For years, ohmmeters have been integrated into the electrician’s multimeter. This is convenient, because ohms and volt are the most-performed measurements. Also, only a single instrument must be purchased and maintained. Multimeters are further subdivided into ac, bench-type multimeters and hand-held, battery-powered multimeters. The hand-held instruments are more convenient. Most often just grab your handheld […]
Test and Measurement Tips
What’s all this Helmholtz coil stuff?
The Helmholtz coil was not devised to create a magnetic field, but to cancel it. The Helmholtz coil actually consists of two identical circular air-core coils, large enough to contain the work under study. The coils are situated along a common axis that extends through the experimental area. The distance between the coils is equal […]
Protocol test system handles USB Power Delivery, USB Type-C, USB 3.2 link layer compliance testing
The Voyager M4x Analyzer/Exerciser system has been approved by the USB Implementer’s Forum (USB-IF) for USB Power Delivery (USB PD), USB Type-C Functional and USB 3.2 Link Layer compliance testing. The Voyager M4x also supports USB4 logical and protocol layer compliance allowing this single test platform to address the most critical technologies within the USB […]
Sorting out balanced cables and differential signaling
Lines carrying symmetric signals, i.e. those with opposite polarities but with equal amplitudes on each line are commonly called balanced. But the correct term is differential signaling. While balanced lines and differential signaling may be used together, they are actually quite different. The key point that distinguished balanced lines from single-ended lines is that both […]
Intrinsically safe meters simplify mechanical, electrical bond testing
The TEGAM 700 series of bond meters now include two handheld measurement tools. The TEGAM 720A and TEGAM 730A bond meters are suitable for use in the manufacture and maintenance of automotive, aerospace, renewable energy equipment and other applications in which testing of the integrity of mechanical and electrical bonds is a critical requirement. The […]
Ultra-wideband, omnidirectional antennas optimized for radial isotropic measurements from 150 MHz to 18 GHz
Aaronia OmniLOG PRO Omnidirectional Antennas are compact, ultra-wideband omnidirectional antennas suited for radial isotropic use from 150 MHz up to 18 GHz, encompassing most RF sources such as LTE, GSM, UMTS, WLAN, etc. These cost-effective antennas are specified for 1 W cw receive and 100 W cw high-power transmit, making them candidates for broad-range spectrum […]
BNC interface lets piezoelectric sensors hook up to data acquisition gear
A new interface allows the use of IEPE sensors on all data acquisition devices with a 1-MΩ BNC interface. The TA487 IEPE Signal Conditioner is a simple adaptor that allows any PicoScope or oscilloscope to capture and measure signals from a large selection of piezo-electric IEPE sensors, such as the Pico Technology TA095 accelerometer. Integrated […]
Analyzing jitter with an oscilloscope
Jitter–basically the deviation between true and measured periodicity–is harmful beyond a certain level. In measuring jitter, we are calculating RMS, peak-to-peak deviation or spectral density. Jitter at frequencies below 10 Hz is known as wander. High-frequency signals are more prone to jitter than low-frequency signals. The deviation in periodicity that constitutes jitter may be in […]
Power choke testers measure up To 4 kA/7.7 kJ
The ed-k DPG Power Choke Tester family is a unique series of innovative measurement instruments for inductive power components, using currents up to 4 kA and pulse energy up to 7.7 kJ. The DPG series uses a large-signal impulse measuring method to provide a complete inductance curve as a function of the current L(i), or […]
Scope features automotive diagnostic presets package, 32 Mpt memory, 1 GSa/sec sampling
The Micsig SATO1004 Automotive Tablet Oscilloscope features four channels, a bandwidth of 100 MHz, an easy-use touchscreen operation and a comprehensive set of vehicle diagnostics. With its signal sample rate of 1 GSa/sec, the SATO1004 is a powerful, professional, and affordable vehicle testing tool for evaluating systems such as: ABS, Accelerator Pedal, Throttle Position, Fuel […]
