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Application Notes | Spectrum

These application notes give you a detailed view on different measurement setups including examples.

Using Probes and Sensors with Modular Digitizers

Probes convert signal levels, change impedance levels, or offer convenient connection methods. Sensors or transducers convert physical phenomena to electrical signals. Examples include current probes, accelerometers, and photomultipliers. Both types of input devices are supported by Spectrum digitizers.   Read More

Using Digitizers as Oscilloscopes

A digitizer along with appropriate software can work like an Oscilloscope. It acquires an electrical voltage waveform and displays it on a screen. The biggest difference is that an oscilloscope is generally a stand-alone instrument with a self-contained display. While a digitizer is a system component, that acquires and stores an electrical voltage waveform and, with auxiliary software, displays that data on a screen.   Read More

Using Spectrum Digitizers in Ultrasonic Applications

The use of Ultrasonic products is increasing as new techniques and improvements in instrument performance constantly expand the range of applications. Spectrum digitizers are ideal tools for making ultrasonic measurements and can play a key role required in the development, testing and operation of these products. Spectrum digitizers and arbitrary waveform generators offer a wide range of bandwidths, sampling rates, and dynamic range to match the broad spectrum of ultrasonic measurement needs.   Read More

RF Measurements Using a Modular Digitizer

Modern modular digitizers, like the Spectrum M4i series PCIe digitizers, offer greater bandwidth and higher resolution at any given bandwidth than ever before. Although they are in the class of general purpose measuring instruments they are capable of many RF and lower microwave frequency measurements. This article focuses on some examples of common RF measurements that can be performed with these modular digitizers.   Read More

Signal Processing for Digitizers

Modular digitizers allow accurate, high resolution data acquisition that can be quickly transferred to a host computer. Signal processing functions, applied in the digitizer or in the host computer, permit the enhancement of the acquired data or the extraction of extremely useful information from a simple measurement.   Read More

Mechanical Measurements Using Digitizers

Measurements on mechanical devices and systems using a modular digitizer requires the use of a variety of transducers or sensors in order to convert mechanical parameters such as force, acceleration, pressure, rotational speed, and their kindred into electrical signals you can measure. This article is a primer on making such measurements using a modular digitizer.   Read More

Power Measurements Using Modular Digitizers

Line power measurements are commonly required to evaluate the performance of devices or circuits. Modular digitizers can make these power measurements. Digitizers are voltage responding measurement instruments. They can also measure current using suitable current probes or current shunts.   Read More

Solving Data Transfer Bottlenecks on Digitizers

With most modern PC based digitizers and data acquisition systems a common problem is caused by the fact that the ADC technology usually runs in advance of PC bus technology. In high-speed and high-resolution digitizer products this causes a bottleneck effect where the ADC can digitize much more data than can be easily transferred to the PC environment.   Read More

Teaming AWG with Digitizer for Stimulus-Response Test

Self-excited electronics like power supplies, oscillators, transmitters, and signal generators can often be tested using a measuring instrument (digitizer, oscilloscope, spectrum analyzer, etc.) alone.  Externally excited electronic devices like amplifiers, filters, receivers, and digital interfaces require a signal source and a measuring instrument for testing.  Modular Arbitrary Waveform Generators (AWG’s) and modular digitizers are available with multiple source and measurement channels that can be configured in bandwidth, sample rate, and memory.   Read More