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| REVIEW - Rigol DS2072 - First Impressions of the DS2000 series from Rigol |
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| cybernet:
--- Quote from: marmad on July 23, 2013, 11:24:11 pm ---Looking again through Dave's teardown photos of the DS2000, and I noticed a pad labelled 'VIDEO OUT' and some unpopulated footprints near the first FPGA (connected to the ADC and sample memory). I'm really curious about this... has anyone done any probing there - or have an idea what it may be for? --- End quote --- if thats topside, then its the JTAG for BFIN (no other parts on that chain) |
| marmad:
--- Quote from: darrylp on July 24, 2013, 07:34:39 pm ---is that 14 way header a known jtag for something ? or is it a VGA header ? which would have 5 pins ? --- End quote --- There are no connections top or bottom between the 'video out' footprints and the header. I assumed it was a composite video out - but of what exactly? It appears to be coming from the FPGA that controls sampling - not the one dealing with display memory. |
| Carrington:
Yes, it's very strange, Also the video output seems to return to the fpga. No return, out fron the FPGA! To the 10 pin IC reach from the right three tracks: Analog RGB? or Digital? Analog Sync! Very strange. ??? |
| UberSteve:
Anyone know if you can get a front dust cover for the DS2000? I've seen one for the DS4000... Cheers, Steve |
| Carrington:
--- Quote from: Carrington on July 25, 2013, 12:05:03 am ---Yes, it's very strange, Also the video output seems to return to the fpga. No return, out fron the FPGA! To the 10 pin IC reach from the right three tracks: Analog RGB? or Digital? Analog Sync! Very strange. ??? --- End quote --- http://www.ti.com/lit/ds/symlink/lmh1980.pdf Is a analog video sync separator for NTSC, PAL: 480I/P, 576I/P, 720P, 1080I/P/PsF So it does have some sense. But why is unpopulated? :box: |
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