[Test-Equipment] Re: XY-recorder = Test-Equipment digest, Vol 1 #148 - 4 msgs

Mon, 26 Aug 2002 22:24:22 +1000

One of the least expensive XY-interfaces is the Softmark
Digital Oscilloscope, A$85 (about US $ 45). It connects
via printer port. Windows 95/98/2000 software is included.
The documents I have at hand indicate 50 ns per division 
fastest time base, but no max. sampling speed. I think it
was 20 MHz, but may be less. No XY-mode is indicated, but 
again, I think it has. Please check.

See: http://www.ar.com.au/~softmark/page30.html

They also have Four Channel USB Voltmeter, with 2.5 us
conversion speed:

http://www.ar.com.au/~softmark/page39.html

I have a Direct Synthesis Audio (up to 64 kHz) Generator
from this company. It has been OK for several years.
The designs are not too robust, there could be over voltage
protection, etc., but these things work well for a carefull
amateur.

An alternative is to modulate about 1 kHz audio with 
the X- and Y-voltages and use ordinary sound card with free
sound card instrumentation software, like Oscilloscope 2.51 
from http://polly.phys.msu.su/~zeld/oscill.html or
Osci from http://www.sumuller.de/audiotester (Silicon Chip,
Aug. 2002, p. 12 and p. 58-67)

Sakari, VK2XIN

> Message: 2
> Date: Sat, 24 Aug 2002 20:01:17 +0100
> To: "Chris van Lint" <[email protected]>,
>         "test equipment mailing list" <[email protected]>
> From: Marco Bruno <[email protected]>
> Subject: Re: [Test-Equipment] XY recorder
> 
> At 02.15 24/08/02, you wrote:
> >I have several pieces of equipment, which provide an output to a XY
> >recorder.  I do not particularly want to get a xy recorder due to space
> >restrictions and the problem of getting plotting pens.  I wonder whether
> >anyone is aware of a PC card and corresponding software, which would allow
> >the output to be printed through a PC and the printer connected to it.
> >
> >Chris van Lint
> Hi Chris,
> 
> many cheap PC digital 'scopes support X-Y mode of operation, or have an
> "event recorder" mode in which the inpus signal is sampled quite slowly
> (typically at 50sample/s max) and set to PC for storage, so that the record
> lenght is not a problem. In this case the output file is a .TXT and may be
> read (and plotted) with Excel.
> 
> One for all: Velleman PCS500 or PCS100. They are external scopes interfaced
> to the parallel port. Probably other brand do similar things.
> 
> 73 - Marco IK1ODO
> 
> Torino, Italy
> 
> (to Gianfranco, ciao!)
> 
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