The FOM-7900B Fiber Optic System supports up to eight modules of stabilized DFB or Fabry Perot laser sources, fiber optic switches or dual power meters. All are controlled from a single user interface. The mainframe and modules can be controlled by a GPIB/IEEE-488.2 or RS-232 interface. Up to twenty-five FOM-7900B Systems can be linked to control up to 200 channels from one GPIB address.