| Products > Test Equipment |
| Some old school instruments showing how it's done (HP 3325A and Fluke 8506a) |
| << < (68/91) > >> |
| SilverSolder:
Also worth keeping in mind that the AC accuracy depends on the DC section being in a good state of tune... |
| joeqsmith:
--- Quote from: SilverSolder on February 22, 2021, 03:46:00 pm --- Also worth keeping in mind that the AC accuracy depends on the DC section being in a good state of tune... --- End quote --- Yeah, the manual is pretty clear on the order that things are to be done. Fully agree with your comment on relative measurements between meters. I would like to have an idea of the absolute accuracy but outside of renting a calibrator or shipping it off I don't have any options. Even if it were not aligned and just calibrated with a report, we could have some idea how it behaves. Good topic for the met group. |
| joeqsmith:
Just a link to the last time I attempted to get DOS and a PCIe printer port working together. This hack worked fine up until the lightning storm damaged the programmer and port. With the low cost programmer missing so many of the parts I use, I plan to add another DOS based vintage programmer to the mix. https://www.eevblog.com/forum/chat/printer-ports-for-the-modern-pc/msg1017048/#msg1017048 I did try the low cost programmer with some C256s and it seems to work fine with those. |
| SilverSolder:
I can see it being a bit of a challenge to get parallel ports to work on modern motherboards. Maybe set up a period PC just to run this stuff? (With a CRT of course!) :D |
| joeqsmith:
I was able to locate that same PCIe card. As before, it passes that self test w/ the loop back connector and I was able to control the port with debug under DOS. So pretty much back to where I started in the other thread except using the next generation programmer. Sadly, the software is no longer offered for it but on the plus side, there is the internet. And with the power of Google, http://www.bitsavers.org/test_equipment/modularCircuitTechnology/jdr/ Time to hack some DOS code. This programmer supports U18 (74S287) which is not supported by the TL866. No real surprise as that programmer is very limited. On my board, the part is soldered to PCB. Dive in and hack the Fluke or leave it..... |
| Navigation |
| Message Index |
| Next page |
| Previous page |