AVR-Chat

Hi Alex,
 
Thanks alot for the info. As I am into MCUs, I need an equipment to help me to test my projects. I will be getting an AVR ICD or ICD2 for PIC. But when comes to testing of circuits, I think I need something more than just ICD.
 
I thought of using a logic analyzer since it is meant for digital circuits. Actually, I am about to build one appeared in Elektor magazine Feb 2003 issue. Top speed is 40 Mhz. Pale in comparison to the one sold by Rocky Logic (500 Mhz). I thought since almost all MCUs is less than 32Mhz (even for ATMega 128), a 40Mhz model should do the job. Why do we need 500 Mhz ?
 
cheers,
Davis


Alex Gibson <alxx@alxx.net> wrote:
techy fellow wrote:

>Hi Guys,
> 
>Can someone pls let me know whether the aforementioned is a good equipment to 
>invest ? Or I should go for a typical 2 channels Oscilloscopes ?
> 
>Thanks in advance for your help.
>Davis
>
>  
>

What do you need ?

What frquency range ?
What bandwidth ?

What are you going to use it for ?

I usually use micros and similar boards up to 100MHz
so ended up buying two second hand scopes and a usb  based logic analyser.

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.

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
good for up to around 100MHz.
I use this a lot. Windows software only though.
Still waiting on them to release their api
so you can call it from your own software.

What I find is it is usually easier to have equipment that doesn't need 
a computer.
Hit the switch and it is up and running.
Can have hassles with usb based equipment especially if other devices 
your using use
the same manufacturers device but with a different driver or different 
driver version.

Alex Gibson

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