Check the listing for details. Tektronix PG 508 50Mhz Pulse Generator Plug-In Module Tested Working. Condition: Used. Listed at 129.97 USD. In good Physical condition, as shown in actual photos. What you see in the picture(s) is what you get nothing more nothing less. If fact it may have unknown flaws and deficiencies. the item has only been tested to the extent described in the item condition/testing notes.