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  1. The descriptor request failure could indicate the connection problem of some USB wires or USB controller damage. The LED on AD is connected to a digital pin which lights up only after the device is connected with a software. In case the LED was damaged by your custom supplying attempt it is most likely that other ICs on the board got also damaged.
  2. Hello, Unfortunately data compression is not yet available.
  3. The scope inputs of AD are differential. Connecting C2+/- over a resistor this will measure the voltage drop on it. Then using math channel divide this value with the resistor value you will get the current, M1 =C2/R Having the C1- connected to ground and C1+ to a test point this will measure the voltage relative to ground, like single ended input.
  4. Hello, The "without losses" depends on you trigger rate, the needed sample rate, long time meaning.. There are several millisecond gaps between repeated acquisitions, depending on computer performance and opened measurements, views.... With record mode you can capture up to 10M samples at up to 1-2MHz (without gaps). You can also create custom script or dedicated application for better performance and "infinite" length processing. Here for instance Math1 is C1 as long C2 is above 1V, recording for 10sec at 1MHz and freq/time shown in spectrogram view. Similar posts:
  5. Hello, You can find the Analog Discovery 2 reference manual on the following page:
  6. Hello, Currently the labels are not stored separately for tabs. For such purpose you could open multiple scope interfaces. This from scope file/new menu or by Ctrl key + click on scope button on WF main page.
  7. Hello, You could use a reference channel for this purpose. // clone a real channel to have proper time alignment Scope1.Ref1.Clone(Scope1.Channel1) Scope1.Ref1.enable = true // custom data array var c = Scope1.Channel1.alldata.length var rg = []; for(var i = 0; i < c; i++){ rg[i] = sin(4*2*PI*i/c) } // apply it = rg
  8. Hello, Unfortunately such feature is not available in the software yet.
  9. Hello, See the following page:
  10. Hi @blueglow You could try to use powered USB hub or 5V DC ~2A supply for AD2.
  11. Hi @ABEF The Scope data is only provided in double format which is scaled to voltage unit.
  12. Hello, You can find the changelogs on the "previous version" download page: For 3.5.4 you have the following blog too:
  13. Hello, The twisty curve in FFT could show up when having logarithmic scale and start frequency too far from stop. This is fixed for next software release. For now, to prevent such curve in WaveForms settings/options select curve linear. For averaging you have multiple options: In scope interface the under channel option default is Average. This averages the 100MHz ADC values to the current sampling frequency. For instance for 800kHz sampling 125 AD conversion are averaged. Under time settings you have averaging of acquisitions. In FFT you have various peak hold, min hold, linear, exponential averaging. Here R1 is without any averaging, R2 with sample averaging, R3 with acquisition averaging, C1 with FFT min hold. In Spectrum interface under channel options you can also select sample averaging and you have the FFT averaging options for each trace. Note: Set the magnitude top to 0dBV or lower to have scope at high gain (5V pk2pk) or adjust the range under channel options. T1 min hold, T2 rms average, T2 sample average Here is a noisy 10MHz signal acquisition averaged (I used flying wires) R1 is not averaged.
  14. The ~330uV is the resolution not the sensitivity. The DNL of ±0.35 LSB might be a typo in the reference manual. The AD9648 specs ±0.5 LSB. The 500uV/div in the reference manual is not specified as the sensitivity but the range option available in the software. "Scope scales: 500uV to 5V/div"