DDC264: DDC264EVM

3542.DDC264EVM.7zHi David,

How are you?

Thanks for using DDC264 EVM board.

Please receive this file and try it.

Thank you!

Have a nice day!

Best regards,

Chen

I can't load the driver, windows says "Windows could not find the driver software for your device" even though I manually navigate to the drivers directory and there are files in the directory.

I't's not clear that the file un-zipped correctly. It wouldn't unzip at all with WINZIP, so I tried the 7-zip file manager. However, I get an error "Warning: Can not open the file as [7z] archive. The file is open as [zip] archive. 

Hi David,

How are you?

Thanks for letting us know this issue.

Yes, we would like to try to attach other one again.

Hope this time it is working fine.

Thank you again!

DDC264EVM.zip

Best regards,

Chen

My latest try to reply bounced - I'm trying again. The install still doesn't work. I tried to point to the driver directory as suggested in the installation section and I still get the error:

"Windows was unable to install you Unknown Device"

"Windows could  not find driver software for your device."

 I attempted to install the software anyway and got the following error:

Microsoft .NET framework

"Unhandled exception has occurred .....

Unable to load DLL USB_IOfo_VB6.dll. The specified module could not be found.

Now what??

Hi David,

How are you?

Looks like you have already downloaded it and unzipped it at first.

and then however when you tried to start to install it

but you got some errors due to the Window's version.

Right? 

I would like to ask if someone knows the detail for this here

and will let you know soon.

Thank you

and Have a nice day!

Best regards,

Chen

Hi David,

Thanks for using DDC264EVM.

According to our engineering manager here:

Could you please copy the USB_IO_for_VB6.dll to the following

directory location in your PC?

C:\Users\<HostName>\AppData\Local\Apps\2.0\<XD0ROJ9A.HQL>\<00BDJN0E.MTC>\ddc2..tion_f0cdf37a7314ad51_0001.0000_542e76346161ac81

The text highlighted in red could be different on the customer’s PC.

This should most probably fix the error "Unhandled exception has occurred .....

 
Please try it.

Hope this can help.

Thank you and best regards,

Chen

Hi David,

For testing DDC264EVM, please try the following example:

Hope you can see very similar result:

1) Please set the FPGA Control:

First, you can choose "Channel Count" to be 64 (only one DDC264 device=64 channels).

Later you can change it to be 256 (totally 4 DDC264 devices=256 channels)

2) Please select Noise measurement with Graph:

Thank you for using DDC264EVM.

Best regards,

Chen

There was some misleading information in the manual leading me to believe I could power everything from the USB cable. Not so. Got the power straightened out and started reading SOMETHING, but it's still not right. I patched a voltage source into the analog board (and set the appropriate jumpers for the patch. I only did the first bank of resistors) and tried to read the channel data while varying the voltage. I can read the correct voltage at the resistors on the analog board, but I don't get any change on the data read, other than changes in the noise level (and they are independent of the applied voltage). I went up to 5V with no effect. That's where I stopped.

The jumpers were configured exactly as required per your previous e-mail. Instead of jumper the missing jumper connection to provide the reference voltage I applied it to the provided jumpers on the analog card. The reference voltage was confirmed by measuring it at the resistors on the board. I used an ohmeter to confirm that the analog ground was connected to the main board. The jumpers were set so that voltage was only applied to the first bank of resistors. That's why you see me only monitoring the 1st channel in the graph. However, I confirmed that no other channel responded either.

Hi David,

How are you?

Could you please double check if you can setup your DDC264EVM as below?

(We are using the following conditions to test):

Thank you!

(Please make sure all the LEDs are light on as shown below):

Also one connector to Power and the other to USB to your PC.

And note: these three Jumpers should be connected as below:

Yes - that's how it's connected and yes all the LED's are lit. I get new data each time I press Fast Data but it doesn't seem to matter what voltage I have. It always seems to stay right around .38% FS. One time it went up to 0.4% when I had 2V input, but then it went back down to .38% when I went to 3V and never changed again.

Hi David,

How are you?

As you mentioned about the different input voltage,

what does it mean from using the DDC264EVM ?

Does it mean power supply voltage by using J18 connector?

Thank you!

Best regards,

Chen

As I confirmed earlier, J18 has 5V power applied to it. However, since the jumpers J15 and J16 are missing the analog reference voltage is not present at J11 of the analog breakout board. In order to have an input voltage I applied a voltage at J11. The correct pins were confirmed with an ohmeter and the provided schematic. The voltage applied at J11 appeared at the resistors, confirming that this was correctly wired.