Safety-designed interface cable to connect the optically-isolated serial interface port of ScopeMeter or power quality analyzer to a standard USB-interface on your PC. Optical isolation allows you to float your instrument at mains voltages or beyond, while being connected to your PC. Supports the Fluke 120 Series, Fluke 190 Series ScopeMeters, as well as the 43 and 43B and 430 Series Power Quality analyzers. Supports Windows Vista/ XP/2000/Me/98 second edition. Baud rate: 57.6 k Baud max. Logic states: SPACE = 0, light with wavelength 800 nm, MARK =1, no light. Handshake method: XON/XOFF, software handshake only. Environmental: meets requirements of MIL-T-28800D type III, Class 3. Operating temperature: -20 degree C to 55 degree C. Storage temperature: -20 degree C to 70 degree C. 1.5m Cable length.