Eight digitisers offer up to 48 synchronised channels

Eight instruments have been added to the LXI-based digitizerNETBOX series by Spectrum Instruments. The DN6.49x instruments offer 24 to 48 fully synchronised channels for where a large number of signals need to be acquired and analysed with speed and precision. Typical applications are sensors, detectors, rectifiers and antennae.

Each channel is equipped with a high precision 16bit ADC and a front-end amplifier that features six input ranges from ±200mV to ±10V, switchable input impedance (50Ohm and 1MOhm) and programmable offset. Models offer maximum sampling rates of 10 or 60Msample/s with on-board acquisition memory of either 64 or 128Msample/s, or 128 ad 256Mbyte, per channel.

Input channels can be single-ended or differential, delivering from 12 to 24 true differential inputs. All the ADCs are clocked synchronously to ensure signal timing and inter-channel phase relationships are always preserved. The front-end and clocking system are complemented by advanced trigger circuitry to capture a wide range of input signals, says the company. For example, each individual trigger input can be combined with others to create conditional pattern triggers with standard and/or logic.

The 16bit ADCs typically offer better resolution than other measuring systems, claims the company, such as scopes or analysers. It adds that the optimised digitiser performance allows the finest signal details to be detected.

Acquisition modes include single shot (transient recording), streaming (FIFO), segmented (multiple recording), gated (gated sampling) or a combination of segmented and slow chart recorder operation (ABA mode). Timing between events is via a built-in trigger time stamping function.

The rugged chassis has integrated cooling, including a replaceable dust filter, and low noise power supplies. Front-panel BNC connectors are used for the channel inputs, external clock and external triggering. LED lights show the status of power, trigger and LAN.

Full remote control is achieved through a GbE port, which allows connection to any PC or LAN.

For remote operation, the company offers an embedded server option, DN6.xxx-Emb, that combines a CPU, SSD, memory and a remote software development access method. Softwae can run while connected via LAN for remote access. The instrument can operate independently or, when connected to a LAN, as part of a larger system.

The instruments can be connected to a host computer or on the corporate network and start up SBench 6-Pro software. Acquired and analysed waveforms can be stored and exported to other devices, or other software programs, in a variety of formats such as MATLAB, ASCII, binary and WAV.

Drivers allow users to write control programs using popular programming languages, including C++, Visual Basic, VB.NET, C#, J#, Delphi, IVI and Python code. Third party software support is also provided for LabVIEW, LabWindows and MATLAB.



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