LG LG- PX240 User manual
CHAPTER 1. System Introduction
1. Specification
1.1 General Specification
1.1.1 Transmit/Receive Frequency Interval
1) CELLULAR : 70MHz
2) PCS : 140 MHz
1.1.2 Number of Channels (Channel Bandwidth)
1) CELLULAR : 20 Channels
2) PCS : 48 Channels
1.1.3 Operating Voltage : DC 3.3~4.2V
1.1.4 Battery Power Consumption : DC 3.7V
SLEEP IDLE MAX POWER
CELLULAR 1.5 mA 110 ~ 120mA 700 mA (24 dBm)
PCS 1.5 mA 120 ~ 130 mA 700 mA (24 dBm)
1.1.5 Operating Temperature : -30°C ~ +60°C
1.1.6 Frequency Stability
1) CDMA : ±0.5PPM
2) PCS : ±0.1PPM
1.1.7 Antenna : Internal Antenna
1.1.8 Size and Weight
1) Size : 89(H) * 49(W) * 21.5(D) mm
2) Weight : 80 g (Approximately with standard battery)
1.1.9 Channel Spacing
1) CELLULAR : 1.25MHz
2) PCS : 1.25 MHz
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1.1.10 Battery Type, Capacity and Operating Time.
Unit = Hours : Minutes
Standard (800mAh)
CELLULAR 140 Hrs (Slotted mode 2, sector
pwr :-75dBm)
Standby Time
PCS 140 Hrs (Slotted mode 2, sector
pwr :-75dBm)
CELLULAR 150 minute (Rx Power -92dBm, Half rate)
Talk time PCS 150 minute (Rx Power -92dBm, Half rate)
1.2 Receive Specification
1.2.1 Frequency Range
1) CELLULAR : 869 MHz ~ 894 MHz
2) PCS : 1930 MHz ~ 1990 MHz
3) GPS : 1575.42 MHz
1.2.2 Local Oscillating Frequency Range :
1) CELLULAR : 1738.08 MHz ~ 1787.94 MHz
2) PCS : 1715.56 MHz ∼1768.89 MHz
3) GPS : 3150.84 MHz
1.2.3 Sensitivity
1) CELLULAR : -104 dBm (C/N 12dB or more)
2) PCS : -104 dBm (C/N 12dB or more)
3) GPS : -148.5 dBm (w/o SA), -152 dBm (w/SA)
1.2.4 Selectivity
1) CELLULAR : 3dB C/N Degration (With Fch±1.25 KHz : -30dBm)
2) PCS : 3dB C/N Degration (With Fch±1.25 KHz : -30dBm)
1.2.5 Interference Rejection
1) Single Tone : -30dBm at 900 kHz (CELLULAR), -30dBm at 1.25MHz(PCS)
2) Two Tone : -43dBm at 900 kHz & 1700kHz(CELLULAR), -43dBm at 1.25 MHz & 2.05 MHz
1.2.6 Spurious Wave Suppression : Maximum of -80dB
1.2.7 CDMA Input Signal Range
zDynamic area of more than -104~ -25 dB: 79dB at the 1.23MHz band.
