Doepfer

Is the red band on the power ribbon just a marker to help us?  Is the  
power ribbon functionally symmetrical, so that we can reverse the plug  
orientation on both ends and be alright?

Thanks,
Monroe

Nooooooo (sound of man falling off a cliff).

http://www.doepfer.de/a100_man/a100t_e.htm

Please read this page.

Tony

> To: Doepfer_a100@yahoogroups.com
> From: monroe.eskew@gmail.com
> Date: Tue, 5 Aug 2008 10:16:34 -0500
> Subject: [Doepfer_a100] red band orientation
> 
> Is the red band on the power ribbon just a marker to help us?  Is the  
> power ribbon functionally symmetrical, so that we can reverse the plug  
> orientation on both ends and be alright?
> 
> Thanks,
> Monroe
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 

_________________________________________________________________
Get more from your digital life.  Find out how.
http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008

[Non-text portions of this message have been removed]

In case you're in any doubt, I have a handful of spare Doepfer cable
that you can have for nothing.  just drop me a PM with your details.

Yours Aye

Stuadh 

--- In Doepfer_a100@yahoogroups.com, James Husted
<the_ersatz_planet@...> wrote:

>
> Technically speaking you can reverse the plug orientation ONLY if you  
> do on both ends and ONLY if you make sure on the 10-pin plugs that  
> the socket (the cable end) us lined up to the -12V pins and doesn't  
> over hang that end of the header at all. The cables are just cables -  
> no electronics involved. The cables use 2 wires for each voltage/gnd  
> connection. the 2 columns of the headers are the same for each row  
> (-12v, GND, +12v, +5v etc.) so should work even if only one column is  
> plugged in though that cuts down the current handling ability of the  
> cable. As you may notice the page referenced below does not mention  
> the red stripe at all but it does stress "Pay attention that applying  
> other than the described voltages or changing the polarity will  
> result in the module's instant destruction !" This will for sure  
> happen if the cable ends are nor oriented the same at both ends.  
> Doepfer has made this easy be printing the voltages next to the pins  
> on all the modules I remember. In practice you should make sure all  
> modules in your system have the same cable orientation and it it  
> would be a good idea to match the orientation of factory delivered  
> modules that have the cable attached already - just so you don't mess  
> up when you re-arrange them in the future (and you WILL re-arrange  
> them in the future!). A good arrangement would be to have the red  
> stripe always at the -12v pins that way the cable will be easy to use  
> on both 10 and 16 pin headers.
> 
> -James
> 
> 
> On Aug 5, 2008, at 8:43 AM, Anthony Rolando wrote:
> 
> >
> > Nooooooo (sound of man falling off a cliff).
> >
> > http://www.doepfer.de/a100_man/a100t_e.htm
> >
> > Please read this page.
> >
> > Tony
> >
> >> To: Doepfer_a100@yahoogroups.com
> >> From: monroe.eskew@...
> >> Date: Tue, 5 Aug 2008 10:16:34 -0500
> >> Subject: [Doepfer_a100] red band orientation
> >>
> >> Is the red band on the power ribbon just a marker to help us?  Is the
> >> power ribbon functionally symmetrical, so that we can reverse the  
> >> plug
> >> orientation on both ends and be alright?
> >>
> >> Thanks,
> >> Monroe
> >>
> >> ------------------------------------
> >>
> >> Yahoo! Groups Links
> >>
> >>
> >>
> >
> > _________________________________________________________________
> > Get more from your digital life.  Find out how.
> > http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008
> >
> > [Non-text portions of this message have been removed]
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>

I can't see evidence that there is something peculiar about where the  
red band is painted.  One has to get the right voltages to the right  
places, but can't one accomplish this by reversing the orientation of  
the plugs at BOTH ends simultaneously?  (The reason I ask is that I  
was sold a ribbon with the red band printed on the wrong side, and I  
have an ASys case which only allows one orientation going into the  
power board.)


