Touchscreens Simplify Oscilloscopes to 1 GHz

Jan. 16, 2015
These “general-purpose” DSOs and MSOs offer as many as four analog input channels and 16 digital input channels with touchscreens, zone triggering, and 3-dB bandwidths to 1 GHz.
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Mainstream measurements seem to grow in complexity, as evidenced by more and more functions being packed into electronic products. As a result, workhorse instruments such as oscilloscopes must do more across their measurement ranges. Thus, the challenge for instrument developers is to provide the enhanced capability without overwhelming the user with added complexity.

1. The InfiniiVision 3000T X-Series oscilloscopes are available as DSOs and MSOs with two or four analog input channels at bandwidths to 1 GHz.

The answer, courtesy of Keysight Technologies, is the is the InfiniiVision 3000T X-Series of portable digital storage oscilloscopes (DSOs) and mixed-signal oscilloscopes (MSOs). Available with upgradable 3-dB measurement bandwidths from 100 MHz to 1 GHz, these instruments provide a capacitive touchscreen for ease of use, coupled with advanced zone triggering to capture the most elusive of problem signals.

The InfiniiVision 3000T X-Series of portable oscilloscopes (Fig. 1) are versatile instruments suitable for research, education, and general-purpose testing. They are available in DSO models with two or four analog input channels and MSO models with two or four analog channels (each with 16 digital channels). As examples, Model DSOX 3102T is a DSO with two input channels and a 3-dB measurement bandwidth of 1 GHz; the model DSOX 3104T provides the same measurement bandwidth with four analog input channels. Model MSOX 3102T is an MSO with a 3-dB measurement bandwidth of 1 GHz across two analog input channels and 16 digital input channels, while model MSO3104T is an MSO with the 1-GHz bandwidth, four analog input channels, and 16 digital input channels.

For those in need of less test bandwidth, the model DSOX 3012T DSO offers a 100-MHz 3-dB measurement bandwidth for two analog input channels, while the model DSOX 3014T DSO features the same bandwidth for four analog input channels. For those requiring the digital input channels as well, the models MSOX 3012T and MSOX 3014T MSOs each provide 16 digital input channels with two and four analog input channels, respectively (both with 100-MHz 3-dB measurement bandwidths). Models in between the extremes of the measurement range include DSOs and MSOs with 3-dB bandwidths of 200, 350, and 500 MHz.  

Each of the oscilloscopes incorporates 4Mpoints of memory. The normal (default) waveform update rate of the InfiniiVision 3000T X-Series instruments is better than 1 million/s; it does not require any special setup requirements. The powerful signal-processing circuitry within these scopes captures signals at sampling rates to 5.0 GSamples/s when applied to one-half the measurement channels and 2.5 GSamples/s when applied to all the measurement channels.

Not to be overshadowed by all this measurement power is the ease of use of these machines, aided by an 8.5-in. capacitive touchscreen (Fig. 2). The touchscreen interface is designed to simplify setting up measurements and boost measurement productivity; it also helps with collecting documentation for different test projects. Combined with the built-in zone triggering, the touchscreen allows operators to draw a shape around an area of interest on a test curve to greatly simplify the triggering process for different events and parts of a waveform.

2. Operation of the new oscilloscopes is simplified by an 8.5-in. capacitive touchscreen and zone touch triggering.

Traditional scopes can miss capturing different types of signals, depending upon the type of trigger required. A fast-rise-time event, for example, may be missed by setting triggers for a rise/fall-time setting of 20%/80% rather than a 10%/90% rise/fall-time setting. With these instruments, setting the triggering can be as simple as drawing a box on the scope display screen around the event of interest.

The InfiniiVision 3000T X-Series instruments are actually much more than just oscilloscopes, with a total of six instrument functions packed into the portable housing: oscilloscope, logic analyzer, protocol analyzer, 20-MHz arbitrary waveform generator (AWG), 3-digit digital voltmeter (DVM), and 8-digit time/frequency counter. The functions enabled by these additional instruments [such as gated Fast Fourier Transform (FFT) analysis] provide added insight into captured signal waveforms, for example, allowing simultaneous and time-correlated displays of time-domain and frequency-domain information on the single screen. 

The InfiniiVision 3000T X-Series oscilloscopes are designed around a standard three-year calibration cycle, and a standard 500-MHz passive probe is included with all models. The oscilloscopes can be ordered with a variety of software application options, including for mask limit testing; power analysis, enhanced video and television-broadcast testing; and various serial protocols for aerospace and defense, automotive, consumer electronics, and additional applications.

The scopes are available with support for the N7020A power rail for power integrity measurements, with large offset range of ±24 VDC and large active signal range of ±850 mV. And, of course, these new oscilloscopes can be used with the firm’s free BenchVue test and measurement software.

Keysight Technologies, Inc., 1400 Fountaingrove Pkwy., Santa Rosa, CA 95403; (707) 577-2663

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About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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