zTransmit Band : below –60dBm
zReceive Band : below –80dBm
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1.3 Transmit Specification
1.3.1 Frequency Range
1) CELLULAR : 824MHz ~ 849MHz
2) PCS : 1850 MHz ~ 1910 MHz
1.3.2 Output Power
1) CELLULAR : 0.251 W
2) PCS: 0.251 W
1.3.3 CDMA TX Frequency Deviation :
1) CELLULAR: +300Hz or less
2) PCS: ±150Hz
1.3.4 CDMA TX Conducted Spurious Emissions
1) CELLULAR : 900kHz : - 42 dBc/30kHz below
1.98MHz : - 54 dBc/30kHz below
2) PCS : -42 dBc / 30KHz below
1.3.5 CDMA Minimum TX Power Control
1) CELLULAR : - 50dBm below
2) PCS: -50dBm below
1.4 MS (Mobile Station) Transmitter Frequency
1.4.1 CELLULAR mode
Ch # Center Freq. (MHz) Ch # Center Freq. (MHz)
1011
29
70
111
152
193
234
275
316
363
824.640
825.870
827.100
828.330
829.560
830.790
832.020
833.250
834.480
835.890
404
445
486
527
568
609
650
697
738
779
837.120
838.350
839.580
840.810
842.040
843.270
844.500
845.910
847.140
848.370
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1.4.2 PCS mode
Ch # Center Freq (MHz) Ch # Center Freq (MHz) Ch # Center Freq (MHz)
25 1851.25 425 1871.25 825 1891.25
50 1852.50 450 1872.50 850 1892.50
75 1853.75 475 1873.75 875 1893.75
100 1855.00 500 1875.00 900 1895.00
125 1856.25 525 1876.25 925 1896.25
150 1857.50 550 1877.50 950 1897.50
175 1858.75 575 1878.75 975 1898.75
200 1860.00 600 1880.00 1000 1900.00
225 1861.25 625 1881.25 1025 1901.25
250 1862.50 650 1882.50 1050 1902.50
275 1863.75 675 1883.75 1075 1903.75
300 1865.00 700 1885.00 1100 1905.00
325 1866.25 725 1886.25 1125 1906.25
350 1867.50 750 1887.50 1150 1907.50
375 1868.75 775 1888.75 1175 1908.75
1.5 MS (Mobile Station) Receiver Frequency
1.5.1 CELLULAR mode
Ch. # Center Freq. (MHz) Ch. # Center Freq. (MHz)
1011
29
70
111
152
193
234
275
316
363
869.640
870.870
872.100
873.330
874.560
875.790
877.020
878.250
879.480
880.890
404
445
486
527
568
609
650
697
738
779
882.120
883.350
884.580
885.810
887.040
888.270
889.500
890.910
892.140
893.370
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1.5.2 PCS mode
Ch # Center Freq (MHz) Ch # Center Freq (MHz) Ch # Center Freq (MHz)
25 1931.25 425 1951.25 825 1971.25
50 1932.50 450 1952.50 850 1972.50
75 1933.75 475 1953.75 875 1973.75
100 1935.00 500 1955.00 900 1975.00
125 1936.25 525 1956.25 925 1976.25
150 1937.50 550 1957.50 950 1977.50
175 1938.75 575 1958.75 975 1978.75
200 1940.00 600 1960.00 1000 1980.00
225 1941.25 625 1961.25 1025 1981.25
250 1942.50 650 1962.50 1050 1982.50
275 1943.75 675 1963.75 1075 1983.75
300 1945.00 700 1965.00 1100 1985.00
325 1946.25 725 1966.25 1125 1986.25
350 1947.50 750 1967.50 1150 1987.50
375 1948.75 775 1968.75 1175 1988.75
1.5.3 GPS mode
- Center Freq. : 1575.42MHz
1.6 AC Adapter : See Appendix
1.7 Cigarret Lighter Adapter : See Appendix
1.8 Portable Hands-Free Kit : See Appendix
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2. Installation
2.1 Installing a Battery Pack
1) The Battery pack is keyed so it can only fit one way. Align the groove in the battery pack with the rail on the
back of the phone until the battery pack rests flush with the back of the phone.
2) Slide the battery pack forward until you hear a “click”, which locks the battery in place.
2.2 For Adapter Use
1) Plug the adapter into a wall outlet. The adapter can be operated from a 110V source. When AC power is
connected to the adapter.
2) Insert the adapter jack into the phone with the installed battery pack.
Red light indicates battery is being charged.. Green light indicates battry is fully charged.
2.3 For Mobile Mount
2.3.1 Installation Position
In order to reduce echo sound when using the Hands-Free Kit, make sure that the speaker and microphone are
not facing each other and keep microphone a generous distance from the speaker.
2.3.2 Microphone Installation
Install the microphone either by clipping I onto the sunvisor (driver’s side) or by attaching it to door post
(driver’s side), using a velcno adhesive tape (not included).
