A: Design temperature is the temperature that a system is designed to maintain inside or operate against outside under the most extreme conditions.

Impact Temperature defining it can be tricky. It is a phrase that can easily be misapplied in the testing industry because it can be used to represent different things, for different temperature related test results, that characterize the performance of an electrical or mechanical operating device when subjected to various temperature extremes. So, when you couple your question about impact temperature with how it differs from design temperature and given your company, I am guessing that you may want to apply this response to some type of alloy (i.e. steel, iron ore etc.). Thus, I believe the meaning/use you might be looking for with impact temperature is …The material/alloy temperature when spot welding took place and the weld separates after having some predetermined test weight impact the structure.

Q: I have been advising a friend of mine, involved in importing LED lighting products from China and Taiwan into Canada. I told him that such products must bear CSA or ULC labelling. He believes other agencies are acceptable. If he is correct, a MET label might suffice. Please give some advice that might help clarify this situation.
-Brian, Alberta, CN

A: If the product is mains-powered (i.e. plugs into 120 V receptacle) Canadian and Provincial laws require the equipment to be listed by an accredited CB (Certification Body). MET is an accredited CB to many product standards and in these cases our certification mark is valid in Canada.

Learn more about the history of product safety certification in this interview conducted with MET's Kevin Harbarger by TabletRoms during the 2012 CES show.

Q:What is the difference between Intentional and Unintentional Radiators.
-Sam, Los Angeles, CA

A: According to the FCC:

Intentional Radiators are devices that intentionally generate and emit RF energy, i.e., transmitters.
Examples of Part 15 intentional radiators include cordless telephones, remote control transmitters,
remote utility meter readers, and wireless local area networking equipment.
Part 15 intentional radiators must be certified by the FCC or a designated Telecommunication Certification Body
(TCB) before they can be imported into or marketed within the United States.

Unintentional Radiators are devices that intentionally generate, but do not intentionally emit, RF energy. Examples of Part 15 unintentional radiators include radio receivers, computers and TV interface devices such as DVD players, cable and satellite boxes. Most unintentional radiators can be authorized through a self-approval process in which the manufacturer has the equipment tested to ensure it complies with the Part 15 rules, but does not have to obtain certification through the FCC or a TCB. However, scanning receivers and radar detectors are required to be certified before they can be imported into or marketed within the United States.

• Streamlined Flash Testing of flat plate and thin film PV modules to IEC 61646, IEC 61215-2nd edition, and UL 1703.
• Facility dedicated to PV Flame Testing

• LTS system from Thermo Fisher
• Expanded Lightning Testing to RTCA DO-160
• 7 Test Waveforms (1, 2, 3, 4, 5A, 5B, 6)
• 5 Test Levels (1, 2, 3, 4, 5)
• 2 Test Types (Pin Injection, Cable Bundle)
• 3 Test Methods (Direct, Cable Induction, Ground Injection)
  (pictured below)

• Both Santa Clara and Union City have added walk-in temperature chambers
• Providing 20 KW power
• Instantaneous hot to cold temperature / shock testing
  (pictured below)

• MET Labs is actively participating in the US DoT's "Connected Vehicle" program as part of the OmniAir consortium. In 2012, MET will be conducting a wide range of tests, both in the lab and in the field.
• MET Labs is also active in the OCS (the OmniAir Certification Services), chartered to develop an interoperability program for toll agencies. The OCS plans to certify first vendors in early 2012.
• MET Labs has hosted the first WiGig Plugfest at our lab in Santa Clara. MET will be helping WiGig conduct other Plugfests in 2012 and will help develop their certification program.
• MET is actively engaged in the RFID medical community, testing and participating in standard development with the FDA and AIM for medical device susceptibility to RFID.

• Interior dimensions: 72” W X 72” D x 84” H
• Exterior dimensions: 132”W x 106”D x 108”H
• Temperature range: -67C to +177 C
• Humidity range: 20 to 95%   RH
• Altitude Range: 0 to 100,000 Feet (site level to 100,000 feet in 30 minutes)
• Altitude Control: Fully Programmable with Pressure Transducer Sensor for Profiling Control