Electromagnetic black sky responses of power and control. Mil std 188 125 1 can also be used for hemp protection of other groundbased communicationselectronics facilities that require hemp hardening. The mil std 188 125 1 test specification defines the design and testing criteria for specifically designated fixed groundbased facilities in hemphardened, critical, timeurgent c4i networks. Over the years it has become apparent that improvements are needed in the standard. Because there is no filter insertion loss requirement within mil std 188 125, a standard design was developed to be commensurate with the mil std 188 125 shielding attenuation requirement of 20db at 10khz and 80db from 10mhz to 1ghz.
Mil std 188 125 1 highaltitude electromagnetic pulse hemp protection for ground based c4i facilities performing critical, time urgent missions, part i, fixed facilities, dated 17 july 1998, with change notice 1, dated 7 april 2005. Mil std 188 125 1 2 appendix b pulse current injection pci tests. The phase i effort should produce samples of sufficient size for testing against these standards typically 14 x 14 in. Mil std 188 125 1 provides protection and test requirements to build a shielded building against the threat of highaltitude electromagnetic pulse hemp produced by a nuclear detonation in the upper atmosphere. Mil std 464 electromagnetic environmental effects requirements for systems, dated 1 december, 2010. Filters for power lines with hempprotection according to mil. Mil std 188 125 1 establishes minimum requirements and design objectives for highaltitude electromagnetic pulse hemp hardening of fixed groundbased facilities that perform critical, timeurgent command, control, communications, computer, and intelligence c4i missions. These rates of this waveform family include 9600, 12800, 16000 and 19200 bps all coded. Amerem 2018nuclear environments and effects standards. Mil std 188 125 2, highaltitude emp protection for transportable systems 1999 u. Documents sold on the ansi standards store are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in hard copy. Hemp antenna filter design worksheet iaw milstd188125.
Implementation of milstd1881251 is supported by milhdbk423, high altitude. Features exellent protection of 2 lines 250v 5060hz and 4 lines 440250v 5060hz for supply applications in fixed installations with current ratings form 3a up to 3000a. Verification of small and mobile facilities is usually performed with the exposure of the system to a threat level emp using a pulse simulator as presented here. Special electrical poe protective device per milstd1881251 features. This military standard is approved and mandatory for use by all departments and agencies of defense dod in accordance with dod instruction 5000. Milstd188125a highaltitude electromagnetic pulse hemp. Mil std 188 125 1 highaltitude electromagnetic pulse hemp protection for groundbased c41 facilities performing critical, timeurgent missions part 1 fixed facilities. Military standard grounding, bonding and shielding for common long haultactical communication systems including ground based communicationselectronics facilities and equipments milstdib8124b 1 feb 92 superseding mils. Critical design issues in protecting against emp and hemp. Filters for power lines with hempprotection according to. The systems provided cover the short pulse e1 and the intermediate pulse e2 tests. Gap of mated standard test connector, series qsc 212. They specify pci pulse current injection testing techniques to demonstrate the integrity of the protection system, but require specialist test equipment capable of.
Originally, military standard 188 mil std 188 covered. Signal type maximum power handling watts minimum shielding effectiveness db antenna passband maximum passband insertion loss db antenna impedance w. Milstd188185 interoperability standard for uhf misaltcom. Hempunique acceptance and verification test techniques are provided in. Mil std 188 125 1 not 1 highaltitude electromagnetic pulse hemp protection for groundbased c41 facilities performing critical, timeurgent missions part 1 fixed facilities. Hemp filter design to meet mil std188125 pci test requirements. The unit tested met all applicable acceptance pci performance requirements given in milstd1881251. Milstd1881251 ii highaltitude electromagnetic pulse hemp protection for fixed groundbased ci facilities performing critical, 4 timeurgent missionsf o r e w o r d 1. Modernization of enterprise terminals high performance and reliability for global reach communications. Emphemp protectorfilters requirements of milstd188. Protection against emphemp and lightning overvoltage and electromagnetic interferences. Gaven industries inc will design and build your fixed site hemp shielded enclosure in accordance with mil std 188 125 1.
