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Found 3 results

  1. I am looking for some information about Rigol's Active Logic Head (LH1116) which is included with DS1102D/DS1052D. I wanted to buy new head to replace my missing one, but at >$300, it's just not worth it. I have decided to make my own, but I wasn't sure if it's possible. The price suggested that this must be rather complex piece of hardware and there's no documentation whatsoever. I was able to locate few pictures of the PCB, and as it turns out, this thing is super simple, it's just a few LVD drivers and some simple resistor dividers (totally not worth the $300 price.) There were some problems with those heads, so some versions also have Schottky buffers in them. After some investigative work, I was able to figure out the connections, but one thing I don't know yet is the polarity of some of the signals (I do know D2, D6, D8, and D12.) I will have to build a simple driver to confirm the polarity, but if there's someone who has this head and would be willing to do some tests (the head must be opened for this,) that would save me some time.
  2. RobG

    Analog Discovery

    If you ever wanted to get logic analyzer, you should take a look at Digilent's Analog Discovery. Analog Discovery is a multifunction device developed by Digilent in cooperation with Analog Devices (AD is filled with chips from AD.) AD features analog and digital inputs and outputs, and can be used as an oscilloscope, function generator, logic analyzer, pattern generator, virtual I/O, voltmeter, spectrum analyzer, network analyzer, and even power supply. And the best part, it's affordable, especially for US students. I got my AD several days ago and let me tell you, AD is a true Swiss Army knife for geeks. To show you how useful AD can be, I used it to test new version of my audio analyzer BoosterPack. For my tests, I am using oscilloscope, logic analyzer, and waveform generator instruments (AD comes with software called WaveForms, which is a suite of virtual instruments.) Waveform generator provides 2 audio signals (via 3.5mm stereo jack) to BP's audio input. A simple tone or a sweep can be generated, so many options. Oscilloscope is connected via (optional) BNC Adapter Board and a probe to audio switch's output, so I can see which signal is fed to the EQ chip. Finally, logic analyzer is connected to LP's SPI output and displays sampled data. Analog Discovery's pinout
  3. This is a continuation of this project. While playing around with my WS2811 strips, I figured that it would be nice to have a board like this one. Could be used with one or two EQ chips and as a stand-alone board. The question is: with booster pack support or without?
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