SAVIS 208 is a 8×8 video and stereo audio AFV matrix. May be computer controlled by EIA RS 232 interface. Technical Specifications. Video; Input level: 1 Vpp nom. 2 Vpp max. Input ret. loss: 44 dB at 5 MHz: Output ret. loss: 48 dB at 5 MHz: DC on outputs: ±12 mV: Frequency response-0,1dB 10 Hz to 8 MHz: