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HARDWARE BLOCK DIAGRAM
8594Q OPTION 190
FOLDOUT 10-5. 8594Q OPTION 190 DVB-C QAM ANALYZER
HARDWARE BLOCK DIAGRAM.
SPECTRUM ANALZYER
A190A1 RF
A190A2 DEMOD
10 dB
STEP AT
0-70 dB
ATTN
INPUT 50
W
IF
LO
RF
3.6 GHz
321.4 MHz
IF
LO
RF
300 MHz
RBW
A3A18
G=+23 +3dB
NF= 7 dB
_
A3A17
TO
BASEBAND
DETECTOR
IF
LO
RF
3-6.8 GHz
TO FEC
70 MHz
SAW
FILTER
AGC
CARRIER
LO
4x SYMBOL
RATE
6.9 MHz
8
4
2
2 dB STEP
I
IF
LO
RF
IF
LO
RF
I
A
D
C
FIR
SYNCH
DEMOD
Q
SYMBOL
CLOCK
I
I
EQ
Q
DMA
MAP
I
DATA
CLOCK
A190A3 DSP
8594DY
HOST/PROCESSOR
CARD CAGE BUS
SAMPLE
RAM
EEPROMRAM
DSP
HOST
INTERFACE
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