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RFspace NetSDR Bedienungsanleitung Seite 27

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4.5.1.4 Data Format Details
The data bytes represent either two 16 bit sample values representing the I and Q data or 1 real 16 bit sample value.
The byte breakdown for the 16 bit real FIFO data mode:
R1
lsb
R1
msb
R2
lsb
R2
msb
R3
lsb
R3
msb
R4
lsb
R4
msb
………
The byte breakdown for the 16 bit I/Q data single channel mode:
I1
lsb
I1
msb
Q1
lsb
Q1
msb
I2
lsb
I2
msb
Q2
lsb
Q2
msb
………
The byte breakdown for the 24 bit I/Q data single channel mode:
I1
b0
I1
b1
I1
b2
Q1
b0
Q1
b1
Q1
b2
I2
b0
I2
b1
I2
b2
Q2
b0
Q2
b1
Q2
b2
….......
The byte breakdown for the 16 bit I/Q data dual channel mode. Channel 1 and 2 data is interleaved:
I11
lsb
I11
msb
Q11
lsb
Q11
msb
I21
lsb
I21
msb
Q21
lsb
Q21
msb
I12
lsb
I12
msb
Q12
lsb
Q12
msb
I22
lsb
…
……
The byte breakdown for the 24 bit I/Q data dual channel mode. Channel 1 and 2 data is interleaved:
I11
b0
I11
b1
I11
b2
Q11
b0
Q11
b1
Q11
b2
I21
b0
I21
b1
I21
b2
Q21
b0
Q21
b1
Q21
b2
I12
b0
I12
b1
I12
b2
Q12
b0
Q12
b1
Q12
b2
I22
b0
...
4.5.1.5 Data Packet Sequence Number Details
The 16 bit Sequence Number starts with zero then increments by one for each packet that is sent up to 65535
(0xFFFF) then starts with the value of one and increments by one again. The Sequence Number value of zero is only
sent on the very start of a capture sequence. This is useful in the Hardware Sync modes to indicate in the data stream
when the trigger event occurred.
Trigger 1
st
pkt 2
nd
pkt 65535
th
pkt 65536
th
pkt 65537
th
pkt
0x0000 0x0001 0x0002 ........ 0xFFFF 0x0001 0x0002
Rev. 1.03 2011-11-01
27
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