Motorola TIMEPORT 280, Service Manual

Page: 9 / 64

6881038B15 May 14, 2001 5
Level III Service Manual Specifications
Specifications
General Function Specification
Frequency Range GSM 880-915 MHz Tx (with EGSM)
925-960 MHZ Rx
Frequency Range DCS 1710-1785 MHz Tx
1805-1880 MHz Rx
Frequency Range PCS 1850.2-1909.8 MHz Tx
1930.2-1989.8 MHz Rx
Channel Spacing 200 kHz
Channels 174 EGSM, 374 DCS, 274 PCS carriers with 8 ch. per carrier
Modulation GMSK at BT = 0.3
Transmitter Phase Accuracy 5 Degrees RMS, 20 Degrees peak
Duplex Spacing 45 MHz GSM, 95 MHz DCS, 80 MHz PCS
Frequency Stability ± 0.10 ppm of the downlink frequency (Rx)
Operating Voltage +3.0V dc to +5.1V dc (battery)
+4.4V dc to +6.5V dc (external connector)
Transmit Current 185 - 250 mA average talk current drain
Stand-by Current Typically 4.95 mA (DRX2), 3 mA (DXR9)
Dimensions, with 500 mAh LI Ion batt 49 mm x 24 mm x 125 mm (1.9 inches X 0.9 inches X 4.8
inches)
Size (Volume) 98.5 cc (5.9 in
3
), with 500 mAh battery
104.5 cc (6.3 in
3
), with 800 mAh battery
Weight 109 gm (3.9 oz), with 500 mAh battery
119 gm (4.2 oz), with 800 mAh battery
Temperature Range -10° C to +55° C (+15° F to +130° F)
Battery Life, 500 mAh LI Ion Battery Talk Time 120 to 162 minutes
Standby 96 to 158 hours
Battery Life, 800 mAh LI Ion Battery Talk Time 192 to 259 minutes
Standby 153 to 253 hours
Transmitter Function Specification
RF Power Output 33 dBm nominal GSM, 30 dBm nominal DCS / PCS
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
Receive Sensitivity Better than -105 dBm GSM / DCS / PCS
RX bit error rate (100k bits) Type II < 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 kbps
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 kbps