On Aug 5, 2008, at 10:43 AM, Anthony Rolando wrote:

>
> Nooooooo (sound of man falling off a cliff).
>
> http://www.doepfer.de/a100_man/a100t_e.htm
>
> Please read this page.
>
> Tony
>
> > To: Doepfer_a100@yahoogroups.com
> > From: monroe.eskew@gmail.com
> > Date: Tue, 5 Aug 2008 10:16:34 -0500
> > Subject: [Doepfer_a100] red band orientation
> >
> > Is the red band on the power ribbon just a marker to help us? Is the
> > power ribbon functionally symmetrical, so that we can reverse the  
> plug
> > orientation on both ends and be alright?
> >
> > Thanks,
> > Monroe
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>
> __________________________________________________________
> Get more from your digital life. Find out how.
> http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008
>
> [Non-text portions of this message have been removed]
>
>
> 



[Non-text portions of this message have been removed]

Technically speaking you can reverse the plug orientation ONLY if you  
do on both ends and ONLY if you make sure on the 10-pin plugs that  
the socket (the cable end) us lined up to the -12V pins and doesn't  
over hang that end of the header at all. The cables are just cables -  
no electronics involved. The cables use 2 wires for each voltage/gnd  
connection. the 2 columns of the headers are the same for each row  
(-12v, GND, +12v, +5v etc.) so should work even if only one column is  
plugged in though that cuts down the current handling ability of the  
cable. As you may notice the page referenced below does not mention  
the red stripe at all but it does stress "Pay attention that applying  
other than the described voltages or changing the polarity will  
result in the module’s instant destruction !" This will for sure  
happen if the cable ends are nor oriented the same at both ends.  
Doepfer has made this easy be printing the voltages next to the pins  
on all the modules I remember. In practice you should make sure all  
modules in your system have the same cable orientation and it it  
would be a good idea to match the orientation of factory delivered  
modules that have the cable attached already - just so you don't mess  
up when you re-arrange them in the future (and you WILL re-arrange  
them in the future!). A good arrangement would be to have the red  
stripe always at the -12v pins that way the cable will be easy to use  
on both 10 and 16 pin headers.

-James

On Aug 5, 2008, at 8:43 AM, Anthony Rolando wrote:

>
> Nooooooo (sound of man falling off a cliff).
>
> http://www.doepfer.de/a100_man/a100t_e.htm
>
> Please read this page.
>
> Tony
>
>> To: Doepfer_a100@yahoogroups.com
>> From: monroe.eskew@gmail.com
>> Date: Tue, 5 Aug 2008 10:16:34 -0500
>> Subject: [Doepfer_a100] red band orientation
>>
>> Is the red band on the power ribbon just a marker to help us?  Is the
>> power ribbon functionally symmetrical, so that we can reverse the  
>> plug
>> orientation on both ends and be alright?
>>
>> Thanks,
>> Monroe
>>
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>
>
> _________________________________________________________________
> Get more from your digital life.  Find out how.
> http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008
>
> [Non-text portions of this message have been removed]
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Ok, I should have read your original question more closely. The minute I hear something about reversing power cables I get nervous...

Tony

> To: Doepfer_a100@yahoogroups.com
> From: monroe.eskew@gmail.com
> Date: Tue, 5 Aug 2008 11:15:11 -0500
> Subject: Re: [Doepfer_a100] red band orientation
> 
> I can't see evidence that there is something peculiar about where the  
> red band is painted.  One has to get the right voltages to the right  
> places, but can't one accomplish this by reversing the orientation of  
> the plugs at BOTH ends simultaneously?  (The reason I ask is that I  
> was sold a ribbon with the red band printed on the wrong side, and I  
> have an ASys case which only allows one orientation going into the  
> power board.)
> 
> 
> On Aug 5, 2008, at 10:43 AM, Anthony Rolando wrote:
> 
> >
> > Nooooooo (sound of man falling off a cliff).
> >
> > http://www.doepfer.de/a100_man/a100t_e.htm
> >
> > Please read this page.
> >
> > Tony
> >
> > > To: Doepfer_a100@yahoogroups.com
> > > From: monroe.eskew@gmail.com
> > > Date: Tue, 5 Aug 2008 10:16:34 -0500
> > > Subject: [Doepfer_a100] red band orientation
> > >
> > > Is the red band on the power ribbon just a marker to help us? Is the
> > > power ribbon functionally symmetrical, so that we can reverse the  
> > plug
> > > orientation on both ends and be alright?
> > >
> > > Thanks,
> > > Monroe
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> >
> > __________________________________________________________
> > Get more from your digital life. Find out how.
> > http://www.windowslive.com/default.html?ocid=TXT_TAGLM_WL_Home2_082008
> >
> > [Non-text portions of this message have been removed]
> >
> >
> > 
> 
> 
> 
> [Non-text portions of this message have been removed]
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 

_________________________________________________________________
Got Game? Win Prizes in the Windows Live Hotmail Mobile Summer Games Trivia Contest
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[Non-text portions of this message have been removed]

You are very correct - The AS system power supply headers are more  
different than just the keyed headers, the pin-out is different also  
- Big City sells adaptor cables to go from AS modules to Doepfer  
cases but don't know the abut the other way round. The AS site is  
pretty poor on the technical details. At least I can't find things  
like weather a module uses +5V or not on their site any where (other  
than "+5V used on digital modules). They show their power supply  
rails as being Rail 1=+12v, Rail 2=+5V and Rail 3= -12V. These are  
not in the same order as the doepfer -12v, GND, GND, +12V, +5  
arrangement of course - hence the adaptor cables.

