Genuine original Fluke handheld oscilloscope F199 200MHZ the ScopeMeter Instrument Co., Ltd. Zhengzhou Megumi input digital converter 2-channel input, plus external / DMM input independent floating isolated input channels between input, reference and ground base range 5 ns between isolation voltage up to 1000 V - 2 min / div 10 ns - 2 min / div (192B) the input sensitivity 190C type: 2 mV-100 V / div 190B type: 5 mV-100 V / div trigger type that touch that is measured (Connect-and-View?) Free Run is a single shot, along trigger delay trigger, video trigger, the optional pulse width trigger and outside the trigger 190C Type: Dual slope trigger (n the cycle triggered) burr capture 50 ns (5 μs / div - 1 min / div) oscillometric measurements cursor: the seven kinds cursor measurement functions automatically: 30 kinds of automatic measurement function maximum record length of the oscilloscope recording mode: 27,500 points, 3,000 points / channel oscilloscope mode / channel memory screen: settings: Display Type 190C: 144 mm full color LCD screen, fast refresh rate 190B type: 144 mm monochrome LCD screen, fast refresh rate afterglow 190C type: digital afterglow function the same as the analog oscilloscope waveform attenuation 190B type: n / a waveform comparison 190C type: waveform reference automatic pass / fail testing 190B type: the only waveform Reference Environment Operating Temperature 0oC to 50oC Storage temperature -20 ° C to 60 ° C Operating Altitude 3,000 m safety characteristics of electrical safety 1,000 V CAT II/600V CAT III (EN61010-1) machinery and the general parameters of size 256 x 169 x 64 mm Weight 2.0 kg Warranty 3 years parts and labor (Annex 1), nickel-metal hydride battery battery life: 4 hours RS- 232 interface Zhengzhou Megumi Instrument Co., Ltd. Address: Guancheng district committee 200 meters south Tel: 0371-55676313 Fax :0371 -66,227,105 Contact: Naidu QQ: 2,417,674,438 URL: http://www.5117hm.com