Keithley Instruments has announced the availability of its 2006 Test and Measurement Catlog. It features information on the company's RF/microwave products as well as on semiconductor test, DC test, data-acquisition, and optoelectronic test equipment. The catalog is conveniently arranged by major product type and application area. Each section contains a tutorial on test-system design and use with practical tips to help users avoid common measurement errors, increase productivity, and lower their cost of testing. To request a free copy, visit the Keithley web site at