel and equipment) to perform the 

tests and record the data for their own system segment. The details of the 

support shall be specified in segment EMC test plans. The OV EMC Integrator, 

with the assistance of the associate contractor, shall assemble the data and 

prepare the EMC Telt-Report for the OV composite system. 

T 3. 3 DOCUMENT REVIEW 

The OV EMC Integrator shall review all associate contractor EMC Control Plans 

and EMC Test Plans, system segment level contract end item (CEI) specifications, or equivalent facility contract end item (FCEI) specifications, or equivalent, interface control specifications (IFS), and interface control drawings (ICD) 

that relate to electrical and electronic compatibility. If the documentation 

indicates an actual or impending electromagnetic incompatibility, the OV EMC 

Integrator working through the appropriate interface control working group (ICWG), 

shall request appropriate changes through the EMC Control Board. If an ICWG 

does not exist, the OV EMC Integrator shall request that the MOL SPO convene a 

sub-group meeting of the EMC Control Board, attended by the affected associate 

contractors or agencies, to review a problem and recommend a solution. The 

FV EMC Integrator with the assistance of the associate contractors shall 

assemble the data and prepare the EMC test report for the FV composite system. 

3. 4 CONTRACTOR RESPONSIBILITY 

T 3. 4. I Associate Contractor Responsibility 

The design and demonstration of the electromagnetic compatibility of the various 

MOL system segments is the basic responsibility of the system segment associate 

contractors and will be described in the documents listed in Subsection 2.2. The 

associate contractors and agencies sh.all provide the EMC Integrator with EMC 

Control Plan, EMC Test Plan, technical analyses, and data on its system segment 

and its interface characteristics and with other system segments in sufficient 

detail so that the composite system can be analyzed. If the requests for analysis, 

tests, data, etc., are outside the scope of the agency's responsibility or 

associate contractor's contract, resolution shall be obtained through the EMC 

Control Board by action of the appropriate contracting office. Each associate 

contractor or agency shall designate EMC point of contact for this support of 

the EMC Integrator. 

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P 3.4.2 Subcontractor Responsibility 

Subcontractor EMC activities are a part of the agency or associate contractor's 

sphere of responsibility, and all contact with subcontractors will be through the 

associate contractor or agency unless otherwise directed by the associate 

contractor/agency. 

T 3.4.3 Segment Integration Requirements 

In some areas, associate contractors and agencies are also integrators, i. e. 

the integration of the T-IIIM booster vehicle, the integration of the mission 

payload system segment and laboratory module into the Laboratory Vehicle system 

segment, and the integration of the'Laboratory Vehicle with the Gemini B to form 

the Orbiting Vehicle. Where associate contractors and agencies are integrators, 

they are responsible for ensuring that the electromagnetic interface has been 

correctly identified, compatibility requirements have been fully specified, and 

practical and adequate quality assurance methods have been established for their 

task; they are also responsible for identifying their electromagnetic compatibility 

interface with other units within the MOL composite system through interface 

control documentation; i, e. , interface specificati ons (IFS), and interface control 

drawings (ICD). 

3.5 VAFB EMC TESTING 

EMC testing at VAFB shall be conducted in accordance with the provisions specified 

in SAFSL Exhibit 20023, VAFB Launch Operations Requirements. 

The 6595th Aerospace Test Wing is the operating arm of the SO at VAFB. All EMC 

testing at the launch site shall be performed under the direction of the 6595th Aerospace Test Wing. 

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Section 3 

RESPONSIBILITIES 

p 3.1 EMC CONTROL BOARD 

The EMC Control'Board has been established to direct the development of 

the. MOL System for electromagnetic compatibility. The charter of the EMC 

Control Board is given in Appendix I of this document. 

