Specification Brand : Fafeicy BulletPoint1 : 2 sine and 2 squarewave output BulletPoint2 : After the increase of harmonics in the frequency range of 20-30MHz, the waveform will become increasingly unclean BulletPoint3 : Low-pass filter with 70MHz, so the waveform better than SN BulletPoint4 : DA generates a reference pin (PIN12) for easy adjustment of the output waveform size BulletPoint5 : The reference input voltage of the comparator is generated by a variable resistor, which can adjust the different duty cycle square waves Color : As Shown ExternallyAssignedProductIdentifier : 7677840359136 IncludedComponents : 1 x 7.83Hz Schumann Resonance Generator, 1 x USB Cable ItemDisplayWeight : 0.44 pounds ItemName : Adjust DDS AD9850 Generator Module Sine Squarewave 0-40MHz ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 5 centimeters ItemPackageDimensions_Width : 3 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : function-generators Manufacturer : Fafeicy Material : Metal and plastic ModelName : Fafeicyg37a9uzmh0 ModelNumber : Fafeicyg37a9uzmh0 NumberOfBoxes : 1 NumberOfItems : 1 NumberOfLithiumMetalCells : 1 PartNumber : Fafeicyg37a9uzmh0 ProductDescription : Spec: Features: 2 sine and 2 squarewave output. After the 20-30MHz frequency harmonics increases, the waveform will be less and less clean. Low-pass filter with 70MHz, so the waveform better than SN. DA produced the benchmark pin (PIN12) leads for easy adjustment to do the magnitude of the output waveform application. Comparator reference input voltage generated by the variable resistor, the resistor can be adjusted duty cycle squarewave of different. AD9850 module adopts 125MHz crystal oscillator Specifications: AD9850: 0-40MHz. : 0-1MHz Size: 4.5 x 2.5cm/1.7 x 0.9inch Weight:10g Package Included: 1 x AD9850 Generator Module