Item Description

LCD display frequency and duty cycle, very clear, PWM output, can be set to the frequency and duty cycle.

Wide frequency range, high precision.

Serial communication, TTL level.

Frequency is divided into four ranges, automatic switching.

All set parameters, power-down automatically saved.

Product Specifcations

Parameter:

1. Working voltage: DC 3.3v~30v

2. Frequency range: 1Hz~150kHz (divided into 4 ranges);

3. Frequency precision: 2% of each range;

4. Signal load capacity: output current is about 5-30mA;

5. Output Amplitude: PWM amplitude equal to the input voltage value

6. Environment Temperature Range: -20~+70℃

7. Duty cycle range: 0-100%.

Application:

1. As square wave signal generator for experimental development; 

2. As square wave signal generator for motor driver;

3. As adjustable pulse generator for MCU; 

4. As pulse generator, control related circuits (PWM dimming, speed regulating).

Setting Parameters:

There are 4 independent buttons on the module for setting the frequency value and the duty cycle value. 

Supports short press (increase or decrease one unit by one unit) and long press (fast increase or decrease).

All setting parameters will be saved when powered off to achieve data guaranteed.

Frequency Display Instruction:

The frequency is divided into 4 ranges and switched automatically.

1. XXX (without decimal point): minimum unit is 1Hz, value range is 1Hz~999Hz.

2. X.XX (the decimal point is in the hundred digit): minimum unit is 0.01kHz, value range is 1.00kHz~9.99kHz.

3. XX.X (the decimal point is in the ten digit): minimum unit is 0.1kHz; value range is 10.0kHz~99.9kHz.

4. X.X.X (full decimal point): the minimum unit is 1kHz; the value range is 1kHz~150kHz

e.g. Frequency displays 100 represents 100Hz; displays 1.01 represents 1.01kHz; 

                      displays 54.1 represents 54.1kHz; displays 1.2.4 represents 124kHz

Serial Port Control (micro-controller TTL level communication):

Communication standard: 9600 bps

Data bits: 8

Stop bit: 1

Check digit: none

Flow control: none

1. Set the PWM frequency

"F101": Set the frequency to 101 Hz (001~999)

"F1.05": Set the frequency to 1.05 kHz (1.00~9.99)

"F10.5": Set the frequency to 10.5kHz (10.0~99.9)

"F1.0.5": Set the frequency to 105kHz (1.0.0~1.5.0)

2. Set the PWM duty cycle

"DXXX": Set the PWM duty cycle to XXX; (001~100)

For example, D050, set the PWM duty cycle to be 50%.

3. Read the setting parameters

Send a "read" string and read the set parameters.

Setting is successful and return: DOWN

Setting is failed and return: FALL

Package Content

1x Signal Generator

Note: