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-   -   Low Frequency Analog and Digital Signal Generator (http://www.diyaudio.com/forums/equipment-tools/252191-low-frequency-analog-digital-signal-generator.html)

altor 3rd March 2014 07:44 AM

Low Frequency Analog and Digital Signal Test Generator
 
1 Attachment(s)
Hello friends.
Maybe this will be interesting for somebody:
http://www.altor.co/products/jkgen

Max Headroom 3rd March 2014 12:57 PM

Any costings ?.

Dan.

altor 3rd March 2014 01:23 PM

Quote:

Originally Posted by Max Headroom (Post 3840469)
Any costings ?.

Dan.

Contact us from the website or private message here.

altor 4th March 2014 02:59 PM

I put the prices at the web site.

Max Headroom 4th March 2014 09:28 PM

Peer Review....
 
That's better ;).
$520.00 might be a bit pricey for some around here, but not all.
Send a copy to RNMarsh for evaluation.
Richard has an extensive range of high performance test gear that would be useful to verify/categorise the performance of your device.

With his seal of approval you would likely gain much interest in your product.

Dan.

Your website is not complete...not good for business.

1audio 4th March 2014 10:11 PM

I think its interesting. Especially the ability to generate DSD test files. I would like more DSD test files than are listed but they cover most of the requirements. Getting DSD into external devices is the hard part. Most only support USB. A few support SPDIF. I2S is kind of a misnomer for DSD since DSD would be L, R & CLK which don't match I2S. Some devices change their inputs and others have separate inputs for DSD.

Another useful feature would be to be able to add jitter to the data stream to test for jitter reduction at the receiver/audio output. In this context a Dunn J-Test signal would be great.

altor 4th March 2014 10:18 PM

1 Attachment(s)
Quote:

Originally Posted by Max Headroom (Post 3842325)
That's better ;).
$520.00 might be a bit pricey for some around here, but not all.

There is an option, to buy it for $180.

Quote:

Send a copy to RNMarsh for evaluation.
Richard has an extensive range of high performance test gear that would be useful to verify/categorise the performance of your device.

With his seal of approval you would likely gain much interest in your product.

Dan.
I'll think.

Quote:

Your website is not complete...not good for business.
I just make it as a documentation and firmware upgrade storage.

BTW, I put a CAD image to the 1st message, and can't edit it. So, here is a real device's image:

gmphadte 5th March 2014 03:24 AM

I think the Left channel is always drawn on top, atleast on schematics. Don't know about RCAs...

Gajanan Phadte

altor 5th March 2014 05:04 AM

Quote:

Originally Posted by 1audio (Post 3842365)
I think its interesting. Especially the ability to generate DSD test files. I would like more DSD test files than are listed but they cover most of the requirements. Getting DSD into external devices is the hard part. Most only support USB. A few support SPDIF. I2S is kind of a misnomer for DSD since DSD would be L, R & CLK which don't match I2S. Some devices change their inputs and others have separate inputs for DSD.

DSD Bus and I2S But shares the same output connector's pins:
WCLK = L
SDATA = R
BCLK = CLK

Quote:

Another useful feature would be to be able to add jitter to the data stream to test for jitter reduction at the receiver/audio output. In this context a Dunn J-Test signal would be great.
In the development.

Device's firmware is easy upgradable from the USB-stick (disk on key)

altor 5th March 2014 05:15 AM

Quote:

Originally Posted by gmphadte (Post 3842643)
I think the Left channel is always drawn on top, atleast on schematics. Don't know about RCAs...

Gajanan Phadte

It is not so important, in normal operation both channels are the same.
User can select between in-phase channels (L+R), out of phase (L-R), one channel (L or R) or bot mute.

I implement out of phase signal when I prototyping tube push-pull output stage.

BTW, I'm also have some external accessories to the generator:
- comparator, to get the square wave with 500v/us rise/down time
- 2CH high voltage amplifier (200v p-p) - for tube circuits development.

I do not have a plans to manufacture these accessories , but I can provide the empty PCB for DIY, as a gift with generator.
(this time there is no PCB for high voltage amp, I make it on a breadboard, but will be...)


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