Teledyne LeCroy launches second-gen 12bit resolution scopes
Teledyne LeCroy has launched a second generation of 12bit resolution oscilloscopes, with bandwidths up to 1Gsample/s.
“The HDO6000 is really a second generation of our HRO, with a much faster processor, more memory and more maths tools,” said a spokesman. “You never knew what you were missing till you looked at a 12bit oscilloscope.”
As the LeCroy HRO 66Zi, Teledyne’s earlier 12bit offering went up to 600MHz, or 400MHz with the 64Zi.
Teledyne is not the only company making 12bit scopes. Pico Technology’s PicoScope 4227, for example, is a 12bit 100MHz PC-based instrument whose two 125Msample/s channels can be added for 250Msample/s.
HDO4000 models have up to 25Mpoint/channel memory (up to 50Mpoint when interleaved), with 200, 350, 500MHz, or 1GHz four channel models, and two channel versions at 200 and 350MHz. The CPU is a 1.6GHz Celeron with 2Gbyte of ram.
HDO6000 scopes are all four channel with 250Mpoint/channel memory maximum and bandwidths of 350MHz 500MHz or 1GHz. Processing comes from a 2.5GHz Intel i5 with 4Gbyte of ram.
Inside, both the variable gain amplifier and ADC are new SiGe chips, and a significant amount of work has been done on the power supply to prevent noise getting into critical circuits, said a Teledyne spokesman.
The user interface has had a make-over. Examples are: touchable ‘buttons’ that look a lot more like buttons and video-player-like controls can be turned on for sweeping through long waveform records. Possibly for the first time in a scope, the screen is multi-touch.
Pinch-to-zoom and swipe-to-pan are the only multi-touch functions implemented so far, although the hardware is capable of more.
Why two and not more? According to the spokesman, the company is reluctant to add more for the sake of it, and is awaiting customer feedback.
“Every few months we will have a software up-grade with new multi-touch facilities,” he said.
Some analysis software is included, and more is available.
“All HDO oscilloscopes contain tools for debug and waveform analysis,” said Teledyne. “The ‘find’ tool allows searching a single acquisition for runts, glitches, and other anomalies using more than 20 different criteria, and can also be used to set up a scan condition and search for an event for hours or even days.”
‘History’ mode permits scrolling back in time to isolate anomalies and measure them with parameters or cursors, and for serial data streams, there is a trigger and decode function.
‘Sequence’ mode allows the capture of many fast pulses in quick succession, or the capture of short events separated by long periods. It displays the trigger events one after another across the screen, without intervening irrelevant samples.
Math functions include averaging, enhanced resolution (to 15bit) and FFT.
Data can be presented as statistics, histograms and measurement trends to show waveform changes over time.
LabNotebook is an in-built documentation and report generation tool. Also available are two optional software packages: a spectrum analyser and one aimed at power supply development.
The spectrum analyser software, standard in the 6000 range, allows users adjust frequency span, resolution bandwidth and centre frequency, and apply filters to input signals.
“A peak search labels spectral components and presents frequency and level in a table,” said Teledyne. “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 software analyses the operating characteristics of power conversion devices and circuits, with “automatic loss measurements and a dedicated user interface”, said the firm. “Areas of turn-on, turn-off and conduction loss are identified with colour coded waveform overlays.”
It includes tools for critical power switching device measurements, control loop modulation analysis, and line power harmonic testing.
Realising that scopes sometimes have to sit on shelves above a bench, the instrument’s feet can be reconfigured to tilt the whole instrument forward, directing the display downward.
Teledyne bought LeCroy earlier this year, and scope watchers are waiting to see what the LeCroy team – which has so far squeezed 65GHz out of its SiGe front-end chips – does with Teledyne’s 400GHz indium phosphide technology.
Tektronix, and Fluke, and Keithley, have been bought by Dana.