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HD Oscilloscopes armed with true 12bit ADC

Posted: 24 Oct 2012 ?? ?Print Version ?Bookmark and Share

Keywords:HD4096? high definition? oscilloscopes? 12bit ADC?

Teledyne LeCroy has recently released its first series of instruments which operate with the HD4096 high definition technology. The HDO4000 and HDO6000 high definition oscilloscopes are able to detect 4096 levels of quantisation thanks to a 12bit ADC.

The instruments are designed with a new SiGe front-end and a new hardware platform to improve noise ratio. This allows the devices to acquire waveforms that are cleaner and crisper with 16 times more vertical resolution than traditional 8bit instruments.

Waveform details which were previously difficult to see can now be easily distinguished and measured. The HDO4000 oscilloscopes feature a sample rate of 2.5 GS/s with up to 25 Mpts/channel of memory (up to 50 Mpts/ch when interleaved) in two- and four-channel models from 200MHz to 1GHz. The HDO6000 oscilloscopes available in four-channel models deliver sample rates of 2.5 GS/s; a maximum 250-Mpts/channel memory, and bandwidths of 350MHz, 500MHz, and 1GHz. All HDO models have a 12.1" touch display that gives users an easy means of controlling channels, trigger settings, and math and measurement functions.

These tools include WaveScan search and find, history mode waveform playback, sequence acquisition mode, and LabNotebook report generation. Spectrum-analysis and power-measurement software packages extend the oscilloscopes' capabilities while leveraging their 12bit architecture with its wider dynamic range and improved measurement precision.

In addition to HD4096 technology, the HDO features Teledyne LeCroy's ERES (Enhanced Resolution) filtering, which enables users to gain up to three additional bits of resolution for 15bit vertical resolution.

Also available for the HDO are software packages that serve to sharpen the instruments' focus on two key analysis areas that affect a broad range of design and debug tasks. The Spectrum Analyser software converts the controls of an HDO into those of a spectrum analyser. It enables users to adjust the frequency span, resolution bandwidth, and centre frequency. Users can apply filters to input signals and watch the frequency signature change in real time. A unique peak search labels spectral components and presents frequency and level in a table. Users may touch any line to move to that peak. They can use the spectrogram display to see how the spectrum changes over time.

The Power Analysis software option quickly measures and analyses the operating characteristics of power conversion devices and circuits with automatic loss measurements and a dedicated user interface. Areas of turn-on, turn-off and conduction loss are identified with colour coded waveform overlays. Tools for performing critical power switching device measurements, control loop modulation analysis, and line power harmonic testing are all built in.

- Julien Happich
??EE Times Europe

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