T 3. 2 MOL INTEGRATION TESTING 

The OV EMC Integrator shall publish and maintain the OV composite system 

test plan and shall direct the overall composite testing. The FV EMC 

integrator shall publish and maintain the FV composite system plan and 

shall direct the overall FV composite testing. Each of the associate contractos 

for the system segments shall provide support (personnel and equipment) to 

perform the tests and`record the data for their own system segment. The 

details of the support shall be specified in segment EMC test plans. The OV 

EMC Integrator, with the assistance of the associate contractor, shall 

assemble the data and prepare the EMC Test Report for the OV composite 

system. 

.T 3.3 DOCUMENT REVIEW 

The OV EMC Integrator shall review all associate contractor EMC Control Plans 

and EMC Test Plans, system segment level contract end item (CEI) specifications, 

or equivalent facility contract end item (FCEI) specifications, or equivalent, 

interface control specifications (IFS), and interface control drawings (ICD) 

that relate to electrical and electronic compatibility. If the documentation 

indicates an actual or impending electromagnetic incompatibility, the OV EMC 

Integrator working through the appropriate interface control working group, 

(ICWG), shall request appropriate changes through the EMC Control Board. If 

an ICWG does not exist, the OV EMC Integrator shall request that the MOL SPO 

convene a sub-group meeting of the EMC Control Board, attended by the affected 

associate contractors or agencies, to review a problem and recommend a solution. 

The FV EMC Integrator with the assistance of the associate contractors shall 

assemble the data and prepare the EMC Test Report for the FV composite system. 

T 3.4 CONTRACTOR RESPONSIBILITY 

3.4.1 Associate Contractor Responsibility 

The design and demonstration of the electromagnetic compatibility of the various 

MOL system segments is the basic responsibility of the system segment 

associate contractors and will be described in the documents listed in Subsection 

2.2. The associate contractors and agencies shall provide the EMC Integrator 

with EMC Control Plan, EMC Test Plan, technical analyses, and data on its 

system segment and its interface characteristics with other system segments 

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in sufficient detail so that the composite system can be analyzed. If the 

requests for analysis, tests, data, etc., are outside the scope of the - 

agency's responsibility or associate contractor's contract, resolution shall 

be obtained through the EMC Control Board by,action of the appropriate 

contracting office. Each associate contractor or agency shall designate 

EMC point of contact for this support of the EMC Integrator. 

P 3. 4. 2 Subcontractor Responsibility 

Subcontractor EMC activities are a part of the agency or associate contractor's 

sphere of responsibility, and all contact with subcontractors will be through the 

associate contractor or agency unless otherwise directed by the associate 

contractor/agency. 

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Section 4 

EMC CONTROL PROGRAM 

p The Composite Systems EMC Control Program is implemented to ensure 

adequacy of design for EMC and to verify this compatibility by demonstrating 

an Electromagnetic Interference Safety Margin (EMISM) in accordance with 

SAFSL Exhibit 30005 requirements. 

P 4. 1 IMPLEMENTATION OF EMC REQUIREMENTS 

Composite Systems EMC relies on adequate implementation of EMC requirements at the system segment levels control of the System Segment's electromagnetic interfaces (conducted and radiated), and incorporation of additional 

corrective design action based on the composite system external electromagnetic environment. 

P 4.1.1 System Segment 

The contractual EMS grequirments invoked on each Associate Contractor 

are implemented as described in the respective EMC Control Plans. This 

will assure that each System Segment will be compatible with itself and 

reasonable assurance that compatibility can be achieved at the Composite 

System Level. 

P 4.1.2 System Segment Interfaces 

Program cost considerations presently allow the use of commercial, offthe-shelf or existing hardware and/or modified versions thereof. This 

precludes 100% compliance with the EMC requirements; therefore, System 

Segment Interfaces will requiv e special attention to assure compatibility 

under these circumstances. 

EMC requirements will be implemented through IFS's and ICD' s by 

incorporating specific requirements in all System Segment Interface 

documents. Resolution of conflicts in interface requirements will be 

accomplished per the procedures specified in IFS-MOL-100001 and/or 

through the EMC Control Board. 

