Smart data-acquisition family separates A from D
An
Amplicon product story
Edited by the Engineeringtalk editorial team
Jun 4, 2002
Amplicon has a new family of data acquisition boards, providing a smart, space saving solution.
Amplicon has a new family of data acquisition boards, providing a smart, space saving solution.
Designed in modular format the digital and analogue circuitry is separated onto daughter and carrier boards - in piggyback configuration - minimising noise and reducing size.
The boards' small footprint allows integration into half size computer chassis where space is limited.
The modular design separating digital and analogue sections also provides a high level of noise immunity, and in addition a special custom-power regulation unit is included ensuring stable power to the system.
The new data acquisition board family consists of three ranges: simultaneous sampling, high performance multifunction and high performance analogue output boards, each with two or three daughterboard variants.
End users can retain the same application software program, without code modification, when migrating from the standard PCI architecture to PXI or CompactPCI.
The DAQ2000 series offers the capability, with the intelligent timing control logic, for the simultaneous, full speed operation of the analogue I/O functions.
A custom design instrumentation amplifier is also integrated, which allows a signal to settle at higher speeds than commercial amplifiers, before entering the A/D convertors.
The DAQ2200 range has the ability to scan up to 64 channels of data and sample the channels in any order at the maximum conversion rate.
Each channel may be configured with a different gain, unipolar or bipolar, single ended or differential and the resulting information is stored in the channel gain queue.
This facility allows signals of all types to be measured in one system.
The high performance analogue output DAQ2500 range offers both four and eight channels of analogue output as a differentiating factor, in addition to the features mentioned below which are shared by the entire family.
Multiple card synchronisation provides a high-speed signal bus for trigger and clock transmissions and allows multiple cards to be integrated into a system providing card to card synchronisation.
Other features include: analogue and digital triggering, with acquisition of the data either before or after the trigger event occurs; and automatic calibration - which calibrates the analogue I/O channels and stores values in the EEPROM.
Self-calibration is also featured, and both types may be achieved automatically by software command.
Additionally, scatter-gather bus mastering allows the DMA controller to transfer data to and from the memory up to the limited size.
This is a cost effective way of giving the end users high speed, and a large amount of data in the system memory.
The DAQ2000 series may be used for a wide range of applications including telecommunications; power and harmonics analysis; transient capture and noise analysis and with the 64 channel model, to control machinery and generate waveforms.
(This was Engineeringtalk's Top Story on 3 June 2002).
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