[sdiy] Interesting matrix

Simon simon at austarmetro.com.au
Tue Oct 22 19:05:28 CEST 2002


>                     well I would guess it is either using a regular AD75019
>    chip with additional buffers or the more expensive (250 quid?)  version
>with internal buffering in the


 From the prelim. PDF manual...
>The switcher IC is expensive.Incorrect installation and use of the 
>patcher can result
>in damage to the IC and replacement is expensive and at your cost!
>Do not exceed the power supply voltages of +/-12 and 5V.
>Do not plug the power cable in incorrectly.
>The voltage range of signals that can be patch is +/-12V.Do not exceed.


They are stressing that the IC is expensive, so would that mean it's 
the more expensive version with internal buffering?

I guess it would be easy to send more than 12V into the matrix, and 
blow the IC. Would some sort of voltage protection on each input be 
better/possible?


After looking at the photo on the website, I thought that the patch 
matrix was made up of illuminated switches, so you could just push 
onto a patch 'pin' point to change it, but it seems they are just 
leds to display patch points, and that changing patch 'pins' is 
achieved through different modes and just four buttons.


Simon
Canberra
AUSTRALIA



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