T 4.1.3 Electromagnetic Environment 

The OV EMC Integrator shall evaluate the Composite System external 

electromagnetic environment as specified in Paragraph 4.2.2 and affected 

Associate Contractors 'shall be informed of potential problems. Where 

necessary, further analysis shall be conducted by the affected contractor 

or jointly by affected contractors and corrective action shall be taken. 

Contractual procedures shall be utilized for followup action to modify 

existing requirements or to add new requirements. Where System Segment 

Interfaces are affected, the procedures specified in MOL-IFS-100001 will 

be followed. If the problem cannot be resolved between the contractors, it 

shall be presented to the EMC Control Board for resolution. 

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4.2 EMC CONTROL METHODS 

T 4.2. 1 Conducted Signal Control 

The conducted compatibility of interfacing system segments is ensured when 

the system segments are individually compatible and when the conducted 

interface does not change this compatibility. Because the interface involves 

two or more contractors, the possibility of invalidating the basic compatibility 

of the individual system segments exists. The interfacing contractors shall 

mutually explore, identify, and take applicable action to eliminate all areas of 

potential incompatibility to ensure the probability of achieving successful 

integration. 

The following control methods shall be used for conducted interference to 

increase the probability of a compatible integration. 

-AVE 4.2.1.1 Interface Circuit Isolation 

r- • 

a. Direct conducting paths between sensitive interfacing circuits shall 

be avoided wherever practicable. 

b. Power circuits shall originate and return to the same side of the 

interface. 

c. Power, instrumentation, and control signals shall not share common 

conductors; currents of two or more classes shall not flow in the 

same conductor. 

d. Common conductors shall not be used for two or more power circuits, 

two or more instrumentation circuits, or two or more control 

circuits, unless the compatibility of the shared circuits can be 

established before the system segments are integrated. 

e. Wire shield continuity and shield grounding requirements must 

consider the complete circuit as an entity; the interface shall 

preserve this consideration. 

f. The isolation of wires into categories for the purpose of creating 

wire bundles or harnesses shall be compatible on both sides of the 

interface. 

-AVE 4.2.1.2 Interface Electrical Bonding 

The structural interface shall be electrically bonded to the requirements of 

MIL-B-5087, Class R bonding (rf potentials); flat bonding straps are permitted. 

-AVE 4.2.1.3 Interfacing Circuit Compatibility 

For interconnecting circuitry, the following test and analysis requirements 

shall apply and shall be accomplished at a systems segment level prior to 

acceptance at this level: 

Where the interfacing circuits are classified as susceptible --' 

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b. Receivers: 

Suprious response characteristics for input levels up to and 

including one millivolt. 

Oscillator emission spectrum 'characteristics involving a 

determination of power versus frequency from 14 KHz to 

10 GHz as the receiver is operated. 

Requirements 

Equipment of the composite system segment, which transmits or receives radiated 

RF energy shall have its spectrum signature measured. Each associate contractor 

or agency is responsible for the acquisition, preliminary analysis, and compatibility 

of the spectruM signature of the equipment in its system segment. Data pertaining 

to the individual equipments and the results of preliminary system segment spectrum 

compatibility analysis shall be transmitted to OV EMC Integrator for composite 

system specturm signal analysis. Schedules for submittal of associate contractor 

or agency data shall be established by the OV EMC Integrator with concurrence of 

the associate contractors and agencies. Schedule for submittal of the composite 

system spectrum data shall be established by the OV EMC Integrator and the MOL 

SPO. Any disagreements will be submitted to the EMC Control Board for resolution. 

Use of Nonoperational Antennas 

Wherever technically practicable, the antenna system or dummy antenna used 

during spectrum signature measurements shall have the same characteristics as 

the operational antenna system to realistically present the fundamental and offfrequency impedance characteristics. The off-frequency antenna characteristics 

are of great importance since they usually differ greatly from the primary frequency 

characteristics. The load impedance, in turn, can greatly affect the spurious 

behavior of some electronic equipment. Where test antennas differ from the system 

antenna, a variation will be submitted with the test.plan for approval by the EMC 

Control Board. 

