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Found 15 results

  1. I'm trying to output a custom digital waveform that is a frequency modulated bit stream. The basic scheme is as follows: 1. Preamble: frequency starts out at 10KHz for 400 cycles After 2. for a 1 bit, send 20 13KHz cycles, followed by 20 10KHz cycles 3. for a 0 bit, send 10 6KHz cycles, followed by 20 10KHz cycles 4. Postable: frequency runs at 10KHz for 400 Cycles. I can generate the signal with python but I seem to be running into bitstream length issue. The moment the data gets over 1024 "bits" (actual bits, not the frequency modulated ones), the signal is not ge
  2. Hi. I have troubles using the trigger functions in the SDK to align the recording of a signal with the pattern generator (DigitalOut Instrument on AD2). What I want to do is essentially, using the SDK in a python script is: - I record a signal from the AWG on the AD2 I am sending through an analog circuit using two multiplexers. - I control the multiplexers with the digitalOut instrument on the AD2. - I want to align the starting point of the digitalOut-pattern and the starting point of the AnalogIn acquisition (record-mode, int16 data) As far as I understand from th
  3. Hello, I'm trying to use the AD2 pattern generator to create a (digital) sine wave using a value table table. I connected the external trigger to a clock of 10MHz, to create a sine with the frequency of 10/1024 MHz (with 1024 being the size of the table). When I compare the resulting sine wave to a sine wave generated by an FPGA, using a look-up table with the same size and clock, I see that both signals drift apart from each other, even though both of them seem to have the same period. Am I using this tool the wrong way? Is my setting for a trigger wrong somehow?
  4. Greetings, I am working on a project using the Pattern Generator and Logic Analyzer functions of Analog Discovery 2. I'm trying to figure out the proper arrangements of bits to be assigned to the Pattern Generator so that the Logic Analyzer can receive it in UART format properly. Let's say I want to transmit the word "UART" using the Pattern Generator. Here's how I'm doing it using the Custom Signal setting in the Pattern Generator: The bits highlighted in green are the start and stop bits while those in yellow are the inverted data bits of the word "UART". I also adj
  5. Greetings! I'm working on a project using the Analog Discovery 2. I observed that the Pattern Generator can be used as a Transmitter and the Logic Analyzer can be used as a Receiver, if used properly. Here's the VB Script that I've been working on: AD2_Time_Testing.rar The VB Script does the following: 1). ASCII data is entered. 2). The algorithm in the code will convert it into binary to be transmitted by the Pattern Generator. 3). The Logic Analyzer will receive the bits in Record Mode. 4). The UART decoder algorithm will convert the bits received back into ASCII
  6. Greetings, I'm working on a project utilizing the Pattern Generator function of Analog Discovery 2. I chose the Pattern Generator function based from the WaveForms GUI. In that interface, it can be used to transmit data in parallel. I created a VB Script consisting of Pattern Generator APIs, it was working fine. The problem that I encountered is its possible limitation: it can only transmit up to 102 characters. Each character consists of 10 bits (1 Start bit, 8 Data bits, and 1 Stop bit). Here are example of that scenarios: 1). Transmitted messages using DIOs #0 and #1
  7. Greetings, I am creating a VBA Macro Script to enable the Pattern Generator function of Analog Discovery 2 for parallel transmission of data. I've already created a VB6 Wrapper (Pattern_Generator) containing these two files: 1). Pattern Generator Wrapper.txt(Calls APIs from dwf.vb) 2). dwf.vb I've referenced it to a VBA Script to call those functions using this snippet of codes: Public TxWrapper As Pattern_Generator.ComClass1 Public Function PatGenForTx() Set TxWrapper = New Pattern_Generator.ComClass1 'PatGen Parameters Dim rgBits1 As String: rgBits1 = "UART"
  8. Greetings, I am creating a VBA program which uses the DigitalOut Functions in the dwf.vb file to replicate the capability of the AD2's Pattern Generator. I'm having trouble of declaring the FDwfDigitalOutDataSet API in VBA. I always encounter this error: I am aware that this is because of some data types in VB6 that are not supported in VBA. I've encountered similar errors in the FDwfDigitalOutRepeatSet and the FDwfDigitalOutDividerSet API. What I did was change the UInteger data type to Integer, since its the data type supported supported in VBA. Function FDwfDigitalOutR
  9. Greetings! I'm working on a Project involving the use of the Analog Discovery 2's Pattern Generator function. I was tasked to create a VB6 Wrapper in MS Visual Studio 2013 that will perform the functions of the Pattern Generator by calling certain APIs from its dwf VB.NET file. I have two concerns on how to do this. First, as I looked at the WaveFormsSDK sample codes and the WaveForms™ SDK Reference Manual, there is no API available for setting the clock frequency of the Pattern Generator, unlike in its WaveForms GUI. The only API available is the FDwfDigitalOutInternalClockInfo, w
  10. Hello, In my waveforms script I am trying to import and run a saved custom 7-bit bus pattern in csv format that I generated from the custom pattern generator. I am able to read the data from the csv, but when I do: Patterns1.Channels.Bus._custom = data all of the data is just written into the first channel of the bus. Is there another format or syntax that should be used when specifying patterns for custom busses?
  11. Hi: I know that .csv files can be imported into the Digital Discovery pattern generator, but I am curious about other formats, and what exactly their syntax/organization needs to look like. Saw the description of pattern export file formats, but nothing on import. We are trying to use prober patterns as starting points, importing into the Digital Discovery pattern generator and then modifying as needed. Many thanks.
  12. Hello, I’m trying to generate the data whose length is over 1000bits by using the pattern generator in Analog discovery 2. I use Microsoft Excel VBA or Python and command FDwfDigitalOutDataSet. But the VBA cannot treat the int data whose length is over 1000bit in binary. Is there any way to transmit the large data to the pattern generator by using VBA or Python? Thanks.
  13. Hi all, I am doing a project on vhdl in which i am trying to display a pattern (like forming an eight) on seven segment display on spartan 3 fpga kit.I have written the vhdl code and simulation works correctly,but the problem is i am not able to write the ucf code (written but may be wrong) required for implementation on spartan 3 kit.I would highly greatful if anyone can help me as to how to write ucf code or modify my vhdl code. Thanks in advance. Regards, Nikhil Singh pattern generator.txt
  14. Hello, I'm using the pattern generator with the output type set to open drain when the output is Z, measuring the output impedance I read almost 5K Ohm, What could be the problem?
  15. Hello. I’m trying to generate the custom data by using pattern generator in Analog Discovery 2. Although I set the digital output mode as custom, the output data is depend on the setting of the FDwfDigitalOutCounterInitSet. For example, I try this code and the custom data is not come from the pattern generator. rg(0) = &HAFAFAFAF FDwfDigitalOutTypeSet(hdwf, 7, 1) FDwfDigitalOutDataSet(hdwf, 7, rg(0), 32) Then I add the FDwfDigitalOutCounterInitSet and the output data is successfully generated. rg(0) = &HAFAFAFAF FDwfDigital