RelQual Associates of Northern California helps companies market better-qualified products through stress-testing(HASS), software engineering, design-for-reliability(DFR) and related technical services. Reliability and Product Qualification Engineering Services
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Telecom network standards published by Telcordia.
Note: Bellcore was purchased by SAIC in 1997. The purchase agreement required Bellcore to change its name: Bellcore became Telcordia Technologies in 1999. BELLCORE (Bell Communications Research, a spin-off of AT&T Bell Labs) was the research arm of the Bell Operating Companies.


CCC (China Compulsory Certification)
CCC is required for a wide range of manufactured products before being exported to or sold in the Peoples Republic of China.
"Conformité Européene" or "European Conformity". previously "EC Mark" now "CE Marking" in the Directive 93/68/EEC.
(French) International Special Committee on Radio Interference
CPI (Continuous Process Improvement)
Emphasis on creating repeatable, measurable processes that can be used to provide the desired product or service. Although quality must still be verified, the logic is that if one can control (and measure) repeatable processes, then one will insure that quality is built into the product/service.
CSA (Canadian Standards Association)


DFM (Design-For-Manufacturability)
DFR (Design-For-Reliability)
DFT (Design-For-Testability)
DL (Destruct Limit)
DUT (Device Under Test)
One of the many acronyms used to describe the 'thing' being tested.
DVT (Design Verification Test)


EMC (Electromagnetic Compatibility)
EMI (Electromagnetic Interference)
ESD (ElectroStatic Discharge)
The age of electronics brought with it new problems associated with static electricity and electrostatic discharge. As electronic devices became faster and smaller, their sensitivity to ESD increased. Today, ESD impacts productivity and product reliability in virtually every aspect of today's electronics environment.
ESS (Environmental Stress Screening)
EUT (Equipment Under Test)
One of the many acronyms used to describe the 'thing' being tested.


FA (Failure Analysis)
FCC (Federal Communications Commission)
The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions.
FEA (Finite Element Analysis)
Finite element analysis is a numerical technique by which the solution of a set of differential equations may be performed. The finite element method is probably the most widely used form of computer-based engineering analysis. Most engineers, from all disciplines, will touch on the method at some point in their careers. The method can be used for analysis of a broad range of engineering problems.
FMEA (Failure Modes and Effects Analysis)




HALT ( Highly Accelerated Life Testing )
A process that subjects a given product to very extreme environmental conditions in order to discover the operational design limits of the product.
HASS ( Highly Accelerated Stress Screening )
A process that subjects a given product to extreme environmental conditions in order to discover latent defects during manufacturing.


IEC (International Electrotechnical Commission)
IR (Infrared)
Electromagnetic waves in the frequency range just below visible light corresponding to radiated heat.
ISO (International Standards Organization)






LCCS (Life Cycle Cost Savings)
LDL (Lower Destruct Limit)
LOL (Lower Operating Limit)


MIL-HDBK (Military Handbook)
Search for MIL-HDBK specs/docs Use this link to find specific documents by entering the document id (i.e. MIL-HDBK-217)
MIL-STD (Military Standard)
Search for MIL-STD specs/docs Use this link to find specific documents by entering the document id (i.e. MIL-STD-109)
MMW (Millimeter Wave)
MR (Manpower Requirement)


NEBS (Network Equipment-Building System)
Even more stringent than the FCC Part 15 requirements, NEBS covers a large range of requirements including criteria for personnel safety, protection of property, and operational continuity. The Bellcore documents cover both physical requirements including: Space Planning, Temperature, Humidity, Fire, Earthquake, Vibration, Transportation, Acoustical, Air Quality and Illumination; and electrical criteria including: Electrostatic Discharge (ESD), Electromagnetic Interference (EMI), Lightning and AC Power Fault, Steady State Power Induction, Corrosion,, DC Potential Difference, Electrical Safety and Bonding and Grounding.
NEC (National Electrical Code)
NTF (No Trouble Found)
A common answer when a particular problem/defect couldn't be duplicated or found.


OATS (Open Air Test Site)
OL (Operating Limit)


PCBA (Printed Circuit Board Assembly)
PEST (Production Environmental Stress Test)
PIND (Particle Impact Noise Detection)
Particle Impact Noise Detection. A test performed by vibrating a device on a shock table with an acoustical sensor for the purpose of detecting loose particles within the device cavity.
PWB (Printed Wiring Board)


QA (Quality Assurance)
A planned and systematic pattern of all actions necessary to provide adequate confidence that the product optimally fulfils customers' expectations, i.e. that it is problem-free and well able to perform the task it was designed for.


RF (Radio Frequency)
RGA (Residual Gas Analysis)
RH (Relative Humidity)
ROC (Rate of Change)
ROI (Return On Investment)
RTCA (Radio Technical Commission for Aeronautics)


SAM (Scanning Acoustical Microscopy)
SCM (Software Configuration Management)
A set of activities that are designed to control change by identifying the work products that are likely to change, establishing relationships among them, defining mechanisms for managing different versions of these work products, controlling changes that are imposed, and auditing and reporting on the changes that are made.
SEM (Scanning Electron Microscope)
SIMS (Secondary Ion Mass Spectrometry)
Step Stress
Gradually increasing known levels of stress, with measurements at each step.


TLL (Test Line Limit)
TQM (Total Quality Management)
A term initially coined by the Naval Air Systems Command to describe its Japanese style management approach to quality improvement. Since then, TQM has taken on many meanings. Simply put, it is a management approach to long-term success through customer satisfaction. TQM is based on the participation of all members of an organization in improving processes, products, services and the culture in which they work.
Globally, TÜV has issued over 24,000 product and 12,000 quality management system certifications.


UDL (Upper Destruct Limit)
UL (Underwriters Laboratories)
Underwriters Laboratories Inc. (UL) is an independent, not-for-profit product safety testing and certification organization.
UOL (Upper Operating Limit)
UUT (Unit Under Test)
One of the many acronyms used to describe the 'thing' being tested.


(German) Verband der Elektrotechnik (Electrotechnical Organization)








Page Revision:  May 22, 2004
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