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Test Definitions


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  (n) - Representing one thousandth of one millionth = 0.000000001 or 10 to the -9 power. See Nanosecond (nS) for an example.
Source: A.T.E. Solutions, Inc.
  (ns) - A billionth of a second. Many computer operations, such as the speed of memory chips, are measured in nanoseconds. Nanosecond is often abbreviated as ns.
Source: Xilinx
  the creation of useful, functional materials, devices, and systems through controlling and manipulating matter on the nanometer-length scale (1-100 nanometers), and exploiting novel phenomena and properties (physical, chemical, biological, mechanical, electrical) at that length scale. The prefix “nano” means a billionth - a nanosecond is one-billionth of a second, a nanometer is one billionth of a meter, and so on.
Source: NASA Tech Briefs
  Channels that provide data transfer rates of 100 kbit/second.
Source: Xilinx
Narrowband Emission
  An emission that has a spectral energy distribution that is narrow compared to a referenced bandwidth, such as that of the suseptible receptor or the measuring receiver. This is usually defined using the 3 dB bandwidths. The unit for narrowband signal measurements using EMI receivers is usually dBuV.
Source: eEngineer
National Institute of Standads and Technology
  (NIST) - A non-regulatory agency of the United States Department of Commerce, NIST supplies standard reference materials of the highest quality and metrological value.
Source: The Paramatric Measurement Handbook
N-channel MOS or P-channel MOS
  (NMOS or PMOS) - Refers to the order in which the semiconductor is doped in a MOS device. That is, which structures are constructed as N-type versus P-type material.
Source: Maxfield & Montrose Interactive Inc.
Negative Bias Temperature Instability
  (NTBI) - NBTI is a key reliability issue that is of immediate concern in CMOS devices enduring stress from negative-gate voltages. The driving current to a transistor becomes smaller, degrading or locking up the timing of the gate, potentially causing failures.
Source: EDN Magazine
Negative Failure Space
  A failure space that is comprised of a set of failure modes that represent the absence of specific functions.
Source: Testability.com
Negative Function Space
  A function space that is comprised of a set of functions that represent the absence of specific failure modes.
Source: Testability.com
Negative Ground
  A system where the negative terminal of the source is connected to the system's metal chassis.
Source: Twisted Pair
Negative Ion
  An atom or group of atoms with an extra electron.
Source: Maxfield & Montrose Interactive Inc.
Negative Logic
  A convention which dictates the relationship between logical values and the physical voltages used to represent them. The more negative potential is considered to represent TRUE and the more positive potential is considered to represent FALSE. Also known as negative true logic. For example, 5 volts in negative logic is the 0 or Low state, while 0 volts would be the 1 or High state.
Source: Maxfield & Montrose Interactive Inc.
Negative Resistance
  A resistance such that when the current through it increases the voltage drop across the resistance decreases.
Source: Twisted Pair
  Configuration of connected-through copper tracks/wires on a PCB. An implicit or explicit descriptor for a connection in a netlist.
Source: Hebrew University of Jerusalem "DFT & JTAG" Course
Net Extraction
  The identification and cataloging of all signal paths in a circuit. The combination of all nets and circuit elements (transistors, resistors, capacitors, ICs, etc.) of an electronic design completely describes an electronic circuit.
Source: EE Design
  List of parts and their connection points which are connected in each net of a circuit.
Source: PCB Universe
  A file that describes the logic and the connections of a circuit or a system.
Source: Xilinx
Network Analysis
  Measurement technique used to characterize the behavior of electrical networks with the aid of a generator and receiver. The most common measurands in RF engineering are the twoport network parameters, known as the S-parameters.
Source: Willtek Communications, Inc.
Network Layer
  The Network Layer controls the operation of the network or sub-network (or sub-net). It decides which physical pathway the data should take based on network conditions, priorities of service, and other factors. The Network Layer relieves the upper layers of the need to know anything about the data transmission and switching technologies used to connect systems. It is responsible for establishing, maintaining, and terminating connections across the intervening communications facility.
Source: Xilinx
Network Simulation
  Simulation of a communications network to determine if it has the desired communications capacity, noise insensitivity, and fault tolerance.
Source: EE Design

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