-AVE 4.2.3 Electro-Explosive Devices and Firing Circuits 

For EMC, all electro-explosive devices (EED) and firing circuits shall meet the' 

applicable requirements of SAFSL Exhibit 30005, SAFSL Exhibit 30060, and 

AFWTRM 127-1. 

.The electromagnetic compatibility of the firing circuits for the EED within each 

system segment shall have been ascertained on each system segment prior to 

MOL Composite System integration. Where EED firing circuits pass through the 

interface between system segments, they shall be controlled by the ICD and IFS. 

(1) 

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the susceptibility limits of the interconnected equipment are not 

knoWn or are not measured as a specification requirement, the 

'unknown data shall be obtained for the frequency limits of SAFSL 

Exhibit 30005 or the limits of susceptibility. Malfunction threshold 

data shall exist and the EMISM shall be as specified in SAFSL 

Exhibit 30005. 

b. Where one side of an interfacing circuit is classified as susceptible 

and the other side is classified as a generator of interference and 

both sides of the interface are controlled by different specification 

liMits, the interfacing contractors shall take applicable action to 

achieve compatibility. 

c. For the conditions of (b), where neither side or only one side of the 

interface has available test data, tests or analyses shall be conducted 

to determine interference characteristics, after which the criteria 

of (b) shall apply. 

d. Where both sides of the interface are classified as interference 

generators, the interface circuits must not produce a level of 

interference which would degrade the EMISM of any critical point. 

e. Where both sides of the interface may be classified as interference 

generators and neither side, or only one side, of the interface has 

data available, tests shall be conducted to determine the interference 

characteristics. The criteria of (d) then shall apply. 

The above criteria must be used with discretion. Wherever detailed analysis of 

a circuit or subsystem can show that the level a interference existing on interfacing wire will not affect the operation of the circuit, subsystem, or adjacent 

interface circuits, tests may not be necessary. All circuits and subsystems, 

where analyses are to replace tests, must be identified in the individual EMC 

test plans and require MOL SPO approval. 

The requirements of this paragraph shall be met in the following manner: 

All segment interfacing circuits shall be examined for EMI susceptibility and 

those identified as susceptible shall have the maximum allowable EMI limits 

specified in the appropriate Interface Document. The definition of maximum 

allowable EMI limit is that amount of EMI which both ends of the interfacing 

circuit can tolerate without performance degradation of the equipments or 

systems involved. This maximum allowable EMI shall be considered separately 

but may be within or outside signal tolerance agreements depending on the 

selected method of documentation. 

P 4.2.2 Radiated Signal Control 

The interface between Flight Vehicle subsystems that is used for transmitting 

or receiving radiation, and between these subsystems and nearby AGE and 

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range communication and tracking systems, can have a profound influence on 

their proper operation. For this reason, the fundamental operating frequenties 

and the spurious signal response or generation of radiation systems must be 

carefully controlled by judicious frequency management, strict conservation of 

spectrum bandwidths, control of all generated signals, and harmonic sideband 

control. 

4.2.2.1 Frequency Management 

The'primary frequencies of all vehicle and launch related transmitting and 

receiving equipment shall be coordinated with the OV EMC Integrator. Frequency 

allocations shall be requested from the MOL SPO by the associate contractor 

or agency. 

Frequencies of Existing Equipment 

Compatibility of these predetermined frequencies shall be analyzed by the EMC 

Integrator and changes recommended where necessary. 

New Frequency Requirements 

Where specific frequencies remain to be assigned, the associate contractor or 

agency shall coordinate the request with the OV EMC Integrator. The OV EMC 

Integrator shall determine the impact of this frequency request on the Composite 

MOL System. The associate contractor or agency shall work closely with the OV 

EMC Integrator to select the frequency on the basis of optimum utilization of 

the spectrum, maximum effectiveness for the mission, and minimum interference to other subsystems, equipment, and services. The frequency request 

shall be made by the associate contractor or agency with the concurrence of the OV 

EMC Integrator to the MOL SPO. 

