As a courtesy to customers, on this page you can find PDF versions of some of the technical literature for this product. The 4140B was discontinued on November 1, 2000 and is under support through December 31, 2005.
Note: Discontinued means that the product is no longer sold, while obsolete means that the product is no longer supported. Keysight Technologies normally supports products for a minimum of 5 years after discontinuance.