Icom IC-R8600 - About the I;Q Signals; D General Description

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.
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.
L “I” and “Q” data are distinguished by the synchronous data that is periodically inserted into the packet. The
contents of synchronous data is xed, 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)
■ About the I/Q signals
Address
(Hexadecimal)
Direction
Endpoint Number
(Hexadecimal)
Transfer Type
I/Q data
IC-R8600 → PC
86 IN 06 Bulk transfer
Sampling frequency
Bit depth
Signal bandwidth
16-bit 24-bit
5.12 MHz Yes N/A 4.48 MHz
3.84 MHz Yes Yes 3.31 MHz
1.92 MHz Yes Yes 1.63 MHz
960 kHz Yes Yes 815 kHz
480 kHz Yes Yes 408 kHz
240 kHz Yes Yes 203 kHz
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).
I/Q SIGNAL
4