AD9850 DDS MODULE PDF

AD frequency range: MHz. Square wave: MHz. AD adopts MHz Active Crystal. The module can output two sine waves and two square. IC AD is an ADI DDS chip which be common used in many DDS projects. This AD DDS module is basic on this ADI AD chip. This module provide. IC AD is an ADI DDS chip which be common used in many DDS projects. This AD DDS module is basic on this ADI AD chip.

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Frequency stability test To test the frequency stability, a simple 30m band direct conversion receiver is used, powered from a well-regulated linear power supply. This is how the ‘scope trace looks when the potentiometer is turned all the way anti-clockwise to its limiting position. However the Ultimate3 AD module is now manufactured to order in a factory. Only registered customers who has bought dss product can write reviews.

AD9850 0-40MHz DDS Module

Some kit builders have noted poor output on 10m, modjle has been resolved by very very slight adjustment of the comparator potentiometer. Write Your Own Review Only registered users can write reviews. The description below may help people who need to adjust an AD module for use in an Ultimate3 kit. Forgot Password Login or registration. This is how the ‘scope trace looks when the potentiometer is turned all the way clockwise to its limiting position. App Notes Discussion group Shipping information Beware imitations!

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Join us on Facebook. Please visit our wiki page for more info about this product. AD Function Generator Module. Upon switch on of a new AD module of course, there is some warm-up drift of the A9850 crystal reference oscillator, which shows as drift of the ARGO line. JavaScript seems to be disabled in your browser.

The result should be a sharp, straight line without any instabilities or wiggles. Apparently the comparator performance is less good as the frequency rises, so the adjustment becomes a lot more critical. JavaScript seems to be disabled in your browser. The following examples are NOT correct oscilloscope waveforms: The adjustment is quite sensitive, the tiniest movement of the potentiometer affects the output waveform, and for the majority of the potentiometer’s travel, there is no waveform output at all.

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AD9850 Module

This is fine, not a problem. Note that the adjustment of the comparator threshold described above is carried out at 10, in the 30m band. Shipping Shipping Methods Delivery Information.

You must have JavaScript enabled in your browser to utilize the functionality of this website. The signal at the DDS squarewave output pin 7which is also the same as microprocessor input pin 11, is monitored on a MHz oscilloscope via a x10 probe.

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All the way clockwise: Turn the potentiometer clockwise “right” carefully, until a pulse waveform is seen. A great relief, actually The duty can be adjust by a adjustable resistor – which change the adjust voltage level of the comparer.

Oscilloscopes Affordable portable and bench scopes–DIY kits available! First name is required! Turn the potentiometer anti-clockwise “left” carefully, until a pulse waveform is seen. The image to the right shows 90 seconds of testing.

To test the frequency stability, a simple 30m band direct conversion receiver is used, powered from a well-regulated linear power supply.

DDS module testing

Turn the potentiometer clockwise “right” carefully, just a little at a time! Turn the potentiometer anti-clockwise “left” carefully, just a little at a time! Write Your Own Review Only registered customers who has bought this product can write reviews. Connect your favorite gear. Affordable SDR ad98550 everyone.

Where To Buy Nooelec. For technical support, please open a ticket on Itead Support System.

The second dit speed ensures that nothing could possibly change state that could interfere with any measurement. Sign up for price alert. Features 2 channles square wave output and 2 chanles sine wave output Sine wave: All the way anti-clockwise: