Quantic PMI Model PFS-618-XREF-CD-1 is a frequency synthesizer that operates over the 6 to 18 GHz frequency range. A 10 MHz external reference is used to lock the unit. This unit features high speed, high accuracy and low phase noise. Housing measures 6.23" x 6.48" x 1.6" with a 9 Pin Sub-D male for power, a 37 Pin Sub-D male for control and SMA female connectors.