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Dear Sir/Madam
Latest developments in test & measurements do not only include higher measurements frequencies and better resolution but also network technologies to perform remote measurements easily. This newsletter contains some examples. Enjoy!
Wolfgang Patelay
Technical Editor, EPN
Sponsor National Instruments
NEW! 40 USB Data Acquisition Devices from National Instruments
NI USB DAQ devices combine the ease of use of USB with innovative technologies for high-speed data streaming and accurate measurements. The complete USB offering from NI now includes 40 devices ranging from low-cost devices starting at $99 USD, high-speed devices featuring 1 MS/s sampling speeds, and modular USB data acquisition systems for low-, mid-, and high- channel count applications. Compare and Buy USB DAQ Hardware from NI.
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Hand-held Air Meter (Fluke)
The Fluke 975 AirMeter test tool simultaneously measures, logs and displays temperature (wet bulb and dew point), humidity, carbon dioxide (CO2) and carbon monoxide (CO) levels on a bright, backlit display. It also includes airflow and velocity capability using the optional air-velocity probe.
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Cost-Effective Scopes (Tektronix)
The TDS1000B and TDS2000B digital-storage oscilloscopes can provide up to 200MHz of bandwidth, and a 2Gsample/s sample rate per channel. The low-cost scopes have both USB Flash and device ports and are designed to simplify configuration, testing and documentation for engineers.
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Low-Cost RF Signal Generator (Agilent)
The N9310A RF signal generator covers frequencies from 9kHz to 3GHz and a full range of modulation types, including AM, FM, pulse modulations and an optional IQ-modulaton capacity. With an external IQ source, it can easily generate various types of modulation - even I/Q-modulated signals such as GSM, CDMA and OFDM signals as seen in modern digital communications systems.
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Fanless Mini DAQ System (Meilhaus)
The iMEasbox Red is a very compact fanless mini DAQ system, complete with a 16-bit DAQ board ME-RedFoXX ME-4660, ME-Power-CD/driver software, MEsslabor software for Windows and connectivity accessories, all in a footprint of only 195x268x80mm. A basic example configuration would be a super compact iPC (wall) mountable or desktop chassis featuring a PCI backplane with one PCI slot.
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Exploring LXI's Advanced Capabilities
The new LXI (LAN Extensions for Instrumentation) specification helps engineers overcome the limitations of common test-system architectures in several ways. LXI systems employ Ethernet LAN for device interconnection so they don't limit the number of interconnected devices, allowing easier, less expensive connections. Ethernet networks easily support physically distributed systems, large data sets, and high data rates. Paul Franklin and Andrew Creque from Keithley Instruments describe the LXI capabilities in detail in their article in EPN.
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Controlling and Analyzing BGA Pins in Software
It is a difficult situation in the engineering process when a design that has tested out correct in the lab fails when it is actually built to specification. For example, you can design a processor in a BGA package into a circuit, send it off to fab, and on return the actual board does not work. Craig Haller from Macraigor Systems shows his article in EPN a solution to avoid this situation.
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Active-filter circuit and oscilloscope inspect a Class D amplifier’s output
Testing a Class D amplifier poses some difficulties. The amplifier’s output comprises a PWM (pulse-width-modulated) signal that swings between ground and the supply voltage at a frequency that’s usually 200 kHz to 2 MHz. However, when you view this PWM output on an oscilloscope, you’ll see no resemblance to the sine-wave input. You can observe a Class D audio amplifier’s output if you introduce the filter circuit based on the MAX-9727 quad-audio-line driver in the Design Idea by John Guy from Maxim.
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IC and DMM form direct-read-out temperature probe
The simple temperature-measurement probe in the Design Idea by Alfredo H Saab and Bich Pham from Maxim can serve as an indispensable tool for troubleshooting and debugging electronic circuits. To measure temperature at several points, you can equip MAX6610 with a probe, or you can permanently integrate one or more devices into a pc board or attach them to components.
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4| Book of The Month |
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Quality Management Essentials, by David Hoyle
Quality Management Essentials is the perfect brief, yet authoritative, introduction to the fundamentals of quality management. Quality in organizations, large or small, is achieved with intelligent use of various concepts, principles, tools and techniques.
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