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This is a Tektronix PG501 Pulse Generator plug in for the TM500 Instrument Series. The instrument is tested and fully functional, as shown in the oscilloscope (not included in the auction) pictures. Calibration is not guaranteed.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.