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WHS-383 

30 June 1967 

Page 1 of 84 

Copy Jr.... of 

To: W. H. Brassfield 

B. F. Knolle 

M. S. Malkin 

H. W. Nordyke 

S. M. Robinson 

J. Sewall 

S. S. Strong 

Subject: EMC Control Board Meeting, 15 - 16 June 1967 

1) The final EMC Board minutes of 15 - 16 June 1967, are attached 

to this letter. 

2) A preliminary agenda for the next meeting is included in the 

minutes. 

3) Contractors shall direct their responses to action items to their 

respective SPO's with information copies to the MOL EMC Board, 

W. W. Shely and W. J. Baldau: 

B. F. Knolle 

1./1‘, 7 

S.S. Strong 
tiir:\ rmi:71 rnii 

_ L' L 

WHS -383 

30 June 1967 

Page 2 of 84 

PPROVED FOR 

RE E 1 JULY 2015 tobP, 

MINUTES OF THE MOL EMC CONTROL BOARD MEETING HELD ON 

15 - 16 June 1967 

The following summarizes the EMC Board action on the specified items: 

(1) Report by EK on the Method of Implementing the Wire Categorization. 

A) Since EMC and cabling are handled by the same group, EK does 

not find it necessary to go through any formal documentation to 

implement the wire categorization. However, the EMC engineering does not sign-off on the EK cabling drawing. The EMC 

Control Board recommended that EK institute a procedure where 

all electrical drawings are signed off for EMC. 

B) All major design involving EMC is done in house. EK EMC 

engineering interprets the wire categories for their subcontractors 

and will keep the EMC Control Board appraised of any pending 

problems. 

The following ruling was made by the EMC Control Board in 

response to an EK request on the meaning of the separation requirement for wire bundles: 

Wtre. 1,5o. Actle 

C6xele CtOY-. 

The 64-4 requirement is that A = 4"; the Board recommends a 

goal of B = 4". 

(2) • Report on EED's. 

A) EK informed the Board that they have no EED applications at 

this time. 

B) DAC informed the Board that they have received the technical 

information on the MC Thermal Power Meter (TPM) but have 

not received information on the MAC Low Energy Squib Simulator/ 

High Energy Squib Simulator (LESS/HESS). DAC is not sure 

whether or not they have received the technical data on the UTC 

device. 

."‘ 

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WHS-383 

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C) GE reported to the Board that they have received technical data 

on both the TPM and the UTC device. However, they have not 

received the data on the LESS/HESS. 

The Board will obtain the technical data on the LESS/HESS, 

TPM, and the UTC device and forward this information to EK 

to keep them appraised so they can respond in timely fashion in 

the event EED applications are levied on them at some future 

date. 

(3) The Loading of Unused Interface Wiring. 

A) EK has different cable designs for the two different configurations. 

Therefore, there are no EK circuits with signals that are not 

terminated for all flights. EK does have spare wires that are not 

terminated in any fashion (such as loading or grounding). This 

procedure has been used in the past without causing any problems. 

B) DAC informed the Board that their present design does not allow 

for any spares (the primary reason for this policy is to save 

weight). The EMC Control Board notified the SPO/Aerospace 

representative of the Cable Working Group of this situation. 

C) The GE design does allow for spare wires and these spares are 

left open-circuited. 

D) DAC informed the Board that they are presently waiting for the 

official request from MAC on the loading of the unused circuits 

on the GBQ flight. In the meantime DAC has informed all the 

affected groups within their house to anticipate the MAC request 

so they can respond in a timely manner. 

(4) Keeping EK Appraised of Status of White EMC Control Board Meetings. 

A) The Board will have information copies of all TWX's and minutes 

pertaining to white EMC Control Board meeting sent to EK. Two 

copies of the last EMC Control Board meeting (May 17-18) were 

given to EK for information. 

B) EK requested the right to have any agenda item from the white 

meeting placed on the agenda of the subsequent black meeting. 

The Board granted this request. In the event EK has any comments 

to be made at the white meeting, they will have them made through 

GE. The Board will investigate the possibility of holding all 

black EMC Board meetings in order to allow EK to participate 

directly at all meetings. 
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WHS-383 

Page 4 of 84 

SPECIAL EaraliK1 

C) The present policy is to have an EMC Control Board meeting 

approximately every eight weeks. The Board will look into 

scheduling consecutive white-black meeting to cut down the 

frequency of the meeting and the required traveling. For the 

time being it is intended that these meetings will be held in 

Los Angeles unless there are compelling reasons to do otherwise. However, it is expected that in the very near future a 

meeting will be scheduled for VAFB. 

(5) Submittal of Data to the Board. 

A) For all future meetings the contractors shall submit copies of 

briefings that are presented at the meeting. These charts will 

then be made into an attachment to the minutes. If a contractor 

wants to submit an analysis or technical position to the other 

contractors, he may submit this to the Board at the meeting and 

they will be made attachments to the minutes. 

(6) Implementation of EMC Control Plans, 

A) EK presented their EMC program status on four briefing charts. 

Copies of these charts were made by the Board and are in 

Attachment A of these minutes. 

B) GE submitted an outline of the EMC organization and status of 

their EMC Control program, SAFSL 24005. (Attachment B) 

GE informed the Board that they do extensive EMC testing on 

their breadboards. They have approximately 15 subcontractors 

who have or will be submitting EMC control plans to them. 

GE does EMI analysis and this is submitted with the PDR package. 

In response to a Board request GE submitted a copy of the EMC 

analysis for the CC & I. This analysis becomes Attachment. C to 

the minutes (Attachment C will not be distributed with these 

minutes; however, it will be in the permanent files of the EMC 

Control Board). 

Kollsman has identified but not confirmed an EMI problem with 

their star tracker at this time. Kollsman has been appraised of 

the 64-4 requirements and has obtained the services of an EMC 

consultant. The Board identified the star tracker as a potential 

problem area and GE agreed to make the Kollsman EMC control 

plan available to the Board. GE will appraise the Board of the 

expected date of submittal. 

HA LEI 
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C) DAC gave the following status on their major subcontractor 

EMC Control Plans: 

Pratt & Whitney accepted 

Hamilton Standard accepted 

IBM accepted 

Honeywell accepted 

AiResearch not accepted yet but approximately 

90% completed 

Collins not submitted yet 

The Board identified the ACTS/SCE as a critical item and 

requested DAC to submit a copy of the Honeywell EMC Control 

Plan by 7 July. DAC shall report to the Board at the next 

meeting the date they expect Collins to submit their EMC 

Control Plan. 

The following is the DAC implementation of the Laboratory Vehicle 

EMC Control Plan: 

The EMC Group works with the design engineers. 

The EMC Group signs off on,all CEI's, IFS's, and TRS's. 

The EMC Group does not sign off on engineering production 

drawings. 

DAC has an EMC Working Group. 

The Board strongly recommended to DAC that they establish a 

procedure for signing off all electrical drawings for EMC, as 

we are in the early stage of the design where they can be most 

effective in achieving a compatible system. 

DAC informed the Board that they have been unable to implement 

the Composite EMC Control (except for the preliminary frequency 

management analysis) because they have not received the required 

documentation from the other associate contractors. The Board 

directed DAC to submit a list of all documents they need and the 

date they are needed to implement the Composite Control Plan by 

the next Board meeting. 

DAC informed the Board that they would like to revise the Composite 

EMC Control Plan and requested the Board to make recommendations 

for changing the Plan. The Board agreed to review the Composite 

Control Plan for changes and will continue this discussion with DAC 

at a separate meeting. At this meeting the progress in implementing 

both Control Plans will be explored in greater detail. 

rlmfir3. 

SPECAL EAL6Ltiliddi SECRET 
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(7) 

D) All contractors will present at the next Board Meeting the status 

of the Subcontractor Control Plans. 

All contractors will report at the next Board Meeting the methods 

being used which insure that EMC requirements are being 

implemented in equipment and system design. The EMC Board 

stated that a Company procedure whereby EMC managers sign off 

on the engineering drawings would be considered as an acceptable 

control method. 

Anticipated Deviation Request by the Associate Contractors. 

A) EK gave a presentation of their measurement and analysis of the 

short duration generated (conducted and radiated) interference 

caused by 5v <5 ma) and 2v power switching. These levels are 

not within the limits of the steady state specification. However, 

the Board considers this "short duration noise" and a waiver is 

required only if this noise results in interference. EK will submit 

this data and the trade off penalties (the weight, power, etc. for 

adding filtering) to their SPO. In their letter they will officially 

inform the SPO whether these levels cause interference within their 

system. EK shall request their SPO to determine whether these levels 

cause interference with the other segments. EK shall also inform 

their SPO the latest date they require a reply. 

