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| Low cost logic analyzer probe for Rigol MSO5000 EasyEDA project |
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| S. Petrukhin:
--- Quote from: moelski on August 09, 2021, 08:47:56 am ---Any chance to use this probe with my Rigol MSO1104Z ? --- End quote --- Yes, but need made inteface cabble for MSO1104Z plug. |
| Peter_the_diver:
Hallo guys and thank you for that graet stuff here! I have ordered a PCB for a logic probe as described here. Unfortunately the fucking SN65LVDS1DBVRG4 is currently not availlable :horse:. The market is swept empty - worldwide, one year delivery time! Thus I have decided to make a new board on the basis of Sergeis circuit, with the same PCB format. I have called it version 3.0. However I have used the SN65LVDS391D. This seems to be the the same LVDS driver but in a 4 channel housing. With the SIOC16 housing the routing can be structured verry well. All LVDS-lines have almost the same length now. And the best - these parts are availlable for a fair price (Mouser. DigiKey, Farnell...). Please find attached the design documents here. By the way - it is not yet tested! Feel free to use it - but on your own risk. regards Peter |
| S. Petrukhin:
A good solution, Peter! :-+ But it seems to me that we should not worry about the length of LVDS lines in real life. I was checking my version, where the lines have a big difference in length, on the 36 MHz SPI bus. Didn't detect any interference or jitter. :) |
| Peter_the_diver:
you are right Sergei - last but not least you have to consider the total lengt of the lines (driver output - ribbon cable - LVDS-input). So small differences on the little bord are negligible. However, the use of the SOIC made it pretty easy to realise this evenly routing. Peter |
| S. Petrukhin:
Yes, if we look at the photos of the oscilloscope board (good people published them in this forum), the Chinese guys do not bother with this question at all. :) |
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