Testing method for subscriber line testing (TS, TL) in a program-controlled communications system or switching equipment (EWSD), whereby a first or a second test execution program module (CT, LT), a test address data program module (TA) and a test decision program module (UC) initiates and implements testing procedures. These are read out of a test data program module (CD) by version-associated query sequences in the sense of a decision tree (E) for the identification of test limit values. The t...

Hose samples are tested to determine their permeability to noxious odors when used to conduct sewage. A hose sample is preferably pre-treated with methyl alcohol for several days to accelerate the rate of failure. Then the open ends of the hose sample tubular body are sealed and the tubular body is covered with a flexible generally (although not necessarily completely) sulfur-containing gas-impervious material (such as nylon film) to define a gas volume between the exterior surface of the hose a...

Measurement of stress-strain relationships in thin films using substantially flat, parallel test surfaces with minimal width.

The sealing integrity and/or the proper filling of sealed packages is determined by conveying them continuously along a path and applying loads to them. The loads have package contacting surface portions that travel in the conveying direction, e.g., provided by driven belts or arrays of free-running rollers. Preferably each package is subject to a first load and to a second load greater than the first, and two values related to the effective package thickness under the loads are derived and comp...

A package is conveyed to a test station where a friction roller is pressed against the package and urged to rotate relative to the package. The amount of rotation urgeable for a preset torque is indicative of package seal quality. This rotation is automatically detected and compared with a preset value to determine the quality of the package seal.

An apparatus for testing hearing comprises a sound source for applying a sound to the subject's ear and a sound detector for detecting the sound returned from the subject's inner ear in response to the sound. The sound source, which is driven by stimulus generation equipment connected to an analyzer, produces a sequence of sounds constituting a maximum length sequence to record Evoked Otacoustic Emissions.

The present invention provides a method and system for testing the adhesive strength of a bond between a coating or other material, or an adhesive tape, and an underlying surface or substrate to which it is bonded. The test may be performed at room temperature or in an environmental chamber at extreme conditions. In one embodiment an aperture is formed through the substrate and adhesive tape or a coating of paint is applied to the surface surrounding the aperture. A membrane, which approximately...

A test sample of raw or compounded rubber is squeezed from a loading chamber (7) through selectively-aligned passages (8,12) to fill an annular space (1) between a coaxial stator (5) and rotor (4). Measurements of viscous torque are provided by a sensor (15), and a load cell (14) provides measurements of the force exerted axially by the sample. The torque and axial-force measurements are plotted against time (16 FIG. 4, 17 FIG. 5) as representative respectively of the viscosity V and elasticity ...

The invention relates to a method and an arrangement implementing the method for testing a transmitter part and receiver part in a transceiver. A signal in the transmitter part is mixed with a mixing signal for generating a signal to be connected to the receiver part, which generated signal is connected to the receiver part and the connected signal is compared with the transmitter part signal to test the transceiver. The mixing signal is generated by connecting a signal generated by means of a s...

The present invention, in various embodiments, provides techniques for testing devices. In one embodiment, the device under test is a chip including a plurality of processors and a memory structure that stores test programs. One or more processors executes the test programs and generates test results based on which the chip may be determined good or bad. In one embodiment, the processors execute the test programs independent of each other, and no external hardware and/or test controller is requi...