GE informed the Board of the following potential problems: 

1. GE still anticipates using the PC-30 (Hi Shear) EED. The 

susceptibility mode of this EED pointed out in the 17 May 

meeting will not be a factor because only one bridge will be 

used. However, this EED has not been tested in 400-550 MHz 

and 1200-1400 MHz ranges and may require a deviation. 

2. GE knows that short duration noise (conducted and generated) 

will be generated when the EED's are fired. The Board informed 

GE to submit the data with an analysis. concerning the effect of 

this EMI on their segment. GE shall request their SPO to have 

DAC, in their role of EMC integrator, make an analysis as to 

the effect of this EMI on the rest of the MOL. 

3. GE informed the Board that they also generate short duration 

noise when they switch primary power. The Board informed 

GE to follow the same procedure as described for the EEDs. 

4. The Board also requested DAC to provide the status of their 

analysis for determining the non-interference of the noise 

generated by the power switching transients. 
NRO APPROVED FOR 

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Page 7 of 84 

C) DAC informed the Board of the following potential request: 

1. They are now preparing a deviation request against the 

susceptibility levels for conducted interference in the audio 

frequency range for all Laboratory Vehicle equipment. 

DAC submitted the preliminary values for this request at 

the 17 May meeting. DAC submitted preliminary technical 

justification for these levels (see Attachment D of these 

minutes) and the minutes on the 19 June TEM on EMC Aspects 

of Power Quality (Attachment E). DAC could not indicate to 

the Board at this time when they will have more definitive 

information concerning this impending request. 

2. DAC may need relief from the conducted generation limits 

for the voltage regulator used with the TWT. 

3. DAC anticipates that they will need a deviation on the radiated 

interference levels for TTCV. 

The Board directed all contractors to Identify any further deviation 

requests (including AGE) they anticipate at the next EMC Control 

Board Meeting. The Board stated that the policy is NOT to grant blanket 

deviations. Exceptions will be made where it can be established 

by analysis and/or test that the requirements are not needed to insure 

compatibility. Blanket deviations will not be granted. 

(8) Use of Specialists. 

The Board stated the policy that for any future meetings the associate 

contractors may bring specialists for discussion on particular agenda 

items. (Example: A member of test group for items involving testing.) 

(9) Report on Status of EMC Testing. 

A) EK gave a presentation of their status. The EMC Board made 

copies of the EK briefing charts and they are included iri these 

minutes as Attachment F. EK intends to determine the susceptibility threshold limits for all components. 

B) The GE presentation on testing is given in Attachment G. 

C) DAC had no written material to be included in the minutes at the 

time of the meeting. The Board requested DAC supply in writing 

the status of their EMC testing program by 23 June. Their writeup will be made into an attachment of these minutes. (Attachment 

H.) 

SPE CE gS 
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Page 8 of 84 

D) The EMC Board requests all contractors to present at the next 

black EMC Board meeting: 

1. Their Company's plan for providing support to the integrated 

EMC program to include: 

(a) Philosophy of test support for EMC tests (factory to pad) 

on all out of plant EMG tests. 

(b) Test Equipment support for these tests. 

(c) EMC support personnel for these tests. 

(d) Design provisions for accomplishing EMC test. 

(e) A schedule to accomplish (a) - (d) above. 

(10) EMC Integration 

The EMC Control Board requested DAC to prepare a presentation of 

their role as EMC Integrator. This presentation, complete with handouts, 

will cover the DAC definition of their role of the EMC Integrator, the 

status of their actions to date, and the schedule of actions to be accomplished. This presentation is to be given at the next white and next black 

EMC Board Meetings. 

(11) DAC Interface 

DAC presented the status of their interface requirements. Basic EMC 

requirements on Vehicle interfaces have been negotiated between GE and. 

DAC. These basic requirements appear in all interface specifications in 

accordance with the complexity or nature of the particular interface. Any 

deviations are noted (or negotiated) within the particular IFS. 

DAC has not negotiated inclusion of EMC susceptibility tables into the 

IFSs. DAC presently questions the need of these tables in the IFS and 

if the tables become necessary, they possibly should be placed in 

Section 6 (noncontractual) of the IFS. 

DAC has begun analysis of Induced EMI on GB-Till cabling in view of action 

items levied at last EMC Control Board Meeting and of IFS 201001 sign-off 

meeting. Due dates for action items were noted. 

The next white EMC Control Board Meeting has been tentatively set for July 11 

and 12. After this meeting it is planned to run consecutive white/black meetings 

which, it is felt, will be more effective and reduce the amount of traveling. 

r. T , 

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WHS-383 

SPECIA triiblAqstUd\` 71‘;.... 2iPage. 

9 of 84 • 

The following items will be added to the agenda of the white EMC Control Board 

Meeting scheduled for 11 and 12 July 1967. 

DAC shall inform the Board when the Collins EMC Control Plan will be 

submitted. (6C) 

All contractors shall give the status of the subcontractor EMC Control 

Plans. (6D) 

All contractors to identify any anticipated deviation requests (including 

AGE) not already identified. (7D) 

(4) All contractors to present their Company Plan for supporting the 

integrated EMC program. (9D) 

(5) DAC to give a presentation of their EMC integration role. (10) 

(6) DAC shall submit a list of all information items they need and the date 

needed to implement the composite Control Plan. DAC shall also give a 

brief presentation on what they intend to do with this data. (6C) 

The following are preliminary agenda items for the next black EMC Control 

Board Meeting: 

(1) 

(2) 

(3) 

(1) All contractors shall report the methods being used to insure the implementation of the EMC requirements (e. g. , the sign off of drawings). (6D) 

GE shall submit data with analysis concerning the effect of the EMI 

generated when they fire their EEDs. (7B2) 

GE shall submit data with analys'is concerning the effect of the noise 

generated when they switch power. (7B3) 

(4) DAC shall submit data with analysis for determining the non-interference 

of the noise generated by switching power transients. (7B4) 

EK shall report status of submitting short duration analysis to their 

SPO. (7A) 

(6) GE shall inform the Board when the Kollsman EMC Control Plan will be 

submitted. (6B) 

ACTION ITEMS 

(1) DAC shall submit a copy of the Honeywell EMC Control Plan by 7 July 1967. 

s-.24 (6C) 

SPECIIA arm 

(2) 

(3) 

(5) 
NRO APPROVED FOR 

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Page 10 of 84 

LIST OF ATTENDEES 

E. Jacobs 

R. Schult 

Grady Fox 

Dwight Johnson 

J. E. Seright 

Alan S. Lupfer 

Eugene Manfreda 

R. H. Dickinson 

J. B. Johnston 

C. R. White 

H. B. Thomas 

R. E. Freeman 

R. C. Twomey 

W. W. Shely 

W. J. Baldau 

Frank Lewotsky 

SPECUL RHOLITEI 
NRO A OVED FOR 

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0,..*AAAL0 

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Page 11 of 84 

MOI; SPO ) 

/7 

Aerospace Corporation 

7/7 ( 

Eastman Kodak Company/ 

A 

General Electric Company 

Douglas Aircraft Company 

SECRET SEEM E Virltra 

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• Page 12 of 84 

ATTACHMENT A 

EMC PROGRAM STATUS 

• Parts 

Sprague developing filters which attenuate d. c. motor generated interference 

to 64-4 levels. 

▪ Component Control Plans 

1. Recorder. 

2. Processor. 

▪ Bonding Diagrams 

1. TM bonding layout (This is a suggested layout which EK interface 

has discussed with GE who has design responsibility.) 

2. External structure/heater tube assembly. 

• Power Returns 

Diagram in preparation. 

• Test Equipment 

1. New NF-105 receiver in-house. 

2. EMC-10 receiver in-house. 

3. New Solar transient generator in-house. 

4. Audio and r. f. generators for susceptibility in process of being 

specified. 

5. . Transient detectors, chart recorders, oscilloscopes and recording 

cameras for EMISM testing in process of being specified. 

• Generated Interference 

Extensive breadboard testing as reported by < 5v at <5ma charts shown 

in this report. 

• Susceptibility 

Breadboarded transient suppression circuitry. 

▪ Breadboard Component Tests 

1. Temperature sensor amplifier (LP.) 

2. Prototype heater controller. 

3. Record handling equipment breadboard. 

• EMI Training Session 

▪ Transients 

Realistic definition - change of requirements. 

ImplementatiOn 

Audio Ripple 

Realistic definition - change of requirements. 

Power Distribution Diagram 

spEcllari. 
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ve....ON=V771 

4;A 

ATTACHMENT 

SPEI1[a nordINI 

STATUS 

WHS-383 

Page 13 of 84 

GENERAL ELECTRIC EMC CONTROL PLAN 

(SAFSL EXHIBIT 24005) 

I. GE's EMC control plan is not on contract. Comments on the plan were submitted to AF on 19 May 1967. No reply has been received to date. Meanwhile GE is proceeding to implement the plan. 

