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Re: HP Masked Microcontroller Question
Thanks Yes, I see what you mean.? I too understood that mask programming the main counter processor was expensive and HP likely purchased a lifetime supply of the 1820-2131 parts.? There is,
By Jim Flanagan · #123056 ·
Re: HP-8753E Reading HPGL Files
I am now editing those files inside of the 7470 emulator. I have also been able query the VNA at Address 16 for them using this toolkit. Looks like I can choose from a great many formats besides .bmp
By Rich Miller · #123055 ·
Re: HP-8753E Reading HPGL Files
John's 7470 program will render an HPGL file which you can capture as a .BMP file and then tweak in your computer such as to add a box border.
By nj902 · #123054 ·
Re: HP Masked Microcontroller Question
It seems pretty reasonable to me, the 1820-2131 seems to be the main processor running two pretty similar counters that where likely designed at the same time, the one big difference being the 5316
By Paul Berger · #123053 ·
HP Masked Microcontroller Question
Searching the service manuals for the HP5315A/B, HP5316A and HP5316B counters, I noticed that the part number specified for the microcontroller is the exact same:? 1820-2131.? Since these are all
By Jim Flanagan · #123052 ·
Re: HP8903A project
I have mostly RF switch plug ins that i use but i have some terminal plugs laying around that might fit
By Lothar baier <Lothar@...> · #123051 ·
Re: HP8903A project
Which plug ins do you have? I might have some terminal blocks laying around
By Lothar baier <Lothar@...> · #123050 ·
Re: Scoping the Power Rails [8566B]
Jinxie, Your spikes do sound a lot like what you'd see from excessive probing inductance caused by a large loop area from the ground lead. One simple test I often do to determine whether my probing is
By Matt Huszagh · #123049 ·
Difference between HP 10501A/10502A/10503A and 11170A/11170B/11170C BNC cable assemblies
In the 1983 catalog, HP lists 2 different sets of BNC cables: the 10501/2/3A series and the 11170A/B/C series (p. 640). Both are listed as using 50ohm coaxial cable. The first series says it uses
By Matt Huszagh · #123048 ·
Re: Scoping the Power Rails [8566B]
Might not be a bad idea to look up and review Bob Pease's article(s) on this. Grounding was a particular concern of his and he wrote several very good articles explaining the concepts. Cheers! Bruc
By Bruce · #123047 ·
Re: Scoping the Power Rails [8566B]
(It would be helpful to quote the email that you're replying to. Hint: This is a mailing list, not a web forum.) I don't mean this the way it's going to sound, but most people don't see what it's
By Dave McGuire · #123046 ·
Re: HP8903A project
Thanks for fast reply, can I be cheeky and ask what plugins you have...? Regards Nigel Sent from my iPad by banging a nail into a piece of wood...
By nigel adams · #123045 ·
Re: HP8903A project
I have three 3488 switches and a selection of plug ins. I recently bought a well loaded 3488 at a pretty good price from Ebay in the UK. I would love to be able to buy some of the connector blocks for
By Michael Kellett · #123044 ·
Re: Scoping the Power Rails [8566B]
I'm not too sure what Harke means. I don't see what shorting the tip to the ground is going to achieve. I'm probing A17 and A18 boards and there is simply nowhere other than nearby aluminium chassis
By Jinxie · #123043 ·
Re: HP8903A project
Interesting article/posting. Do you have the 3488 switch with the vhf switch modules? Nigel Sent from my iPad by banging a nail into a piece of wood...
By nigel adams · #123042 ·
HP8903A project
Here's a link to a blog of mine elsewhere which I hope some on this group may find interesting. It covers some (initial) work on the 8903A and my take on yet another USB - HPIB interface.
By Michael Kellett · #123041 ·
Re: HP-8753E Reading HPGL Files
Most graphic programs use (or used) to open hpgl files... Enviado do meu Tele-Movel Em dom, 27 de fev de 2022 13:19, Rich Miller via groups.io <av8torrich= [email protected]> escreveu:
By Alexandre Souza · #123040 ·
Re: HP 82901M Dual Floppy Disk Drive - servicing advice
I don't believe you'll need new drive belts, afair, these belts are made from a kind of cloth + some rubber, they never lace or deteriorate. I service drives here and in some hundreds of tm100 and
By Alexandre Souza · #123039 ·
Re: HP-8753E Reading HPGL Files
Hi Steve: I have Jon's Software. I use it for some older Tektronix and Advantest instruments I own. I always thought it was designed to be used with a GPIB interface. Let me load this up, and see if I
By Rich Miller · #123038 ·
Re: HP-8753E Reading HPGL Files
Try KE5FX. A Google search yields the first hit at his GPIB toolkit, which includes a reader that will take an HPGL file and display it under Windows. Steve Hendrix
By Steve Hendrix · #123037 ·