aman said:
I was looking at some PC-Based Logic Analyzers. I came across this
one:
http://www.pctestinstruments.com/
Has anybody of you used it before. My requirement is fairly simple. I
have a 8-bit/16-Bit microcontroller at 12MHz. This one samples at 500
MHz. It has 34 channel. Seems a pretty good deal.
Any idea how good it works ?
What are you gonna use it for?
While it's easy to concoct a situation that requires 500MHz. sample
rate, as a practical matter, ain't nothin' much gonna happen on a 12MHz.
system that needs it.
If microcontroller means internal program store and memory, what exactly
are you gonna look at?
You're more likely to want very complex triggering arrangements to find
those subtle, intermittent bugs.
You're more likely to want a fast digital oscilloscope that can actually
see those ground bounces and glitches.
I used to design logic analyzers for a living. In the last 20 years,
the only time I've used one is to look at a RS232 signal when I couldn't
get my hands on a DSO.
If you'd said you were building Pentium processor boards or graphics
display subsystems or real-time FFT processors, my suggestion would have
been quite different.
Also, it's hard to imagine the hassle surrounding an instrument that
plugs into a general purpose PC until you actually try it. Unless you
permanentlly dedicate
the PC and the space it takes up, you'll often find that setting it all
up takes longer than to find the problem by inspection.
mike
--
Return address is VALID but some sites block emails
with links. Delete this sig when replying.
..
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
Wanted 12" LCD for Compaq Armada 7770MT.
Bunch of stuff For Sale and Wanted at the link below.
MAKE THE OBVIOUS CHANGES TO THE LINK
ht<removethis>tp://
www.geocities.com/SiliconValley/Monitor/4710/