II. Status of Implementation 

1. EMC Group Organized, Meetings Held. 

Members: 

R. H. Dickinson Program Management, Chairman 

J. B. Johnston Systems Engineering 

C. R. White Design Engineering 

L. M. Reveron Quality Assurance and Reliability 

V. A. Smith - System Test and Development 

E. T. Hirsch - Manufacturing 

Ex Officio Attendees: 

J. R. O'Connell - Major Subcontracts 

C. M. Garcia - Development Testing (Des. Engineering) 

W. Orr - AGE Engineering (Des. Engineering) 

R. A. Spinelli VAilB Testing (ST&D) 

C. R. Keller Associate Contractor Testing (ST&D). 

2. Subcontractor Surveillance 

7 Subcontractor EMC Control Plans Reviewed 

3 Approved 

4 Plan Review Meetings Held With S/C 

Monitored SDS Computer EMI Tests 

3. Generated EMI Analysis on CC&I Subsystem 

4. Released Design Note on Shielding 

5. Prepared Checklist for use in EMC Design Reviews 

6. Released Instructions for Wire Categorization 

7. Performed Detailed Comparison of DP-1690 and SSD Exhibit 64-4. 

Updating of DP-1690 in Process. 

8. In-House Design Reviews: 

1 Completed 

4 Scheduled in June 

9. Preparing Revision to Ground Test Plan 

••;:k - 

,44 

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SPIRE 
WHS-383 SPEC L Lai llEg Page 14 of 84 

(ATTACHMENT D(a) 

• MEMORANDUM 

NIRO A VED FOR 

RELEA ULY 2015 

Date: PPR 1 4 t5e7 

A3-810-EBCO-M-056 

TO: M. H. Peairs, A3-810 

FROM: R. C. Weaver, A3-810 

SUBJECT: PROPOSED REVISION TO STD 0003, STANDARD SPECIFICATION, 

POWER QUALITY, ELECTRICAL,MOL SYSTEM ORBITING VEHICLE 

COPIES TO: E. G. Corcoran, I. B. Friedman, C. W. Gann, W. S. Hayes, 

J. R. Hill, R. H. Lenke, R. H. McDougle, W. C. Peart; 

M. W. Ralsten, C. R. Rubenstein, R. C. Twomey, A3-810; 

C. F. Marvin, A3-816; File 

REFERENCE: Memorandum A3-810-EBCO-M-055 

This memorandum transmits the proposed revision to Standard 

Specification STD 0003 as reviewed and coordinated with 

SPO/Aerospace on 12 and 13 April 1967. The proposed Standard 

delineates the characteristics of primary electric power to 

be supplied to the MOL Laboratory (LM) utilization equipment when 

operating with (a) one or more of the L4 fuel cell powerplants, 

(b) the dc ground power supply or backup battery, or (c) any 

combination of these sources. 

It is intended that the characteristics defined in the 

proposed Standard will be used as a guideline in redefining 

the characteristics of primary power for utilization equipments 

which are a part of the Mission Payload Segment and Gemini B. 

It should be pointed out that the ripple and transient voltage 

limits given in the proposed Standard are contingent 'on 

Associate Contractor acceptance of, the requirements imposed by 

paragraph 4.2, "Utilization Equipment Turn-On." 

The limit curves presepted in the proposed Standard reflect 

conditions seen when operating on ground power. To support 

redefinition of power quality characteristics in the Associate 

Contractor Interface Specifications, it was necessary to 

develop ripple and transient limits for the case of operation 

on fuel cell power only. These limits are shown on the 

attachments to this memorandum. 

. Pak. 1.1aTs. -71 Mg 
NRO A VED FOR 

RELEA 1 JULY 2015 SPECIAL 11 HEr Fikr1 

WHS -383 

Page 15 of 84 

TO: M. H. Peairs, A3-810 A3-810-EBCO-M-056 

Page 2 

A summary of the data used to generate the revised limits 

for ripple and transient voltages is given in the reference 

memorandum. It is particularily appropriate to note here 

that the maximum duration of transient undervoltage (Abnormal 

Operation, Limit 4 on Figure 3 in the proposed Standard) is 

based on the time-current characteristics of a 15 ampere 

magnetic circuit breaker. If any load circuit requires the -- 

use of a protective device with time-current characteristics 

beyond the range of a 15 ampere magnetic circuit breaker, 

it will be necessary to extend the envelope for Limit 4. 

e 

R. C. Weaver, Section Chief 

Power Distribution 

RCW:pmc 

Attachments: 1 - Envelopes of Single Event 

Transient Voltage Indicating . 

Recovery to Steady-State Limits, 

System On One Fuel Cell Powerplant 

2 - Electric System Ripple Limits, 

System On One Fuel Cell Powerplant 

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STANDARD SPECIFICATION 

POWER QUALITY, ELECTRICAL, MOL LABORATORY 

Page 1 ofe 

WHS-383 

Page 18 of 84 

MODULE 

1. GENERAL 

1.1 Scope. This standard delineates the characteristics of the.primary 

electric power to be supplied to the MOL Laboratory Module (LM) 

utilization equipment when operating as a total system and is predicated on all equipments meeting their individual specification 

requirements. 

1.2 Purpose. The purpose of this standard is to assure compatibility 

between the LM primary power system and the LM utilization equipment 

to the extent of confining the 124 primary power and utilization 

equipment characteristics within the limits specified herein. The 

utilization equipment specification shall specify this standard for 

power requirements. 

The characteristics of primary power defined herein shall be used 

as a guideline in redefining the characteristics of primary power 

for utilization equipments which are a part of the Mission Payload 

Segment and Gemini B. 

1.3 Deviations. Requests for deviations to the requirements specified 

herein are subject to approval by the Douglas Aircraft Company, 

MOL Vehicle Electronics, Electrical Power Branch. 

2. APPLICABLE DOCUMENTS 

None 

3. DEFINITIONS 

3.1 Electric System. The electric system is all equipment necessary for 

the production, distribution, control, and utilization of primary 

electric power. 

3.2 Normal Electric-System Operation. Normal operation of the electric 

system encompasses all functional operations reqUired of the electric 

system in order to meet mission requirements without performance 

degradation. These functional operations may occur at any time and 

any number of times during LM assembly and checkout, launch preparation, 

ascent, and orbiting. 'Examples of such normal operations are the 

switching of utilization loads and paralleling and transfer of 

primary power sources. 

erpnrsT PEE ElnE113 11%2 oLunir. 
NRO OVE 

"RELE E 1 JU 

• 

Page 2 of 

WHS-383 

Page 19 of 84 

3.3 Abnormal Electric-System... Operation. Abnormal operation of the 

electric system is the malfunction of some part of the electric 

system which could cause the quality of primary power to exceed 

normal electric-system operating limits. The malfunction is 

uncontrolled, however recovery from abnormal to normal operation 

is a controlled action. Abnormal operation may occur at any given 

instant during LM assembly and checkout, launch preparation, ascent, 

and orbiting. An example of an abnormal operation is an electric 

power fault and subsequent clearing by protective devices. 

3.4 Primary Power. Primary power is that power provided from (a) one 

or more of the I2 fuel cell powerplants, (b) the de ground power 

supply or backup battery, or (c) any combination of these sources. 

3.5 Utilization Fouipment. Utilization equipment is any equipment 

which operates from primary power. 

NOTE: Devices such as circuit breakers, fuses, relay 

contacts, cables, etc. which are necessary for 

the distribution and control of primary power 

shall not be considered as utilization equipment. 

Devices such as inverters, converters, filters, 

etc. which intentionally condition the power 

obtained from the primary power sources shall be 

considered as utilization equipment. 

3.6 Steady-State Voltage. The steady-state voltage is a dd voltage which 

is fixed in value for a given set of system operating conditions. 

The value of steady-state voltage will change as a function of load 

demand and primary power source capacity. 

3.7. Ripple. Ripple is a periodic variation of voltage about the steadystate voltage and may be of any repetitive waveform. 

3.8 Transients. A transient is a non-periodic variation of voltage of 

any waveform. The transient may be a single excursion of either 

positive or negative polarity, but will usually contain multiple 

excursions of a damped oscillatory nature. 

NOTE: Examples of steady-state, ripple, and transient voltages 

are shown in Figure 1. 

