Electronics > Beginners
Custom firmware for old oscilloscope (ideas)
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Pcaiman:
Hi forum, im Pablo and have a idea/question, (sorry for the bad english), is posible make a custom firmware for the old oscilloscope? Example fluke have a automotive oscilloscope the model 98, but this model is very rare and is Hard to find. And for this, i have the question, is posible make a custom firmware with principal automotive testing mode, for the principal sensors, using a old fluke 99?
ebastler:
Assuming that the hardware is identical between the Fluke 98 and the Fluke 99 (and I don't know whether it is): Yes, a modified firmware is possible in principle. It would be seriously difficult to reverse-engineer the code and write your own version. But maybe it would be possible to extract the firmware from a '98 and load it into a '99?

You should start be confirming that the two meters really are identical in hardware -- study the datasheets and manuals, try to find service manuals, for both of them.

Worth a closer look, because, who wouldn't want a Fluke 98?  ;)

Pcaiman:

--- Quote from: ebastler on May 12, 2019, 06:56:08 am ---Assuming that the hardware is identical between the Fluke 98 and the Fluke 99 (and I don't know whether it is): Yes, a modified firmware is possible in principle. It would be seriously difficult to reverse-engineer the code and write your own version. But maybe it would be possible to extract the firmware from a '98 and load it into a '99?

You should start be confirming that the two meters really are identical in hardware -- study the datasheets and manuals, try to find service manuals, for both of them.

Worth a closer look, because, who wouldn't want a Fluke 98?  ;)



--- End quote ---

Wow i think that this job is most easy, maybe how, make a custom firmware but with upgrade functions, how hack the fluke 99, i not buy a fluke 98 because in my country dont have this equipment and in ebay dont find this tool, and really i think that fluke can open the source code in the old discount models, and anyone can make the custom firmware for special áreas.
bdunham7:
I have a Fluke 98 and I had a Fluke 98 Series II and I used them on automotive electronics for many years.  They are excellent for their intended purpose, but I don't know if it would be worth the trouble to do what you are proposing.  The buttons and front panel of the 98 is laid out entirely differently from the other Scopemeters.  I don't know what other hardware would be different and I suspect they are very similar since the specs are similar.  The bandwidth differences are due to the fact that the 98 does not use any repetitive sampling and thus 25Msamples/sec limits the bandwidth to 5MHz. 

Both of them regularly show up on eBay, so if you want one I'd wait for an appropriate 98 Series II with all of the accessories to come up for sale.  A major part of the value of any Scopemeter, including a 98, is the high-quality custom leads and accessories that come with it. 

https://www.ebay.com/itm/Fluke-Scopemeter-98-Series-II-9444-900-98133-FREE-SHIPPING/283261984538?hash=item41f3badf1a:g:1wUAAOSwtilb7Z9Y
Shock:
I have a Fluke 98 II also, though mine still needs some TLC. This model Scopemeter also contains many accessories. You need to evaluate what features you cannot replicate with a modern substitute to see if it's worthwhile.

Even though it seems expensive buying one from Ebay is going to be far cheaper than developing software to convert over another model.







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