Electronic noise and jitter are closely related phenomena, but they are not the same. While noise typically manifests as amplitude distortion, jitter pertains to timing of digital signals. Either of them can be caused by outside interference or internal sources. Noise can be seen in an oscilloscope time domain display as a noticeable thickening of […]
Test and Measurement Tips
PC-based automotive scope adds EV test diagnostics
The new PicoScope 4425A EV Oscilloscope Kit is designed to provide a comprehensive diagnostics capability for all types of vehicles with electric (BEV, MHEV, PHEV, Fuel-cell) and internal combustion (diesel, gasoline, LPG) powertrains. It provides service shops with a futureproof system for analyzing vehicles with high-voltage batteries and electric motor systems. In combination with the […]
Isolated scope probes feature high bandwidth, dynamic range, CMRR
The second-generation IsoVu Isolated Oscilloscope Probes, called the TIVP Series, extend the applications for isolated probe technology to the entire power system design market with a smaller size, improved ease of use, and enhanced electrical performance. Making accurate measurements on high-speed ungrounded systems can be nearly impossible using traditional differential probes. Engineers working with wide-bandgap […]
Bi-phase modulators encode RF carriers via 2PSK
A new line of bi-phase modulators covere broad octave frequency bands from 0.5 to 40 GHz. These models use TTL logic to phase-modulate data onto an RF carrier signal using two-phase shift keying (2PSK). Useful applications include military and commercial communications systems, microwave radio, radar, high-data-rate test & measurement, serial data transmission and wireless base […]
Common-mode differential probes excel at 48-V GaN power conversion work
New DL-HCM probes from Teledyne LeCroy target 48-V GaN Power Conversion. They are available in 500 MHz and 1 GHz bandwidth and feature 60 V of common-mode and 80 V differential input range. The 60 V of common mode is well suited for handling any float of the battery and bulk/absorption voltage during charging, while […]
New book covers EMC troubleshooting with test instruments
A valuable 180-page book called “Create Your Own EMC Troubleshooting Kit: Essential Tools for EMC Troubleshooting” by EMC guru Ken Wyatt is the first volume in Wyatt’s EMC troubleshooting series. It covers the benefits of creating a personal EMC troubleshooting kit and also defines which products to include. Individual chapters name suitable spectrum analyzers, near-field […]
PXI switching modules handle heavy ac and dc loads
A new high-power relay PXI module provides the industry’s highest switching capacity in the smallest footprint for a solution based on electromechanical relays. Occupying a compact single PXI slot form factor, the model 40-166 is available with SPST, SPDT or SP4T switching configurations. It uses power relays suitable for switching loads up to 20 A […]
Basics of spectrometers and spectroscopy
The spectroscope is an instrument that separates white or near-white light into constituent colored bands as in a rainbow. The spectra can be projected onto a screen, viewed through a lens assembly, or photographed. The most elementary spectroscopes consisted of a single prism as used by Isaac Newton, described in an early treatise. He caused […]
Ultra-high stability/high-precision features for programmable 1.5 kW-3,000 kW+ dc supplies
The DBx Module for MagnaDC programmable dc power supplies bring ultra-high performance to nearly all models and product series, from 1.5 kW to 3,000 kW. The DBx Module, combined with MagnaDC power supplies, delivers ultra-high stability, low ripple, high precision, and high accuracy, with voltage, current, and power control modes. Systems utilizing the DBx Module […]
Rugged ATR chassis for VITA 48.4 features liquid flow-through cooling
A new rugged ATR chassis compliant with VITA 48.4 for liquid flow-through (LFT) cooling includes a new backplane designed for data rates up to 10 Gbps and can handle 300 W per slot. This enables the system to accommodate the intense thermal management needed in high-density embedded computing systems. The new chassis offers several other […]