Test / Data Acq.
Real-Time 20-GHz-Bandwidth DSO Takes 50G samples/sec |
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Tuesday, 27 February 2007 |
Even though it makes Tektronix’s DSA72004 (digital serial analyzer), with its 22-psec 10 to 90% rise time, sound like the ultimate real-time oscilloscope, the headline doesn’t tell the whole story. Besides the 20-GHz DSA unit, Tek is rolling out two similar series of 4-, 8-, 12.5-, 16-, and 20-GHz bandwidth scopes. The lower-priced DPO70000 series offers the same bandwidths and channel counts as the DSA series, but the base units provide a less comprehensive—albeit, upgradeable—suite of signal-integrity software tools. All members of both series can acquire more than 300,000 waveforms/sec in the FastAcq segmented-memory mode. All use DSP filters to let you optimize SNR without altering the sampling rate, and all offer an rms-jitter noise floor of less than 400 fsec....more  (0) Comments |
Maximizing Performance Of A Wireless Mesh Network |
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Tuesday, 20 February 2007 |
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Wireless mesh networks have been receiving a great deal of attention as a broadband access alternative for a wide range of applications, including those in the metro, public-safety, government, energy, transportation, hospitality, education, enterprise, carrier-access and residential sectors. An increasing number of deployments today are composed of larger clusters of nodes; previously, there were more point-to-point and point-to-point-to-multipoint deployments. Mesh networks with nodes that have two or more active associations with surrounding nodes can support ranges exceeding one or two hops as they relay traffic to and from the wired broadband connection....more (0) Comments |
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Aeroflex Outlines Initial Product Strategy For 3G LTE Test |
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Friday, 16 February 2007 |
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Aeroflex has outlined its initial strategy for the development of test products to support the new 3G Long-Term Evolution (3G LTE) standard, 3GPP’s vision for ensuring that 3G remains the dominant global cellular technology going forward into the next decade. “It is generally accepted that, beyond the increasing deployment of important technology enhancements such as High Speed Packet Access (HSPA), both on the uplink and the downlink, significant further 3G evolution is required if it is to continue to dominate the global cellular market,” said Phil Windred of Aeroflex Test Solutions, Wireless Division. “3G will need to compete head-on with DSL in order to win the fixed/mobile substitution battle as well as compete with rapidly developing alternative technologies such as WiMAX for broadband wireless access and DVB-H for broadcast.”...more (0) Comments |
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65-nm IC Designs Need DWT (Design With Test) As Well As DFM |
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Thursday, 08 February 2007 |
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As process geometries shrink to 65 nm and below, manufacturing test must expand its role in the design, implementation, and production of semiconductor devices. Much like DFM and its manufacturing-driven design flow—which is an accepted requirement today—a “test-driven” design and implementation flow is now at the forefront of chip-design concerns....more (0) Comments |
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Portable ATE Employs Latest PXI Technology |
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Thursday, 08 February 2007 |
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PXI was designed to tackle Automated Test Equipment (ATE) challenges, but many test and instrumentation applications need to be portable to go where the unit-under-test is. To make a PXI system rugged and portable, packaging has to meet several stringent specifications....more (0) Comments |
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Using Real Time Spectrum Analyzers To Test Passive RFID Tags |
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Wednesday, 07 February 2007 |
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Radio Frequency Identification (RFID) applications are rapidly growing as both reader and tag prices drop, and global markets expand. As costs for submicron passive CMOS tags drop, inventory and other applications increase rapidly. Some have predicted that as the price for passive tag continues to drop, every product sold will have an RFID tag in it. When a passive tag receives a continuous wave (CW) signal from a reader, it rectifies the RF energy to create a small amount of power to run the tag. It then changes the absorption characteristics of its antenna to modulate the signal and reflect it back to the reader via back-scattering....more (0) Comments |
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