Specification----------------------------------------------------------------------------Arbitrary wave: 1 Hz ~ 20 MHZResolution: 1HzPrecision: 1ppm, 18~28Square wave propertyRise/Fall time Typical (1kHz, 1Vpp)9nsOvershootTypical (100kHz, 1Vpp) 5%Duty cycle 0.001% ~ 99.999%; The range varies with the frequencyAsymmetry 1% of the period plus 4nsTriangular wave propertyLinear 1% of peak output (typical, 1kHz, 1Vpp, symmetry 100%)Symmetry: 0% ~ 100%Impulse wave propertyBurst counting:1 ~ 2000 000 000Start/stop phas: 0 ~ 360 Internal cycle: 2 s ~ 500 sDoor control sourceExternal triggerTrigger sourceInternal, external, manualFrequency meterMeasurement functionsFrequency, period, positive/negative pulse width, duty cycleFrequency: 1 Hz ~ 80 MHZGate time: 10ms~16sInput signal range: 0 ~ 3.3 VTrigger propertyTrigger inputLevelTTL - compatibleSlopeUp or down (optional)Pulse width: >100nsTrigger outputLevelTTL - compatibleThe pulse width: >60nsMaximum frequency: 1MHzReference clockExternal reference inputLock range: 10 MHz 50 HzLevelLow level: 0~400mV, high level: 2.5V~5VLocking time: < 2 sInput impedance: 50 , DC couplingInternal reference outputFrequency: 10 MHz + 50 HzLevel: 3.3 VppOutput impedance (typical value): 50 , DC couplingSynchronous outputLevelTTL - compatibleImpedance50, nominal valueGeneral featuresInterfaceUSB Host, USB DeviceDisplay4.3-inch color TFT LCD screenVoltage100-120VACRMS(10%),45Hz to 440Hz, CAT120-240VACRMS(10%),45Hz to 66Hz, CATPower: