Starting to use ADC-40

 
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pmorris
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PostPosted: Mon May 19, 2003 3:47 pm    Post subject: Starting to use ADC-40 Reply with quote
Very basic - but this is a serious enquiry!
I have an ADC-40 and the software- what do I need to have connected to the 'round connection' if I want to show (for example) sound wave forms using the oscillocope option? What leads etc?

Many thanks inadvance for any advice. Confused
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markspencer
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Joined: 07 May 2003
Posts: 610

PostPosted: Tue May 20, 2003 8:01 am    Post subject: Reply with quote
Hi,

To measure sound waves with the ADC-40 you will need a microphone connected which you will connect to a BNC.

To source the BNC connector try:
www.farnell.com.

The microphone cables can be soldered onto the BNC. The microphone will recieve the noise and create a voltage. To generate higher voltages you may need to use a powered microphone.

The voltage may be very low with slight changes, so you may have to amplify the signal coming from the microphone if you decide against a powered one, as the ADC-40 has an 8 bit resolution and can only detect changes of 39 mV. The sound waves frequency should not exceed the ADC-40's bandwidth otherwise you will not capture it.
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