4.2.2.2 Spectrum Signature 

Definition 

Spectrum signature is defined to be the following characteristics of radiating 

transmitter and receiving systems where a system includes the RF unit 

(transmitter or receiver) and its transmission components (cable/waveguide and 

circulator), with antenna or dummy load. 

a. Transmitters: 

Emission spectrum characteristics involving a determination 

of power versus frequency from 14 KHz to 10 GHz as the transmitter is operated (key down). 

Interrn.odulation products where two or more transmitters 

operate into a single transmission system. 

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Section 5 

QUALITY ASSURANCE 

p Quality assurance provisions for composite system electromagnetic compatibility 

tests shall be as specified here and .within the system segment electromagnetic 

compatibility test plans of the associate contractors or agency. 

5. 1. INTERFACE QUALITY ASSURANCE 

The 'methods and criteria used to demonstrate interface compatibility shall be 

determined during the design pahse and become a part of interface documentation. 

T 5. 1. 1 Responsibilities 

If, during the course of integation testing, problems develop across interface 

areas, the EMC Integrators, in cooperation with affected associate contractors 

and agencies shall determine the gross cause of the problem and determine the 

associate contractor(s) or agency(s) responsible for the solution. Recommendation 

will be made by the EMC Integrators to the MOL SPO for implementation of a 

solution. 

T 5. 1. 2 Test Measurements 

Wherever practical, measurements which must be made to determine compatibility 

at the segment interface shall be made without physically or electrically disturbing 

the integrity of the interface. For example, the power quality delivered across 

an interface should be measured at the power bus rather than by inserting a breakout 

connector at the interface. Likewise, the effects of radiated interference or 

susceptibility shall be measured at critical test points within a subsystem rather 

than attempting a measurement of the interference at a physical interface. 

5. 2 EMC TEST PLANS 

The detailed electromagnetic compatibility test plans for each applicable flight 

shall be in accordance with electromagnetic compatibility test plan for composite 

and segment EMC tests and shall be submitted in accordance with CDRL. The 

EMC test plans shall be submitted to the MOL SPO for approval prior to testing. 

Implementation of the various system segments and their interfaces to effect a 

compatible MOL integrated system. 

T 5. 2. 1 Composite System Tests 

Development and qualification testing on individual system segments shall be 

covered in the EMC Control Plan of the particular associate contractor. When 

mating segments are not available, associate contractors shall use electrical 

substitutes wherever possible to test their interface with other system segments. 

Associate contractors' control plans, test plans and test results shall be analyzed 

by the OV EMC Integrator to ascertain and define potential integration 

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problem areas . The MOL SPO shall be apprised of any segment deficiencies 

and problem areas which may affect integration. Composite systems tests 

covered by this plan shall consist of the integration testing of the various system 

segments as they functionally flow together into the Flight Vehicle. 

5.2. 1. 1 Laboratory Vehicle Integration Tests 

The first integration is the integration of the Mission Payload system segment 

with the Laboratory Module system segment to make the Laboratory Vehicle 

system segment. This integration is scheduled for accomplishment at the 

Douglas facility in Huntington Beach. EMC tests shall be made by the OV Integrator and supported by the applicable associate contractors on the Laboratory 

Vehicle during Production System Integration Area tests. A flight configuration 

of the Laboratory Module joined to a complete mission module shall be used for the 

conducting of limited EMC qualification tests during simulated prelaunch, launch, 

and on-orbit operations . The limitation is the result of the simulation of the conducted EM interfaces and the deficiencies of the radiated EM environment. Compatibility shall be determined from measurements of EMISM of critical test points. 

Satisfactory demonstration of EMISM's and freedom from out-of-specification 

power bus transients are the criteria for test success. 

