The CPDL-200A - 1.25 ns from Colby Instruments are a series of dual-channel programmable delay lines that operate from DC to 12.5 GHz. These delay lines provide a delay from 0 to 6.35 ns on both channels with a resolution of 50 picoseconds (ps). This delay line is available as a module with SMA female connectors.
The CPDL-200A - 1.25 ns provides electrical delay through the use of microwave relays and low-loss precision-cut semi-rigid coaxial cables inserted into the signal path. The step size resolution is fixed at 10.0 ps. The delay lines are programmable and can be locally controlled through an MT-100A Micro terminal (LCD display and numeric keypad) or remotely through GPIB (IEEE 488.2), Ethernet TCP/IP, and RS-232 Serial interfaces.