-James

On Aug 5, 2008, at 9:15 AM, Monroe Eskew wrote:

> I can't see evidence that there is something peculiar about where the
> red band is painted.  One has to get the right voltages to the right
> places, but can't one accomplish this by reversing the orientation of
> the plugs at BOTH ends simultaneously?  (The reason I ask is that I
> was sold a ribbon with the red band printed on the wrong side, and I
> have an ASys case which only allows one orientation going into the
> power board.)
>

On Tue, Aug 5, 2008 at 9:15 AM, Monroe Eskew <monroe.eskew@gmail.com> wrote:
> I can't see evidence that there is something peculiar about where the
> red band is painted. One has to get the right voltages to the right
> places, but can't one accomplish this by reversing the orientation of
> the plugs at BOTH ends simultaneously?

Yes, though you'll want to double-check continuity to the appropriate
places before ever powering up a module on this cable, and it couldn't
hurt to mark the cable somehow on the module end so that you don't
accidentally forget that you did this at some point in the future and
fry something. In short, yeah, you could do this, but it greatly
increases the chances that you'll screw something up in the future.

-Brandon

The stripe is normally used to identify pin 1 and this is the way it should 
be used. However, on systems like Doepfer the only important point is that 
the stripe is orientated to the connector/board the same at both ends i.e. 
bottom-to-bottom (described way) or top-to-top.

Some systems like my Panther, however, use polarised connectors (the headers 
on my modules are boxed and orientated) and it is essential that pin 1 goes 
to the right spot and, theoretically, the strip is not important as long as 
pin 1 is connected to pin 1 and is installed in the right orientation.

So, the technically correct way is that the stripe should identify pin 1 on 
the connector and at both ends. If this is followed by everyone then you 
will not have problems installing power cables as long as you observe the 
orientation markings on the modules that do not use a polarised connector.

Best Regards

(Mr) Laurie Biddulph
Phone: +61 (0)2 4340 0938
Mobile: 0400 257 645

Elby Designs
ABN: 70 022 727 605
http://www.elby-designs.com

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----- Original Message ----- 

From: "Monroe Eskew" <monroe.eskew@gmail.com>
To: <Doepfer_a100@yahoogroups.com>
Sent: Wednesday, August 06, 2008 1:16 AM
Subject: [Doepfer_a100] red band orientation


> Is the red band on the power ribbon just a marker to help us?  Is the
> power ribbon functionally symmetrical, so that we can reverse the plug
> orientation on both ends and be alright?
>
> Thanks,
> Monroe
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

> You are very correct - The AS system power supply headers are more
> different than just the keyed headers, the pin-out is different also
> - Big City sells adaptor cables to go from AS modules to Doepfer
> cases but don't know the abut the other way round. The AS site is
> pretty poor on the technical details. At least I can't find things
> like weather a module uses +5V or not on their site any where (other
> than "+5V used on digital modules). They show their power supply
> rails as being Rail 1=+12v, Rail 2=+5V and Rail 3= -12V. These are
> not in the same order as the doepfer -12v, GND, GND, +12V, +5
> arrangement of course - hence the adaptor cables.
>
> -James

Analogue Haven has adapter boards available that can be used to connect Bob
William's AS modules to the A-100 bus (I know it as we manufacture these
adapters as a special design for AH).

The AS uses 16-pin IC connectors (like integrated circuits) with this pinout

GND	GND  (side with the IC marker)
GND	GND
+12V	+12V
+12V	+12V
+5V	+5V
+5V	+5V
-12V	-12V
-12V	-12V

So it's totally different from the A-100 bus which uses not only a different
type of connectors but has also a different sequence of the pin assignment:

GATE	GATE
CV	CV
+5V	+5V
+12V	+12V
GND	GND
GND	GND
GND	GND
-12V	-12V (colored wire of the ribbon cable)

Best wishes
Dieter Doepfer