2.3.3 Cable Connections
2.3.3.1 Power and Ignition Cables
Connect the red wire to the car battery positive terminal and the black wire to the car ground. Connect the
green wire to the car ignition sensor terminal. ( In order to operate HFK please make sure to connect green wire
to ignition sensor terminal.) Connect the kit’s power cable connector to the interface box power receptacle.
2.3.3.2 Antenna Cable Connection
Connect the antenna coupler cable connector from the cradle to the external antenna connector. ( Antenna is
not included.)
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CHAPTER 2. NAM Input Method
(Inputting of telephone numbers included)
1. NAM Program Method and Telephone Number Inputting Method
1) NAM Programming Method
Enter ‘MENU’-Press “#” Press “0” Press “000000”
ÎÎÎ
Press “2” Press “953047”
ÎÎÎ
1.Check ESN, and Press “OK” button. (Read only)
2.Press ‘2’ on keypad for entering PHONE NUMBER.
Edit OK
ÎÎ
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12. Press ‘#’ on keypad for Checking Home SID/NID, and Press “OK” button.
If you want to change SID, Locate Black Mark in the SID with UP or Down button, and
Press “OK” button, and Insert SID Number. For NID Change, do the same way as SID
change.
13. Choose Lockout SID/NID for entering – The action is same as Home SID/NID.
14. Choose CDMA Preferred CH for entering - Insert the NAM 1 CDMA Primary CH B,
and press ‘OK’ button
15. Choose Home Sys Reg for entering - Use ‘UP’ or ‘DOWN’ key to select Yes or No
and then press ‘OK’ button.
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16. Choose Forn SID Reg/Form NID Reg for entering - Use “UP” or “DOWN” key to select
Yes or No and then Press “OK” button.
17. Choose Slot Cycle Idx for entering - Insert Slot Cycle Index, and Press “OK” button.
18. Choose Acc Ovld Class for entering - Insert the NAM Access Overload Class, and
Press “OK” button.
19. Choose Phone Model for entering - Check Phone Model, and Press “OK” button.
20. Choose Minlock for entering
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CHAPTER 3. Circuit Description
1. RF Transmit/Receive Part
1.1 Overview
The Tx and Rx part employs the Direct-Conversion system. The Tx and Rx frequencies are respectively
824.04~848.97 and 869.04~893.97 for cellular and 1850~1910 and 1930~1990 for PCS. The block diagram is
shown in [Figure 1-1]. RF signals received through the antenna are seperated by the Quintplexer.
RF Signal fed into Skyworks RX MCM(SKY 74609) through the Quintplexer. In RX MCM, the IF signal is
changed into baseband signal directly. Then, this signal is changed into digital signal by the analog to digital
converter (ADC, A/D Converter), and the digital circuit part of the MSM(Mobile Station Modem) 6050
processes the data from ADC. The digital processing part is a demodulator.
In the case of transmission, TX MCM(SKY 74709) receives OQPSK-modulated anlaog signal from the
MSM6050. The TX MCM connects directly with MSM6050 using an analog baseband interface. In TX MCM,
the baseband quadrature signals are upconverted to the Cellular or PCS frequency bands and amplified to
provide signal drive capability to the power amp.
After that, the RF signal is amplified by the TX MCM in order to have enough power for radiation. Finally,
the RF signal is sent out to the cell site via the antenna after going through the Quintplexer.
MX240 Block Diagram
MX240 Block Diagram
Rx VCO Frequency
DCN : 1738.08 ~1787.94 MHz
PCS : 1715.56 ~ 1768.89 MHz
GPS : 3150.84 MHz
SBI 1
SKY74709
LO Distribution
LPF
LPF
SBI
RX PLL
TX PLL
SKY74609
S/W
LPF
LPF
U1003
Mobile SW
KMS-506
ANT1001
Internal
Antenna
U1502
SKY74709
F1501
GPS RF SAW
B9000
F1301
VCTCXO
DSA321SA-19.2M
U1102
SKY74609
MSM6050
SBI
CDMA processor
DFM processor
Memory
controller
QDPS4000
-VOCODER
-MIDI(CMX)etc.
