In connecting computers to one another or to peripherals, the network switch has largely replaced the Ethernet hub, although the latter will still perform its intended functions. The difference is that the less advanced hub sends identical data between ports whereas the network switch (also known as a switching hub, bridging hub or MAC bridge) […]
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Basics of optical fiber
Light is a form of electromagnetic radiation and as such it can be conveyed through a waveguide. The cross-sectional size of any waveguide depends on the wavelength of the energy that it will carry. Because light is at the high-frequency end of the spectrum, the waveguide through which it travels is slender although it may […]
Basics of understanding gain
Gain as a parameter is frequently used with reference to an amplifier, although other contexts are possible. It is the ratio of output amplitude or power of the output to the same value at the input. So that the number does not become unwieldy, a logarithmic decibel scale is ordinarily used. For an audio amplifier, […]
Determining the speed of light
Ancient people had a clear understanding of sound – how a vibrating object causes oscillating changes in air pressure, which move the eardrum so as to give rise to human perception of sound. In regard to light, there was less agreement. The pre-Socratic philosopher Empedocles believed light required a definite amount of time to travel […]
Lab power supplies hit 100 V, 5-A outputs
SANTA ROSA, Calif., Sept. 1, 2015 – Keysight Technologies, Inc. (NYSE: KEYS) today introduced a series of compact DC power supplies that offer LAN and USB interfaces and accurate, reliable power for testing and validating designs. The E36100 Series adds five new models with up to 100 V or 5 A output to Keysight’s extensive […]
First 50-GHz handheld combination analyzer
SANTA ROSA, Calif., Sept. 1, 2015 – Keysight Technologies, Inc. (NYSE: KEYS) today added six millimeter-wave models to its family of FieldFox handheld analyzers. The flagship model is the industry’s first handheld combination analyzer to provide coverage to 50 GHz. With more built-in capabilities than similar analyzers, FieldFox can replace three or four single-function instruments […]
Keyence to release next-generation coordinate measuring machine
KEYENCE will release the XM Series handheld probe coordinate measuring machine on September 1st, 2015. Conventional coordinate measuring machines require difficult installation, a controlled environment, and dedicated programmers. The XM Series is easily installed in any environment and allows any operator to perform intuitive 3D measurements with high accuracy. To overcome various challenges with conventional […]
Logic analyzer software does compliance violation tests across DDR4, LPDDR4 speed changes
SANTA ROSA, Calif., Aug. 18, 2015 – Keysight Technologies, Inc. (NYSE: KEYS) today announced a new software package for use with Keysight logic analyzers, the B4661A memory analysis software. The Keysight B4661A memory analysis software offers the industry’s only functional-level compliance violation testing capability across DDR4 and LPDDR4 speed changes. The new B4661A memory analysis […]
New signal generators hold the line on price, boost performance
Tektronix, Inc., a provider of test, measurement and monitoring instrumentation, has expanded its AFG3000C Arbitrary/Function Generator Series with two 150 MHz models (one or two channels) that deliver more performance than competitive offerings while holding the line on pricing. Slotting between existing 100 MHz and 240 MHz models in the Tektronix AFG3000C lineup, the new […]
DAS optimized for crash tests and blast measurements
Seal Beach, CA – As the need for higher fidelity data proves especially critical for occupant safety studies, as well as evolving OEM and aftermarket acoustic, structural and airbag pressure testing – SLICE PRO from DTS is on a fast track to becoming the new DAS of choice for both small scale tests and large […]