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From: Oliver Betz on 20 Oct 2009 03:56
Rob Gaddi wrote:

[...]

>I've been pretty pleased with the Intronix LA1034 at
>http://www.pctestinstruments.com/ For south of $400, you'll probably
>be hard pressed to rent something any cheaper.

Consider also the DigiView DV1-100
http://www.tech-tools.com/dv_main.htm - it has much more memory (but a
simpler input circuitry).

Oliver
--
Oliver Betz, Munich
despammed.com might be broken, use Reply-To:
From: rickman on 21 Oct 2009 10:40
I've been looking for a good oscilloscope front end for a PC, but I
haven't found anything I think is worth the price. There are a few
units that can do both scope and logic analyzer which would be ideal
for me, two channels of analog and 16 to 32 channels of digital. Can
anyone recommend something in this line?

Rick


On Oct 19, 4:42 pm, Mel <mwil...(a)the-wire.com> wrote:
> I'm having trouble with an EEPROM and an LCD module hooked to an
> AT91SAM7S256.  Software is using the at91lib TWI_* routines that came with
> an evaluation kit.  The program seems to be hanging up on incomplete I/O
> with the LCD module, but I don't know why.  Analyzing the TWI (aka I2C)
> protocol would either nail the problem or assure me that there was nothing
> to see there.
>
> Where could I get the use of an analyzer?
>
>         Thanks,         Mel.

From: ChrisQ on 21 Oct 2009 17:00
Mel wrote:
> I'm having trouble with an EEPROM and an LCD module hooked to an
> AT91SAM7S256. Software is using the at91lib TWI_* routines that came with
> an evaluation kit. The program seems to be hanging up on incomplete I/O
> with the LCD module, but I don't know why. Analyzing the TWI (aka I2C)
> protocol would either nail the problem or assure me that there was nothing
> to see there.
>
> Where could I get the use of an analyzer?
>
> Thanks, Mel.
>

On the basis that you'll almost definately need it again, renting is a
bad investment and just dead money. You could buy a good used la on ebay
for a fraction of what it would cost you to rent for a month, or even
from a dealer.

Depending on speed requiremnts, an HP 16xx series might be enough, or
better still, one of the system type HP16500 or 16700 series. The latter
were 25 to 50k $ new and more or less last forever...

regards,

Chris
From: Not Really Me on 22 Oct 2009 11:19
Mel wrote:
> I'm having trouble with an EEPROM and an LCD module hooked to an
> AT91SAM7S256. Software is using the at91lib TWI_* routines that came
> with
> an evaluation kit. The program seems to be hanging up on incomplete
> I/O
> with the LCD module, but I don't know why. Analyzing the TWI (aka
> I2C)
> protocol would either nail the problem or assure me that there was
> nothing
> to see there.
>
> Where could I get the use of an analyzer?
>
> Thanks, Mel.
>

Yikes, buy, don't rent. We have a DigiView from Tech-Tools that we love.
$500 at http://www.tech-tools.com/dv_main.htm.

This is phenominal logic analyzer. Does data interpretation and lots more.

--
Scott
Validated Software
Lafayette, CO



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From: rickman on 22 Oct 2009 13:57
On Oct 22, 11:19 am, "Not Really Me"
<sc...(a)validatedQWERTYsoftware.XYZZY.com> wrote:
> Mel wrote:
> > I'm having trouble with an EEPROM and an LCD module hooked to an
> > AT91SAM7S256.  Software is using the at91lib TWI_* routines that came
> > with
> > an evaluation kit.  The program seems to be hanging up on incomplete
> > I/O
> > with the LCD module, but I don't know why.  Analyzing the TWI (aka
> > I2C)
> > protocol would either nail the problem or assure me that there was
> > nothing
> > to see there.
>
> > Where could I get the use of an analyzer?
>
> > Thanks, Mel.
>
> Yikes, buy, don't rent.  We have a DigiView from Tech-Tools that we love.
> $500 athttp://www.tech-tools.com/dv_main.htm.
>
> This is phenominal logic analyzer.  Does data interpretation and lots more.

I don't have this unit myself, but one of my customers uses it and has
more than one.

http://www.pctestinstruments.com/

It seemed to work pretty well to me. $389

Rick
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