MIL-STD-704A

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MIL-STD-704A TEST REPORT

1. ADMINISTRATIVE DATA AND TEST SUMMARY

1.1 Administrative Data

Client

Contact Kevin Farnsworth

Email N/A

Date 6/21/2016

Unit Model

Serial

MIL-STD-704A

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1.2 Contents

Contents 1. ADMINISTRATIVE DATA AND TEST SUMMARY ...................................................................... 2

1.1 Administrative Data ............................................................................................................... 2 1.2 Contents ................................................................................................................................. 3 1.3 Power Supply Tests ............................................................................................................... 4 1.4 MIL-STD-704A Test Results .................................................................................................. 5

2. TEST SITE INFORMATION .......................................................................................................... 6 2.1 Ground Plane ......................................................................................................................... 6 2.2 Detection System ................................................................................................................... 6 2.3. Test Equipment ..................................................................................................................... 6

3. SYSTEM CONFIGURATION ........................................................................................................ 7 3.1 Basic Set-up ........................................................................................................................... 7 3.2 MIL-STD-704A Electric Power, Direct Current .................................................................... 7 3.4 – Diagrams.............................................................................................................................. 9

4 LDC Testing ................................................................................................................................ 14 4.1 LDC101 - Load Measurements ........................................................................................... 14 4.2 LDC102 - Steady State Limits for Voltage ......................................................................... 16 4.3 LDC103 – Voltage Distortion Spectrum ............................................................................. 18 4.4 LDC104 – Total Ripple ......................................................................................................... 20 4.5 LDC105 – Overvoltage Transients ..................................................................................... 22 4.5.1 LDC105 – Undervoltage Transients ................................................................................ 26 4.5.2 LDC105 – Combined Transients ..................................................................................... 30 4.5.3 LDC105 – Repetitive Normal Voltage Transient Test .................................................... 33 4.6 LDC201 – Power Interrupt Test Report .............................................................................. 35 4.7 LDC301 – Abnormal Steady State Limits for Voltage Test Report ................................. 39 4.8 LDC302 – Abnormal Overvoltage Transients ................................................................... 41 4.8.1 LDC302 – Abnormal Undervoltage Transients Test Report ......................................... 45 4.8.2 LDC302 – Abnormal Combined Transients Test Report .............................................. 49 4.9 LDC601 – Power Failure ...................................................................................................... 51 4.9.1 LDC601 – Polarity Reversal ............................................................................................. 53

MIL-STD-704A

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2. TEST SITE INFORMATION The test site is located at: Core Systems, Inc. 13000 Danielson St., Q Poway, CA 92064 2.1 Ground Plane The emissions and susceptibility portions of the testing was performed on a ground plane. The ground plane consisted of an 8’ x 3’ x 1/8” thick copper plate mounted on a wooden bench and is connected to the ground rod via a copper bus bar 2’ wide and 0.25" thick 2.2 Detection System The automated detection system used in emission testing consists of a Spectrum Analyzer controlled by a computer. Preamplifiers used where necessary and where they are used an appropriate notation are made in the relevant section of the report. 2.3. Test Equipment All of CORE SYSTEMS primary reference standard devices (e.g. vector voltmeters, multimeters, attenuators and terminations, RF power meters and their detector heads, oscilloscope mainframes and plug-ins, spectrum analyzers, RF preselectors, quasi-peak adapters, interference analyzers, impulse generators, signal generators and pulse/function generators, field-strength meters and their detector heads, etc.) and certain secondary standard devices are periodically recalibrated by: • A manufacturer of Measurement and Test Equipment (M&TE), if the manufacturer uses NIST-

traceable standards and is ISO Standard 17025-accredited as calibration laboratory either by NIST or by another accreditation body (such as A2LA) that is mutually recognized by NIST; or

• A manufacturer of M&TE Calibration is required to furnish CORE SYSTEMS with a calibration test report and/or certificate of calibration, and a “calibration sticker” on each item of M&TE that is successfully calibrated. Calibration intervals are normally one year, except when the manufacture advises a shorter interval or if US Government directives or client requirements demand a shorter interval. Items of instrumentation/related equipment which fail during routine use, or which suffer visible mechanical damage (during use or while in transit), are sidelined pending repair and recalibration. (Repairs are carried out either in-house [if minor] or by a CORE SYSTEMS-approved independent [third party] metrology laboratory, or by the manufacturer of the item of M&TE).

MIL-STD-704A

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3. SYSTEM CONFIGURATION

3.1 Basic Set-up

3.2 MIL-STD-704A Electric Power, Direct Current Description The purpose of this test is to define the standard interface requirement for and the constraints on the design of aircraft powered user equipment that will utilize 28Vdc direct current (DC) electric power. In any system involving power source, distribution network, and load (user equipment), the characteristics at the system and user equipment interface are mutually dependent on the design and operation of both. In order for the electric power system to perform within the established tolerances, it is necessary to place constraints on the power source, the distribution system, and the user equipment. .