3.9 Power Interruption. A Dower interruption is (a) a transient 

undervoltage condition which exceeds the lower limit transient 

voltage envelope specified for normal electric system operation, 

or (b) a power outage which is the complete loss of primary power 

at the input terminals of the utilization equipment. 
NRO PROVE 

REL 1 JUL '77;:r3 V-4 

" 1 t'• 

LI 0, ;:i4 — L 

SPEC Rd 

Page 3 of 8 

VHS-383 

Page 20 of 84 

h. DETAIL REQUIREMENTS 

4.1 Utilization Equipment Classification. The utilization equipment shall 

be classified in accordance with its functional requirements during 

the modes of electric system operation specified herein. Class I 

equipment shall be supplied power from the auxiliary bus; Class II 

iA44-'°"^:" iiquiPie-n-tfrom the main bus; and Class III equipment from the inhibit 

bus. The applicable classification shall be specified in the 

equipment specification. 

4.2 Utilization Equipment Turn-On. The single event transient voltage 

limits specified herein are based in part on restricting the 

maximum charging current surge permitted during utilization 

equipment turn-on. No utilization equipment shall present a single 

event charging current surge in excess of the following criteria: 

That portion of the utilization equipment input impedance which 

can be represented by an equivalent shunt capacitor, shall not 

exceed 0.5 microfarad per watt of the steady-state power specified 

in the equipment specification. 

4.3 Utilization Equipment Input Power Qualtty_. When use of power is 

required having other characteristics or closer tolerances than 

specified herein, the conversion to such characteristics shall be 

accomplished as part of the utilization equipment. 

4.3.1 Normal Electric System Operation. The following requirements are 

applicable to all classes of utilization equipment unless otherwise 

noted. When supplied with primary power having the characteristics 

specified in this paragraph the utilization equipment: 

(a) Shall meet performance requirements specified in 

the equipment specification for normal electric 

system operation. 

(b) Shall remain safe. 

4.3.1.1 Steady-State Volta Vie. The steady-state voltage at the input 

terminals of the utilization eouipment shall remain within 

the limits of 22 to 31 volts do (ripple not included). 

4.3.1.2 Ripple. The frequency components of the ripple voltage at the 

input terminals of the utilization equipment shall not exceed 

the limits shown in Figure 2. 

SPEGAL EZning 
NR ROVE 

REL SE1JUL PaVHS11 of 9 - 383 

Page 21 of 84 

4.3.1.3 Transient Voltages. As a result of single event switching in 

other parts of the Electrical Power System, the transient 

voltages at the input terminal of any given utilization 

equipment shall not exceed the limits specified below: 

4.3.1.3.1 Transient Overvoltages. Single event transient overvoltages 

shall not exceed Limit 1 of Figure 3. 

4.3.1.3.2 Transient Undervoltages. Single event transient undervoltages 

shall not exceed Limit 2 of Figure 3. 

4.3.1.4 Power Outage. (Applicable to Class III utilization equipment 

only). During normal electric system operation, Class III 

equipments shall be capable of experiencing power outages (pp 3.9b). 

These outages will occur on a scheduled basis rather than 

at random. The duration of any single power outage shall not 

exceed 25. minutes. 

4,3.2 Abnormal Electric System Oneration. The following requirements are 

applicable to all classes of Utilization Equipment unless otherwise 

noted. When supplied with primary power having the characteristics 

specified in this paragraph, the utilization equipment: 

(a) Shall meet performance requirements specified in the 

equipment specification for abnormal electric system 

operation. 

(b) Shall remain safe. 

(c) Shall, on return of primary power to normal electric system 

operation: 

(1) Recover in accordance with requirements in the detail 

equipment specification, and 

(2) Provide specified performance with no degradation 

in reliability resulting from the abnormal electric 

system operation. 

4.3.2.1 Ete4Ayzalteduryoltacre. The steady-state overvoltage at the input 

terminals of the utilization equipment shall not exceed 33 volts dc 

(ripple not included). 

4.3.2.2 Steady-State Undervoltam. The steady-state undervoltage at the 

input terminals of the utilization equipments shall not be less than 

20 volts dc, (ripple not included). 

4.3.2.3 11111212... The frequency components of the ripple voltage at the input 

terminals of the utilization equipment shall not exceed the limits 

shown in Figure 2. 

-•• 

IMAL ItAiiDUNG 
Page 5 of.e 

W113-383 

Page 22 of 84 

t-VT7v41 

4-17;& C:-.A4.1s1N.14 

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Overvoltaros. Single event transient overvoltages at the 

inals of the utilization equipment shall not exceed Limit 3 

3. 

4.3.2.5 Power Interruption. 

4.3.2.5.1 Transient Undervoltarzes. Single event transient undervoltages at the 

input terminals of the utilization equipment shall not exceed Limit_4 

of Figure 3. 

4.3.2.5.2 Power 

C

Outage. In addition to power outages specified for 

lass III Utilization equipment during Normal Electric System 

Operation (Paragraph 4.3.1.4), all classes of utilization equipment 

may experience a contingency mode of power outage under the provisions 

of Abnormal Electric System Operation. This condition could occur 

as the result of a combination of component failures, or 

mismanagement of the primary power system. In the event of such 

a contingency, the period of power outage will vary for the 

different classes of utilization equipment as follows. 

4.3.2.5.3 Class I EguiaapI, For Class I utilization equipment the maximum 

duration of power outage shall be 50 milliseconds. 

4.3.2.5.4 Class ..111:11.21. For Class II utilization equipment the duration 

of power outage is indeterminate. 

4.3.2.5.5 Class III Equipment. For Class III utilization equipment, the duration 

of power outage is indeterminate. 

4.4 Electromagnetic Compatibility. Susceptibility to and generation of electromagnetic interference is coarolled by the specific equipment specification. 

The requirements of this Power Quality standard are contingent on all 

utilization equipments meeting their specification requirements. 

• SPECIAL KIITIJI 

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nr.: EV1 

WHS-383 

Page 23 of 84 

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Kea 
RRO APF'ROVED-FOR 

RELEASE RELEASE.1JULY 2015 

ATTACHMENT D (b) WHS=383 

Page 26 of 84 

PIM MII'LliltiMg 

MEMORANDUM 

Date: An 1 9 1967 

A3-810-EBCO-M-055 

TO: M. H. Peairs, A3-810 

FROM: I. B. Friedman, A3-810; Ext. 3004 

SUBJECT: SUPPORTING DATA FOR PROPOSED REVISION TO STD 0003 . 

COPIES TO: S. G. Blankenship, M. W. Ralsten, R. C. Weaver, A3-810; File 

IF 

The test report transmitted herewith, provides the backup 

data supporting the proposed revisions to the MOL Power 

Quality Standard STD 0003. This report. and the proposed 

revisions to the Standard, were submitted to SPO/Aerospace 

on 12 April 1967. 

- 

# 

• 

I. B. Friedman 

Power Distribution Section 

_242......................... SL ERM 
NRO APPROVED FOR 

D

REL 1 JULY 201 

WHS-383 

Page 27 of 84 ETLOP,12 

POWER SYSTEM TRANSIENT RESPONSES AND RIPPLE TESTS 

SCOPE: This report contains a summary of the data used to define the 

primary power quality for the MOL Laboratory Module. 

PURPOSE: The purpose of this report is to provide backup data to supple- 

: ment and support the proposed revisions to the, MOL Laboratory 

Module Power Quality Standard (dated 12 Apri1.1967-- 

Preliminary). 

TRANSIENT TESTS 

The electrical system was simulated using "lumped, bilateral, and passive 

elements. A fuel cell approximation was synthesized from an equivalent 

circuit provided by Pratt and Whitney Aircraft. Cables and wires were 

simulated by inductors in series with resistors. All protective devices, 

relay contacts and connectors were simulated by resistors. Utilization 

equipment was simulated by resistors and capacitors. Inductors were not 

included in the simulated utilization equipment as the transient response of 

the system improves with the addition of inductors. All impedances were 

scaled up by a factor of 105 in order to keep component values within 

practical limits. 

The entire electrical system was reduced to a power "source, a distribution 

network and three simulated loads operating in parallel. These loads 

served the following purpose: 

a. A single composite load representing a large percentage of the 

utilization equipments, equal to one k 
APPROVED FOR 

SE 1 JULY SPECI1A-_, HILL A WHS-383 

Page 28 of 84 

b. A single (composite) load representing utilization equipment which 

when switched "on" or "off" produces an electrical disturbance. 

c. A third single load representing a typical utilization equipment at 

whose terminals the influence of the above electrical disturbance 

was measured. 

For the transient producing loads three types were considered: 

a. A 300I watt motor simulated by a resistor in parallel with a 

comparatively large capacitor and small resistor in series. 

b. A typical load of 1000 watts simulated by a resistor in 

parallel with a comparatively small capacitor. 

c. A maximum fault load of 0. 1 ohm simulated by a resistor in series 

with a 15 amp magnetic circuit breaker. 

