Motorola M3682, Service Manual

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European Customer Services 6
M3682
2.1 Specifications of M3682
General
Function Specification
Frequency Range GSM PCS 1850.2 - 1909.8 MHz Tx
1930.2 - 1989.8 MHz Rx
Channel Spacing 200 kHz
Channels 174 GSM/374 DCS carriers with 8 channels per carrier
Modulation GMSK at BT = 0.3
Transmitter Phase Accuracy 5 Degrees RMS, 20 Degrees peak
Duplex Spacing 45 MHz GSM 95Mhz DCS
Frequency Stability + 0.10 ppm of the downlink frequency (Rx)
Operating Voltage +4.0V dc to +6.0V dc (battery)
+6.7V dc to +8.6V dc (external connector)
Transmit Current Typically 250 ma avg, 1.0A peak
Stand-by Current Typically 7.0 ma (DRX2)
Dimensions 140mm X 50mm X 25mm
Size (Volume) 155 cc
Weight 168 g
Temperature Range -10C to +55C
Transmitter
Function Specification
RF Power Output 33 dBm + 2dB GSM/ 30 dBm + 2 dB DCS
Output Impedance 50 ohms (nominal)
Spurious Emissions -36 dBm from 0.1 to 1 Ghz
-30 dBm from 1 to 4 Ghz
Receiver
Function Specification
RF Level -102 dBm
RX bit error rate (100 k bits) < 2%
Channel Hop Time 500 microseconds
Time to Camp Approximately 5-10 seconds
Speech Coding
Function Specification
Speech Coding Type Regular Pulse Excitation / Linear Predictive Coding with Long
Term Prediction. (RPE LPC with LTP).
Bit Rate 13.0 k bps
Frame Duration 20 ms
Block Length 260 bits
Classes Class 1 bits = 182 bits. Class 2 bits = 78 bits
Bit Rate with FEC Encoding 22.8 k bps