The U.S. Navy has granted a contract to embedded computing technology supplier Kontron America Inc. to provide 25 FS-1290 rugged VME chassis assemblies for embedded computing in AN/UPX-29A interrogator systems aboard the littoral combat ships USS Little Rock and USS Sioux City and the national security cutter USCGC Midgett. The AN/UPX-29(V) interrogator is “a centralized air … [Read more...]
U.S. Military Examines Possibility of Replacing RF Data Transmission with Laser Communication
The U.S. military has been examining the possibility of utilizing lasers instead of radio frequencies to transmit data—a technology known as “free-space optical communications”—for decades in an effort to combat the shrinking amount of radio spectrum available for military use. In recent years, the introduction of unmanned aerial vehicles has forced the military to lease time … [Read more...]
Tell Me Again Ron – What’s This About CM & DM Radiation?
Apparently, I didn’t throw enough words at the CM/DM problem in the last several posts so I’m going to add to it, but from a slightly different perspective. It’s either that or hide my email address. I’ll do DM this time, CM next time. We’ve been discussing loops all along. If there’s current, there is a loop somewhere. Finding it may be a … [Read more...]
Coupling/Decoupling Network for Telecom Surge Testing
Teseq Inc., a developer of EMC instrumentation and systems for a variety of industries, has released a new coupling/decoupling network (CDN) for surge testing on unshielded symmetrical high speed telecommunication lines. According the company, the CDN HSS-2 is ideal for use in laboratories and is compatible with all industry standard surge generators. The new CDN features a … [Read more...]
Power Amplifiers for Use in EMC Immunity Testing Applications
Test and measurement company Test Equipment Connection has announced the release of new Com-Power ACS-230-25W and ACS-230-50W power amplifiers for use in EMC immunity testing applications. Both models are part of Com-Power’s series of broadband RF amplifiers. According to the company, The ACS-230-50W model is equipped with a 47 dB gain, 50 Watt nominal power output while the … [Read more...]
波音公司将于2014年之前在飞机上安装无线连接系统
波音航空公司计划于2013年底之前在波音747-8和波音777 上安装能够提供飞行中手机使用、Wi-Fi连接、机内娱乐（IFE）互联网接入以及现场电视转播等服务的系统。 波音787目前经过改造的系统可为乘客在飞行中提供个人手机与Wi-Fi连接服务，该公司目前正在努力开发一整套无线连接产品，作为今年年底波音787的标准目录中的一部分。 无线流媒体也有望自2014年起在所有新的波音飞机上使用。 … [Read more...]
Florida Police Determine Cause of Keyless Entry System Interference
Police in Hollywood, Fla. have discovered the cause of a problem that left dozens of people unable to unlock or start cars equipped with keyless entry systems while parked near the Hollywood Police Department. The problem disappeared when the cars were towed to dealerships and was blamed on everything from dead batteries to a Hollywood Police Department antenna that was rumored … [Read more...]
Military GPS Accuracy Challenged by RFI
Military GPS-based positioning, navigation, and timing (PNT) has profoundly changed how the U.S. Defense Department carries out command and control in the electronic battle space; however, concerns have arisen recently about U.S. military dependence on GPS and the vulnerabilities that may affect mission success if GPS is not available — even if only for the briefest of periods. … [Read more...]
Electromagnetic Shielding Performance Tests for Cabinets and Subracks Housing Electronic Equipment
From the International Electrotechnical Commission webstore, "IEC 61587-3:2013 specifies the tests for empty cabinets and subracks concerning electromagnetic shielding performance in the frequency range of 30 MHz to 3,000 MHz. Stipulated attenuation values are chosen for the definition of the shielding performance level of cabinets and subracks for the IEC 60297 and IEC 60917 … [Read more...]
ESD Protection Diodes for High-Speed Data Lines
Electronics company Toshiba Corporation has released DF6D7M1N and DF10G7M1N, two new multi-bit compact ESD protection diodes for high-speed data lines as part of the company’s “extreme high speed” series. According to the company, the new products “realize multiple diodes while maintaining the signal quality achieved by the low-inductance flow-through layout.” According to … [Read more...]
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