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 Forum index » DIY Hardware and Software » Thomas Henry designs
Connectors on XR2206 PCB
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infraxpert



Joined: Feb 05, 2014
Posts: 9
Location: Denmark

PostPosted: Sun Jul 06, 2014 4:22 am    Post subject: Connectors on XR2206 PCB
Subject description: What hides behind the connectorcode on the XR2206 PCB from MagicSmoke
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Does anybody know how to translate the different CN-codes into pots and plugs on the Magic Smoke PCB for the TH-102/XR2206 VCO?

If anybody have a connection manual it would be a great help.
Thanks
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Danno Gee Ray



Joined: Sep 25, 2005
Posts: 1342
Location: Telford, PA USA

PostPosted: Sun Jul 06, 2014 12:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

I would recommend picking up a copy of the book an-analog-synthesizer-for-the-21st-century.
at this link http://www.lulu.com/shop/thomas-henry/an-analog-synthesizer-for-the-21st-century/paperback/product-20192513.html;jsessionid=8C896E5BB75FCE5A1BAF4A5C1BD0010B. The schematics are found there.
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infraxpert



Joined: Feb 05, 2014
Posts: 9
Location: Denmark

PostPosted: Sun Jul 06, 2014 3:04 pm    Post subject: Reply with quote  Mark this post and the followings unread

Danno Gee Ray wrote:
I would recommend picking up a copy of the book an-analog-synthesizer-for-the-21st-century.
at this link http://www.lulu.com/shop/thomas-henry/an-analog-synthesizer-for-the-21st-century/paperback/product-20192513.html;jsessionid=8C896E5BB75FCE5A1BAF4A5C1BD0010B. The schematics are found there.

I already have the book but it does not show anything about the PCB from magic smoke. I also have the book about Thomas Henry VCOs and that one is even more confusing since it does not have one final layout for the VCO.
I just wonder course magic smoke refer to this forum for further documentation.
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Rivelen



Joined: Mar 02, 2007
Posts: 30
Location: France
Audio files: 3
G2 patch files: 12

PostPosted: Sun Jul 06, 2014 10:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

so you did not received the wiring guide from Magic Smoke ?
-> ok, sent to you by pm.
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rjd2



Joined: Sep 02, 2007
Posts: 235
Location: philly

PostPosted: Sun Jul 27, 2014 10:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Good friend! Would you mind DMing me the connection notes please? I too cannot translate the cn codes on the pcb... Thanks!
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ungleichklang



Joined: Dec 03, 2011
Posts: 82
Location: East-Belgium

PostPosted: Sun Jul 27, 2014 2:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

okido, then I post my question here too ... in my wiring doc the TRI-SI DPDT switch AND the Hi-Lo siwtch is wired to CN 103 ..

is it possible that there is a fault and the DPDT TRI-SI Switch is wired to CN13 and CN14 ???


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elmegil



Joined: Mar 20, 2012
Posts: 1476
Location: Chicago
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PostPosted: Sun Jul 27, 2014 8:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

That is correct. Here are some notes I have, not sure their exact provenance, but I believe they are from Tim, and they apply here:

Quote:

If you're looking for a little more info on the board image I posted, here are the connector functions:

Left Edge:
CN7 Linear CV In jack
CN8 Linear CV attenuator
CN1 Coarse Tune
CN2 Fine Tune
CN101 FM 2 In jack
CN102 FM 2 attenuator

Top Edge:
CN105 Square Suboctave out
CN110 Pulse Suboctave out
CN108 PWM In attenuator
CN107 PWM In jack
CN106 PWM Initial
CN109 Pulse Out
CN104 Rampoid Out
CN15 Tri - Ramp / Sine Out
CN16 Square Out

Bottom Edge:
CN4 1V/Octave CV in (switching jack)
CN3 Keyboard CV in (from internal bus)
CN6 FM 1 In attenuator
CN5 FM 1 In jack
CN9 Skew Initial
CN10 Skew CN In jack
CN11 Skew attenuator
CN103 Hi / Low cap switch
CN12 Sync In

Middle:
CN13 S1a (Tri - Ramp / Sine Select switch)
CN14 S1b (Tri - Ramp / Sine Select switch)

Right Edge:
CN17 DC Power In (4 pin .156" Blacet style)
CN18 & CN19 DC Power In (6 pin .100")

Whew! Lotsa connectors. But we do have
* Tri -Ramp / Sine Out
* Pulse Out (derived from Tri - Ramp)
* Suboctave (derived from Pulse)
* Square Out
* Suboctave (derived from Square)
* Rampoid Out

* Two Expo FM Inputs with attenuators
* Linear CV Input with attenuator
* 1V/Octave CV Input

* Tri - Ramp Skew CV Input with attenuator
* PWM Input with attenuator

* Sync Input
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ungleichklang



Joined: Dec 03, 2011
Posts: 82
Location: East-Belgium

PostPosted: Mon Jul 28, 2014 4:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

I reread the doc I got and did my wiring today .. something is wrong .. I just hear noise .. but anyway ..

my doc says

CN01 is fine and CN02 is coarse .. but from listening to the noise that must be wrong in my doc ..

and I do not understand the CN4 and CN3 connection ....
CN4 is a switched jack .. o.k. .. I did that
but how or where do I connect CN3?? Or do I not need it if I have no internal keyboard connected??

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elmegil



Joined: Mar 20, 2012
Posts: 1476
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PostPosted: Mon Jul 28, 2014 7:47 pm    Post subject: Reply with quote  Mark this post and the followings unread

ungleichklang wrote:

but how or where do I connect CN3?? Or do I not need it if I have no internal keyboard connected??


That is exactly right. I am traveling and away from my el Cerrito, so I can't say specifically, but I do recall there was more than one connector that I opted not to use, and the internal keyboard one was definitely one of those.

As to the cause of noise, unfortunately I'm not sure what to suggest there. When I am back home this weekend, if you're still having issues I can measure voltages on mine and give you some ideas.
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