chrisprescott Posted March 21, 2011 Share Posted March 21, 2011 Hi All, Does anybody have a circuit diagram for the original Act6 dimmers? The units I have are on the D54 protocol and I was hoping to convert them back to 0-10 for use with a demux. However after Strand was carved up their archive only seems to go back to 1993 and there is no info on strand archive. Any help would be appreciated :-) Cheers, Chris Link to comment Share on other sites More sharing options...
Seano Posted March 21, 2011 Share Posted March 21, 2011 Can't help with the circuit diagram I'm afraid, just wanted to give you a quick heads up that when you do convert them to accept an analogue input it'll most likely have to be -10v rather than +10v.(You probably already knew that.) Link to comment Share on other sites More sharing options...
ianknight Posted March 21, 2011 Share Posted March 21, 2011 From memory - the D54 card is just plugged on to the mainboard using the same connector you would use to plug in a DMX card. If you're careful taking off one of the side cheeks of the rack - you should see where it's plugged in. Depending on the vintage of the ACT6 - it may have an auto sensing input that will take pos or neg control signals, the desk supply from the rack however will be negative so take care to isolate that on any other desks or demux's you plug in! Link to comment Share on other sites More sharing options...
chrisprescott Posted March 21, 2011 Author Share Posted March 21, 2011 From memory - the D54 card is just plugged on to the mainboard using the same connector you would use to plug in a DMX card. If you're careful taking off one of the side cheeks of the rack - you should see where it's plugged in. Depending on the vintage of the ACT6 - it may have an auto sensing input that will take pos or neg control signals, the desk supply from the rack however will be negative so take care to isolate that on any other desks or demux's you plug in! I have the act6 apart and indeed the interface board does plug on to the motherboard. I am looking for the pin out of this connection on the motherboard circuit diagram so that I can wire the 0-10 in. If all else fails experimentation will be required however I was hoping to avoid that if any one had a copy. Link to comment Share on other sites More sharing options...
gyro_gearloose Posted March 21, 2011 Share Posted March 21, 2011 Would it not be easier to use an external DMX to D54 converter? We've got which we used to use for our Strand Permus dimmers. Link to comment Share on other sites More sharing options...
paulears Posted March 21, 2011 Share Posted March 21, 2011 I have one too, but they are really expensive - and quite rare now. Link to comment Share on other sites More sharing options...
Kazeja Posted March 22, 2011 Share Posted March 22, 2011 I don't remember any of the older ACT6s NOT having an 8 way analogue input on the front. But then that could just be my memory. Can you advise of either the PCB number or REF number on the motherboard? K :) Link to comment Share on other sites More sharing options...
DrV Posted March 22, 2011 Share Posted March 22, 2011 I've got a note in my Act6 file which seems to list the pinout of a 10 way connector as follows:-1. -15v2. 0v3-8. Channels9. +1510. Frame gnd I don't know what it relates to but if you find a 10 way connector taking the signal from your D54 board to the main board then I'm guessing that these are the pinouts. Dave Link to comment Share on other sites More sharing options...
chrisprescott Posted March 22, 2011 Author Share Posted March 22, 2011 I've got a note in my Act6 file which seems to list the pinout of a 10 way connector as follows:-1. -15v2. 0v3-8. Channels9. +1510. Frame gnd I don't know what it relates to but if you find a 10 way connector taking the signal from your D54 board to the main board then I'm guessing that these are the pinouts. Dave That sounds quite likely to be the plug on the motherboard will give it a go! Many thanks! Link to comment Share on other sites More sharing options...
Kazeja Posted March 22, 2011 Share Posted March 22, 2011 I don't remember any of the older ACT6s NOT having an 8 way analogue input on the front. But then that could just be my memory. K :) Yup, it is my memory. Managed to find an old fader card and it looks like there is a resistor network to change the -10v to -5v (full) by the time it gets to the 10 way connector on the motherboard. K :) Link to comment Share on other sites More sharing options...
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