Stereo Scoundcard Oscilloscope

[Scott Smith]

Windows Stereo Scoundcard Oscilloscope, Mutiple Inputs Modes, Mixer Controls, Single/Dual Trace, Man/AutoGain, Color Settings, Trigger Settings, AC/DC, Hortz/Vert Settings, Revearsable Chan Input, DB/Volt Input, Plus many More, Using the sound cards line input jacks with IC freq dividers, scope may be used as a regular Low Freq Oscilloscope. Sent email attached to pAypal buyers for instant delivery, Low Cost $9.95, Link provided for buyers via email, email me for GUI image, scott93727@aol.com..

 

[RobertMacy]

On Sat, 26 Apr 2014 08:30:38 -0700, Scott Smith <scott93727@gmail.com>
wrote:

Windows Stereo Scoundcard Oscilloscope, Mutiple Inputs Modes, Mixer
Controls, Single/Dual Trace, Man/AutoGain, Color Settings, Trigger
Settings, AC/DC, Hortz/Vert Settings, Revearsable Chan Input, DB/Volt
Input, Plus many More, Using the sound cards line input jacks with IC
freq dividers, scope may be used as a regular Low Freq Oscilloscope.
Sent email attached to pAypal buyers for instant delivery, Low Cost
$9.95, Link provided for buyers via email, email me for GUI image,
scott93727@aol.com..

Do you compare your GUI and performance to Bob Masta's Daqarta?


[note, not associated with, nor gain benefit from]

Bob Masta
DAQARTA v7.50
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Scope, Spectrum, Spectrogram, Sound Level Meter
Frequency Counter, Pitch Track, Pitch-to-MIDI
FREE Signal Generator, DaqMusiq generator
Science with your sound card!

 

[c4urs11]

On Sat, 26 Apr 2014 08:51:14 -0700, RobertMacy wrote:

> Do you compare your GUI and performance to Bob Masta's Daqarta?

The one interesting feature is "AC/DC".
Beats everything.

Cheers!

 

[Jon Danniken]

On 04/26/2014 11:26 AM, c4urs11 wrote:

On Sat, 26 Apr 2014 08:51:14 -0700, RobertMacy wrote:

Do you compare your GUI and performance to Bob Masta's Daqarta?

The one interesting feature is "AC/DC".
Beats everything.

The other nice feature is that Bob doesn't SPAM usenet, unlike Scott who
has been a busy little spammer over the last week, in multiple groups.

Jon

 

[RobertMacy]

On Sat, 26 Apr 2014 11:26:03 -0700, c4urs11 <c4urs11@domain.hidden> wrote:

On Sat, 26 Apr 2014 08:51:14 -0700, RobertMacy wrote:

Do you compare your GUI and performance to Bob Masta's Daqarta?

The one interesting feature is "AC/DC".
Beats everything.

Cheers!

ok, I'll bite. How do you do AC/DC on a soundcard for $9.95?

 

[c4urs11]

On Sat, 26 Apr 2014 20:56:07 -0700, RobertMacy wrote:

The one interesting feature is "AC/DC". Beats everything.

ok, I'll bite. How do you do AC/DC on a soundcard for $9.95?

That was a tongue-in-cheek comment. Soundcards don't process DC.

http://hardandsoftware.mvps.org/sound_card.htm

Cheers!

 

[Maynard A. Philbrook Jr.]

In article <op.xeyijtri2cx0wh@ajm>, robert.a.macy@gmail.com says...

On Sat, 26 Apr 2014 11:26:03 -0700, c4urs11 <c4urs11@domain.hidden> wrote:

On Sat, 26 Apr 2014 08:51:14 -0700, RobertMacy wrote:

Do you compare your GUI and performance to Bob Masta's Daqarta?

The one interesting feature is "AC/DC".
Beats everything.

Cheers!

ok, I'll bite. How do you do AC/DC on a soundcard for $9.95?

Method 1.
DealExtreme was selling USB sound dongles for under 3 bucks, jump
the caps and set the offset in software..

Method 2. Which is what I have done before.

Data flip flop with Q/ back to D via a R divider. Sound output on
one of the channels plus Zener shunt on the clk input for the PWM set
at some high freq rate. Perform Pm detection...

The input is at the Data input network, you are simply modulating the
PWM and output (Q) is doing input to the sound card. etc..

I made a Data logger using method two, for monitoring DC and
variations. Of course, I alway wrote the software for it...

For any one thinking about doing this via a D-FF, you may want to
consider using a comparator at the D input, the threshold tends to
drift a bit over temperature ranges..

