Analog testing


        Radio on FacebookJoin us on Facebook

Tech Tips, July 2010

Ed Treese is a contract engineer based in Kansas City. While his work includes plenty of digital signals, he still encounters plenty of analog equipment in his work. He shared some notes on his favorite piece of analog test equipment: a pair of headphones.

He keeps a pair of Sennheiser HD414 high-impedance headphones in his toolkit. The original version of these headphones had an impedance around 2k ohms. Most headphones available today are 50 ohms or less. Because of the high impedance, Treese can tap them into an active audio circuit with little or no effect to the audio path.

Treese also keeps a few adapters handy to simplify connections. He has a stereo headphone jack that is monoed to alligator clips. He also keeps a TAC clip on hand to slip on two rows of 66 punch blocks. He also carries an XLR through connector with a stereo headphone jack (again monoed) all in parallel. The XLRs can be used individually or in-line with the audio circuit.


We need your tips!

Ideas submitted to Tech Tips may be suitable to earn SBE recertification credits.

Do you have a tech tip? Send it to us at radio@RadioMagOnline.com




Acceptable Use Policy
blog comments powered by Disqus

[an error occurred while processing this directive]

Today in Radio History

Milestones From Radio's Past

The history of radio broadcasting extends beyond the work of a few famous inventors.

EAS Information More on EAS

NWS XML/Atom Feed for CAP Messages

The feed provides feeds for all US states and territories.

Wallpaper Calendar

Radio 2014 Calendar Wallpaper

Need a calendar for your computer desktop? Use one of ours.

The Wire

A virtual press conference

Information from manufacturers and associations about industry news, products, technology and business announcements.

Join Us Facebook Twitter YouTube LinkedIn
Radio magazine cover

Current Issue

88Nine Radio Milwaukee

A New Home Brings Community Together

Browse Back Issues

[an error occurred while processing this directive]