The BNC Model 855 is a phase coherent multi-output ultra-fast switching and low phase noise signal generator with frequency ranges from 10 MHz to 6.2, 12.5 or 20 GHz, with excellent phase noise and spurious and harmonic rejection. A high-stability OCXO reference provides excellent frequency accuracy and stability.

The Model 855 provides two to eight independent outputs in a 1U or 3U enclosure. Various control interfaces: USB, LAN  or GPIB, and a rich library of APIs are provided.