Programmable Attenuator The MN64B provide GPIB as a standard feature and are suitable for automatic measuring system components used in R&D, inspection, or production. A relative setting function is also provided, which allows measurement to be referenced to any arbitrary level. Rotary encoders are standard, allowing simple, smooth setting under manual control. KEY FEATURES: - DC to 1 GHz - Wide frequency range - High accuracy - Long operating life - High-speed switching - Readout of attenuation calibration via GPIB - Relative attenuation display function - Rotary encoders for smooth manual setting