AOR AR2300 Operating Manual page 54

3. DATA FORMAT
1) Sampling Rate:
2) USB:
3) Data Format:
Fix Point(2's compliment)
USB data Stream
MSB
I-High(29..15) 15bits
I-Low (14..0)
Q-High(29..15) 15bits
Q-Low(14..0)
4 )USB Interface: ENDPOINT 6
5) USB driver for Windows XP/VISTA/7
4.USB DRIVER INSTALLATION
To install the driver, the following files are required.
AORAlpha.sys
AORAlpha.inf
AORAlphaDD.h
5.NOTE FOR PC SOFTWARE DESIGN
To read the I/Q data, the client driver needs to be interfaced for data acquisition.
The data acquisition is easily accomplished by a simple setup. The test program "AR-ALPHA
TestAPP", written by C++ is supplied. (Sample code is supplied with driver software.)
5.1 Get the device path
The supplied client driver needs to obtain the device using SetupDiXXX() API functions before
opening driver by CreateFile() API. This is because the driver interface uses GUID for the
application.
Following is an example to get the device.
53
1.125Msample/Sec
72Mbit/sec., Isochronous (USB2.0)
I: = (29..0): 30bits
Q:= (29..0): 30bits
One Sample = (16bitsWord x4)
15bits
15bits
AR-ALPHA USB Client Driver
It will be copied in the Windows directory system32¥drivers"
AR-ALPHA USB client driver inf file
IoControl type / Structure / Includes the files that defines GUID etc...
LSB
st
1 1 Word
nd
0 2 Word
rd
0 3 Word
th
0 4 Word