Hi, All last year i posted for solution to programatically retrieving I Q data from USB Tv Tuner (Gadmei UTV382 USB TV BOX) for implementation of SDR. Since then no reply was received that could solve the problem. Some detail of the device, it has
1. XCEIW XC4100ACQ tuner
2. SUNS AV600 Chip (i dont know exactly its DSP chip or demdulator)
3. No FM support

The questions are:
1. Having no FM support as present in RTL2832u, how confirm that this stick can deliver I Q samples?
2. Is there any tool(API) that can scan the internals of USB Stick as no datasheet is avaialble for these chips(they are clone chips, i think chinese)
3. i downloaded libusb and just able to retrieve its end point addresses along with product id.
4. The registers addresses are not known. but in its driver .inf file i found someting like this below (OEM.AddReg in the inf file may be representing registers, i am just guessing)

;

1. If adresses are under 'OEM.AddReg' tag above then what command i should sent and how. Bmw tis free deutsch dialogen. (Example source code)

2. Are the usb tuner commands Generic?

3. On web Directx based Tuning software are avaialbe but they output video and audio. i wonder if directx be made to read I Q data directly from Chip. Is it possible?

4. How RTL2832U based chips output above and below FM range RF I Q signals, if using TV tuner front end then UTV382 (having no FM support) can also provide RF I Q signals if chips supports output of I Q Data. Is that true?
   Please share if any software (source code) for retrieving the I Q Data for SDR implemetation from this device.

   

endpoints and device description is detailed below

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• commentLatest Postby Masood_786Latest Post

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rubberman1,355

What do YOU mean by IQ samples? What exactly are you trying to get out of this device?