Author Topic: Profdc9 Ud2.7C jumper question  (Read 806 times)

Offline RoamingD

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Profdc9 Ud2.7C jumper question
« on: September 14, 2023, 06:32:39 PM »
Hello, I have resumed building my first drsstc and I tried understanding the UD schematic but ultimately failed to understand which jumper should be bridged.
I plan on using all the features, the phase lead, ocd, uvlo so I don't want to accidentally disable something.
The fiber optic receiver will be an HFBR2412
Can someone with experience tell me what they bridged and what not?
« Last Edit: September 14, 2023, 06:35:42 PM by RoamingD »

Offline Lucasww

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Re: Profdc9 Ud2.7C jumper question
« Reply #1 on: September 16, 2023, 07:18:04 AM »
From what I can tell based on the schematic, J4 should be left open if you're using phase lead, J15 should be open (it's for the if-d95 receiver), J9 seems to be a test point for the OCD trip voltage, so that should not be closed, I'm not sure why J14 exists but I think it should be open, J7 should be closed to enable uvlo. J6 is good the way you have it in the picture, and you can reverse phasing by moving both those jumpers up a pin. I think that's everything.

Offline dexter

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Re: Profdc9 Ud2.7C jumper question
« Reply #2 on: September 18, 2023, 06:37:35 PM »
I think this is the schematic you're using: * ud27-schematic.pdf
Based on the picture of your PCB:
J4 open (the inductor is installed)
J9 open
J7 closed and J16 open (need confirmation on J16), adjust RV2 for uvlo
J14 open
J15 open if you're using HFBR2412 and/or D12 omitted but D13 is required
J6 both up or both down

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Re: Profdc9 Ud2.7C jumper question
« Reply #2 on: September 18, 2023, 06:37:35 PM »

 


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