T 5.2. 1.2 Gemini B/Laboratory Vehicle Interface Tests 

The Gemini B, Laboratory Vehicle and Integrated T-IIIM will be mechanically 

mated at the launch pad. Following Gemini B checkout, the Gemini B and 

Laboratory Vehicle system s egments will then be electrically mated to form 

the Orbiting Vehicle. After the functional mating of the two system segments, 

interface tests shall be run to ensure (1) the proper flow of information and 

power across the interface, and (2) electromagnetic compatibility of interfacing 

systems with one another. Any special EMC tests required by the Gemini B/ 

Laboratory Vehicle interface specification shall be accomplished at this time by 

the OV Integrator supported by the applicable associate contractors. Satisfactory 

demonstration of compliance vifh the electromagnetic compatibility requirements 

will be considered to have been met if the operation of any system segment does 

not degrade the measured performance of any subsystem in any other system 

segment below the specified limits. The OV EMC Integrator shall apprise the 

MOL SPO of any deficiencies or potential problem areas learned through data 

acquired during this test phase. 

5. 2. 1. 3 Orbiting Vehicle Tests 

After integration of the Gemini B' and Laboratory Vehicle into an Orbiting Vehicle, 

a simulated mission, including prelaunch, launch, injection and on-orbit operations 

will be run, during which time the electromagnetic compatibility of the electrical 

and electronic subsystems on the Orbiting Vehicle shall be checkout concurrently 

with required operational AGE and ground facilities. Satisfactory demonstration 

of compliance with the electromagnetic compatibility requirements will be considered to have been met if the operation of any system segment does not degrade 

the measured performance of any subsystem in any other system segment below 

the specified limits. 

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Verification of EMISMs will be made by the DU EMC Integrator supported by 

the applicable Associate Contractors on the Orbiting Vehicle during the 

qualification testing of the MOL System noted in 5.2.2. OGE shall. measure 

system performance. The OV EMC Integrator .shall analyze test results, 

evolve solutions to problem areas in coordination with the associate contractors, 

and recommend action to the MOL SPO. 

T 5. 2. 1.4 Orbiting Vehicle/TIIIM Interface Tests 

The fully tested Orbiting Vehicle will be functionally mated to an integrated 

TIIIM Launch Vehicle. Interface tests shall be run to ensure the proper 

flow of information across this interface and that the interfacing systems 

are electromagnetically compatible with one another. Any special EMC tests 

required by the OV/TIIIM interface specification shall be accomplished at 

this time by the FV EMC Integrator supported by the applicable Associate 

Contractors. Satisfactory demonstration of compliance with the electromagnetic 

compatibility requirement will be considered to have been met if the operation 

of any system segment does not degrade the measured performance of any 

subsystem in any other system segment below the specified limits. The EMC 

Integrator shall apprise the MOL SPO of any deficiencies or potential problem 

areas discovered from data acquired during this test phase. Solutions to 

problem areas shall be evolved with affected contractors and action recommended 

to the MOL SPO. 

T 5. 2. 1. 5 Flight Vehicle Tests 

After integration of the OV and the TIIIM to form the Flight Vehicle simulated 

prelaunch, launch, ascent and on-orbit tests will be run, during which time 

the electromagnetic compatibility of the electronic subsystems of the Flight 

Vehicle shall be checked along with required AGE, ground facilities and 

portions of the SCF by the FV EMC Integrator, supported by applicable 

Associate Contractors. Satisfactory demonstration of compliance with the 

electromagnetic compatibility 'requirements will be considered to have been 

met if the operation of any system segment does not degrade the measured 

performance of any subsystem in any other system segment within the MOL 

Composite System, below acceptable limits, including EMC specification 

deviations granted to each contractor. Verification of EMISMs shall be 

made only on the flight vehicle during the qualification testing of the MOL 

System as noted in 5.2.2. OGE shall be used to rre asure system performance. 

The FY EMC Integrator shall analyze test results, evolve solutions to problem 

areas in coordination with affected contractors, and recommend corrective 

action to the MOL SPO. 

