User's Manual

Confidential
INTERFACE DESCRIPT
10(31)
Document number Revision
1/155 19-KRD 104 1025 Uen PA4
2.3 Features
The EDGE modem performs a set of telecom services (TS) according to GSM standard
phase 2+, ETSI and ITU-T. The functions of the modem are implemented by issuing AT
commands over a serial interface.
2.3.1 Mobile Station Characteristics
The EDGE modem can be configured for single, dual, triple and quad band GSM
functionality. The quad band characteristics of the EDGE modem are shown in the
following table.
EDGE MODEM GSM850 E-GSM900 GSM1800 GSM1900
Frequency range (MHz)
TX: 824-849
RX: 869-894
TX: 880-915
RX: 925-960
TX: 1710-1785
RX: 1805-1880
TX: 1850-1910
RX: 1930-1990
Channel spacing 200kHz
Number of channels 123 x 8 (TDMA) 173 x 8 (TDMA) 373 x 8 (TDMA) 298 x 8 (TDMA)
Duplex spacing 45MHz 95MHz 80MHz
GSM/GPRS GMSK
Modulation
EDGE 8-PSK
Nom. TBD
Tx phase accuracy
(burst)
Max. <5° rms phase error ; <20° max peak phase error
100KHz <+0.5dB
200KHz <-30dB
250KHz <-33dB
Tx Spectrum Due to
Modulation
400KHz <-58dB
100KHz <-23dBm
200KHz <-26dBm
250KHz <-32dBm
Tx Spectrum Due to
Switching Transients
400KHz <-36dBm
Receiver sensitivity (ANT pin) <-102dBm <-102dBm <-102dBm <-102dBm
Class Class 4 Class 1
GSM
Nom. +33dBm +30dBm
Class Class E2 Class E2
Transmitter
output power
(ANT conn) EDGE
Nom.
+27dBm +26dBm
Nom.
1
<-104dBm <-104dBm <-104dBm <-104dBm Receiver sensitivity
(ANT connector)
Max. <-102dBm <-102dBm <-102dBm <-102dBm
f
1
-49dBm
Rx Intermodulation
F
0
= 2f
1
-f
2
;
|f
2
–f
1
| = 800KHz
f
2
-49dBm
GPRS operation Class 10
1 - Design aim
Note that the number of frequency bands available will be dependant upon the factory
configuration.