Doepfer

Regret to say Philip Rees stopped trading years ago. I still have one of their MIDI devices but recently changed over to MUTU.


 
http://www.wizardwoodcraft.co.uk/
 
Norfolk UK
 

From: achtung_999 <heinrich.himmelwasser@gmail.com>
>To: Doepfer_a100@yahoogroups.com 
>Sent: Tuesday, 1 January 2013, 9:37
>Subject: Re: [Doepfer_a100] Question about daisy-chain of MIDI modules
>
>What you want is a Midi Thru connector. As I can see both the 190-2 and
>190-3 don't have a Thru connector.
>Best thing you can do is buy an active midi thru box like a Philip Rees or
>so. http://www.philrees.co.uk/products/thruunit.htm
>
>
>
>On Tue, Jan 1, 2013 at 1:32 AM, David Kaiser <dkaiser@cdk.com> wrote:
>
>> **
>>
>>
>> I have a A-190-3 USB/Midi to CV interface
>> (http://www.doepfer.de/a1903.htm), and recently picked up a A-190-2 Midi
>> to CV interface (http://www.doepfer.de/a1902.htm) as well.
>>
>> I'm hoping to daisy-chain the serial MIDI data between the two modules,
>> so I can use one MIDI (or USB) cable to my rack, train the 190-3 for one
>> MIDI channel, and train the 190-2 for another MIDI channel, but only use
>> a single MIDI cable as input to my rack for both modules.
>>
>> The Doepfer web site offers an 'excerpt' or single-page of the A-190-3
>> manual (the "p13" PDF). It has two "jumpers" (dual pins), JP5 for MIDI
>> OUT, and JP6 for MIDI In. And it looks that a 2-wire cable can be used
>> for serial transfer like MIDI.
>>
>> In the PDF for the A-190-2, there is one jumper set, JP5, with only two
>> pins. It is labeled for both MIDI IN and MIDI OUT.
>>
>> I'm assuming the serial data used in both devices is raw MIDI
>> (transmit/receive) as you would see through signal analysis of a MIDI
>> cable.
>>
>> Is there a recommended approach to use JP5 (MIDI OUT) from the A-190-3
>> and lead it to only one pin of JP5 on the A-190-2 for MIDI IN purposes?
>>
>> In the A-190-3 PDF
>> (http://www.doepfer.de/a100_man/A190_3_Manual_p13.pdf) one pin of each
>> JP5 and JP6 is marked with a 'T' symbol, and this pin is soldered to the
>> ground plane on the circuit board.
>>
>> Does the A-190-3 module tie the 'T'-marked pins of JP5/JP6 to frame
>> ground through the A-100 System cable?
>>
>> Is the frame ground how to make up for the lack of the second wire on
>> the A-190-2?
>>
>> I am going to try doing a one-wire daisy chain between the A-190-3 out
>> to the A-190-2. Will it work? Has anyone confirmed this?
>>
>> Thanks for any help, and have a Happy New Year!
>>
>> David
>>
>>  
>>
>
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