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Re: Service manual scan post processing
Hi Tom, Not a digital camera a Canon MS-800 microfiche scanner that was being e-cycled by a local engineering firm Canon MS800II Microfilm Scanner | The Scanner Shop (
By Peter Brown · #150233 ·
Re: Service manual scan post processing
[email protected]> wrote: If I understand correctly, you are using a digital camera to take a picture, then processing that. Could you please upload the jpg file produced by the camera, without
By Tom Gardner · #150232 ·
Re: Service manual scan post processing
Hi David, I am wondering if the claimed 600 dpi is actually the result of interpolation / dithering I will upload a page at 600 DPI in bmp format for completeness in case the no compression .tiff
By Peter Brown · #150231 ·
Re: Service manual scan post processing
<tggzzz@...> wrote: Thanks, I'll have to try and remember that script in the future. My current process converts things to PNM, iterates over 0.0 to 0.9 (by 0.1) into pamthreshold,
By David Holland · #150230 ·
Re: Service manual scan post processing
Nope, those appear to be dithered too.. (and show indications of JPEG compression). I uploaded a high zoom'd screenshot of what I'm seeing.. Sorry... <peter@...> wrote:
By David Holland · #150229 ·
Re: VNA Fixtures
That may well be necessary if I encounter one of those 'problem child' devices that Ed described!
By Jinxie · #150228 ·
Re: Service manual scan post processing
Hi David I have added some of the raw .tiff output from the MS-800 in a tiff subdirectory. Perhaps these are more suitable for contrast enhance etc? Peter
By Peter Brown · #150227 ·
Re: Service manual scan post processing
[email protected]> wrote: That is highly beneficial, and is the way the scancvt script I posted earlier reduces pages to ~80kBytes for a page of text. The scancvt script determines the average
By Tom Gardner · #150226 ·
Re: VNA Fixtures
If you have a lot you can carefully disassemble one of each to get further knowledge. Peter
By Peter Gottlieb · #150225 ·
Re: VNA Fixtures
Ed, many thanks for that comprehensive answer. All bar one of these devices have that capacitor you describe tucked away in the base. Can't be more than a few tens of pF at most I'd have thought. The
By Jinxie · #150224 ·
Re: Service manual scan post processing
I think you may be missing a contrast maximization step. If you zoom in, the pages appear to be greyscale, dithered down to black and white. I don't think you're going to get much better compression
By David Holland · #150223 ·
Re: Disassembling HP 64000 code
Thank you Don and Steve. The assembly code looks exactly like how FORTH is described. The main code sets up a processing engine which gets fed lists of pointers that reference either real assemble
By Tom Haynes · #150222 ·
Re: Dissassembling HP 65000 code
Sven, Can you reply to the new thread with the Bitsaver and Mame information? Both are valuable to the discussion and I hope to include it in the correct thread. Thanks [email protected]>
By Tom Haynes · #150221 ·
Re: Service manual scan post processing
Hi Martin, Thanks for the steer on ImageOptim, I will take a look. I am in touch with a service engineer who used to run a company that printed microfiche and also supplied the reader / scanners. He
By Peter Brown · #150220 ·
Re: Service manual scan post processing
Hi Michael, Many thanks for responding.? Please do take a look at the files, I have posted some pdfs here *Files - A temporary directory for photographs and help relating to emails and posting -
By Peter Brown · #150219 ·
Re: HP 8670B amplifier - does it ring a bell with anyone?
If System Component serial numbers follow classic Hewlett Packard rules, that 6870B would have been built in 1990.? That said, there seem to be 1991 and 1992 stampings on the rear upper left of the
By Bert · #150218 ·
Re: Disassembling HP 64000 code
I was also thinking from your description of the memory contents you found, that it sounds like a stored FORTH program. I implemented FORTH-77 on a 6502 back in the early 80's, and I still have some
By Steve Hendrix · #150217 ·
Re: HP8673C Restoration project
Allan thats a nice generator. I did troubleshoot one for a friend 5 years ago. It turned out to be the yig coil and no parts were available. He did sell the generator as is and did fine. But that was
By paulswed · #150216 ·
Re: Disassembling HP 64000 code
You might want to check this site for information about FORTH. I believe the HP64000 did support FORTH in some of the early versions. What is the Forth programming language? forth.com Don Bitters
By Don Bitters · #150215 ·
Re: HP 8670B amplifier - does it ring a bell with anyone?
There is also an 8760B K73 which is a 24 input 2 output switch matrix. The unit is 19" 4U in size. I am not sure for what systems were these used.
By Razvan Popescu · #150214 ·