![]() ![]() Question for you Rx8pilot: I'm very curious about the kind of scope triggering you need that LAs don't offer. Most of my time will be researching how the various models output their trigger signals. ![]() For example, I'll have to "lock out" the GoLogicXL TriggerForms any time the "reverse" ScopeLink mode is active. I don't think it will be difficult, although I must think about the user-interface effects. I'll talk to my boss about adding "reverse" mode to our ScopeLink wizard. It appears that the lower-price scopes do not (my Agilent 161024A lacks a trigger-out signal for example), while the mid-to-high range scope usually do offer a trigger-out signal (Tek MSO3000 has one). It's very tough to find out which scope models offer trigger-out signals. Rx8pilot, I've been looking at scope models from Keysight/Agilent/Tek. The greatest danger is falling asleep from my boring voice. The audio quality is good enough to keep it from being truly awful. Seriously, the left ear thing is only slightly annoying with headphones. Email me at Just don't make me re-do those dang videos. I recorded them all not knowing Camtasia was set to "mono" on my system. ![]() My work PC apparently has a sound card with "room effects" enabled, so I never knew. And I get nothing but left-ear mono in my headphones. And 4 days later I go down to the local cigar shop to have a stogie and test things with my iPad. Copying the transcripts to the descriptions. It took about 4 days just to upload those videos to YouTube in 720p. One can get a basic FPGA board and use it to tap 50-100 signals with configurable I/O. I think there is room in the market for a solution between $500-1000 that may not be as capable, but much better than the 8bit junk that sells for $100. Personally, I would get a used 16500B mainframe instead. Many of us here are small business guys, or loners that would have a more difficult time expensing a $5k analyzer. You have it covered there (at some expense). You need the return path to closely follow the signal as much as possible. Again a problem with the cheap analyzers is they have 0.1" headers on flying leads with maybe one ground return for 8 signals. The most annoying part of using an LA like that is the probe connection. I am glad to see that your product does all that quite well. At bare minimum you should be able to tap a synchronous 32bit bus. No room for bus arbitration/control signals. 16 channels is pretty much useless, since you can't even watch a 16 bit bus with it. The problem with all the crappy low end analyzers like the Saleae and various chinese knockoffs is they are all but useless except for the simplest serial bus stuff. Ended up scoping a few signals and using a FPGA ILA for the rest. I guess I could be considered a professional, this would've been really handy debugging 250MHz PIPE bus for USB3 phys. Anyway, it looks very well built and capable. Anyway, any feedback/suggestions is greatly appreciated. For example, triggering issues with DDR state mode clocks, or differential signalling, or how to remove noise and glitches from trace captures, and so forth. I also plan to add more technical videos on how specific issues are captured and analyzed. Even many professional EEs don't understand features like Transitional Timing or Glitch Triggering. Specifically, hobbyists may be interested in my video on sampling methods. Most of them cover the GoLogicXL software specifically, but a few videos use simple animations to describe basic ideas that apply to all logic analyzers and oscilloscopes. On the other hand, I've just produced and posted a bunch of tutorial videos on YouTube. I may be crazy, but I suspect the maker/hacker crowd has very little interest in GHz sampling rates and sample depths in the hundreds of millions. I'm very curious: How many professional designers are here at EEVBlog? Can I get opinions from you folks on high-end logic analzyers (and especially mine)? Our tools compete against the super expensive benchtops rather than the lowest-cost tools that get all the web fanfare. We've released a new logic analyzer product, retired our old GoLogic, updated our web site with pretty photos and eye candy, and I wanted to get some feedback on all my hard labor if anyone is willing. Anyway, I'm the engineer who's created all the software and analysis tools for NCI logic analyzers since 1992. I've been looking around the forums and reading the rules, but I didn't see a proper location for product announcements/discussions, so I thought to just roll the dice here in the TestGear category. Please be gentle in case I'm being too pushy. Greetings EEVBlog Forum! This is Brian, a newbie with his first post. ![]()
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