Features - Sony Ericsson GR47/GR48 Integrator's Manual

2.3 Features

2.3.1 Types of Mobile Station
GR47
Frequency Range (MHz)
Channel spacing
Number of channels
Modulation
TX phase accuracy
Duplex spacing
Receiver sensitivity at
antenna connector
Transmitter output power at
antenna connector
Automatic hand-over between E-GSM 900 and GSM 1800
GR48
Frequency Range (MHz)
Channel spacing
Number of channels
Modulation
TX Phase Accuracy
LZT 123 7589 R1A
2. GR47/GR48 RADIO DEVICES
The functions of the radio device follow the recommendations provided by
ETSI (European Telecommunications Standards Institute) and ITU-T.
ETSI specifies a set of AT commands for controlling the GSM element of
the radio device; these commands are supplemented by Sony Ericsson
specific commands.
To find out how to work with AT commands, see the AT Commands
Manual.
The radio device performs a set of telecom services (TS) according to GSM
standard phase 2+, ETSI and ITU-T. The functions of the radio device are
implemented by issuing AT commands over a serial interface.
GR47 and GR48 are dual band mobile stations with the characteristics
shown in the tables below.
E-GSM 900
TX: 880-915
RX: 925-960
200 kHz
174 carriers *8 time slots
GMSK
< 5º RMS phase error (burst)
45 MHz
< –102 dBm
Class 4
2 W (33 dBm)
GSM 850
TX: 824-849
RX: 869-894
200 kHz
124 carriers *8 time slots
GMSK
< 5º RMS phase error (burst)
GSM 1800
TX: 1710-1785
RX: 1805-1880
200 kHz
374 carriers *8 time slots
GMSK
< 5º RMS phase error (burst)
95 MHz
< –102 dBm
Class 1
1 W (30 dBm)
GSM 1900
TX: 1850-1910
RX: 1930-1990
200 kHz
299 carriers *8 time slots
GMSK
< 5º RMS phase error (burst)
9