The handbook also includes planning, management, logistics, and data requirements for hemp protection acquisition programs and hardness maintenance hardness. Keystone compliance has completed numerous site surveys to determine the level of protection against hemp attacks. According to the dod the mil std 188 100 series contains technical standards and design objectives which are common to both the long haul and tactical communications systems. Mil std 188 125 establishes requirements and design objectives for highaltitude electromagnetic pulse hemp hardening of both fixed and transportable systems 2,3. These procedures shall be used for shielding effectiveness acceptance testing of. But i am finding that while mil std 188 114a specifies a driver output impedance of 50 ohms or less, rs232 does not seem to spec an output impedance at all and can be met with a fairly high value. Mar 30, 2006 i need to interface to mil std 188 114a which is electrically similar to rs232. When first developed military standard 188 milstd188 covered technical standards for tactical and longhaul communications, but as it was revised mil std 188a, mil std 188b it became a document applicable to tactical communications only mil std 188c 24 nov 1969. Protection against hemp and lightning overvoltage and electromagnetic interferences.
The purpose of this standard is to standardize on radio frequency connector. The handbook also includes planning, management, logistics, and data requirements for hemp protection acquisition programs and. Thus the insertion loss values are not reduced under all operating current. This standard contains two sections, the main body and an appendix. Classification of the ecu as mission critical equipment mce which must be located outside of an electromagnetic barrier hardening of the ecu using special protective measures as defined in mil std 188 125 2. The short e1 pulse acceptance pci testing of the ds33738275 was performed iaw milstd1881251 with separate 2.
Milstd 1881251 short and intermediate pulse test filter for assembly from outside to the shielded wall b84299 response current short pulse response current intermediate pulse. For shielded systems focus area the offeror shall propose structural materials for hemp shielding in accordance with the requirements referenced in mil std 188 125 or mil std 2169c. You can read the relevant mil stds if you have the patience. Special electrical poe protective device per mil std 188 125 1 features. Filters for power lines with hempprotection according to milstd 1881251. Nuclear survivability overview presented to chemical, biological, radiological and nuclear survivability conference 18 may 2011. Mil std 188 125 1 hemp hardening fixed facilities mil std 188 125 2 hemp hardening transportable systems mil std 202 environmental requirements component level. This standard establishes minimum requirements and design objectives for highaltitude electromagnetic pulse hemp hardening of transportable1 groundbased systems that perform critical. But the verification of large or fixed facilities can only be performed with a low level illumination field in the frequency domain. Recommended improvements for milstd1881251 abstract 2. Performance, acceptance test, and verification test requirements are contained in the body of the standard. This military standard is approved for use by all departments and agencies of thedepartment of defense dod. Electromagnetic pulse hemp protection for fixed and transportable.
Facilities include subscriber terminals and data processing centers, transmitting and receiving communications stations, and relay facilities. Milstd1881251 not 1 highaltitude electromagnetic pulse. Implementation of mil std 188 125 1 is supported by mil hdbk423, high. Mil std 188 125 1 2 appendix a and appendix b testing is conducted to assess the hemp performance of each door using a custom enclosure.
Mil std 188 125 1 and 2 are more recent specifications for defining requirements for hemp protection. The us mil std 188 110b has been revised to mil std 188 110c and includes appendix d defining a family of wideband hf data waveforms supporting bandwidths from. This military standard is approved and mandatory for use by all departments and agencies of defense dod in accordance. Continuous wave immersion test setup cwi mil std 188 125 cwi. The first standard issued was mil std 2169, the highaltitude electromagnetic pulse hemp threat environment to be used by all military services in developing survivable systems. Implementation of milstd1881251 is supported by milhdbk423, high. Mil std 188 141c wchange 1 27 december 2011 superseding mil std 188 141b 25 july 2011 department of defense interface standard interoperability and performance standards for medium and high frequency radio systems amsc na area tcss distribution statement a. D188124a 2 february 1984 l amsc nta area slhcitctsiemcs.
