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Everything posted by attila
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Timing the execution of multiple digital outs with PC trigger
attila replied to HasNoCreek's question in Test and Measurement
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Analog Discovery 2 is not recognized in Debian 12
attila replied to AHT's question in Test and Measurement
Hi @AHT Did you attach the 'Digilent USB Device' to the virtual machine ? -
how to analogOut on ad2 in a loop with varying amplitude
attila replied to mikeyc's question in Test and Measurement
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Getting Measurement messed up in windows and linux machine.
attila replied to Kodeeswaran S's question in Test and Measurement
Hi @Kodeeswaran S Could you also share the script code you wrote?- 11 replies
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- ad3
- digilent sdk
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Hi @joshna I don't recommend using this "WF_SDK" Looking at the code: with scope.record you perform separate captures for each channel, although it would be better to retrieve the channels data from the same capture; the scope.open has 'amplitude_range' parameter I don't know why you are reading 30V... See the real WaveForms SDK manual and examples:
- 3 replies
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- analogdiscovery3
- ivcurves
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Hi @Luke Aldrich The demo mode is intended to explore the application and device options; triggering, record... are not its strengths. The ADP2230, AD3X50 have deep onboard memory so even if the computer is slow on data transfer or storage it should be able to capture up to device buffer size lossless.
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ADP3540 cannot install SDK on the device itself
attila replied to BSc's question in Test and Measurement
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Digilent Discovery waveform tool support required
attila replied to Dinu's question in Test and Measurement
Hi @Dinu 1. The Protocol/UART does not have auto rate option. The continuous Spy mode on multiple UART lines is not suitable for high rates specially with Digital Discovery since this does not support data compression. 2. FileAppend("~/Desktop/uart.csv", Logic.Channels.UART.events.join("")); -
Timing the execution of multiple digital outs with PC trigger
attila replied to HasNoCreek's question in Test and Measurement
Hi @HasNoCreek The easiest way, if ms precision is sufficient, would be software control using FDwfDigitalIO... functions. You can use digital-out function for automated precise control, see FDwfDigitalOut... functions. For fully independent control the analog-out functions can also be used, see FDwfAnalogOut... functions. -
Record impedance value along with the time elapsed in a CSV file
attila replied to aaaaa's question in Test and Measurement
Hi @aaaaa You can use the Script tool like this: Impedance.run(); var t0 = Date.now() for(var i = 0; wait(0.999) && i < 1000; i++){ // wait 999ms var v = (Date.now()-t0)+","+Impedance.Traces.Trace.getData("Impedance")[0]; print(v); // ms, ohm FileAppendLine("~/Desktop/imp.csv",v); } -
Coninuous (streaming) arbitrary waveform output
attila replied to gcb's question in Test and Measurement
Hi @gcb Continuous digital play is not available with any device. The Digital Discovery has Play mode for up to 256MiB of data. Other device support 'unlimited' AWG Play which could also be used as 1bit digital line. Analog Discovery with 32k device buffer up to about 4MS/s. ADP3X50 has 32Mi AWG sample device buffer, ADP2230 has 128Mi buffer and USB3. -
Hi @bryan78 Thanks for the observation.
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Waveforms beta .15 fails to install on Fedora 39(KDE).
attila replied to pfm's question in Test and Measurement
Hi @pfm Corrected here: I accidentally left it there in the previous version when trying to make it compatible with other RPM distributions. Unfortunately the packages have different naming in repositories. -
Hi @bryan78 It is corrected in the latest version:
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Issue configuring AD3 trigger in the Waveforms (C) SDK, and Crosstalk in the AD3
attila replied to Sam S.'s question in Test and Measurement
Hi @Sam S. For Network Analysis triggering is usually not important but your trigger settings seems to be ok. For stability, to not to trigger on opposite edge due to noise, you can use FDwfAnalogInTriggerHysteresisSet. Better use trigsrcAnalogOut1. The NA interface uses this for coherent averaging. You could also apply to FDwfAnalogImpedance... functions which can be used for NA, see the example. Crosstalk depends on the setup. Leaving the high impedance oscilloscope inputs open, specially with wires attached will catch more noise and crosstalk. Use BNC cables or twist positive/negative inputs and signal wires with ground for better noise rejection and less crosstalk. -
Discovery 3 with Raspberry Pi Zero 2W over current error
attila replied to rjratnip's question in Test and Measurement
Hi @rjratnip It could be a similar hub or driver problem as it is with RPi1,2,3 where FTDI USB packets are randomly lost or corrupt. -
Hi @woldes The I2C should be read as logic high in idle. Do you have pull-ups on the SCL and SDA ?
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Logic Detector as trigger in Scope. Is it possible?
attila replied to m72's question in Test and Measurement
Hi @m72 Set the UART Baud to Manual. With Auto the Rate is recalculated for each capture which is handled as configuration change and the Buffer counter is restarted. It will be corrected in the next version. -
Hi @StefKay Looking at the project, unfortunately there are no clock capable DIOs, so reference clock for device synchronization is not really possible with EclypseZ7.
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Saving measurments in buffer to a single .csv file
attila replied to GCompton's question in Test and Measurement
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Hi @GCompton With the current sw version you can select Trigger 1 to output 'Scope Detector' and select Sampling Clock T1 This will store one sample for each trigger event with 15 cycle delay, 150ns delay for 100MHz or 120ns with 125MHz system frequency. The next version will let you select directly 'Scope Detector' as Sampling Clock.
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Hi @Rohan16 If you referring to the SPI mode with '0th clock pulse' ? This can be adjusted with Polarity and Phase options.
- 7 replies
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- test and measurement
- spi
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Hi @StefKay It looks like dual mode with reference clock is not supported with EclypseZ7. I will try to add support for this next week.
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Discovery 3 with Raspberry Pi Zero 2W over current error
attila replied to rjratnip's question in Test and Measurement
Hi @rjratnip 1. It could be an adapter/cable contact problem. 2. The AUX supply can only be blocked by the the under/overvoltage 4.11V/5.76V protection circuit. You could have a grounding issue. Are the RPi and 5V supplies floating or grounded ? If both are grounded make sure to use nearby sockets, same splitter. With the default 'USB Power' 'Stop with AUX' the USB supply line is turned off if the AUX voltage is ok, 4.5V...5.5V If this option is 'Always ON' the USB and AUX currents will balance according the voltage/cabling resistance. If the USB voltage is higher than AUX, the AUX current will be lower. Verify the voltage of your supply or use powered HUB. -
- 7 replies
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- test and measurement
- spi
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