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Everything posted by attila
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Hi @bryan78 The latest version adds Repetition option for Digital Discovery:
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Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
Hi @Kabron The base instruments (Oscilloscope, Wavegen channels, Logic Analyzer, Pattern Generator and StaticIO) can be used (separate windows/tabls) and run independently in the device. The Impedance Analyzer interface controls the Oscilloscope and one Wavegen channel to perform measurements. When this is used with the Adapter option it also takes control of the DIO lines of the device to control the IA Adapter. The StaticIO interface becomes busy. The Custom mode in the IA interface lets you control the Voltage, Offset and selected Resistor (with the IA Adapter) during measurement sweep. All the instruments can be controlled from the Script interface. You could control your custom module using the StaticIO interface or automate the DIO control and Impedance measurement with the Script interface. However with this method it is not possible to adjust the current/resistor on measurement step basis. Later I'll try to add an option to control the DIOs directly from the IA interface. -
ADK triggering scope with waveform channel using SDK
attila replied to tiqi's question in Test and Measurement
Hi @tiqi FDwfAnalogInTriggerSourceSet( hdwf, trigsrcAnalogOut1 ); The FDwfAnalogInTriggerPositionSet is the time position expressed in seconds! -
Hi @bryan78 The 'Repetition' channel/signal option is not available for Digital Discovery. Without this the pattern is repeated while the Pattern Generator is running. The disabling of this option will be solved in the next version. The next version won't list disconnected ADP5250. With the current sw version uncheck the Filter/Remote option.
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Hi @bryan78 Could you attach a screenshot ? It seems to work correctly for me, custom filled with a counter pattern:
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Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
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Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
Use the StaticIO... from Script tool As you mentioned the Impedance.DIOs is only working when Adapter setup is selected. This because when Adapter is selected the Impedance takes control over the device DIOs to control the IA Adapter. With other setups the Impedance does not control the DIOs so these can be controlled from StaticIO or with script through StaticIO.Channel... -
Analog discovery 2: Export Wavegen data through script
attila replied to Dante's question in Test and Measurement
Hi @Dante Use: Wavegen1.Export("~/Desktop/preview.csv", "Channel1") Be aware that this is just the Wavengen output preview. -
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Hi @Arin George The Record (Sync) and Scan Shift/Screen modes continuously stream data (more accurately transfer in chunks) from the device. The device memory is used as a FIFO. In the WF app record mode displays warning when samples are lost (fifo overflow), in the SDK/API FDwfDigitalInStatusRecord lost and corrupt arguments. The Single mode captures in device memory (buffer) and the data is transferred to the host only after the capture is done, then a new capture is started (automatically). So the gaps between repeated captures are not sampled.
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Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
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Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
Hi @Kabron See the following topic: -
How to measure frequency of analog signal using python APIs provided ?
attila replied to Mina Sameh's question in Test and Measurement
Hi @Mina Sameh See the following post: -
Suggestion for improving the impedance analyzer
attila replied to fonak's question in Test and Measurement
Hi @Kabron You have warning in analyzer mode because compensations are enabled but not performed. Do you have performed open/short compensation in meter mode ? These are saved separately for meter/analyzer and for each setup (W1-C1...) -
Measuring the delay between two rising edges on Discovery 2
attila replied to maxwell_'s question in Test and Measurement
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Hi @KLPE You could also use the AD2 Scope for wired capture if you zoom out, increase the time base.
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FDwfDeviceOpen disables power supply on Analog Discovery 2
attila replied to DurandA's question in Test and Measurement
Hi @Mina Sameh No, only one application/script can be connected to one device at a time. -
Hi @KLPE Probably you are seeing your first short pulse and the other two (or likely just the second) longer pulse.
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FDwfDeviceOpen disables power supply on Analog Discovery 2
attila replied to DurandA's question in Test and Measurement
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Hi @Brian C With the WaveForms app and SDK/API running on the computer the ADP3X50 T&M part can be controlled or other Digilent T&M devices connected to the computer (USB or Ethernet). With the WF running in the ADP3X50 Linux its T&M part can be controlled (with su) and other Digilent devices connected to this (USB or Ethernet). Other devices can be controlled with appropriate software/script/commands. Sorry but I'm not familiar with the mentioned product.
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Waveforms with AD2 - measuring Gaussian noise from switching regulator output
attila replied to longboard's question in Test and Measurement
Hi @longboard Yes, when the histogram resolution is lower than the ADC resolution there will be probably more samples in hist steps, increasing the % The bar option is available in newer sw version: -
Waveforms with AD2 - measuring Gaussian noise from switching regulator output
attila replied to longboard's question in Test and Measurement
Hi @longboard The histogram Y axis represents the percentage of samples within value ranges reported to the total visible number of samples. The histogram width is the full ADC channel range and the default value range is the ADC resolution. -
[Hardware] Digilent Digital Discovery - Logic Probes
attila replied to JeromeBoateng's question in Test and Measurement
Hi @JeromeBoateng 100R, see: https://digilent.com/reference/test-and-measurement/digital-discovery/reference-manual#accessories https://digilent.com/reference/_media/reference/test-and-measurement/digital-discovery/250-104_dp_2.54_3.pdf -
Analog Discovery 2: Can it be used to take analog to make digital TTL
attila replied to marle12's question in Test and Measurement
Hi @marle12 The 0/4V signal can be connected to AD2 DIOs and use a series resistor to limit the current. The input logic threshold is about 1.5V or 0.5V with 5/7th configurations. The Pattern generator ROM logic can be used for IO purpose. Like here DIO 0 input and DIO 1 output.