3. TECHNICAL BRIEF
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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.
Содержание G1610
Страница 1: ...Service Manual Model G1610 Service Manual G1610 P N MMBD0045701 Date February 2005 Issue 1 0 ...
Страница 52: ...4 TROUBLE SHOOTING 51 Graph 4 14DCS TX Graph 4 15EGSM TX VC1 VC2 VC1 VC2 VC1 VC2 VC1 VC2 ...
Страница 70: ...5 DISASSEMBLY INSTRUCTION 69 5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 ...
Страница 71: ...5 DISASSEMBLY INSTRUCTION 70 Figure 5 3 Figure 5 4 ...
Страница 72: ...5 DISASSEMBLY INSTRUCTION 71 Figure 5 5 ...
Страница 73: ...5 DISASSEMBLY INSTRUCTION 72 Figure 5 6 1 3 2 4 Figure 5 7 1 2 3 ...
Страница 74: ...5 DISASSEMBLY INSTRUCTION 73 Figure 5 8 4 2 3 1 2 1 Figure 5 9 ...
Страница 75: ...5 DISASSEMBLY INSTRUCTION 74 Figure 5 10 ...
Страница 82: ...6 DOWNLOAD AND CALIBRATION 81 11 Wait until Sending Block is completed 1 Wait Until Sending Block is completed ...
Страница 86: ...7 BLOCK DIAGRAM 85 7 BLOCK DIAGRAM Power supply ...
Страница 87: ... 86 ...
Страница 101: ...11 STAND ALONE TEST 100 11 2 Standalone Test Equipment Setup GSM Test Equipment Power Supply RS 232 Cable PC JIG Phone ...
Страница 108: ...12 AUTO CALIBRATION 107 12 3 Equipment Setup Figure 12 1 Equipment Setup ...
Страница 111: ...12 AUTO CALIBRATION 110 ...
Страница 113: ...13 EXPLODED VIEW REPLACEMENT PART LIST 112 ...