Wiring DT40Pro's - Help Please

[andy_con]

big help needed on the dt40 psu

AC, AC, FG,

im in the UK

so do i put 240v to it???

cheers

[DZ]

big help needed on the dt40 psu

AC, AC, FG,

im in the UK

so do i put 240v to it???

cheers

I don't know what a typical line cord color code is in the UK, if its anything like what I'm use to seeing, you may have a black, white and green. If so, Black goes to one AC input, white goes to the other AC input and green goes to FG. If you have two blacks in your line cord then attach the other black to AC. Either way, green should be ground and will be attached to FG.

David

[andy_con]

I don't know what a typical line cord color code is in the UK, if its anything like what I'm use to seeing, you may have a black, white and green. If so, Black goes to one AC input, white goes to the other AC input and green goes to FG. If you have two blacks in your line cord then attach the other black to AC. Either way, green should be ground and will be attached to FG.

David

well in the UK we have + - and earth

so in order AC AC FG

what goes where

cheers mate

[DZ]

well in the UK we have + - and earth

so in order AC AC FG

what goes where

cheers mate

+ - is nomenclature that is used in DC. You will have AC coming out of the wall and most likely 220VAC. So on a line cord you will have 3 wires. One of them should be green in color. The green wire, which should be ground, connects to FG. The other two connect to AC. Most everywhere coming out of the wall are two "hots" both carying 110VAC out of phase giving 220VAC when measured between each other. Here in the US we have only one hot, a neutral and a ground. Even so, here in the US the hot and neutral attach to the AC inputs and ground goes to FG.

David

[andy_con]

+ - is nomenclature that is used in DC. You will have AC coming out of the wall and most likely 220VAC. So on a line cord you will have 3 wires. One of them should be green in color. The green wire, which should be ground, connects to FG. The other two connect to AC. Most everywhere coming out of the wall are two "hots" both carying 110VAC out of phase giving 220VAC when measured between each other. Here in the US we have only one hot, a neutral and a ground. Even so, here in the US the hot and neutral attach to the AC inputs and ground goes to FG.

David

yes there three wires comeing out + brown, - blue and ground green.

so green (ground) goes to FG

then + and - go to the two AC ??????????

that dont seem right

[DZ]

yes there three wires comeing out + brown, - blue and ground green.

so green (ground) goes to FG

then + and - go to the two AC ??????????

that dont seem right

andy_con, + and - has nothing to do with AC. What is it that you are looking at that is labeled + and -???

David

[andy_con]

andy_con, + and - has nothing to do with AC. What is it that you are looking at that is labeled + and -???

David

LOL sorry for being a pain

in the UK out mains power is + - and earth (ground)

the psu has AC AC FG V G V

so i put 240v + to AC, - to AC and then earth (ground) to FG

that correct???

[DZ]

LOL sorry for being a pain

in the UK out mains power is + - and earth (ground)

the psu has AC AC FG V G V

so i put 240v + to AC, - to AC and then earth (ground) to FG

that correct???

You scaring me with this + - business. Let me see if I can make a chart for you, hopefully this will come out ok:

AC.....AC.......FG.........V............G..............V
Hot | Hot | Ground | +VDC | DC Common | -VDC
This comes from.....|...These feed your amps.
your wall outlet ....|
If you say ............|
Hot= + and - then..|
so be it!................|

David

[andy_con]

You scaring me with this + - business. Let me see if I can make a chart for you, hopefully this will come out ok:

AC.....AC.......FG.........V............G..............V
Hot | Hot | Ground | +VDC | DC Common | -VDC
This comes from.....|...These feed your amps.
your wall outlet ....|
If you say ............|
Hot= + and - then..|
so be it!................|

David

LOL its ok i got it working thanks

but next problem -

the dt40 are playing things at an angle?? check out this vid
im also not very impessed with them, they seem to struggle to play simple things and they squel alot? this normal??

http://s80.photobucket.com/albums/j1...2062007063.flv

[DZ]

LOL its ok i got it working thanks

but next problem -

the dt40 are playing things at an angle?? check out this vid
im also not very impessed with them, they seem to struggle to play simple things and they squel alot? this normal??

http://s80.photobucket.com/albums/j1...2062007063.flv

The squealling is a function of whatever is being displayed. You can hook up a stereo amplifier to a set of galvo's and listen to music. Regarding the angle issue, Could it be that your software is displaying it to look like that? Try doing a rotate and see what happens. If you can, in your software, do a rotate about X, then a rotate about Y and then rotate about Z and tell me what it looks like. When you say its having trouble displaying simple things, not sure what you mean by that. If the image doesn't look right you may need to optimize it a bit by moving around blanking points or anchor points. Or simply slow down the draw speed for that frame. Just because they are DT-40's and are capable of running at 40K or higher, doesn't mean you should. You should always have your dac set for 30K or less. When I do beam shows I run my DT-40's at 12K or less. When I do graphic shows I run them at 30K, if I do anything raster I usually ramp them up to around 80K. Take a look at some of the video's I've posted, they were all produced with the orginal DT-40's, not the DT-40 pro's. With exception to the halloween show, that was done with EMS-3080 scanners. To be painfully honest though, to get the best performance out of a set of scanners means getting pangolin, IMHO.

David