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VOLUME -22 NUMBER 12
Publication Date: 12/1/2007
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Special Feature: Test and Measurement
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December 2007 Issue
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Agilent Intros Compact, Low-Power Digitizer
Santa Clara, CA — Agilent Technologies Inc. has introduced its first digitizer from the Acqiris product line. The Acqiris DP1400 high-speed digitizer presents a compact design and highly integrated technology for extremely low-power consumption as well as an unusual simultaneous multibuffer acquisition and readout (SAR) mode that significantly improves measurement throughput. Agilent acquired Acqiris in November 2006.
Designed in a standard short PCI card format, the compact Acqiris DP1400 combines data converter ASIC technology with a high level of component integration for significantly reduced power consumption of less than 15W. It can be used in all standard PCI bus slots, whether long or short, and is especially suited for a variety of test applications, including semiconductor component test, hard disk drive production test and industrial non-destructive testing. With the optional SAR mode, the on-board memory is separated into multiple buffers. As data is acquired into one buffer, another can be read out through the 32-bit/66MHz PCI at up to 250MB/s. In applications where the total data rate of the acquisition is below the PCI data bandwidth, the Acqiris DP1400 with SAR mode can acquire continuously, missing zero events.
The 8-bit, dual-channel DP1400 features an analog front-end mezzanine containing both signal conditioning and high-speed analog-to-digital converter (ADC) components. Both inputs provide an AC- and DC-coupled digitizing channel with 50-Ohm input impedance. The real-time sampling rate of up to 1 GS/s on each channel can be increased up to2 GS/s real-time sampling in single channel mode by interleaving the ADCs. The standard 256 kpoints of onboard memory can be segmented for burst mode acquisitions with an impressive 350 ns of intersegment dead time.
When more than two data-acquisition channels are required, the Acqiris DP1400 digitizers can be synchronized using the 2 GHz auto-synchronization bus (AS Bus 2), a proprietary, high-bandwidth bus system to connect multiple digitizers. The AS Bus 2 distributes both the clock and trigger signals among all the digitizers that participate in the system. It allows any digitizer to generate the trigger while the central digitizer acts as the common synchronous clock source.
For more information, contact: Agilent Technologies, Test and Measurement Organization, 5301 Stevens Creek Blvd., MS 54LAK, Santa Clara, CA 95052
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