T 5. 2. 2 EMC Qualification 

EMC qualification tests shall be performed on the following vehicles: 

a. Gemini B Qualification Flight 

b. First complete Manned Orbiting Vehicle Flight 

c. First complete Unmanned Mission Orbiting Vehicle Flight 

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Qualification testing shall be accomplished by measurement of the accepted 

critical test points of each system segment to ascertain that the EMISM at 

these points has not been degraded below the acceptable level during the 

integration of the system segments into a composite system in the launch 

environment. 

T 5.2.3 ACCEPTANCE TEST 

Each system segment shall conduct an EMC test as a part of the segment 

level acceptance testing and prior to any integrated testing for each flight 

article. Electromagnetic interference safety margins (EMISM) on critical 

test points shall be measured. 

T 5.3 EED VALIDATION 

For EMC, the validation of all EED and firing circuits shall be inaccordance 

with the applicable requirements of SAFSL Exhibit 30005, SAFSL Exhibit 

30060, and AFWTRM,127-1. 

T 5.4 TEST REPORTS 

Each associate contractor shall submit a test report for their system segment 

in accordance with the CDRL. The EMC Integratorsshall submit the EMC test 

report for the composite system in accordance with the CDRL. 

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Section 6 

EMC ANALYSIS 

One of the major EMC roles of the EMC Integrator is to anticipate EMI 

problems before they happen. If in the early design stages of the MOL 

development, potential sources of EMI are identified, recommendations can 

be made to avoid their occurrence; a better system will be achieved. 

EMC analysis is a powerful tool for obtaining advanced information on the 

Composite MOL System and the EMC Integrator shall use this analysis to its 

full advantage. An EMC analysis using the preliminary MOL parameters 

shall be started immediately after the Phase II go ahead. The purpose of 

performing the analysis at this early stage is to: 

a. Develop the techniques for making the EMC analyses. 

b. Identify potential sources of EMI as soon as possible. 

As the MOL vehicle development progresses, more precise system parameters 

will become available. Also, there will probably be some system changes from 

time to time. These new data shall be used to update the analysis and to 

determine their impact on the Composite MOL System. Whenever potential 

sources of electromagnetic imcompatibility are uncovered from the analyses, 

the MOL SPO shall be informed of this situation and corrective recommendations 

shall be made by the EMC Integrator, 

The following is an outline of procedures that shall be used by the EMC Integrator 

in performing the analysis: 

1. a. Requests for RF transmitting and receiving frequencies. 

b. Transmitting chain frequencies (oscillator, multiplier frequencies, 

etc.). 

c. Receiver local oscillator frequencies. 

d. Primary frequencies generated in the segment other than RF 

frequencies (power frequencies, chopper frequencies, etc.) 

e. CEI specifications or equivalent. 

f. Facility IFS's 

g. EMC control plans 

h. AVE grounding diagrams 

i Critical test point lists and rationale data 

j. Description of critical test point measuring equipment 
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k. EED types and susceptibility 

1. Results of segment tests where electrical interface substitutes are used 

m. Analysis on interface circuits 

n. Spectrum signatures 

o EMC test plans and EMC test reports 

2. A complete tabulation of all the frequencies of all the equipment shall be 

maintained up to date for the life of the contract. In conjunction with this 

tabulation, information shall be'kept on harmonics and intermodulation 

frequencies. This list shall be referred to when coordinating frequency 

assignment requests. 

The following applies to the FV EMC Integrator in performing his analysis: 

1. A survey (calculated) shall be made of the EMC environment of the launch 

site. This survey will be kept up to date. The EMC Control Board shall 

be kept informed on the EMC environment of the launch site and its effect 

on the MOL vehicle. 

2. From the data received from the associate contractors, the EMC environment 

of the MOL vehicle shall be computed. This computation shall be updated 

whenever changes in the system parameters are reported. The EMC Control 

Board shall be kept informed on the status of the EMC environment of the 

MOL vehicle. The EMC Integrator shall also inform the EMC Control Board 

of optential EMI problems that have been determined from the analyses and 

make recommendations for.their correction. 

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APPENDIX ACHARTER FOR THE MOL ELECTROMAGNETIC 

COMPATIBILITY CONTROL BOARD 

I. Introduction - The purpose of this document is to define objectives and 

responsibilities of the MOL Electromagnetic Compatibility (EMC) Control 

Board and its membership. 