Jamie

 

[dave]

On 04/27/2014 09:43 AM, Maynard A. Philbrook Jr. wrote:

In article <op.xeyijtri2cx0wh@ajm>, robert.a.macy@gmail.com says...

On Sat, 26 Apr 2014 11:26:03 -0700, c4urs11 <c4urs11@domain.hidden> wrote:

On Sat, 26 Apr 2014 08:51:14 -0700, RobertMacy wrote:

Do you compare your GUI and performance to Bob Masta's Daqarta?

The one interesting feature is "AC/DC".
Beats everything.

Cheers!

ok, I'll bite. How do you do AC/DC on a soundcard for $9.95?

Method 1.
DealExtreme was selling USB sound dongles for under 3 bucks, jump
the caps and set the offset in software..

Method 2. Which is what I have done before.

Data flip flop with Q/ back to D via a R divider. Sound output on
one of the channels plus Zener shunt on the clk input for the PWM set
at some high freq rate. Perform Pm detection...

The input is at the Data input network, you are simply modulating the
PWM and output (Q) is doing input to the sound card. etc..

I made a Data logger using method two, for monitoring DC and
variations. Of course, I alway wrote the software for it...

For any one thinking about doing this via a D-FF, you may want to
consider using a comparator at the D input, the threshold tends to
drift a bit over temperature ranges..

Jamie

https://duckduckgo.com/?q=sound%20card%20oscilloscope%20quadrature%20dongle&kl=us-en&kp=-1&kd=-1&kn=1

 

[Jeff Liebermann]

On 27 Apr 2014 11:12:50 GMT, c4urs11 <c4urs11@domain.hidden> wrote:

That was a tongue-in-cheek comment. Soundcards don't process DC.
http://hardandsoftware.mvps.org/sound_card.htm
Cheers!

My (modified) sound card works to DC:
<http://www.whence.com/soundcard-dc-dac/>
<http://www.daqarta.com/dw_ggnn.htm>
<http://makezine.com/2008/05/22/how-to-modify-a-pc-sound/>

Or, build a chopper amp:
<http://lea.hamradio.si/~s57uuu/scdsp/CheapChop/cheapchop.htm>
(I haven't tried this).
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

 

[c4urs11]

On Sun, 27 Apr 2014 11:43:56 -0700, Jeff Liebermann wrote:

My (modified) sound card works to DC:
http://www.whence.com/soundcard-dc-dac/
http://www.daqarta.com/dw_ggnn.htm
http://makezine.com/2008/05/22/how-to-modify-a-pc-sound/

Using a USB soundcard with modifications looks tempting.
Just needs a bit of attention, as there is no protection against
negative input levels.
Can be nice to have around for monitoring logic signals.

Cheers!

 

Do you all really believe there is a DC blocking capacitor INSIDE the soundchip ?

Really ?

 

The point/question kinda is, if you fed the pin of the IC directly, would it register DC ? Possibly not, it may be designed to ignore DC, software wise or otherwise.

IF however, it is just a matter of a cap, you could concievable jump it out.

It may or may not work, that is the question, would it ?

 

[dave]

On 04/28/2014 12:18 AM, jurb6006@gmail.com wrote:

Do you all really believe there is a DC blocking capacitor INSIDE the soundchip ?

Really ?

I don't. I can repair dual rail guitar amps and get 0.0 VDC at point X.

 

[Maynard A. Philbrook Jr.]

In article <9e3eae80-89bc-40fd-ba47-e68693270545@googlegroups.com>,
jurb6006@gmail.com says...

The point/question kinda is, if you fed the pin of the IC directly, would it register DC ? Possibly not, it may be designed to ignore DC, software wise or otherwise.

IF however, it is just a matter of a cap, you could concievable jump it out.

It may or may not work, that is the question, would it ?

Most if not all have a cap on the input. The chip does not have a
blocking cap! That is blatantly obvious.. It's the circuit that
leads up to the input of the IC.

And the reason you ask for this? couple of reasons, first the
IC's input for the most part can't sit at 0 volts, unless you have
a high end unit using dual rails, and I don't see that happening.

So you need a DC blocking cap for that any way, but another very
important reason there is a DC blocker is due to the fact that many
sound cards have a low current DC present at the tip of the input so
that you can power up a small microphone and that simply gets modulated
via this DC current. So you can see the reason the CAP would be needed
here too.

When removing or jumping the cap you need to make previsions to handle
input offset problems and the DC supply for the external mic.

Jamie

 

That's what I figured.

If it had a JFET input though it technically could...