MIL-STD-704A

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4.3 LDC103 – Voltage Distortion Spectrum Power Group: DC – 28V DC Supply Source

Report Name: Mil-Std 704 Test Report

Report print date: 06-19-2016

Program version: AC Source CIGuiSII ,version: 3.0.0 - July 28, 2015

AC or DC Source information:: Model = 15003iX, Serial no.=

Table LDC: Test Result:

Test completed

Time test started: June 19 Time test completed: June 19 Selected test type: DC Voltage test Test operator: Robert Lewis

EUT description: Rugged C4948

Requirements

Test Condition Frequency of Distortion

MIL-STD-704A Amplitude

A 10Hz 0.900 Vrms B 25Hz 0.900 Vrms C 50Hz 0.400 Vrms D 60Hz 0.320 Vrms E 250Hz 0.320 Vrms F 1kHz 0.790 Vrms G 1.7kHz 1 Vrms H 2kHz 1 Vrms I 5kHz 1 Vrms J 6.5kHz 1 Vrms K 10kHz 0.400 Vrms

MIL-STD-704A

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Results with nominal voltage (28 Vdc)

Test Voltage Frequency Amplitude Time Pass/Fail

A 28 Vdc 10Hz 0.900 Vrms 5 Minute Pass B 28 Vdc 25Hz 0.900 Vrms 5 Minute Pass C 28 Vdc 50Hz 0.400 Vrms 5 Minute Pass D 28 Vdc 60Hz 0.320 Vrms 5 Minute Pass E 28 Vdc 250Hz 0.320 Vrms 5 Minute Pass F 28 Vdc 1kHz 0.790 Vrms 5 Minute Pass G 28 Vdc 1.7kHz 1.000 Vrms 5 Minute Pass H 28 Vdc 2kHz 1.000 Vrms 5 Minute Pass I 28 Vdc 5kHz 1.000 Vrms 5 Minute Pass J 28 Vdc 6.5kHz 1.000 Vrms 5 Minute Pass K 28 Vdc 10kHz 0.400 Vrms 5 Minute Pass

Results with low voltage (24 Vdc) Test Voltage Frequency Amplitude Time Pass/Fail

A 24 Vdc 10Hz 1 Vrms 5 Minute Pass B 24 Vdc 25Hz 0.950 Vrms 5 Minute Pass C 24 Vdc 50Hz 0.562 Vrms 5 Minute Pass D 24 Vdc 60Hz 0.320 Vrms 5 Minute Pass E 24 Vdc 250Hz 0.358 Vrms 5 Minute Pass F 24 Vdc 1kHz 0.810 Vrms 5 Minute Pass G 24 Vdc 1.7kHz 1.02 Vrms 5 Minute Pass H 24 Vdc 2kHz 1.09 Vrms 5 Minute Pass I 24 Vdc 5kHz 1.03 Vrms 5 Minute Pass J 24 Vdc 6.5kHz 1 Vrms 5 Minute Pass K 24 Vdc 10kHz 0.420 Vrms 5 Minute Pass

MIL-STD-704A

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4.4 LDC104 – Total Ripple Power Group: DC – 28V DC Supply Source

Report Name: Mil-Std 704 Test Report

Report print date: 06-19-2016

Program version: AC Source CIGuiSII ,version: 3.0.0 - July 28, 2015

AC or DC Source information:: Model = 15003iX, Serial no.=

Table LDC: Test Result:

Test completed

Time test started: June 19 Time test completed: June 19 Selected test type: DC Voltage test Test operator: Robert Lewis

EUT description: Rugged C4948

Test Condition

Ripple Frequency Components

MIL-STD-704A Amplitude of Ripple Component Vrms

MIL-STD-704B, C, D, E, & F Vrms

A

1200 Hz 1.00 Vrms 0.80 Vrms 2400 Hz 0.20 Vrms 0.16 Vrms 3600 Hz 0.33 Vrms 0.26 Vrms 4800 Hz 0.10 Vrms 0.08 Vrms 6000 Hz 0.16 Vrms 0.13 Vrms 7200 Hz 0.05 Vrms 0.04 Vrms 8400 Hz 0.08 Vrms 0.06 Vrms

B

2400 Hz 0.80 Vrms 0.80 Vrms 4800 Hz 0.16 Vrms 0.16 Vrms 7200 Hz 0.26 Vrms 0.26 Vrms 9600 Hz 0.08 Vrms 0.08 Vrms 12000 Hz 0.13 Vrms 0.13 Vrms 14400 Hz 0.04 Vrms 0.04 Vrms 16800 Hz 0.06 Vrms 0.06 Vrms

MIL-STD-704A

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Test Condition

Results Performance Voltage Voltage Distortion

Factor Time Duration at Condition

Pass/Fail

A

28 Vdc 2.05 No Units

30 min Pass

Ripple Frequency Component

Amplitude of Ripple

Unit passed with no software or hardware failures. Frequencies were matched as closely as possible to 704A specifications.

1203 Hz 0.98 Vrms 2406 Hz 0.22 Vrms 3610 Hz 0.38 Vrms 4808 Hz 0.12 Vrms 6000 Hz 0.18 Vrms 7202 Hz 0.07 Vrms 8400 Hz 0.10 Vrms

B

Voltage

Voltage Distortion Factor

Time Duration at Condition

Pass/Fail

24 Vdc 1.62 No Units

30 min Pass

Ripple Frequency Component

Amplitude of Ripple

Unit passed with no software or hardware failures. Frequencies were matched as closely as possible to 704A specifications.

2400 Hz 0.80 Vrms 4810 Hz 0.18 Vrms 7210 Hz 0.28 Vrms 9601 Hz 0.10 Vrms 12010 Hz 0.14 Vrms 14400 Hz 0.06 Vrms 16801 Hz 0.08 Vrms

MIL-STD-704A

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End of report