The transient tests consisted of turning "on" or "off" the various transient 

producing loads, and recording the disturbance. System parameters were 

varied with each type of load to determine those combinations producing the 

maximum transient voltages. In determining these effects, the following 

variations and their combinations were made: 

• a. Effect when operating from three fuel cell powerplants, located 

15 feet from the main bus, one fuel cell powerplant (in assumed 

high temperature mode) located 20 feet from the main bus, and 

from the ground power supply located near the J box or 100 feet 

from the main bus. 

_MM. MOMS 
SPEClia .11FAHIL 

WHS-383 

Page 29 of 84 PPROVED- FOR 

REIEJ E 1 JULY 201 

b. Effect of varying the load feeder distribution line length from 

very near to 30 feet from the main bus. 

c. Effect of step load changes of 1000 watts, and of 0. 1 ohm faults. 

d. Effect of varying the one kW, load filter capacitors from 10 to 500 

microfarads. 

e. Effect of adding suppression capacitance of 50 to 150 microfarads 

across the main bus, and up to 1000 microfarads at the umbilical 

connector. 

In each case the disturbance was recorded on film from an oscilloscope trace. 

Transient voltage envelopes were constructed from these pictures. 

RIPPLE TESTS 

The ripple tests were based on the narrowband conducted interference limits, 

shown in Figure 2 of SAFSL Exhibit 11005. As, an approximation on a system 

level with one fuel cell operating in the high temperature mode, the 

allowable current was doubled. The currents were introduced into the 

circuit from a signal generator simulating ripple producing loads. The 

voltage ripple produced, as a result of these currents, was measured at the 

load representing a typical utilization equipment. System parameters were 

again varied to determine worst case conditions. 

Ripple frequency response curves were constructed from the data. 

ADDITIONAL NOTES 

From its specification the ground power supply has a maximum dynamic 

transient response of 3 volts for a load• change of 250A. From the tests 

SPECUL NEEDLES 
, NR ROVED FOR 

RE A 1 JULY 2015 

SPE= IIEDAG WHS-383 

Page 30 of 84 

specified herein, a one kw load change corresponds to an approximate 

35A current change. The maximum power supply voltage change for a 1 kw 

load change consequently is 0. 4Z volts. The response time of the power 

supply is 100 milliseconds. 

TEST DATA 

The attached data and calculations provide a record of the results used to 

redefine the power quality limits. 

-SEE-MEAL NAKOLEG 
DATE MODEL 

SPECila mattimg 

SPEC tiA MIES 

WHS-383 

Page 31 of 84 

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ATTACHMENT E 

MINUTES 

TECHNICAL EXCHANGE MEETING. 

EMC ASPECTS PGA' n QUALITY 

. 9 June 1967 

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Page 53 of 84 

J. R Cuff mings, McDonnell 

R. J. Schepp , McDonnell 

R. Weaver, DAC 

R. C Twomey, DAC 

R. J. Obleman. DAC 

V. K. Weaver, DAC 

R. P Toutant DAC 

R. E. Freeman. DAC 

DAC handed out a package consisting of data on the ripple characteristics 

for the power system. The contents of the package were discus-sed. Bob 

Weaver, of DAC, briefed the meeting on the technology used on the analysis 

and 1F.boratory testing to evolve the ripple content of the power line 

voltage. The handling of this analysis was disucssed. McDonnell presented 

their method of controlling the reflected noise on the power system as used 

on the NASA Gemini. This method was discussed thoroughly and its potential 

application to the DAC subcontractors was discussed. Following agreements 

were reached on the power ripple problem. 

1. McDonnell proposed that the 1.5 volt value in Figure 1 be lowered. 

to 1.2 volts in order to remain within existing equipment specifications. DAC cannot agree to lowering the limit at this time, but 

will re-evaluate the assumptions used in arriving at the 1.5 volt 

limit. MAC stated they could technically agree to accepting 1.5 

volts, but, since equipment specs are affected, would have to discuss 

it further, and coordinate with the customer before a firm decision 

could be made. DAC noted that the total ripple seen on the power 

distribution system is dependent on the noise. fed back on the bus, 

and any ripple guarantee is dependent on the suppliers (DAC) control 

of uniform limitations of noise generation by all utilization equip= 

vent. 

2. Margins not to be included in IFS. Technical agreement was 

reached that no margin of safety should be added to the above 

susceptibility curve in the interface specification. The 6 dB 

EMISM safety margin would be applied to any rower utilization 

equipment which is identified as a critical circuit. 

3. It was technically agreed that the ripple noise fed back into 

the power bus by any given load should be apportioned in 

accordance to the dc current drawn by the load. For the purpose 

of the interface specification it was technically agreed that 

the Gemini B will not reflect an rms ripple in excess of 5% of 

the dc current load. 

SECRET - mem Hamm? 
WHS-383 

Page 54. of 84 NRO APPR FOR 

RELEASE I 2015 SECRET SPECIIAL HAK121.8 • 

The transient curves of the power quality specification were discussed. 

Particularly it was noted the major problem area is in the use of 

ground Tower during check-out. The basic problem with, transients is 

the increased duration of expected transient times in relation to 

transient duration times now on contract. The longer transient duration 

time during normal operation, as noted on limit I of Figure 2, must 

be further investigated by McDonnell. 

Three possible solutions were discussed which could lead to an agreement 

on transients. These were: 

a. (MAC-DAC) Determine if G/B must operate from Lab AGE power 

during check-out. 

b. (DAC) Investigate the possibility of using a sensor and 

power interrupter circuit to protect from AGE power transients. 

c. (MAC) Determine attenuation of transients afforded by MAC 

sub-bus filter. 

If the above investigations do not result in a solution, MAC will determine 

impact of meeting the transient- requirements shown in Figure 2. 

MAC and DAC will investigate the equipment test method to be used in the 

event the long duration transient requirements are imposed in the IFS. 

This would include a review of the acceptability of the McDonnell transient 

generator for such a test. 

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ATTACHMENT F 

6 db SAFETY MARGIN - EMISM DETERMINATION 

Susceptibility Threshold (Components) 

Engineering design analysis (verified by laboratory tests as required) will 

provide susceptibility threshold information. 

Susceptibility threshold will be described by plots showing malfunction 

amplitude versus frequency (for steady state ac) and malfunction amplitude 

versus pulse width (for transients). 

Test Equipment 

The PS subsystem will be operated by the Sensor Test Console. 

MPSS/PS lines will be operated by the MMTS (GE) through MPSS equipments. 

Interference meters, transient - volt - meters, and oscilloscopes will be 

used for testing. 

Transient detection will be accomplished using the following set-up. 

6 db SAFETY MARGIN TESTS - EMISM DETERMINATION 

Test Configuration 

The EMISM shall'be determined for critcal input/output lines of the PS subsystem 

(LM and MM) and for critical MPSS/PS interface lines in the MM. 

EMISM of MPSS/PS interface lines in the LM will be determined only by 

calculation. 

Critical lines within the PS subsystem (LM and MM) will be verified for proper 

EMISM on each prime unit. 

Critical MPSS/PS interface lines within the MM will be verified for EMISM. 

Philosophy for Determining EMISM 

EMISM will be determined by comparison of measured conducted interference 

to the susceptibility threshold of each line. 

EMC REQUIREMENTS - COMPONENTS 

Generated Interference 

64-4 with the following exceptions: 

1. Broadband interference limits 30Hz - 15 k Hz changed from 100 db above 

1 microampere/MHz to 134 db above 1 nlicroampere/MHz. 

2. Broadband interference limits 15 k Hz to MHz changed as follows: 

134db above 1 microampere/MHz at 15 kHz, decreasing linearly on the 

semilog plot to 105 db above 1 microampere/MHz at 150 k Hz, and decreasing 

linearly from there on the semilog plot to 50 db above 1 microampere/MHz at 

2 MHz. 

3. No radiated requirements in 1 GHz to 10 GHz range. 

Audio Susceptibility 

64-4 for all components using unregulated 28v power: 

1. Voltage introduced sequentially in both the primary power and return line, with 

component chassis and power return line grounded to ground plane. 

SPEEL MBA 
ty1

PPROVED FOR 

L SE 1 JULY 2015 

i 

Attachment F 

WHS-383 SPECYL11.L28 Page 58 of 84 

2. Tests at high, low and nominal line voltage and nominal temperature. 

3. Tests at high and low temperature and nominal voltage. 

Transient Susceptibility 

• Interface components using unregulated 28v power 

Primary power line to-return, + 100v 

▪ - Non-interface components using unregulated 28v power 

Primary power line to return, + 30v 

RF Conducted Susceptibility 

. 64-4 levels 

Radiated Susceptibility 

. 64-4 levels 

AF Induced into Cables 

. 64-4 levels 

AF Induced into Equipment 

. 64-4 levels 

EEDs 

Non-applicable 

EMC REQUIREMENTS - SYSTEM 

Compatibility 

• Proper functioning within the EKC system. 