Nov 30, 2016 for shielded systems focus area the offeror shall propose structural materials for hemp shielding in accordance with the requirements referenced in mil std 188 125 or mil std 2169c. Mil std 188 185 interoperability standard for uhf misaltcom dama control system this standard establishes mandatory requirements applicable to the channel controller \cc\ to provide the capability for terminals to access preassigned \pa\ or demandassigned \da\ usertouser communications \ucom\ services that operate on either 5khz or. Mil std 188 125 2, highaltitude emp protection for transportable systems. Mil std 461 emi requirements subsystems mil std 464 emi requirements. Mil std 188 110b appendix f isb operation the rates specified in mil std 188 110b appendix f are for isb operation and require an isb capable radio. Sara offers three short pulse generators and two intermediate pulse generators which.
This standard is approved for use by all departments and agencies of the department of defense. Milstd188125 highaltitude electromagnetic pulse hemp. Hempunique acceptance and verification test techniques are provided in appendices a, b, and c. Altitude electromagnetic pulse hemp protection for fixed and. D 188 124a 2 february 1984 l amsc nta area slhcitctsiemcs. Strategic satcom harris designed and developed the. High altitude electromagnetic pulse hemp protection for. Filters for power lines with hempprotection according to milstd. The pulse generators are fieldproven, rugged units designed by engineers for realworld test environments with designs that have evolved from more than a decade of emp field tests. Milstd1881251, highaltitude emp protection for fixed. Classification of the ecu as mission critical equipment mce which must be located outside of an electromagnetic barrier hardening of the ecu using special protective measures as defined in milstd1881252. The may 1993 standard notes that the transport layer and session layer are null and only provide a passthrough service2. A portable milstd188125 e1 test system request pdf. Subsequently, mil stds 188 125 1, and 2 were issued for protection of fixed and transportable groundbased systems.
Mil std 188 125 1 2 pulser specification sheet december 2017 sara proprietary 3 spci1k the spci1k short circuit output current is a field ready verification test pulser with an output range of just a few. The unit tested met all applicable acceptance pci performance requirements given in mil std 188 125 1. Mil std 188 125 1 acceptance pci testing summary mpe ds33605c hemp filter 3x 32 a, 250 vac jaxon engineering and maintenance jem has performed mil std 188 125 1 acceptance pci testing on multiple production units of hemp ppd pointofentry protective device pn ds33605c manufactured by mpe of liverpool, uk. Milstd1881252 compliance years of supporting systems of systems sos when hemp and emi matter. The short e1 pulse acceptance pci testing of the ds33738275 was performed iaw mil std 188 125 1 with separate 2. Mil std 188 125 highaltitude electromagnetic pulse hemp protection for groundbased c4i facilities performing critical, timeurgent missions volume 1 fixed facilities superseded by mil std 188 125 1.
Electromagnetic mitigation ieee long island section. Military standard grounding, bonding and shielding for common long haultactical communication systems including ground based communicationselectronics facilities and equipments mil std ib8124b 1 feb 92 superseding mil s. Milstd1881251 highaltitude electromagnetic pulse hemp. Implementation of milstd1881251 is supported by milhdbk423, highaltitude. Milstd1881251 provides protection and test requirements to build a shielded building against the threat of highaltitude electromagnetic. This course meets the high altitude electromagnetic pulse hemp awareness training requirements of the following department of defense standards. Per mil std 188 125 1 1 and mil std 188 125 2 1 features met is comprised of five. Mil std 188 125 2 compliance years of supporting systems of systems sos when hemp and emi matter. This standard is approved for use by all departments and agencies of the department of defense dod.
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