Popular Spectrum Analyzers Expand Frequency Range

External mixers enhance the PSA series spectrum analyzers by increasing their measurement frequency range from 50 GHz to as high as 325 GHz. The enhancement, Option AYZ, includes software that maintains all the performance capabilities of the analyzers and takes advantage of the company's 110-GHz 11970 series harmonic mixers and the 75-GHz 11974 series pre-selected mixers as well as mixers from third-party suppliers that offer coverage to 325 GHz. When the 11970 series mixers or third-party mixers are employed, the analyzer performs signal identification in two ways: image shift and image suppression. The image-shift method moves the signals by a factor of the IF divided by a user- specified harmonic number. Only the desired signal will shift by the correct amount. The image-suppression technique automatically suppresses all images that are not the true signal, leaving only the desired signal on the screen. Other Option AYZ features include automatic harmonic-number setting or manual setting and amplitude correction. Available for the E4440A, E4446A, and E4448A PSA series spectrum analyzers, price for either the option or an upgrade kit is $2,000. AGILENT TECHNOLOGIES INC., Palo Alto, CA. (800) 452-4844, ext. 7846.