Abstract: Aspects of the disclosure are directed toward systems and methods for combining aspects of a plurality of indexed images taken at different focus distances in order to generate a final image having objects at a variety of depths remain in focus. High frequency frames associated with each of the plurality of images can be generated, each high frequency frame being representative of the high frequency content of the associated image. The high frequency content in a plurality of regions in each of the plurality of high frequency frames can be analyzed to determine which regions include valid high frequency content. A final image can be generated comprising, for each of the plurality of regions, image data from the image having like index as the high frequency frame having the greatest valid high frequency content in that region.

Abstract: Infrared cameras can include an infrared sensor and an infrared lens assembly defining an optical axis. A camera can include an inner gear engaging the infrared lens assembly and a focus ring that engages the inner gear. The inner gear can engage the focus ring and the infrared lens assembly such that rotation of the focus ring about its central axis can cause the rotation of the infrared lens assembly about its optical axis, which may be offset from the central axis of the focus ring. The camera can include a sensor can threadably engaging the infrared lens assembly and fixed relative to the infrared sensor such that rotation of the infrared lens assembly causes the infrared lens assembly to move relative to the infrared sensor. The sensor can support other components such as a visible light lens assembly or a laser within a perimeter of the focus ring.

Abstract: A gas detector includes environmental condition detection circuitry that includes one or more sensors, data processing circuitry, and wireless communication circuitry. The gas detector is configured to be carried by a user. The environmental condition detection circuitry detects the presence or lack of presence of a particular gas in a vicinity of the gas detector and further detects a temperature in the vicinity of the gas detector and communicates detection data to the data processing circuitry. In response to detection of a hazardous temperature condition, the data processing circuitry of the gas detector provides an alert notification to the user carrying the gas detector. Also disclosed is an alert system including multiple gas detectors in which a first gas detector communicates an alert to a second gas detector via wireless communication, and in response, the second gas detector transmits the alert to another gas detector or device via wireless communication.

Abstract: This application discloses a network monitoring method and apparatus. The network monitoring method includes: receiving a packet transmitted on a network, where the packet has flow information that indicates a network flow for transmission of the packet; acquiring the flow information of the packet; detecting whether a metadatabase includes the flow information corresponding the packet, where the metadatabase is used to store metadata and flow information associated with the metadata; generating, according to a detection result about the flow information, metadata related to the transmission of the packet, and associating the metadata with the corresponding flow information; and storing the generated metadata and the flow information associated with the generated metadata into the metadatabase.

Abstract: A test lead assembly includes a first test lead having a first cable extending between a distal end and a proximal end, a first test probe attached to the distal end and a first plug attached to the proximal end; a second test lead having a second cable extending between a distal end and a proximal end, a second test probe attached to the distal end, and a second plug attached to the proximal end; and a fastener member for repeatedly releasably engaging at least a portion of the first cable with at least a portion of the second cable along a length of the first and second cables. The test lead assembly and a measurement device incorporating the test lead assembly can avoid or at least reduce knotting of the test leads.

Abstract: An alert system and method includes at least first and second detectors that each includes environmental condition detection circuitry, data processing circuitry, and wireless communication circuitry. The first and second detectors are respectively carried by first and second users. The first and second detectors detect environmental conditions in a vicinity of the respective detectors and communicate detection data to the respective data processing circuitry. In response to detection of a hazardous environmental condition by the first detector, the first detector provides an alert notification to the first user and communicates the alert to the second detector via wireless communication, and in response to receipt of an alert from the first detector, the second detector transmits the alert to another detector or device via wireless communication. A communicated or transmitted alert may include an incrementing indicator of a number of hops or levels of transmission of the alert.

Abstract: An add-on lens assembly supporting an add-on lens for a camera includes a locking mechanism actuatable by the user in order to increase the attachment force between the lens and the camera. The add-on lens assembly may include a rotatable lock ring having a cam pin that navigates along a surface of a cam such that when the lock ring is rotated, the cam pin causes the cam to translate axially. Axial translation of the cam may compress a spring within the assembly and increase the attachment force between the lens assembly and the camera. The increased force between the add-on lens assembly and the camera may provide additional support for large or heavy assemblies.