6 db Safety Margin 

• Internal EKC system 

• Interface 

EMC REQUIREMENTS - I/F 

SSD Exhibit 64-4 

EK or GE Deviations Applicable to the I/F 

▪ 12 db to 6 db for EMISM 

▪ Bonding 5:1; 2.5 m a D. C. 

VENAll, NAHOIllau 
EMC TEST 

SUMMARY 

FV 

QTV 

DTV TESTS 

MEL HAEOLONG 

WHS-383 

NRO -""Page 59 of 84 OVED FOR 

RELE E JULY 201 

1AL 

• 

ATTACHMENT G 

15 June 1967 

---1 

DSS-1 INTER -COKPAT. TESTS ' 

DSS-1 S/S TESTS 

DC-1 TESTS 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SEM= NAHE 

WHS-383 

Page 60 of 84 

EMC TESTING 

• 

• DC-1 COMPONENT SIGNATURES 

- DETERMINE CONDUCTED GENERATION • 

- DETERMINE RADIATED GENERATION 

- DETERMINE RIPPLE SUSCEPTIBILITY 

- DETERMINE TRANSIENT SUSCEPTIBILITY . 

- PROBE FOR CIRCUIT SENSITIVITY THRESHOLDS 

• DSS-1 SUBSYSTEM COMPATIBILITY 

PCM TLM S/S 

COMMAND S/S 

NAVIGATION S/S 

- SIMULATE INTERFACES WITH OTHER SUBSYSTEMS 

- DETERMINE EMISM AT CRITICAL POINTS WITHIN THE SUBSYSTEMS 

• DSS-1 INTER-COMPATIBILITY 

• PCM/CMD/EPSD/CD 

SIMULATE INTERFACES WITH NAVIGATION 

• DETERMINE EMISM AT INTERFACES BETWEEN SUBSYSTEM 

• DETERMINE DEGRADATION, IF ANY, IN EMISM AT CRITICAL 

POINTS WITHIN SUBSYSTEM • 

INSERT RIPPLE AND TRANSIENTS ON POWER BUS 

• MEASURE CONDUCTED GENERATION ON POWER BUS 

. PaK/CMD/EPSD/CD/NAVIGATION • 

• DETERMINE EMISM AT INTERFACES BETWEEN AVE ELECTRONICS/NAV 

• DETERMINE DEGRADATION, IF ANY, IN EMISM AT INTERNAL CRITICAL 

POINTS 

• INSERT RIPPLE AND TRANSIENTS ON POWER BUS 

• MEASURE CONDUCTED GENERATION ON POWER BUS 
WHS-383 

Page 61 oT84 

NR APPROVED FOR 

RE 1 JULY 2015 SPELLNELII rs 

• DTV CMPATIBILITY 

- SUPPLEMENT COMPONENT SIGNATURE TESTING 

▪ DEMONSTRATE CONDUCTED COMPATIBILITY, TIME DOMAIN 

▪ DEMONSTRATE CONDUCTED COMPATIBILITY, FREQUENCY DOMAIN 

• DETERMINE CONDUCTED GENERATION SIGNATURE OF MPSS POWER BUSES 

- DEMONSTRATE IMMUNITY TO TRANSIENTS AND RIPPLE ON THE POWER 

BUSES 

• DEMONSTRATE IMMUNITY TO RF FIELDS 

DEMONSTRATE COMPATIBILITY WITH CITE 

NMAS AND LM INTERFACES ARE SIMULATED. 

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NRO APPROVED FOR 

D

RELEASE LY 2015 

SPECIAL bar SRS 

WHS-383 

Page 63 of 84 

MAJOR EMC TEST EgUIPMENT 

• AUTOMATIC SPECTRUM ANALYZER 

(14 KC TO 1 KMC) 

• TRANSIENT DETECTORS 

• TRANSIENT ANALYSIS EQUIPMENT 

• OSCILLOSCOPES/CAMERA 

• RFI RECEIVER 

(1-10 KMC) 

• TRANSIENT GENERATOR 

• SIGNAL GENERATORS 

MEWL HAULM 
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WHS-383 

Iiinrage 67 of 84 

• 

xtni) vuzctx Da HISTORICAL L00 

SPECIAL HANDLED 

114 EMC SYSTEM DEVELOPMENT TEST 

AT GE (VFTC) 

BASELINE: 

INPUT -- SUSPECT CRITICAL TEST POINT LIST FROM COMPONENT AND 

SUBSYSTEM DESIGN ENGINEERING EMC TESTS. 

OBJECTIVES: 

• PROVE 6 db SAFETY MARGIN 

• PROVE NO SYSTEM DEGRADATION DUE TO EMI 

(EXAMPLE TV MICROWAVE LINK) 

• MEASURE SYSTEM AMBIENT NOISE 

•REVALIDATE CRITICAL POINT MALFUNCTION LEVELS OF INTEGRATED SUBSYSTEMS 

,BY VEHICLE HARNESS. 

• - - • VALIDATE VEHICLE/AGE EMC INTERFACE 

-.• PROVE EMI SUBPRESSION OF ENVIRONMENTAL CONTROL 

• PROVIDE CRITICAL TEST POINT INPUT FOR SYSTEM QUAL VEHICLE AND 

stvEHInt 114F DEVELOPMENT TEST AT 

rr) 
' NRO APPROVED FOR 

- RELEA 1 D JULY 2015 NEU 1 NM 

WHS-383 

Page 68 of 84 

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S2C 
NRO APPROVED FOR 

RELEASE 1 JULY 2015 

SPEER Ill AHOME 

WHS-383 

Page 69 of 84 . 

TEST CONFIGURATION: DEvE.41- 

I. COMMAND SEQUENCES -- F °11- 1 CNA L 

1. SELECTED REPETITIVE COMMAND SEQUENCING TO VERIFY NO 

CHANGE OR VARIATION OF NOISE LEVELS 

2. TEST INTEGRATED MISSION PROFILE COMMAND SEQUENCE-TO VERIFY 

EMC FOR ALL COMMAND FUNCTIONS 

• TEE BOX INSTALLATION -- FOR CONDUCTED INTERFERENCE MONITORING 

D 
NRO AF5PROVED FOR 

D

REL 1 JULY 2015 

MAJOR EQUIPMENT LIST 

1. TRANSIENT DETECTORS 

(a) A THRESHOLD LEVEL DEVICE CAPABLE OF MEASURING POSITIVE AND • 

N=ATIV4 GOING TMNOIENTA rnon Sv To 250V OF AVAATTPN4.A4 

SHORT AS JpEc. 

2. AUTOMATIC SPECTRUM SCANNER AND PLOTTER SYSTEM 

(a) AN AUTO SPECTRUM DISPLAY AND SIGNAL RECOGNITION SYSTEM CAPABLE 

OF PLOTTING PEAK AND AVERAGE FUNCTION SIMULTANEOUSLY FROM 20 H 

TO 1GHZ 

(b) OR NF105 AND ASSOCIATED ACCESSORIES 

(c) NF112 (1 TO 10GHZ) 

3. CATHO-RAY OSCILLOSCOPES AND SCOPE CAMERAS 

OSCILLOSCOPES UP TO 85 MH WILL BE USED TO OBTAIN NOISE AND TRANSIENT 

SIGNATURES OF AMBIENT AND DYNAMIC INTERFERENCE 

4. TEE BOXES 

THESE ARE SPECIAL TEST BOXES, ADAPTERS AND CABLES WHICH WILL BE 

' DEVELOPED FOR SYSTEM TEST PURPOSES 

5. NOISE GENERATORS • 

SP= WHS-383 

Page 70 of 84 

VENAL HAND_LIING. 
NRO APPROVED FOR 

D

RELE 1 JULY 2015 spEcllaL 

115 EMC SYSuM OUAL TEST 

AT GE (VFTC) 

WHS-383 

Page 71 of 84 

BASE LINE: 

'INPUT -- RESULTS OF EMC DEVELOPMENT TEST 

(REDUCED CRITICAL TEST POINT LIST) 

OBJECTIVES: 

• PROVE 6 db SAFETY MARGINS PER 64-4 

• MEASURE SYSTEM AMBIENT NOISE (REDUCED) 

• SPOT CHECK ON ENVIRONMENTAL CONTROLLERS 

4 

• PROVE EMC OF STAGE/ SUBSYSTEMS 

A 

• PROVIDEICRITICAL TEST POINT LIST FOR FV3 EMC TESTING AT... 

