The Keysight/Agilent/HP 85629A Test and Adjustment Module is an accessory that creates a new approach to servicing your 8562A/B spectrum analyzer. The module plugs into the rear panel of an HP 8560 series analyzer and automates high- level diagnostics, self-test, and adjustment procedures. It performs more than 1000 troubleshooting measurements. Readjustments are fast and accurate because the module controls internal analyzer settings as well as external test equipment.