Z. Function - The EMC Control Board will meet regularly to direct the 

development of the MOL system for electromagnetic compatibility. 

3. Authority - The Board will exercise authority through the MOL SPO. The 

MOL SPO vests with its GSE/TD Contractor, Aerospace, specific 

authority necessary to pursue an EMC program which will accomplish, 

through timely events, the objectives delineated in the document, 

SSD Exhibit 64-4, Electromagnetic Compatibility Requirements for , 

Manned Spacecraft. 

4. Responsibilitv The EMC Control Board is responsible for directing the 

iiapleirirn of programs to insure.EMC interface considerations are 

incorporated ii`the MOL system design, sufficient and timely tests are 

programmed to verify interface EMC, and contractual documents are 

prepared to establish the EMC interface requirements. The Board 

will report to the MOL )PO/Aerospa: e all findings concerning interface 

data resulting from evaluation of system designs, proposed tests, and 

test data. The Board will advise the MOL•SPO/Aerospace what action 

is necessary to resolve EM incompatibilities throegh design alteration 

and further testing. In the event action items from the Board cannot be 

readily accomplished within itself, the Board will inform the MOL SPO/ 

•Aerospa--tce and recommend implementation action.: 

Representation - The MOL SPO will direct the Board. Membership will 

include the MOL SPO, AFSC-r-, 6595th ATW, Aerospace, T-III S.P0, 

Douglas Airceaft Company, The- Martin Company, GE and McDonnell. 

Additional representation may h requested for particular requirements. 

When problems arise pertaining to only cne or two segments of the MOL 

system, special arrangements may be. made by the Chairman to call 

sub-group'meetings. 

6. General.- Meetings will be held as agreed to by the MOL SPO and 

Aerospace. Sufficient latitude be given the Board to investiage 

problem aspe.cts of the 1■..10L. system to assure that the .MOL segments 

are fully compatible and the specified EMC objectives are achieved. 

• 

/s/ B. P.. Leonard 

B. P. Leonard• 

ViCe-President, General Maria..ger 

VOL Systems Engineering Office 

/s/ R. A.Bert= 

Russell A. Berg 

Brigadier General, -USAF 

Deputy Director, MOL 

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APPENDIX B 

Titan IIIM System Segment Deviations 

1. Whever SAFSL 30005 is referenced, replace by the applicable 

• EMC control plan for the Titan III system segments. 

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'APPENDIX C 

General Electric Company Deviations 

1. The following paragraphs are not applicable to the General Electric 

Company because the General Electric Company segment does not 

contain equipment pertaining to these paragraphs. In the event changes 

are made to the General Electric Company segment to include equipment 

which pertains to these paragraphs, they then shall apply. 

4. 2. Radiated Signal Control 

4. 2. 2. 1 Frequency Management 

4. 2. 2. 2 Spectrum Signature 

2. Paragraphs 5. 2, J. 1, 5. 2. 1. 2, 5. 2. 1. 3, 5. 2. 2: 

For VAFB testing, the number of critical points for General Electric Co. 

shall be equal to or greater than six (6) but shall not exceed twelve (12). 

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APPENDIX D 

Eastman Kodak Company Deviations 

1. The following paragraphs are not applicable to Eastman Kodak Company 

because the Eastman Kodak Company segment does not contain equipment 

pertaining to these paragraphs. In the event changes are made to the 

Eastman Kodak Company segment to include equipment which pertain to 

these paragraphs, they then shall apply. 

4. 2. 2 Radiated Signal Control 

4. 2. 2. 1 Frequency Management 

4. 2. 2. 2 Spectrum Signature 

4. 2. 3 ..Electro-Explosive Devices and Firing Circuits 

5. 3 EED Validation 

2. Paragraph 5. 1. 2: 

Breakout cables may be useful for EMISM testing on the Eastman Kodak 

Company segment. 

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