PX8700
LG Electronics Inc.
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Time Reference.
A reference established by the mobile station that is synchronous with the earliest arriving
multipath component used for demodulation.
TOLR
. See Transmit Objective Loudness Rating.
Traffic Channel.
A communication path between a mobile station and base station used for user and signaling
traffic. The term Traffic Channel implies a Forward Traffic Channel and Reverse Traffic Channel pair. See also
Forward Traffic Channel and Reverse Traffic Channel.
Traffic Channel Preamble.
A sequence of all-zero frames that is sent at the 9600 bps rate by the mobile
station on the Reverse Traffic Channel. The Traffic Channel preamble is sent during initialization of the Traffic
Channel.
Transmit Objective Loudness Rating(TOLR).
A perceptually weighted transducer gain of telephone
transmitters relation sound pressure at the microphone to voltage at a reference electrical termination. It is
normally specified in dB relative to one millivolt per Pascal. See IEEE Standard 269-1992, IEEE Standard
661-1979, CCITT Recommendation P.76 , and CCITT Recommendation. P.79
Unique Challenge-Response Procedure.
An exchange of information between a mobile station and a base
station for the purpose of confirming the mobile station’s identity. The procedure is initiated by the base station
and is characterized by the use of a challenge-specific random number(i.e., RANDU) instead of the random
variable broadcast globally(RAND).
Unique Random Variable(RANDU).
A 24-bit random number generated by the base station in support of the
Unique Challenge-Response procedure.
Universal Coordinated Time(UTC).
An internationally agreed-upon time scale maintained by the Bureau
International de l’Heure(BIH) used as the time reference by nearly all commonly available time and frequency
distribution systems i.e., WWW, WWVH, LORAN-C, Transit, Omega, and GPS.
UTC.
Universal Temps Coordine. See Universal Coordinated Time.
Voice Channel
. See Analog Voice Channel.
Voice Mobile Attenuation Code(VMAC).
A 3-bit field in the Extended Address Word commanding the initial
mobile power level when assigning a mobile station to an analog voice channel.
Voice Privacy.
The process by which user voice transmitted over a CDMA Traffic Channel is a afforded a
modest degree of protection against eavesdropping over the air.
Walsh Chip.
The shortest identifiable component of a Walsh function. There are 2
N
Walsh chips in one
Walsh function where N is the order of the Walsh function. On the Forward CDMA channel one Walsh chip
equals 1/1.2288MHz, or 813.802…ns. On the Reverse CDMA Channel, one Walsh chip equals 4/1.2288MHz,
or 3.255…
㎲
.
Walsh Function
. One of 2
N
time orthogonal binary functions (note that the functions are orthogonal after
mapping ‘0’ to 1 and ‘1’ to –1).
Zone-Based Registration
. An autonomous registration method in which the mobile station registers whenever it
enters a zone that is not in the mobile station’s zone list.
㎲
.
Microsecond
Содержание PX8700
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Страница 53: ...PX8700 LG Electronics Inc 53 Circuit Diagram Waveform SBCK0 SBCK0 SBST0 SBDT0 Graph 4 1 2 c Graph 4 1 2 d ...
Страница 55: ...PX8700 LG Electronics Inc 55 Waveform Graph 4 1 2 e Graph 4 1 2 f U103 Pin U104 Pin Graph 4 1 2 g DP101 Pin ...
Страница 56: ...PX8700 LG Electronics Inc 56 Circuit ...
Страница 58: ...PX8700 LG Electronics Inc 58 Graph 4 1 2 i Graph 4 1 2 h RX0_QP RX0_IP RX0_IM Circuit Waveform RX0_QM ...
Страница 62: ...PX8700 LG Electronics Inc 62 Circuit Diagram RFT6150 PMIC 2 9V_TX 2 6V_MSMP2 circuit ...
Страница 70: ...PX8700 LG Electronics Inc 70 RF_IN Graph 4 2 1 6 RF_OUT Circuit Diagram Waveform ...
Страница 84: ...PX8700 LG Electronics Inc 84 Graph 4 2 2 5 RF_OUT RF_IN Waveform Circuit Diagram ...
Страница 90: ...4 3 1 2 Charging Trouble Circuit Diagram Test Points V_BATT Pin1 CON401 U402 ...
Страница 96: ...4 3 4 Audio 4 3 4 1 Speaker Trouble Test Points Circuit Diagram C113 U106 R144 U103 C112 C110 L103 ...
Страница 98: ...4 3 4 2 Receiver Trouble Test Points Circuit Diagram R314 U305 R315 C338 ...
Страница 100: ...4 3 4 4 Headset Trouble Circuit Diagram Test Points CON402 R405 R416 R415 C116 C115 ...
Страница 103: ...4 3 4 3 Mic Trouble Circuit Diagram Test Points R126 M101 ...
Страница 108: ...4 3 6 2 Micro SD Detect Circuit Diagram PMIC Test Points CON105 C140 C141 C138 C136 C313 C142 C139 C137 U302 ...
Страница 110: ...4 3 6 3 USB Interface Circuit Diagram U201 MSM6550 U302 Test Points R307 X202 R306 L302 C314 ...
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