Company Confidential s Com
Copyright 2005© Siemens AG
Page 12 of 53
TD_Repair_L2.5_A70_A75_R1.0.pdf Release 1.0
Bright 6E
VCXO Out
EGOLD In
To compensate frequency drifts (e.g. caused by temperature) the oscillator frequency is
controlled by the (RF_AFC) signal, generated through the internal EGOLDlite (D171
(A10))
PLL. Reference for the “EGOLD-PLL” is the base station frequency received via the
Frequency Correction Burst.
The required voltage VDD_RF2 is provided by the ASCI D361
Waveform of the AFC_PNM signal from EGOLDlite to Oscillator
EGOLD+
GND
GND
R2
RF_AFC
Signalform
C1
C2
AFC_PNM
GND
C3
R3
1 2 3
1
2
3
R1
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