<p>For example:Display 100 means PWM output frequency is 100Hz;Display 1.01 means PWM output frequency is 1.01KHz;Display 54.1 means PWM output frequency is 54.1KHz;Display 1.2.4 means PWM output frequency is 124KHz;</p> <p>Set PWM frequency:F101:Set frequency is 101Hz.101 can by replace by 001~999;F1.05:Set frequency is 1.05KHz.1.05 can by replace by 1.00~9.99;F10.5:Set frequency is 10.5KHz.10.5 can by replace by 10.0~99.9;F1.0.5:Set frequency is 105KHz.1.0.5 can by replace by 1.0.0~1.5.0;</p> <p>Frequency set range:Enter the settings interface when short press any button FREQ+ or FREQ- in the normal running status to select frequency range.Automatically switch frequency range.Pay attention to the position where the decimal point moves when the button is pressed.Display XXX.</p> <p>No decimal point,The minimum frequency is 1Hz.The frequency range is 1Hz ~ 999Hz.Display X.XX.The decimal point is the penultimate, The minimum frequency is 0.01KHz.The frequency range is 1.00KHz ~ 9.99KHz.Display XX.X.The decimal point is the third last,The minimum frequency is 0.1KHz.The frequency range is 10.0KHz ~ 99.9KHz.Display X.X.X.The decimal point is fully lit,The minimum frequency is 1KHz.The frequency range is 1KHz ~ 150KHz.</p> <p>Duty cycle set range:Enter the settings interface when short press any button DUTY+ or DUTY- in the normal running status to select duty cycle.Automaticallyswitch frequency range.Duty cycle range is 0.00%-100%.</p> <p>Use steps:Connect to power supply;Short or long press button FREQ+ or FREQ- to set frequency;Short or long press button DUTY+ or DUTY- to set duty cycle;Connect to load.UART communication and parameter settingsThe system supports UART data upload and parameter setting functions (TTL level);</p> <p>UART: 9600, 8, 1</p> <p>LCD high definition display;Support UART;Support frequency adjustment;Support duty le adjustment;High precision detection;</p> <p>Support power-down memory function;</p> <p>1-Channel PWM output.</p> <p>Work voltage:DC 3.3V-30V;Frequency range:1Hz~150KHz;Frequency accuracy:2%;Duty cycle range:0.00%-100%;Output Current:About 5-30mA;</p> <p>Output amplitude:Same to input voltage;</p> <p>Operating temperature:-20 Celsius~70 Celsius</p> <p>Set PWM duty cycle:DXXX:Set duty cycle is XXX. XXX can be 000-100.E.g:D051 means PWN duty cycle is be set as 51%.</p> <p>Read set parameter:Send read and then get parameter.Return value:Return DOWN:Set success.Return FALL:Set fail.</p> <p>Application:</p> <p>Square wave signal generator, generating square wave signal for experimental development;Used to generate a square wave signal that controls the motor driver;Generate adjustable pulses for use by the MCU;Dimmer;Speed governor; </p> <p>colour:gray</p> <p>Material:plastic</p> <p>size:4.3*2.7*7.9CM</p> <p>Package Contents:</p> <p>1*Signal Generator</p> <p>Note:</p> <p>It's 1-channel PWM output signals are the same.They can not adjust independently.</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>