Abstract: Apparatus and methods for measuring current flowing through a conductor include a device comprised of a magnetically conductive loop having a plurality of strands and a magnetic field sensor. Each strand has a magnetically conductive material. The strands are configured to pass a magnetic field to a first magnetic field sensor that is positioned adjacent to an end of the first plurality of strands. The plurality of strands may be arranged in various patterns that allow the magnetically conductive loop to be more bendable or flexible than a current-clamp device.

Abstract: A method and system for comparing measurements of a device under test (DUT) to measurements taken of similar equipment are provided. The method includes communicatively connecting a mobile computing device to one or more measurement devices, and receiving measurement data from the one or more measurement devices. The mobile computing device determines an equipment identifier of the DUT, and retrieves information associated with the equipment, which may include previous measurements of other devices or reference documents. The mobile computing device presents the retrieved information along with the received measurement data for comparison.

Abstract: An apparatus for determining optical fiber array polarity is disclosed. The apparatus may be used to determine optical signal loss or intensity. An adapter may be used to couple the apparatus to a variety of optical fiber connectors. The apparatus includes a position sensing detector and processing circuitry. The position sensing detector includes a sensor that receives optical signals and electrodes that output respective output signals in response to receipt of an optical signal. The processing circuitry receives the output signals and identifies locations at which the optical signals were incident on the sensor. The processing circuitry also determines the receiving position in the optical array of an optical fiber and a polarity of the optical array based on the receiving position and a corresponding transmitting position. The processing circuitry may determine an intensity or loss of the optical signal based on an aggregate of the output signals.

Abstract: In one aspect, a portable handheld measurement device automatically stores measurement values in volatile memory in a limited replay storage mode that comprises a storage limitation that applies to the plurality of measurement values stored in the limited replay storage mode; receives a replay request; and, responsive to the replay request, presents at least some of the measurement values stored in the limited replay storage mode. In another aspect, a portable handheld measurement device automatically stores measurement values and associated contextual data according to a persistent storage mode; and automatically stores the measurement values according to a limited replay storage mode, wherein the limited replay storage mode comprises a storage limitation that is not present in the persistent storage mode.

Abstract: A method for testing the operation of an optical fiber cable in a communication network using an optical loss test set (OLTS) instrument includes receiving a range of identifiers of fibers to be tested. Identifiers of a first fiber set to be tested are displayed. The first fiber set comprises one or more fibers. The first fiber pair is included in the range. The first fiber pair is a next fiber pair to be tested. A determination is made whether the first fiber set is connected to the OLTS instrument. In response to determining that the first fiber set is connected to the OLTS instrument, a test of the first fiber set operation is performed using the OLTS instrument. Identifiers of a second fiber set are displayed. The second fiber set is included in the range and constitutes a next fiber set to be tested.

Abstract: Aspects of the invention generally relate to illumination gas imaging and detection. Camera systems can illuminate a target scene with light sources configured to emit absorbing and non-absorbing wavelengths with respect to a target gas. An image of the target scene illuminated with a non-absorbing wavelength can be compared to a non-illuminated image of the target scene in order to determine information about the background of the target scene. If sufficient light of the non-absorbing wavelength is scattered by the scene toward a detector, the target scene comprises an adequate background for performing a gas imaging process. A camera system can alert a user of portions of the target scene suitable or unsuitable for performing a gas imaging process. If necessary, the user can reposition the system until sufficient portions of the target scene are recognized as suitable for performing the gas imaging process.

Abstract: Various embodiments of shutters for thermal imaging cameras, cameras comprising such shutters, and methods for providing such shutters are disclosed. The shutter may include a substrate with various layers and components thereon, such as a temperature sensor. The shutter may resemble a printed circuit board (PCB), utilizing efficient, cost-effective materials and methods known in the art.

Abstract: An infrared imaging probe that includes an elongated wand and an electrically isolating connection between the imaging components, located at the distal end of the wand, and the image processing components, located at the proximal end of the wand.

Abstract: This disclosure provides systems and methods for using an article in connection with an optical device. Some systems may include an article configured to receive the optical device into a main body of the article. The main body may also include an access opening configured to receive a hand of the user to allow the user to operate the optical device while the device is received within the main body. The main body may include an optical aperture to allow the optical device to capture one or more spectrums of light from within the main body. The main body may also include a viewing aperture to allow a user to view a display of the optical device from outside of the main body. Some systems include an alignment apparatus configured to maintain an orientation of the optical device within the main body such that the optical device remains in alignment with both the optical and viewing apertures.

Abstract: Thermal imaging devices, systems, and methods are provided with IR sensor amplification techniques that in some cases provide a gain transfer function having at least two different gain regions. One thermal imaging camera includes an IR camera module, processing circuitry, and an amplifier stage that comprises a continuous gain function including at least two gain regions having different gains. In some cases a thermal imager is provided with saturation circuitry configured to reduce the gain of the amplifier stage in order to provide one of at least two different gain regions within the continuous gain function. In some cases amplification techniques provide a continuous gain function that includes both linear and nonlinear gain regions. One or more gain regions may further be calibrated for measuring temperature.

Abstract: A method and apparatus qualifies a conductor for service and determines imbalance resistance of a conductor. The method and apparatus comprises feeding signals from a controller to termination ends of at least three wires of a conductor. In the controller a resistance difference is determined between first and second wires of the conductor using a measured resistance of one of the three conductor wires as a reference value. The conductor is qualified for services when the resistance difference between the first and second wires is below a threshold.

Abstract: A tester includes a main body and a removable probe. The main body includes a main body probe and a front panel including selectable options for selecting a tester function. The removable probe may be coupled to the main body via a cord. The removable probe is fixable to the main body via a latch assembly. The latch assembly includes a socket disposed on one of the removable probe or the main body and a mating protrusion disposed at the other of the removable probe or the main body.

Abstract: A rectangular storage container comprises four parts, two of which are releasably coupled to each other to respectively form a bottom section and a top section such that, when assembled together, the bottom section and top section can move telescopically with respect to each other in a first dimension, and the respective two parts that are attached to form the bottom section and top section can additionally move with respect to each another in a second dimension, to enable adjustment of the volume of the storage container in two dimensions.

Abstract: A self-contained calibration method for improving stability of an optical source in an optical network test instrument includes performing a temperature sweep test of the optical source. Optical output power of the optical source is periodically measured. A temperature correcting value is generated based on the measured optical output power. The optical output power of the optical source is adjusted by applying the temperature correcting value to obtain a substantially constant optical output power of the optical source.

Abstract: An enclosure for an optical launch fiber assembly is disclosed which includes a base portion defining an inner cavity and having an interior surface, an outer peripheral wall and an exterior surface, a stationary storage spool fixedly secured to the inner surface of the base portion within the inner cavity, the storage spool having an annular wall forming an inner peripheral channel for supporting a central length of unjacketed optical launch fiber and an outer peripheral channel for supporting two end lengths of jacketed optical launch fiber, and a cover portion having an outer peripheral wall hingedly connected to the outer peripheral wall of the base portion.