Hello Jacob,

Let me address your questions below:

jacob sarusi said:

1-

I am trying to find how to change board sampling rate (WV5 - signal source tab) to 1.6G with no success, can you help with that ?

Changing from 800MSPS to 1600MSPS can be achieved by changing the mode to one of the Dual Edge Sampling (DES) modes found in the Signal Sources tab on the right.

To learn more about the different modes of operation as well as get a better understanding of how the ADC12D800RF is operating, please review the following application note: http://www.ti.com/lit/pdf/slaa617 

jacob sarusi said:

2-

in VW5 fpga directory I found 3 fpga files:

adc10d1000_xc4vlx25_adc12d800rfrb.bit

adc10d1000_xc4vlx25_adc12d800rfrb2.bit

adc10d1000_xc4vlx25_adc12d800rfrb3.bit

only adc10d1000_xc4vlx25_adc12d800rfrb3.bit seem to be working. is there a place that describes the differences ?

There are several bit file versions included to go with the different revisions of the EVM. In each EVM revision there have been hardware changes that required different FPGA firmware to be loaded. Loading the incorrect bit file will likely load the wrong settings and you won't be able to capture data. However each board has a specific identifier that is read by the WaveVision5 software when you connect the EVM to the computer and the correct bit file is automatically loaded. Simply make sure your WaveVision5 software is up to date.

jacob sarusi said:

3-

Is there a way to put WV5 to work automatically to work (FFT continuous) of computer startup (assuming ADC board is previously powered) ?

I'm not sure I fully understand the question, but as long as the device is powered on and properly configured it will be capturing data. The WaveVision5 software also has a continuous capture button to readback the data.

You can also use the wv5.dll to configure the ADC and capture data without opening the software, using a programming language like Matlab or LabView. You can search the forums where other users have successfully written code for this purpose:

http://e2e.ti.com/support/data_converters/high_speed_data_converters/f/68/p/187541/675239.aspx#675239

jacob sarusi said:

4-

is the FFT depth constant or can be configured for higher resolution or speed ?

You can adjust the capture size under the "Acquisition Size" drop down menu for on Signal Sources tab on the right. 

We have included 4k, 8k, 16k, and 32k. If you need a larger capture depth then you will need to use something other than the standard tools provided here. There is an FMC connector included on the eval board with a pass-through option that allows connecting to other FPGA development kits with larger memory depth, like the Xilinx ML605 or to a logic analyzer. 

Thanks, it answer my question regarding 1,2,4.

regarding 3, I mean, Is there a way to power on the computer having the WV5 starting automatically sampling FFT and showing on screen.

I will of coarse check what other done with WV5.dll.

Hi,

We are trying to use WVdll in a c# environment, without success.

We encountered some problem:

since the dll is c++ based we need to interface the dll to c# (If there is such dll for c# it would help).

we also encountered "winusb_lib.dll is missing from your computer" error, though the usb driver is installed correctly.

Is there any sample code that uses all the dlls and drivers using c# that operates the eval board?

Thanks

Hi Luke,

I've posted this one on internal forum too : please let's work it over there, then I'll be back to Sagi through parallel AskTexas loop.

Thanks again for continuous support and BR to all

Sergio

Hi Jacob

The FFT function is performed in the Wavevision 5 GUI software, not in the FPGA. The FPGA only buffers up the raw ADC data and then delivers it to the PC when requested.

Best regards,

Jim B