MIL-STD-461F Presentation Leading technology into the new millennium 7800 Highway 20 West Huntsville, AL 35806 256-837-4411

MIL-STD-461F Presentation

Leading technology into the new millenniumLeading technology into the new millennium

7800 Highway 20 West7800 Highway 20 WestHuntsville, AL 35806Huntsville, AL 35806

256-837-4411256-837-4411www.wylelabs.comwww.wylelabs.com


Introduction; MIL-STD-461FIntroduction; MIL-STD-461F

Objective : • Review MIL-STD-461F revision

• Provide information regarding current ideas to be incorporated into MIL-STD-461G

• Provide information for PAR 1688, pertaining to Modules and Sub-components based from MIL-STD-461 tests and procedures


MIL-STD-461FMIL-STD-461F

Test I.D. Section/Table Figure Page Change Description Summary

General Requirements

4.2.7 8Revisions or changes to module equipment needs to be re-validated per standard.

This applies to form, fit and function (plug –n- play) replacement

4.3.10.2 and 40.3.10.2 14Test Software description is required, minimum for commercial s/w = manufacturer,

model and revision

4.3.10.3.1 and 40.3.10.3

14Table II Bandwidth and measurement time, authorized max. hold and multiple scan as

long as the total sweeps times are equal to or greater than values within table.

4.3.10.4.3, Table III, and Table A-1

15Thresholds of susceptibility, added comments stating susceptibility is not in

conformance with standard and must be documented

Table IV and 50.11 25 Added CS106

Table V 26Surface Ships and subs requires CE101. Added CS106; and subs will require limited CS116 & RS101

CE101 5.4.1 27 Applicability for surface ships was added



CS106 Pulse


CE106 5.6.1 40 Better description of the 2&3 harmonic suppression

CS101 5.7.3.4 48CS101, Calibration to max power level limit and ensure no degradation from ripply

voltages

CS106 5.11. and 50.11 59

Added CS106 requirement and increased Section numbers for standard. Appendix adds discussion regarding CS106

CS106, Conducted Susceptibility, Transient requirement pertains to Power Leads only

CS109 5.12.1 66Applicable to surface ship equipment that have an operating frequency ≤100 kHz

and have the sensitivity to measure ≤ 1μV




CS114

5.13.3.2 70

CS114, Ships limit amplitude from 4 kHz to 1 MHz to 77 dBuA. Appendix added discussion regarding the 77 dBuA Navy requirements

CS114, Low frequency extension for submarines power sources. Applies to power leads only

Figure CS114-1 74 Figure changed to reflect requirements.

CS115 Table V 26CS115, applicability change regarding submarine and surface ships. This is

required only when specified by Procuring Agency. Changed from Limited to Specified

CS116

Table V 26CS115, applicability change regarding submarine and surface ships. This is

required only when specified by Procuring Agency. Changed from Limited to Specified

Figure CS116-2 90 CS116, One Limit for everyone - 10 Amp curve


MIL-STD-461FMIL-STD-461FTest I.D. Section/Table Figure Page Change Description Summary

RE101 5.16.3.4 92RE101, Adds method to increase loop antenna distance until test specimen complies w/ limit and record distance

RE102

5.17.3.4 100RE102, Procedure Step 3; Requires 10 pF capacitor connected to the rod

mount as shown in Figure RE102-8. Commercial jigs and injection networks are not permitted

RE102-6 107Rod height changed the 41” rod element mid-point is to be at 120 cm

above the chamber floorCo-axial exist rod base and it is connected to floor through ferrite bead

RE102-8 109 Added figure to show Procedure Section, Calibration,

RE103 5.18.1 110 Requirement met if harmonics comply with RE102 limit

RS101 5.19.1 116RS101, applicability change regarding submarine with an operating

frequency ≤100 kHz and have sensitivity to measure ≤1µV

RS103

5.20.1 127 Added 100 MHz to 1 GHz range and increase number of steps

5.20.3.4.d.1.c 130Requirement to ensure the fundamental is what the E-Field sensor is

measuring and the sensor is not measuring one of the fundamental’s harmonics




CE101

Table 204 Added surface ships

A-6 206 CE101 limits for a 5 uH LISN

A.5.3 206 Alternative method (5uH LISN) for CE101 description

CE102 A.5.5 207

Alternate method to start a 150 kHz if CE101 was conducted using 5uH LISN

And more discussion regarding 5uH LISN

RS103 A.5.20 249

Standards authorizes increase antenna distance in order to increase the antenna’s half-power beam width and reduce the number of antenna positions required




Changes to DIDs n/a

DI-EMCS-80199, document reference update

DI-EMCS-80200, Expands emissions plot presentation explanation and additional susceptibility info

DI-EMCS-80201, computer control soft ware description, modulation description

http://assist.daps.dla.mil/quicksearch/

Link


MIL-STD-461GMIL-STD-461G

The largest proposed change is adding a new test section for Electrostatic Discharge. (ESD). Mr. Fred Heather, Electromagnetic Environmental Effects (E3) Lead for the U.S. Government’s F-35 Joint Strike Fighter Program has created an ESD test section. He was not able to submit this section in time to have it incorporated into Revision F.

There is a high probability the ESD section will be included within the next MIL-STD-461 revision. Mr. Heather believes the MIL-STD-464 does not provides adequate direction to conduct ESD testing.


PAR 1688PAR 1688This is a potential new standard. It basically applies MIL-STD-461 type

testing to sub-components and modules.

There will be individual test changes as appropriate to test the specimens

an example is RE102. The method right now is near field measurements.

Fred Heather is looking for volunteers to participate within the standard design group

Right now everything is being geared to NAV-Air since their committee is the only

group within the committee. The draft is available from the link below:

http://www.vita.com/vso/vso200711/presentations/0915-p1688-overview.pdf


ReferencesReferencesEMC EXPO 2007 Committee, Washiington Labratories, LTD.

Conformity, Volume 13, Issue 1, January 2008An Update of MIL-STD-461F by Ken Javor [email protected]

MIL-STD-461E and MIL-STD-461F

End of Presentation

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MIL-STD-461F Presentation Leading technology into the new millennium 7800 Highway 20 West Huntsville, AL 35806 256-837-4411