[AG-TECH] Old documentation missing?

Robert Olson olson at mcs.anl.gov
Fri Sep 30 12:22:30 CDT 2005

You can get by by wiring the unbalanced output from PC directly to  
the balanced input by taking the signal from PC and going to +  on  
gentner. Ground from PC goes to - and ground on gentner.

To go the other way, wire the gentner + to PC signal, and ground to  
ground, leaving gentner - floating.

See also


You'll have a roughly 10dB signal difference; when I've set this up  
in the past I made that adjustment on the gentner input and output  
attached that way, so that the levels elsewhere in the system match.


On Sep 30, 2005, at 11:16 AM, Jeremy Mann wrote:

> Cindy Sievers said:
>> Hi Jeremy,
>> That device is called an ATI Matchmaker MM100, they are hard to find
>> anymore.....do a google search on them, you might be able to locate
>> one....here's where we  found
>> one:  http://www.atiguys.com/?fa=search&text=mm100
>> The document Jennifer pointed you to is the doc I was thinking  
>> of....but I
>> know there is one that has an up close image of the phoenix plug
>> conversion......I can't find that one, but I have a hard copy of  
>> images if
>> you need them....
> Thanks Cindy. I found the answer I was looking for. I think the  
> problem
> with the levels is because the 1/8" connections are unbalanced. I  
> found an
> MM100 online but its *gasp* $429! I will be making a trip to Radio  
> Shack
> this weekend to see if I can build something for less money.
> -- 
> Jeremy Mann
> jeremy at biochem.uthscsa.edu
> University of Texas Health Science Center
> Bioinformatics Core Facility
> http://www.bioinformatics.uthscsa.edu
> Phone: (210) 567-2672

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