AND VEHICLE 118 

• COMPLETE AND RECORD EMI HISTORICAL LOG WITH VEHICLE 114 

■••• am. a. 

s~cREr SPECIMILABLIIM 
NRO APPROVED FOR 

D

RE E 1 JULY 2015 

WHS-383 

NEE' NAKBLIFKIPage 72 of 84 

E (7, i 1 kam,4 CO2100 

114F EMC TEST (DEV-EA9-PI.E4- 

BASE LINE: 

INPUT -- 

1. INTERFACE CRITICAL TEST POINTS FROM 114 DEVELOPMENT EMC TEST 

2. CRITICAL TthI. POINTS FROM COMPONENT AND SYBSYSTEM DESIGN 

ENGINEERING EMC TESTS 

_ OBJECTIVES: A_T" itJ 1? -1 '21 1--• 

• PROVE 6 db SAFETY MARGIN OF MMFS/AS (PRIMO INTERFACE 

• CONFORM OR ELIMINATE CRITICAL TEST POINTS PREVIOUSLY ESTABLISHED 

- DURING THE 114 DEVELOPMENT EMC TEST USINGT THE ACTUAL PRIME BAY IN 

PLACE OF THE ELECTRICAL SIMULATOR 

• MEASURE AMBIENT NOISE LEVEL OF MMFS/AS PRIME INTERFACE 

• DETERMINE EMI EFFECT OF MMAS (PRIME) 

• PROVIDE UP-DATED CRITICAL TEST POINT LIST FOR 115 EMC TEST AT • 

• MAINTAIN VEHICLE HISTORICAL EMI LOG 

• • 

SECRET SPECIAL EMMA 
NRO APPROVED FOR 

D

RELEA JULY 201"5 

WHS-383 

Page 73 of 84 

118 EMC'SYSTEM. ACCEPTANCE TEST 

AT GE (VFTC) 

BASE LINE: 

INPUT -- REVISED CRITICAL TEST POINT LIST FROM VEHICLE 115 QUAL 

EEC TEST AT GE - VFTC 

OBJECTIVES: 

• PROVE 6 db SAFETY MARGIN PER 64-4 

*.REVISE CRITICAL TEST POINT LIST DUE TO BLOCK CHANGES IF ANY 

• MINIMUM AMOUNT OF CONNECTOR MATING AND DEMATING 

• PROVIDE INPUTS TO PROGRAM EMI HISTORICAL LOG 

SPEC [EL HAN 
NRO APPROVED FOR 

RELEASE 1 *JULY 2015 

D 

WHS-383 

Pag 74 of 84 

118 EMC TEST. 

AT DOUGLAS (H.B.) 

BASE LINE: 

INPUTS -- CRITICAL TEST POINT LISTS FROM 118 EMC ACCEPTANCE TEST 

AT GE (VTC) AND 118 QUAL EMC TEST AT 

OBJECTIVES: 

• PROVE 6 db SAFETY MARGIN OF FULLY MATED ORBITAL CONFIGURATION 

s ELIMINATE THOSE SUSPECT CRITICAL TEST POINTS OF THE LM/MMFS INTERFACE 

MEASURE AMBIENT NOISE LEVELS OF LM/MMFS 

• PROVIDE UP-DATED CRITICAL TEST POINT LIST 

4 PROVIDE INPUTS TO PROGRAM EMI HISTORICAL LOG 

• 

SEER NZ* 
WHS-383 

Page 75 of 84 

_ . 

NRO APPROVED FOR 

RELEASE 1 JULY 2015 

D 

118 EMC L TEST. 

L 

AT VAFB 

BASE LINE: 

iNrat PROVEN 6 db SAFETY MARGIN ON ALL CRITICAL TEST POINTS FROM 

118 EMC TEST AT DOUGLAS. (H.B.) 

OBJECTIVES: 

• PROVE VEHICLE OPERATES WITH NO DEGRADATION IN THE LAUNCH 

PAD ENVIRONMENT 

• NO VEHICLE HARNESS CONNECTOR DE1ATING 

• PROVE SUCCESSFUL VEHICLE OPERATION BY COMPLETION OF A TINT' IN AN 

.ACTUAL RADIATED FIELD 

E Ep 

•- 

• 

room taumn t. 
NRO APPROVED 

RELEASE 1 JULY 

- A 

WHS-383 

Page 76 of 84 VEIL NAKDLIR 

STei-D VERTICAL TE ST 

SET-UP 

VE1-1 cLESurf': gr Gruj 

Lvt S 

7 Ci1/46LE Si-0(A 5 

S

Af3L.E LAW: ZR, 

M Nl F S 

• 

1M ASA 

s• • ion ralmmum. 

sTp,t§-kcila NAKDA§ K, Pt._ AT rcgm 
NRO APPROVED FOR 

• • RELEASE 1 .3 015 

J. SPECL HANDL 

WHS-383- l) 2

-- 

Page 77 of-$4 

ATTACHMENT H 

ELECTROMAGNETIC C OVAT I BI LI T Y TEST FLOW 

FOR THE 

LABORATORY MODULE, LABORATORY VEHICLE, AND FLIGHT VEHICLE 

The following pages provide an overview of the subject 

testing. It is not the intent of this description to provide 

test plan and test flow details. These are, or will be, the 

subject of other documents. The EMC testing is representative 

of. Douglas planning and does not necessarily represant a 

coordinated and agreed to plan where contractors other than 

Douglas are involved. 

VIVAL NAND= 
V 

FLIGHT VEHICLE 

A 

TEST CONFIGURATION 

IV 

LAB VEHICLE 

A 

III 

LAB MODULE 

QUAL TEST VEHICLE 

WHS-383 

Page 78 of 84 NRO APPROVED FOR 

RELEAS D ULY 2015 PEC:L 

':TYPE OF TEST 

QUALIFICATION TEST 

QUALIFICATION TEST 

PART I DEVELOPMENT TEST 

(DATA USED TO ESTABLISH 

EMC QUALIFICATION) 

TEST LOCATION AND 

PARTICIPANTS 

VAFB-ASSOCIATE CONTRACTORS 

• 

HUNTINGTON BEACH -

ASSOCIATE CONTRACTORS . 

:HUNTINGTON- BEACH PSIA-. 

DOUGLAS 

ENGINEERING DEVELOPMENT. 

TEST 

PART I ENGINEERING 

DEVELOPMENT TESTS 

II 

EDCTU 

I 

COMPONENT AND/OR 

SUBSYSTEM DEV TESTS 

H.B. SYSTEM. DEVELOPMENT 

AREA-DOUGLAS 

DOUGLAS AND SUBCONTRACTOR 

FACILITIES 

EMC TEST FLOW 
APPROVED FOR 

ASE 1 JULY 2015 SPECRI iiir_A,111...rrILJi 11,grJk111 WHS-383 

Page 79 of 84 

EMC TESTING Cr DOUGLAS VEHICLE COMPONENTS AND SUBSYSTEMS 

Test Objectives and Approach 

The ultimate objective of these tests is to ascertain that the 

components and/or subsystems have met their EMC design requirements. 

Within this overall objective are the derivation of malfunction 

threshold curves and EMISM test point (or test method) identification 

for subsystems and circuits which are susceptible to the EM environment. These data are used during subsystem and system integration 

tests to establish the electromagnetic interference safety margins. 

Test Specimen Descrintion 

The test specimen is the component, where adequate component 

interfaces are used, or the subsystem or major portion thereof. • 

The bulk of the tests are classified as development tests, but 

the test sample configuration and test procedures are controlled to 

the extent necessary to assure data of a quality which is admissible 

toward the EMC qualification of the equipment. The "development test" 

status is retained to assure early identification and correction of 

EMI problems, and to assure that equipment delivered for use in system 

integration testing will have had the benefit of the EMC development 

cycle. 

Test Environment and/or Conditions 

Most of the component EMC testing'is conducted in a screen room 

environment. Test requirements are defined in the applicable Technical 

Requirement specification and/or CEI specification. The EXC design 

requirements and test requirements are essentially the same as those 

identified in SAFSL Exhibit 11005, which is in turn very similar to 

SSD Exhibit 64-4. 

SPCC TI DOMINI 
NRPROVED FOR bO 

RE E 1 JULY 2015 

WHS-383 SPEC EM NUM Page 80 of 84 

II EMC VEHICLE SYSTEM DEVELOPMENT TESTING USING THE ELECTRONIC DEVELOPMENT 

and COMPATIBILITY TEST UNIT (EDCTU) 

Test Objective and Approach 

The Laboratory Module electrical subsystems are assembled and 

integrated into an electrically functioning system for the purpose of 

determining inter-subsystem compatibility, EDCTU/ASTEG (All Systems Test 

Group) compatibility, and development of the checkout software programs. 

Each of the EDCTU subsystems is operated independently and then in 

conjunction with other subsystems to simulate a vehicle configuration. 

From the standpoint of EMC, the EMISM test points are monitored and the 

data are compared with data obtained during the component and subsystem 

development testing. The techniques of EMC measurement using the RFI 

Test Set (CEI 207417A) and other standard instruments are developed at 

this time. Any discrepancies between the desired and acquired test data 

are recorded, with corrective action taken where necessary. 

