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Looking for information about test and measurement? Read about this topic in the latest articles from Radio magazine. Follow the links below.
Taming a wild monitor point
May 1, 2008,
By John Battison, P.E., technical editor, RF
When monitor points suddenly exhibit surprisingly high field strength, one's first inclination is to look at the previous logs and ask the technical staff about the monitoring point's history 
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Day Sequerra M2.2R
Mar 1, 2008,
By Doug Irwin, CPBE AMD
Day Sequerra has updated its M2.0 HD modulation monitor, adding some nice and very useful features. I first reviewed the original M2.0 in Radio magazine in May 2006, and the new M2.2R model is an attractive piece of test equipment that will likely go in your facility where it can be seen by you and others.
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Digital Audio
May 1, 2007,
by Glen Kropuenske
With analog, engineers know how to measure levels, frequency response and distortion to gauge the audio performance. Unfortunately, digital audio changes all this.
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Whirlwind AES Qbox
May 1, 2007,
By Jeff Smith, CEA CBNT
When a station changes to AES3 or S/PDIF digital audio, the availability of easy-to-use, rugged and portable test equipment declines greatly.
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Audemat-Aztec Goldeneagle FM/HD
Jan 1, 2007,
By Chris Tarr, CBT CBNT CBRE
With HD Radio, stations at minimum need to monitor the main channel audio. But there's also multicasting, PAD and funny initials like DAAI and QI that tell volumes about the signal. The big question is how to acquire all of that data.
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Sign Off
Sep 1, 2006,
by Kari Taylor, senior associate editor
The computer hard drive is 50 years old this month. Take a look at the IBM RAMAC, which held 5MB of data and was the size of a refrigerator.
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Trends in Test Equipment
Oct 1, 2005,
By Doug Irwin
If you had the opportunity to equip yourself anew for the year, which pieces of equipment would make your core list?
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Prism Sound Dscope III
Aug 1, 2005,
By Doug Irwin
Doug Irwin put the Dscope test set through several tests of his own.
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Proving Performance: Test and measurement
Dec 1, 2004,
By Chriss Scherer, editor
While the basic skills of evaluating system performance are still in place, the tools and the methods used today are changing significantly. Digital signals require analog tools, but you can't neglect the analog elements either.
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Test and measurement in the digital age
Sep 1, 2004,
By Kevin McNamara, CNE
A few engineers believe it is easier to maintain a digital audio chain because they no longer need to deal with the audible effects of ground loops, noise, crosstalk and mismatches typical in some analog signal paths. Wrong!
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Mooretronix Stereo Tracer
Jan 1, 2004,
By Tom Atkins
This interface facilitates making analog audio measurements with an oscilloscope.
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DK-Audio MSD100
Oct 1, 2003,
By Mike Callaghan
Early solid-state audio spectrum instruments provided limited resolution, but the MSD100 offers a bright, easily read display of stereo separation and frequency dispersion.
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NTI Digilyzer DL1
Oct 1, 2003,
by Eddie Ciletti
Most digital equipment is woefuly lacking in its ability to display why it is unhappy. Luckily, the Digilyzer displays things such as lack of data compliance, bad cables or poor signal quality.
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