Abstract: A thermal imaging system having visible light and infrared camera modules can perform various methods for reducing parallax errors between captured visible light and infrared images. The system can perform a first calibration method, which can be manual or automatic, and can receive subsequent parallax refinement adjustments via a user interface. The parallax refinement adjustments may be stored in memory for future use. Systems can include an add-on lens capable of interfacing with the infrared camera module for producing modified infrared images. The system can perform methods to reduce parallax between modified infrared and visible light images, and can receive subsequent parallax refinement adjustments to further reduce parallax between the modified infrared and visible light images. The add-on lens parallax refinement data can be stored in memory of the camera memory of the lens for future use in parallax correction.

Abstract: An optically-addressable optical switch is disclosed. The optically-addressable optical switch receives, using an optical input, a first optical signal or portion of an optical signal and determines, based on the received optical signal, an address of an optical connector. The address is one of a plurality of addresses respectively corresponding to a plurality of optical connections of the optical switch. The optical switch subsequently receives a second optical signal or portion of an optical signal, using the same optical input, and outputs the second optical signal or portion of the optical signal to the optical connection corresponding to the determined address.

Abstract: One or more embodiments are directed to optical test instruments, such as fiber optic inspection scopes and optical power meters, for testing optical communication links, such as fiber optic connectors. The optical test instruments include a single test port that is able to operate in two modes of operation. In a first mode of operation, the optical test instrument is configured to provide an image of the endface of a fiber optic connector under test. In a second mode of operation, the optical test instrument is configured to measure power or power loss in an optical fiber under test. In that regard, the fiber optic connector only has to be coupled to a single port of an optical test instrument for a visual inspection of an endface of a fiber optic connector and a power test of the optical fiber under test.

Abstract: The invention relates generally to edge detection and presentation in thermal images. Infrared and visible light images comprising at least partially overlapping target scenes are analyzed. An edge detection process is performed on the visible light image to determine which pixels represent edges in the target scene. A display image is generated in which some pixels include infrared image data and in which pixels corresponding to edges in the visible light image include a predetermined color and do not include corresponding infrared image data to emphasize edges. Edge pixels in the display image can include exclusively the predetermined color, or in some examples, a blend of a predetermined color and visible light image data. Methods can include replacing one or the other of visible light edge pixels or corresponding infrared pixels with the predetermined color before combining the visible light and infrared image data to create a display image.

Abstract: A resistor support assembly includes first, second, third, and fourth support members. Each of the first and second support members includes one or more resistor contact regions and apertures extending therethrough. Each third support member is at least partially disposed within one of the apertures of one of the first support members and one of the apertures of one of the second support members. Recesses may be formed in the resistor contact regions of the first and the second support members, and one or more load resistors may be at least partially disposed within the recesses. The resistor support assembly may be used to mount one or more load resistors to a printed circuit board, without obstructing airflow through hollow portions of the load resistors. To reduce parasitic capacitance and inductance, the first support members and the second support members are formed from non-conductive materials.

Abstract: A testing device measures a characteristic of an electrical conductor. The testing device includes a substrate having at least one flexible portion, at least one sensor located on the substrate, and a holding mechanism. The at least one sensor is configured to generate a signal indicative of the characteristic of the electrical conductor. The holding mechanism is configured to hold the testing device to an outer portion of the electrical conductor such that the at least one sensor is held in a position with respect to the electrical conductor.

Abstract: A system for providing data communication includes a computer test tool configured to perform one or more diagnostic tests on a computer network and a cloud-based server. The cloud-based server is configured to couple to the communication network so as to exchange data with the computer test tool when the computer test tool is coupled to the communication network. The cloud-based server tracks usage of the computer test tool and, based on the tracked usage, transmits a message to the computer test tool that temporarily enables the computer test tool based on a predetermined condition.

Abstract: Systems and methods of providing a magnetically coupled ground reference probe for use with test equipment, such as digital multimeters (DMMs). The magnetically coupled ground reference probes disclosed herein may be used instead of a typical test probe or alligator clip. A magnetically coupled ground reference probe may be provided which includes an insulative housing surrounding a conductive magnet such as a permanent magnet or an electromagnet. The magnet may autonomously retract into a cavity of the insulative housing when not coupled to a ground reference so that the magnet does not contact a high potential source when being handled by the operator. In at least some implementations, at least a portion of the insulation material of the housing may be compressible to allow the magnet to come into physical contact with a ground reference surface while providing a sufficient creepage and clearance path.