
6881039B15
August 01, 2001
5
Level 1 and 2 Service Manual
Specifications
PRELIMINARY
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
Channel Spacing
200 kHz
Channels
174 EGSM
Modulation
GMSK at BT = 0.3
Transmitter Phase Accuracy
5 Degrees RMS, 20 Degrees peak
Duplex Spacing
45 MHz
Frequency Stability
± 0.10 ppm of the downlink frequency (Rx)
Operating Voltage
+3.0V dc to +5.1V dc (battery)
3.6V, 600mA (external connector)
Transmit Current
185 - 250 mA average talk current drain
Stand-by Current
Typically 6mA (DRX2),4mA (DXR9)
Dimensions,
106 mm x 40 mm x 16 mm
(4.17 inches X 1.57 inches X.63 inches)
Size (Volume)
68 cc (x.x in
3
), with 500 mAh battery
Weight
85 gm (2.9 oz), with 500 mAh battery
Temperature Range
-10° C to +55° C (+15° F to +130° F)
Battery Life, 550 Ni Mh Battery
Talk Time 120 to 300 minutes
Standby 50 to 120 hours
Battery Charge Time
3 Hours
Alert Volume
95 dB @ 5 cm
Transmitter Function
Specification
RF Power Output
33 dBm nominal GSM 900, 30 dBm nominal GSM 1800
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 -103 dBm
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
Содержание C25
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