Colby Instruments is an industry leader in the design and manufacture of high-precision programmable microwave and RF delay line instruments and modules. Our products include a patented design that offers the highest precision resolution available for any instrumentation electromechanical delay line while also offering excellent repeatability. Each delay line model in our Programmable Delay Line (PDL) series is programmable via remote interface or local control. Only the highest performance products and components available in the industry are used in the design and manufacture of all of our products.

Programmable Delay Lines are also used as Phase Shifters in many microwave and RF signal applications where the requirement to electrically delay or phase shift signals to a high degree of accuracy and precision is of critical importance. Our new PDL-100A Programmable Delay Line Series of instruments lead the industry in offering delay resolution to 0.50 picosecond accuracy (or phase shift precision to 0.18 degrees per 1 GHz signal frequency).

Our focus on engineering design excellence has produced high precision products with a proven performance history. Typical product applications for the Programmable Delay Line instrument include include test and measurement, Defense systems, fiber optics, Telecommunications, Government, high precision timing and synchronization applications, microwave and high frequency RF phase shifting, phase noise analysis, University research, and laser research facilities.