Icom IC-R8600 I/q Output Reference Guide - Page 5

I/Q SIGNAL ■■About the I/Q signals DDGeneral description I/Q data is output from the [I/Q OUT] port on the IC-R8600. 1 endpoint is reserved to receive I/Q signals. I/Q data IC-R8600 → PC Address (Hexadecimal) 86 Direction Endpoint Number (Hexadecimal) IN 06 Transfer Type Bulk transfer The sampling frequency, Bit depth and I/Q signal bandwidth are as followed. The sampling frequency and Bit depth can be set by the control command. Sampling frequency 5.12 MHz 3.84 MHz 1.92 MHz 960 kHz 480 kHz 240 kHz Bit depth 16-bit 24-bit Yes N/A Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Signal bandwidth 4.48 MHz 3.31 MHz 1.63 MHz 815 kHz 408 kHz 203 kHz L"I" and "Q" data are distinguished by the synchronous data that is periodically inserted into the packet. The contents of synchronous data is fixed, and the synchronous data is to be followed by a "I" signal. LThe data format (I/Q data and synchronous data) differs, depending on the bit depth (16-bit or 24-bit). (p. 5) TIP: The sampling frequency can be set to 120 kHz or less on the HDSDR application. This is achieved by a down sampling in the Dynamic Link Library (DLL). 4