Emax

hey Tristian.

sorry, but you think wrong.

I have a DSO at work that costs more than an EII, an EIII, an emax, an 
emax II, and old mac, and a PC with a proper synchronious RS422 port 
combined... and it won't help with debugging a serial comms protocol, 
beyond the most basic of issues.

Any old 10MHz+ cro will show you in about 20 seconds if you have a 
voltage problem with your serial interface at 500khz.... After that 
there can be all sorts of issues, relating to subtle timing problems, 
and a simple USB connected logic analyser will be the tool to 
investigate and quantify any problems there.... (once you actually have 
the PC running an externally clocked synchronous RS422 interface....)


tu@... wrote:

>I think a DSO is a better option here as this investigation will most likely involve looking at the signal waveforms. A logic analyzer will usually have 
>more channels and a deeper memory than a DSO but it will just show logic transitions. A DSO with a combined logic analyzer pod would probably be 
>ideal, but more expensive.
>
>/Tristan
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