Programmed Test Sources Inc. is a manufacturer of fast switching low noise frequency synthesizers designed for stand-alone and OEM (original equipment manufacturer) uses. The firm specializes in offering complete lines of synthesizers available in the industry. Located in Littleton, Mass., Programmed Test Sources Inc. has shipped more than 10,000 of PTS synthesizers internationally. The firm has catered to the needs of Analog Devices, Atmel, Boeing, Credence, G.E., Hughes, ITT, JEOL, LTX, Motorola, Philips, Raytheon, Siemens, Teradyne, Toshiba, and among others.