Test Specimen Description 

The EDCTU is an operating assembly of vehicle equipment.arranged 

on vertically mounted metal panels. Four panels form a large square with 

good physical access to both sides. The physical placement of equipment 

roughly duplicates that of the Laboratory Module, but the ability to 

accomplish useful system development takes precedence over simulation of 

the vehicle physical'layout. Wire runs are longer and equipment spacing 

is frequently greater than in an actual vehicle. The resulting electromagnetic simulation is not exact, but the usefulness of the EDCTU as an 

EMC design tool is still very thigh. 

Wherever practicable, the EDCTU equipment will be EMC qualified prior 

to use in the EDCTU. Where this is not the case, the equipment will have 

at least progressed quite far in its EMC development cycle prior to use 

in the EDCTU. The design objective is to use EMC qualified equipment. 

Test Environment and/or Conditions 

The EM environment is that of the EDCTU test area. This area is 

located in a new, metal clad building which has been used previously and 

successfully for the same purpose on another program. No attempt is made 

to provide shielding equivalent to a screen room as radiated interference 

and susceptibility tests on the EDCTU are not planned. The facility has 

been checked and found to be void of harmful interference. The equipment 

is operated by Douglas personnel with support from subcontractors, where 

required. EMC testing is conducted throughout the EDCTU development 

cycle and during EDCTU/ASTEG interface compatibility testing. 

SPEMIL pPLike 
: APPROVED FOR 

1) 

ASE1JULY2M5 VICE NEBLIZI:3 WHS-383 

. Page 81 of 84 

III EMC TESTING ON THE LABORATORY MODULE QUALIFICATION TEST VEHICLE (LMQTV) 

Test Objective and Approach 

The object of this test is to verify that the Electromagnetic 

Compatibility (EMC) status of the Laboratory Module as determined by the 

ASTEG (All Systems Equiptent Group) is actually indicative of the overall 

EMC of the LM. 

The ASTEG will determine theEMO status of the LM during the checkout 

of the LM in the PSIA (Production Systems Integration Area). These ASTEG 

EMC measurements are standard readouts for all production LM's and consist 

of GO—NO GO measurements to verify that the vehicle electrical bus 

voltage transients have not exceeded the permissible maximum value, and 

to verify that the electromagnetic interference safety margins (EMISM) on 

selected critical susceptible subsystems are within acceptible limits. 

Actual safety margins are not measured by ASTEG. • 

Susceptible circuits are identified during subsystem design and 

development (not a part of this test). The susceptible circuits to be 

monitored by ASTEG are selected on the basis of their being the most 

indicative of the overall EMC of the critical subsystem with which they 

are associated. Generally, these circuits are those which are the most 

sensitive to an adverse electromagentic (EM) environment. 

When the standard PSIA LM checkout has indicated acceptance of the 

LMQTV, manual EMISR measurements using the EMI test set, CEI 207417A, and 

standard laboratory instruments will be made on the circuits monitored for 

EMC status by ASTEG and on certain other susceptible circuits which, 

during subsystem development, were determined to be less susceptible to 

the EM environment than those selected for the ASTEG readout. The purpose 

of these measurements is to verify that the EMC status determined by the 

ASTEG is based on ASTEG measurements of the most susceptible toint or 

points in each of the critical susceptible subsystems, and that the LM 

configuration has not altered the validity of the original susceptible 

circuit selection which was based on a component, subsystem, or EDCTU 

configuration tests. 

LMQTV EMC tests are classified as Part I development testing with 

the test data used to establish the EMC qualification of the Laboratory 

Module. 

. Test Specimen Description 

The specimen is the LMQTV after it has successfully passed the 

standard production PSIA acceptance test. The specimen remains in the 

LH PSIA test stand with all ASTEG cables connected. 

SPECHIL HAREM 
' NRO APPROVED FOR 

EASE 1 JULY 2015 

III EMC TESTING ON THE LABORATORY MODULE QUALIFICATION TEST VEHICLE (LMQTV) 

(Continued) 

Test Environment and/or Conditions 

The electromagnetic environment is that which exists in the PSIA. 

Although the final portion of the test will be run on the LMQTV after it 

has passed the PSIA acceptance tests, as much work as may be possible 

will be conducted on a non-conflicting basis during the PSIA production 

acceptance testing. The vehicle subsystems will be operated on ground 

power and vehicle power. During a short portion of the test the radio 

frequency subsystems will be operated open-loop to the extent permitted 

by FCC/Range restrictions. 

The tests are conducted by Douglas personnel. 

SPIEC114 

VEVA. HAN-C WHS-383 

Page 82 of 84 
O APPROVED FOR 

LEASE 1 JULY 2015 MR NAMUR% 

IV EMC TESTING ON THE LABORATORY VEHICLE 

Test Objectives and Approach 

WHS-383 

Page 83 of 84 

The purpose of this test is to establish the electromagnetic 

compatibility qualification of the Laboratory Vehicle by demonstrating 

that the significant electrical/electronic portions of the vehicle are 

capable of operating together while maintaining a contractually prescribed 

margin of safe operation in specific designated critical susceptible 

subsystems. This test is a continuation of similar tests conducted at 

lower levels of vehicle assembly wherein the electromagnetic interference 

safety margins (EMISM) for critical susceptible subsystems were established 

in the limited system segment environment. The primary difference between 

this "LV" test and previous EMC system segment tests is that the subsystems 

of the Laboratory Vehicle are now operated in the electromagnetic environment created by the interconnected subsystems of the Laboratory Vehicle, 

Test Specimen-Description 

These tests are conducted on a flight configuration (vehicle #3) 

while it is in the Douglas Huntington Beach Production Systems Integration 

Area. The specimen remains in the test stand during the test. The 

Laboratory Module and Mission Module (Mission Payload System Segment) have 

been previously qualified for EMC prior to joining to form the Laboratcry 

Vehicle. 

Test Environment and/or Conditions 

The ambient EM environment is essentially the same as previously 

presented to the LMQTV during its EMC testing. The primary difference 

is the presence of the fully equipped Mission Module. No significant 

EM environment changes are expected for the Laboratory Module, although 

this will be a new external environment for the Mission Module. 

The EMC tests are conducted after the successful completion of the 

Laboratory Vehicle checkout and prior to the Laboratory Vehicle 

,vibration testing. The tests are under the.overall direction of Douglas 

with the actual measurements made by the associate contractor who supplies 

the portion of the vehicle under test. Test equipment and its maintenance 

are supplied by each associate contractor in support of his portion of the 

test. 

DINIBLEI 
APPROVED FOR 

EASE 1 JULY 2015 

WHS-383 

Page 84 of 84 SPECIA.. 

V VANDENBERG EMC TEST 

Test Objective and Approach 

The objective of this test is to qualify the MOL flight vehicle to 

the program electromagnetic interference requirements by demonstrating that 

selected critical test points within the flight vehicle, so chosen that they 

are indicative of total segment performance, have a minimum 6 db safety 

margin below the susceptibility levels of the critical test points. 

Critical test points are identified by each segment contractor and 

approved by the SPO. These critical test points are measured - either by 

normal AGE, equipment (such as CAGE, CITE or ASTEG), by-special test equipment (such as a RFI test set), or by both. It is not anticipated that 

standard RIFI equipment (such as the NF-105) will be used, except possibly 

for trouble shooting. 

• 

All equipment will be operated wherever practicable. Fuel and 

cryogenics will not be loaded, inert or substitute gases may be substituted. 

That equipment which is not capable of operation in the earth's atmosphere 

(such as some EC&LS components) will be exempt from operation during this 

test; analysis will be used in lieu of actual tests. 

Pertinent elements of 

countdown through countup, 

seperation. Repetition of 

after trouble-shooting and 

the full mission sequence will be simulated from 

injection, on-orbit, up to and including Gemini 

portions of a simulated mission may be required 

for open-loop radiation tests. 

Test Specimen Description 

The test specimen will be a standard, fully mission configured NOL 

flight vehicle consisting of a TIIIM booster, the Mission Payload segment, 

a Laboratory Module/Mission Module, a Gemini spacecraft, and flight crew 

equipment (where practicable). Only OGE normally used with flight vehicle 

equipment will be utilized, except for specialized RFI test sets (where 

required and approved). Flight vehicle qualified systems only shall be • 

used except where approved simulators are required (such as EED's). 

Test Environment and/or Conditions 

The test environment will be that of the MOL launch complex at 

Vandenberg Air Force Base, including the operation of all AGE normally 

used in countdown and countup operations, and operation of all base support 

equipment normally used during the launch and injection sequence of a 

MOL mission. 

The tests are under the overall direction of Douglas. The actual 

testing is conducted by the associate contractor who supplies the system 

under test. 

D SPECIIA LOODURS.