Product category:
Board-Level Instruments
News Release from: TTi (Thurlby Thandar Instruments) | Subject: Gage digitiser cards
Edited by the Electronicstalk Editorial
Team on 05 December 2005
Digitiser cards detect small signals in
noise
Gage Applied Technologies has added optional onboard signal averaging capabilities in its range of high-resolution digitiser cards, allowing users to detect very small signals in noisy environments.
Gage Applied Technologies has added optional onboard signal averaging capabilities in its range of high-resolution digitiser cards, allowing users to detect very small signals in noisy environments The signal averaging capability takes advantage of the onboard FPGA technology on some Gage 12 and 14bit digitisers, and allows the averaging to take place rapidly with no CPU loading on the host PC
This article was originally published on Electronicstalk on 12 May 2000 at 8.00am (UK)
Related stories
Compact bench power supply provides 175W
The EX355, new from TTi (Thurlby Thandar Instruments), is a single-output laboratory DC power supply providing an output from 0 to 35V at 0 to 5A.
Programmable power-supplies offer outputs to 1kW
The XHR range of programmable power supplies, offering output ratings up to 1 kW is power-factor corrected for low current draw and reduced generation of input current harmonics.
The process consists of making multiple acquisitions of a repetitive waveform and averaging all acquisitions together.
Any random noise is subsequently averaged to near zero, while the amplitude of the underlying repetitive signal remains unchanged.
As the signal averaging is performed onboard using the intelligent processing of the FPGA, the amount of data that needs to be transferred via the PCIbus to the PC is reduced by a factor that may be as high as 1000.
Waveforms can be signal-averaged at a rate of greater than 100,000 waveforms per second for a data processing rate of 800Mbit/s.
Signal averaging technology provides a fast and efficient means for users to process data onboard the digitiser, and transfer only the data that is of interest to the PC for further analysis.
In particular, it is a powerful method of improving the fidelity of noisy repetitive signals.
Using signal averaging, small signals can be extracted from a background of high amplitude noise, which may even be larger than the actual signal itself.
Applications for Gage's new signal averaging technology include: ultrasonic, radar or lidar testing; optical fibre testing; stimulus/response systems; and network analysis.
Gage Applied Technologies is a worldwide leader in the design and manufacture of high-performance PC-based digitiser and oscilloscope cards.
In the UK, Gage products are available exclusively from TTi.
• TTi (Thurlby Thandar Instruments): contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
