The .PDN image files can be opened on Win XP, Win7 & Win8 with Irfanview if
you download and install the plugin package from the Irfanview web site. I
use XP 32-bit, and the files opened just fine for me.
Cheers,
Dave M
[email protected] wrote:
For all, working on a modification of the HP-419A:
I have uploaded to my HP-419A share point some high quality
schematics, I have created for the modification process.
Link:
https://www.dropbox.com/sh/czd2uc3t0uvgggz/AAC--ykVziW9rSJkdg2J_-wZa?dl=0
Important note:
I created them using PaintNET on 64-bit Win7.
It may impossible to open them with the 32-bit Win7 version because
of the memory restrictions.
I uploaded following files:
HP419A optimized original schematic complete (with doc).PDN (the
original amplifier schematic with some additional notes)
HP419A optimized original schematic complete.PDN (the original
amplifier schematic)
HP419A optimized original schematic (3µV mode).PDN (amplifier
schematic in the 3µV mode)
Enjoy and feel free to comment.
BR
PeLuLe
Gesendet: Donnerstag, 25. Juni 2015 um 18:55 Uhr
Von: "Dave M" <[email protected]>
An: "Discussion of precise voltage measurement" <[email protected]>
Betreff: Re: [volt-nuts] HP-419A Fluke 845A Mods - shared link
Randy,
False alarm. When I downloaded the PDF again, it came through fine.
The
file that I downloaded originally was only about 75K, not the 500K
file that
I got the second time.
Sorry for the alarm.
Thanks again for sharing your work.
Dave M
Randy Evans wrote:
Dave,
I checked the HP-419A marked up schematic and I find it very clear
and readable. Does anyone else have problem reading the pdf file?
Thanks,
Randy Evans
On Wed, Jun 24, 2015 at 6:38 PM, Randy Evans
<[email protected]> wrote:
Dave,
I should have checked it. I will generate a higher resolution
version tomorrow.
Randy
On Wed, Jun 24, 2015 at 10:49 AM, Dave M <[email protected]>
wrote:
Rady,
Many thanks for the uploads.
One issue... the marked-up PDF of the HP 419A schematic is
virtually unreadable. Could you post a higher resolution image of
the markup details? Don't really need the full schematic, just the
areas where the connections to the new circuit are made.
Thanks again,
Dave M
Randy Evans wrote:
I have created a shared link to my working folder with the details
of the HP-419A and Fluke 845A modifications. It is an in-process
design so I suspect there may be many questions. Just send your
questions and I will try to answer them. In the meantime, I will
try to find time to clean up the design a bit.
Hopefully I created the link correctly. Let me know if you have
any issues with the link.
https://www.dropbox.com/sh/7b3hsy0j0wq35hw/AABkmVptTwVu2EJFRqtSdAjya?dl=0
Randy Evans AE6YG
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