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Appendix.
Rx Flow Chart & Solution
Block 4 Test) U203 (RF Main IC) Check!!
B4115
SAFC1842.5
-60dBm
(4)
GSM Handsets Lab.
-58dBm
-60dBm
(1)
(2)
SAW Filter
RX1
(B4837)
RX1X
360MHz
MO
MOX
RX2
RX2X
LNAG
LNAON
BSW
OSW
LO VCO
(MQE956)
GSM : CH40, -60dbm
DCS : CH700, -60dbm
-65dBm
(3)
IFI
/4
IFIX
/1440
PFD
/NA
PFD
LO1
LO1X
LO1X
1285~1361MHz
1445~1520MHz
LF
PLL_ON
61
IR
RXIP
IRX
RXIN
QR
RXQP
QRX
RXQN
1440MHz
13MHz
AFC
/13
FSYS
VCTCXO
(KT16-KEU28L)
LF
/5
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