Pin Layout for "cable connector"

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303trancer
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Post by 303trancer »

I'm not shure if this is the wright place to ask... I bought a power pulsar with z-link and have one analogue (cinch) output dead. I'm looking for the pin-layout so I can check the kcables with a multimeter before thinking of a defective output from the card itself...
Could it be a setup prob? It's defintely not my connection cable to the amplifier. When I disconnect this cable from the PowerPulsar and toucht the left and right connectors, I hear both channels make some noise...
The z-link PCB is correctly attached.
blazesboylan
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Post by blazesboylan »

Have you tested the cable (PPulsar -> amp) for continuity? You can do it with the multimeter, although I'd recommend picking up a cable tester -- Behringer makes a cheap one (~ $70 Canadian) that I've been quite happy with.

Not sure which pinout your're looking for exactly... Do you mean the RCA cable "pinout"?

Try sending a sine wave signal out from the PowerPulsar (using the Control Room module) and connect the 2 RCA cables to the card. Check voltage level coming out of each cable (black -> outside ring of each RCA cable, red -> pin). Make sure meter is set to measure AC.

If there is 0 (or variable) voltage on either of the RCA connectors then you have either a problem in your PowerPulsar card or (more likely) a bad cable.

Make sure the fanout connector that attaches to the PowerPulsar is screwed in tight, too.

Good luck 303trancer!

Johann
303trancer
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Post by 303trancer »

Hi Johann,

Thanks for the answer. I asked Creamware support for the pin layout and Jens answered after one day. I received the requested pin layout from the cable connector and found that there was one channel without a signal path. I opened the connector and found the problem: One detached cable. I soldered it back on the right position and now both left and richt channels are working :wink:
Very fast response from the guy (Jens) from Creamware! l
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astroman
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Post by astroman »

nice to read you got it working again and that support is back to what it's supposed to :smile:
must be something in the air - a couple of days back one of my monitors died (Roland DS30). Needless to mention they were just out of warranty, horror started to creep up if one of the 'special' ICs was affected, but well, the culprit was a stabilizing rectifier (40 cent).
Unfortunately I started from the output stage backwards and since this tiny something was located in the PSU it happened to be one of the last parts checked :roll:

As Johann already mentioned - a little familiarity with the soldering iron pays off greately :grin:

cheers, Tom
ps: the amp stages of the Rolands are pretty good, but the PSU isn't that bright.
hubird

Post by hubird »

@ 303trancer: Image

@ Astro: Image
blazesboylan
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Post by blazesboylan »

Aaaah I completely misunderstood what you were looking for 303trancer. It never occurred to me that the fanout connector thingy itself is worth checking during a troubleshoot... Good to know! :cool:

Tom -- actually I disagree. A lot of familiarity with a soldering iron pays off greatly. But a little... Well, let's just say some of my solder jobs wouldn't pay minimum wage. I am the world's worst solderer. I am, fortunately, very handy with a file... :wink:

Nice job on the Roland! Meticulous work (almost) always pays greatly.

Cheers,

Johann
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astroman
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Post by astroman »

tnx Johann, but it's not a big challenge if you have the other monitor to compare measurements :wink:

But actually I was curious anyway what's inside and while checking the specs of all significant parts, the op-amps , DA converter (they have digital in, too) and poweramp on the net, one also gets aware of the prices of these parts. It's no more than 20 bucks in 1k qty...

Here it goes: half a dozen TL072 ops, a Burr-Brown 1316 (up to 96k/24bit), the usual Crystal S/PDIF driver and a LM 4766 integrated poweramp, plus a shieled transformer, a small number of caps and resistors.
Without the digital stage it would be a nice, simple DIY project :wink:

cheers, Tom

<font size=-1>[ This Message was edited by: astroman on 2004-07-31 13:27 ]</font>
blazesboylan
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Post by blazesboylan »

I love companies that provide schematics. I'm not serious about DIY projects at this point but would like to get into it some day. I recently found these MIDI-controllable dynamics units from Urei:

Urei Platform series

And although they're very complex and would not be cheap to put together, I think they would be a fantastic DIY project for someone with lots of time on their hands. (E.g. all you Europeans with 5 weeks of vacation!!! :smile:)

As for the Roland, I haven't seen the specs but for me the D-A stage would be a great little DIY project. I'd love to have an extra cheap pair of analog outs without the high noise floor.

Cheers Tom,

Johann
hubird

Post by hubird »

knowing really nothing about electronics :grin: I once put together a DIY bass guitar distortion set: all electronic parts plus a small printplate with the copper connections on it...it sounded great! :grin:
Haha, I hardly know the difference between a resister and a condensator :smile:
I still have that book with hundreds of DIY guitar 'plugs', including stuff like a de-hummer.
But I never put my electronic carreer further:-)

<font size=-1>[ This Message was edited by: hubird on 2004-07-31 19:09 ]</font>
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