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4. TROUBLE SHOOTING
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4.13.5 Checking PAM Control Signals
Checking Points
Figure 25. Transceiver Output
Table 4. PAM Mode Operation
HIGH
Control Amp bias
HIGH
8PSK
HIGH
Ramp Burst Control
LOW
GMSK
TXON_PA
PA_LEVEL
MODE
MODE
Figure 24. PAM Control Signals Circuit
TP1(PA LEVEL)
TP2(TXON PA)
TP3(PA_MODE)
TP3(PA_MODE)
TP2(TXON_PA)
TP1(PA_LEVEL)
1
R603
1
R604
C606
DNI
47pF
C611
R608
1K
DNI
C629
DNI
C630
PA_LEVEL
PA_MODE
PA_BAND
TXON_PA
LBAND_PAM_IN
HBAND_PAM_IN
TP2(TXON PA)
TP1(PA LEVEL)
TP(PA_MODE)
Содержание GT350
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