... Shanghai Total Co., Ltd. is producing oscilloscope, signal generator, function generator, frequency counter, bench top meter, spectrum analyzer, curve ... , off-line UPS, interactive UPS, EPS, sine wave inverter.YB1602 YB1605 YB1610 YB1615 YB1620 · Digital Frequency counter · ... metal box,well EM compliant Specification Name Function Signal Generator Specification ·1Ouput: Freq: YB1602 0.02Hz~2MHz /YB1605 ...