The Teradyne / PTS 6400RJN1X-13/X-54/SX-72/X-137/X-139 is a high-performance, rack-mounted programmable frequency synthesizer engineered by Programmed Test Sources, Inc. Designed for precision laboratory use and automated test equipment (ATE) integration, this 6400 series unit delivers a highly stable 400 MHz output. It features robust remote control capabilities via a high-density D-sub connector and easily integrates with external frequency standards using its 5/10 MHz reference BNC inputs. Manufactured in the USA and carrying CE and TUV certifications, this synthesizer ensures reliable, low-noise signal generation for demanding testing, communication, and scientific applications.