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(2) BB Transmit Section
This section generates in-phase and quadrature BB modulated GMSK signals (BT = 0.3) in
accordance with GSM 05.05 Phase 2 specifications.
The transmit channel consists of a digital GMSK modulator, a matched pair of 10-bit DACs
and a matched pair of reconstruction filter.
There are TXIP, TXIN, TXQP, TXQN, and RAMPDAC.
(3) BB Receiver Section
This section consists of two identical ADC channels that process baseband in-phase (I) and
quadrature (Q) input signals.
Each channel consists of a coarse switched capacitor input filter, followed by a high-order
sigma-delta modulator and a lowpass digital filter.
There are RXIP, RXIN, RXQP, and RXQN.
(4) Auxiliary Section
This section contains two auxiliary DACs (AFC DAC, IDAC) for system control.
This section also contains AUX ADC and Voltage Reference
AUX ADC : 6 channel 10 bits
AFC DAC : 13 bits
IDAC
: 10 bits
(5) Voiceband Section
Receive audio signal from MIC. The phones use differential configuration.
Send audio signal to Receiver. The phones use differential configuration.
It interconnects external devices such as main microphone, main receiver, ear-phone and
Hands free kit through the VINNORP, VINNORN, VOUTNORP, VOUTNORN, VINAUXP,
VINAUXN, VOUTAUXP, and VOUTAUXN
VINNORP, VINNORN
: Main MIC positive/negative terminal.
VOUTNORP, VOUTNORN : Main Receiver positive/negative terminal.
VINAUXP, VINAUXN
: Hands free kit microphone positive/negative terminal.
VOUTAUXP, VOUTAUXON : Hands free kit speaker positive/negative terminal.
3. TECHNICAL BRIEF
Summary of Contents for C3100
Page 1: ...Service Manual Model C3100 Service Manual C3100 P N MMBD0033001 Date June 2004 Issue 1 0 ...
Page 51: ...Graph 4 15 EGSM TX 50 VCX VC2 VCX VC2 4 TROUBLE SHOOTING Graph 4 14 DCS TX ...
Page 67: ...5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 66 5 DISASSEMBLY INSTRUCTION ...
Page 68: ... 67 5 DISASSEMBLY INSTRUCTION Figure 5 3 Figure 5 4 ...
Page 69: ... 68 Figure 5 5 5 DISASSEMBLY INSTRUCTION ...
Page 70: ... 69 5 DISASSEMBLY INSTRUCTION Figure 5 6 Figure 5 7 1 3 2 4 1 2 3 ...
Page 71: ... 70 Figure 5 8 Figure 5 9 5 DISASSEMBLY INSTRUCTION 4 2 3 1 2 1 ...
Page 72: ... 71 5 DISASSEMBLY INSTRUCTION Figure 5 10 ...
Page 83: ... 82 7 BLOCK DIAGRAM 7 BLOCK DIAGRAM Power supply ...
Page 90: ... 89 9 PCB LAYOUT 9 PCB LAYOUT ...
Page 91: ... 90 9 PCB LAYOUT ...
Page 98: ... 97 11 3 HW Test Software for Standalone Test Setup 11 STAND ALONE TEST ...
Page 100: ... 99 Tx Stand alone Test Setting 11 STAND ALONE TEST ...
Page 102: ... 101 Rx Stand alone Test Setting 11 STAND ALONE TEST ...
Page 104: ... 103 12 3 Equipment Setup Figure 12 1 Equipment Setup 12 AUTO CALIBRATION ...
Page 107: ... 106 12 AUTO CALIBRATION ...
Page 109: ... 108 13 EXPLODED VIEW REPLACEMENT PART LIST ...