Charge pump pmdx 131

wnevels

65

Charge pump pmdx 131

« on: June 08, 2007, 08:41:09 PM »

I was trying to finally hook up the charge pump and pin 17 keeps oscillating high to low at about 1 HZ
works fine when i first start up then i close and reopen Mach and it starts oscillating

Wes

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Hood

Re: Charge pump pmdx 131

« Reply #1 on: June 09, 2007, 06:19:43 PM »

Dont really know what could be going on but kind of sounds like something might be interfering with the charge pump output from the computer, have a look and see if any programs are running in the background.
Hood

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BR928S4

5

Re: Charge pump pmdx 131

« Reply #2 on: July 12, 2007, 11:41:46 AM »

I am having the same problem. What did you do to fix this problem?

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wnevels

65

Re: Charge pump pmdx 131

« Reply #3 on: July 12, 2007, 02:12:21 PM »

I still have it bypassed no solution yet.

Wes

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wnevels

65

Re: Charge pump pmdx 131

« Reply #4 on: July 12, 2007, 02:18:41 PM »

I just sent pmdx a support request. Which may or may not be answered. As much as i like PMDX boards the support is lacking i'm still waiting on a answer from about a year ago.

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BR928S4

5

Re: Charge pump pmdx 131

« Reply #5 on: July 12, 2007, 02:49:24 PM »

I sent PMDX support an email late yesterday afternoon and by mid morning Steve Stallings had called to discuss the problem with me. Seems it may be a hardware issue and he asked me to return it to them for upgrading. He said at kernel speeds higher than 25kHZ the problem would get worse. And it did. I will have to wait till I have it back to see if the upgrade fixes the problem.

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wnevels

65

Re: Charge pump pmdx 131

« Reply #6 on: July 12, 2007, 08:01:15 PM »

Wow i also got a reply today with the same message.

let me know how it goes.

Wes

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mchnbldr

3

Re: Charge pump pmdx 131

« Reply #7 on: December 16, 2007, 03:42:33 PM »

I have been looking for more charge pump info. The Mach3 docs tell of info on the home page but I cannot find a reference to it. Can someone please point me to the light? Thanks.

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Hood