CODEC
GPIO
ARM7 core
gpsOne
processor
EARPIECE
MIC
USB
RxADCs
TxDACs
USB controller
R-UIM controller
RF interface
PLL
HK ADC
JTAG
interface
KEYPAD
U1501
GPS LNA
ALM-1106-TR1
256M+64M
MCP
(SHARP)
LCD
MODULE
( MAIN : 65K CSTN
SUB : MONO STN )
U1004
QUINTPLEXER
ACFM-7101
U6014
COUPLER
CP0603A0836
U6010
POWER DETECTOR
MAX2208EBS
To MSM6050 ADC
U401
Power
Management IC
(MAX1827)
U4201
Audio Amp.
LM4990
U4202
SPDT
Switch
NLAS5223
SPEAKER
U3101
Camera DSP
Ararion
( MAIN : 65K TFT-LCD
SUB : Color CSTN )
30M VGA
CMOS
SBI 2
U2002
[Figure 1-1] Block Diagram Of MX240
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1.2 Description of Receive Part Circuit
1.2.1 Quintplexer (U1004)
The ACFM-7101 is a Quintplexer that combines a US PCS duplexer, a cellular band duplexer and a GPS
band filter into a single, miniature package with a single antenna port.
The main function of Quintplexer(ACFM-7101) is to prohibit the other band signals from flowing into the
one band circuit and vice versa. RF designer can use common tri-band antenna regardless of frequency band
(800, 1575 and 1900 MHz). The specification of MX240 Quintplexer is described below:
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1.2.2 RX MCM (SKY74609: U1502)
The SKY74609 receiver is a highly integrated device for tri-band, dual-mode Code Division Multiple Access
(CDMA) handsets with Global Positioning System (GPS) capability. The SKY74609 supports CDMA phones in
the cellular CDMA, Personal Communications System (PCS), and GPS modes. The device requires a minimum
number of external components to complete a CDMA radio subsystem. Included on-chip are the down converter,
base band filters with auto-tuning loop, UHF Voltage Controlled Oscillator (VCO), RF Phase Locked
Loop(PLL),and DC Offset Compensation (DCOC).External components needed for operation include matching
networks for differential mixer inputs and differential GPS Low Noise Amplifier (LNA) inputs, CDMA/PCS
Surface Acoustic Wave (SAW) filters, three bias resistors for accurate bias control over process variation, and
two high tolerance load resistors for In- Phase and Quadrature (I/Q) baseband output. The SKY74609 output is a
dual-channel, fully differential analog signal at the baseband. Both channels maintain a quadrature phase
relationship with each other.
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1.2.3 TX MCM (SKY74709: U1102)
The SKY74709 transmitter is a highly integrated device designed for dual-band, single-mode CDMA handsets
in the cellular CDMA and Personal Communications System (PCS) modes. The SKY74709 includes interstage
transmit Surface Acoustic Wave (SAW) filters and separate CDMA and PCS Gallium Arsenide
(GaAs) Microwave Monolithic Integrated Circuit (MMIC) Power Amplifiers (PAs). The device meets the
stringent CDMA linearity requirements up to 28 dBm output power. The incoming CDMA baseband signal is
upconverted to the desired RF frequency by the In-Phase and Quadrature (I/Q) modulator and amplified by the
appropriate PA driver stage to provide variable output power. The signal is filtered by an interstage transmit
SAW filter and sent to the respective PA to obtain the final rated power.
The only external components needed to complete a CDMA radio subsystem are supply bypass capacitors and
filtering capacitors at the I/Q inputs. The required Phase Lock Loop (PLL) filter and bias resistors have been
included on-chip. The state of the PAs is controlled by the SKY74709, which eliminates the need for
external switches to enable/disable the PAs and control their gain. The SKY74709 is designed to operate within
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