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High Voltage Multichannel Waveform Generator WFG600

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The multichannel, high voltage, computer controlled Waveform Generator WFG600 is an exceptional instrument designed primarily for experiments on addressing liquid crystal devices and is most suitable for all applications where synchronized trains of pulses with variable width and amplitude are required.

WFG600 can be ordered in 8-channel version, 2-channel version (or anything in between) with ±100V outputs that correspond to our F10A amplifier as standard. Alternatively the 8-channel version can be produced with ±200V outputs. It is also possible to order a 4-channel ±400V model where each channel corresponds to our A800 amplifier (even 8 channels, but in a larger enclosure). Other configurations can be prepared on request.

The WFG600 Waveform Generator delivers arbitrarily placed trigger-pulses and may itself be triggered externally. It can operate in one continuous and two burst modes. The summing module produces a low-voltage superposition of two chosen waveforms. Due to the unique double memory concept the waveforms can be modified during operation. Each output channel contains a very fast high-voltage amplifier.

The WFG600 Waveform Generator is controlled by a PC-Windows® computer(NT, 2000, XP, Vista, 7) or a Macintosh® running OS9. A standard serial interface is used for communication. Waveforms are graphically edited on the screen. Two waveforms and their superposition are displayed simultaneously, others being accessible via pop-up menus. Functional relations between pulses in the waveforms and between time-steps can be programmed-in to avoid repeated manual adjustments. Waveforms may be joined in groups to allow synchronous amplitude adjustments. Waveform data can also be exchanged with a spreadsheet program.

The WFG600 Waveform Generator is delivered with software for Windows and Macintosh environments, and with VI library for LabVIEW®. The software can be freely downloaded for evaluation. All elements of the user interface are explained on the snapshot of Macintosh screen and Windows screen.

Differences between WFG600 Waveform Generator and a typical Arbitrary Waveform Generator

An Arbitrary Waveform Generator (AWG) usually has only one output channel. The WFG600 Waveform Generator is a multichannel device.

The AWG's output-signal is a low voltage one and an amplifier is most often required. The WFG600 Waveform Generator has a very fast high-voltage amplifier built into each channel. Output amplitude is independent of the load (within the current limits).
All AWGs construct their waveforms from many equally spaced points. Such approach suits well generation of analogue signals like "heart beat simulation." The WFG600 Waveform Generator is designed to produce pulse-trains and each pulse has its own width. Waveforms may thus be created and altered faster, simpler and require less memory space.

In an AWG, changes are put directly into the waveform being generated, which results in some transient states. To prevent this, the WFG600 Waveform Generator incorporates two equivalent memory sets. At any time, one of them is used exclusively for waveform generation and is not affected by the editing procedure. The changes are instead directed to the other memory set. When the new waveform is prepared and the old one has reached its end, the memory sets are interchanged. Such memory swapping does not cause any delay and is performed simultaneously in all channels.

The available software for AWGs is very troublesome to use when creating pulse-trains. The hardware and software of the WFG600 Waveform Generator have been developed concurrently and optimized for this purpose. One can, for example, define logical relations between pulses and complex changes can be performed by a single mouse click.

General specifications


Timing


Amplitude


Operating Conditions

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