... Shanghai Total Co., Ltd. is producing oscilloscope, signal generator, function generator, frequency counter, bench top meter, spectrum analyzer, curve ... YB1620 · Digital Frequency counter · Linear/Log Sweep Frequency Function · External FM VCF Input · TTL/CMOS Output · ... · Full metal box,well EM compliant Specification Name Function Signal Generator Specification ·1Ouput: Freq: YB1602 0.02Hz~2MHz / ...