Hello all,
Ive just using the C51 compiler and need to test code with the pins.
Im just getting started in electronic, mainly processor stuff. I want to build things like ultrasonic range finders etc for small robots. I would like to buy an oscillosope to help debug and to learn more but I would like some advice about what to buy, I have been thiking of buying a (Philips PM3082 2+2 Channel, 100MHZ, Delay TB etc, Autoset ) what do you think?
I second Andy's suggestion that you look at some of the newer 'pocket scopes'. These are essentially a digital front end to a PC for storage and display. careful, read the datasheets. Many of those have abysmal fmax and samples per second.
For serious '51 work you need (with modern derivatives fully clocked) 100MHz min. For the older steam driven derivatives 20 MHz or so may do. The one thing that will task any scope is an extermely narrow (noise) pulse, I have, in the past when scopes were slower, had to use my DNA computer "as a scope" and reason my way to a pulse so narrow that the scope could not show. Do not sell yourself short and get a slowpoke scope.
Erik
to find noise (in particular 'ground' to 'ground') it is essential that your scope can be used in differential mode (typically a+b and b invert).
Yes, differential mode is invaluable!