Check the listing for details. Tektronix TM502A Mainframe. Condition: Used. Listed at 152.00 USD. Tektronix TM502A MainframeItemMake: TektronixModel: TM502AItem Specifics/Condition To be tested prior to shipment (Cal & ext warranty available upon request)Description Mainframe Description The TM 502A is a two compartment-wide power module for the TM 500-series of modular instrumentation. The power module accepts up to two independently functional plug-in modules to form a compact, versatile, and low-cost instrumentation system. The TM 502A is a basic power source for plug-in modules of the TM 500 series family. It provides unregulated de and ac supplies and nondedicated power transistors for plug-in usage .Images Term of sale Included Items: This sale does not include probes, cables, manuals,power cords or any other accessories unless otherwise stated or pictured.