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Everything posted by attila
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dwf.framework Compatibility with Apple M2 Chip
attila replied to RamonaC's question in Test and Measurement
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Audio Adapter + stereo mode performance debugging?
attila replied to Andy-205's question in Test and Measurement
Hi @Andy-205 The solder shapes looks good but you could try to resolder TP1/3, add a bit of new tin/flux to it. -
I added a ground lead to BNC adaptor
attila replied to miketranch's question in Test and Measurement
Hi @miketranch Unfortunately your pictures are not available. GND pins are available on the BNC header. USB isolator can be used for safety and noise reduction from computer or ground loops. The cheaper ones provide only USB FS 12Mbps but even this is fine for average usage. Slowdown is noticeable with large captures or data streaming, or high capture rate is desired. -
ADP3450 Communication Faults on USB after time
attila replied to David Wells's question in Test and Measurement
Hi @David Wells Other application or computer performance should not cause transfer error. WaveForms application can be used even on low performance single board computers. On these, the slowdown is felt when capturing or streaming lots of samples and/or performing hungry post-processing or views. -
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For long transfers maximum is about 10MHz: Rate is for the loop function: It is not possible, each of the 16 DIO channels has its own 32ki buffer.
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Waveforms crashes when opening "Script" window
attila replied to jostikas's question in Test and Measurement
Hi @jostikas Thank you for the observation. The crash occurs if the Find / Case Sensitive option was previously checked. It is fixed for the next version. WaveForms - Safe Mode starts the application without loading the static configuration. -
Waveforms crashes when opening "Script" window
attila replied to jostikas's question in Test and Measurement
Hi @jostikas Could you attach or send me in private message your workspace ? -
Hi @Ola In each loop iteration you want to transfer 32 times 24 bits with a clock rate of 6.25MHz. This can be done with a loop rate of at most 7.8kHz = 6.25MHz / 32 / (24+1?) ? because it depends on the specified delays. The 5th AD3 configuration allocates 32ki logic and pattern buffer. For each bit it needs 2 or 4 samples, 32768/2/25, so N can be up to about 650. When transferring more bits than the Logic Analyzer device buffer, the data need to be streamed over USB, with AD3 the max rate is about 10Msps.
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About the character code of the script editor
attila replied to Denspa's question in Test and Measurement
Hi @Denspa The WaveForms application uses by default the system's default fixed font scripts but it can be changed in under Settings/Options The latest version uses UTF-8 in most text save/load of the application: -
ADP3450 Communication Faults on USB after time
attila replied to David Wells's question in Test and Measurement
Hi @David Wells This is most likely a connection issue, the same error is reported on USB disconnect or device power toggle. Make sure the USB and power cables are fully plugged in, try using a different USB port on your computer, cable, different computer... I don't know which software version you are using. Here you can find the latest: -
Hi @yattr
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Can I make the axes of the plot display performed by the script logarithmic?
attila replied to Denspa's question in Test and Measurement
Hi @Denspa It is not supported but you can set custom data for the instruments traces/channels, from the Script tool or from View/Logging/Script like: Spectrum.Trace2.setMagnitude(... -
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Hi @Ola The oscilloscope channels of AD1,2,3 have two input ranges, 5V and 50V. At 10V the ADC is used at about 11.5bits
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Hi @Ola The Write/CmdWrite only writes to D0, like: CmdWrite(8, 0x10, 0, 16, [0x0001]); // write 0x0001 to register 0x10 and for Read0 CmdRead0(8, 0x10, 0, 16, 1); // read one 16bit word from register 0x10 The read/write functions activate CS during the transfer with hardware timing. You can also use the Start/Stop functions for software CS control but this will take more time (like +1 millisecond) and this is also reflected in CS edge to bit transfer timing.
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How to measure the frequency response of a non-textbook filter circuit
attila replied to fizzbang's question in Test and Measurement
Hi @fizzbang The Channel 1 curve shows low impedance at low frequencies exceeding the AWG output drive capability, dropping the output voltage significantly. The phase can only have a range of 360*, adjust the offset for this. -
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Hi @yattr The next version will show value for remaining/less bits than specified. It will also add 'bit label' option. The decoded values are listed in the Events view. Click to highlight in plot, or modify Select mode, or double-click for positioning.
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Hi @Empower The digital-in sampling rate is determined by internal-clock/divider, so for 100MHz set the divider to internal-clock/100MHz
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Options for impedance of oscilloscope channels
attila replied to Oliver's question in Test and Measurement
Hi @Oliver For 50R termination you could use a T splitter and 50R terminator. -
Combined trigger for pattern generator in Digital Discovery
attila replied to infield's question in Test and Measurement
Hi @infield The trigger event is by default the rising edge of the trigger signal, but it can be configured to be the falling or either edge. An instrument's trigger output is high while in Run state. By default the run time is continuous in Wavegen and Patterns, so these will toggle their trigger outputs when started or stopped.