About The I/Q Signals; D General Description - Icom IC-R8600 Reference Manual

I/Q SIGNAL

■ About the I/Q signals

D General 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.
Address
(Hexadecimal)
I/Q data
IC-R8600 → PC
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
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).
Endpoint Number
Direction
(Hexadecimal)
86 IN
Bit depth
Signal bandwidth
16-bit 24-bit
Yes N/A 4.48 MHz
Yes Yes 3.31 MHz
Yes Yes 1.63 MHz
Yes Yes 815 kHz
Yes Yes 408 kHz
Yes Yes 203 kHz
Transfer Type
06 Bulk transfer
4