AVR-Chat

fnatmed wrote:

>--- In AVR-Chat@yahoogroups.com, Alex Gibson <alxx@a...> wrote:
>  
>
>>techy fellow wrote:
>>
>>    
>>
>>>Hi Guys,
>>>
>>>Can someone pls let me know whether the aforementioned is a good 
>>>      
>>>
>equipment to 
>  
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>>>invest ? Or I should go for a typical 2 channels Oscilloscopes ?
>>>      
>>>
>>The one I use most of the time a HP 54502A
>>dual channel 400MHz dso.
>>
>>One I use only when I need to debug something
>>higher than 200MHz  HP54501  1GHz quad channel scope.
>>    
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>
>Similar here.  I use an HP 54112D quad *color* (woo hoo) digital 
>scope mainly.  Great scope - 100MHz bandwidth, but fast-ass 
>(400MSa/s) capture rate and deep memory.
>
>I also have an HP 54501a 100MHz scope - smaller, and has nice TV 
>triggering and X vs. Y math.  You have the 54501 (no A) and that's a 
>1GHz scope ?
>  
>

Sorry should have checked before sending the other message.
541101D , don't use it much. Also its fans are very noisy.

>>Logic analyser  great when debugging micros.
>>easy to use and easy to carry.
>>http://www.rockylogic.com/products/ant8.html
>>http://www.rockylogic.com/products/ant8spec.html
>>    
>>
>
>Yeah, I looked at the RockyLogic stuff.  I have an older Tek 1241 
>color logic analyzer, which is very nice.  Big and bulky though, only 
>good for the bench.  Powerful and friendly to use for an older 
>piece.  You can find them on ebay at reasonable prices.
>
>Dean.
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>
Want to have a go building my own scope.
ftdi usb chip, analog devices chips(samples) and fpga (or cpld) for the 
fifo buffer

AD9288BST-100  8 BIT 100 MSPS DUAL ADC          - for scope
AD7654AST  16-Bit Simultaneous Sampling 500kSPS    - for logic analyser

There are a few papers and designs floating around for scopes up to a 
few MHz.
If anyones interested I can dig a few links up.