PWM generator 1Hz-150Khz - 3.3-30V - rectangular PWM signal generator - UART The XY-PWM is an easy-to-use PWM generator with a digital display and four control buttons. It has a built-in UART serial interface enabling communication and control from a PC. It can be used as a square wave generator or for construction or teaching applications. All set parameters are automatically saved before each shutdown of the device and do not disappear. Attention!!! The positive and negative pole of the device must be connected correctly, otherwise the regulator may be damaged. Specification: PWM signal generator Square wave generator Working temperature: -20 C 70 C Voltage: 3.3-30V DC PWM regulation: 1%-100% PWM frequency: 1Hz - 150kHz Frequency Accuracy: 2% Output load capacity: 5 30mA Communication with the computer via UART ARK screw terminals for convenient and quick connection Built-in LCD display Dimensions: 79mm x 43mm x 27mm Panel housing to be placed in a 40mm x 73mm hole Weight: 38g amplitude output: PWM - the input amplitude is equal to the output amplitude UinUout Buttons: FREQ : Raise the channel frequency FREQ : decrease the channel frequency DUTY : increase the duty cycle value DUTY : Decrease the duty cycle value Setting the frequency range: Enter the setting interface by short pressing any “ FREQ ” or “ FREQ ” button in normal working mode to select the frequency range. Switch the frequency range. After pressing the button, pay attention to the position where the decimal point is: Displaying " XXX " without decimal point, then the minimum frequency is 1Hz . The frequency range is 1Hz999Hz . Display " X.XX ", the decimal point is in the second position, then the minimum frequency is 0.01KHz . The frequency range is 1.00KHz9.99KHz . Displaying " XX.X ", the decimal point is in the third position, then the minimum frequency is 0.1KHz , the frequency range is 10.0KHz 99.9KHz . Display " XXX ", all dots are on, then the minimum frequency is 1KHz . The frequency range is 1KHz150KHz . Control via serial port: Communication speed: 9600 bps Data bits: 8 Stop bit: 1 Check digit: none Flow control: none PWM frequency settings F101 : set the frequency to 101HZ (001 to 999) F1.05 : set frequency to 1.05KHZ (1.00 to 9.99) F10.5 : set frequency to 10.5KHZ (10.0 to 99.9) F1.0.5 : set frequency to 105KHZ (1.0.0 to 1.5.0) Duty Cycle Range Settings: DXXX : set the PWM cycle range to XXX: (001 to 100) Example: D050 , 50% fill setting Parameter reading: Correct settings: DOWN Invalid settings: FALL