User's Manual

Telit TRIZIUM Product Description
80264ST10007a Rev. 4– 09/09/04
Reproduction forbidden without DAI Telecom written authorization – All Right reserved – Right of modification reserved page 13 of 202
2.4 Operating Frequency
The operating frequencies in GSM, DCS, PCS modes are conform to the GSM specifications.
Mode Freq. TX (MHz) Freq. RX (MHz) Channels (ARFC) TX - RX offset
E-GSM-900 890.0 - 914.8 935.0 - 959.8 0 – 124 45 MHz
880.2 - 889.8 925.2 - 934.8 975 - 1023
DCS-1800 1710.2 - 1784.8 1805.2 - 1879.8 512 – 885 95 MHz
PCS-1900 1850.2 - 1909.8 1930.2 - 1989.8 512 - 810 80 MHz
2.5 Transmitter output power
GSM–900
The Telit TRIZIUM transceiver module in GSM–900 operating mode are of class 4 in accordance with the specification
which determine the nominal 2W peak RF power (+33dBm) on 50 Ohm.
DCS–1800
The Telit TRIZIUM transceiver module in DCS–1800 operating mode are of class 1 in accordance with the specifications
which determine the nominal 1W peak RF power (+30dBm) on 50 Ohm.
PCS–1900
The Telit TRIZIUM transceiver module in PCS–1900 operating mode are of class 1 in accordance with the specifications
which determine the nominal 1W peak RF power (+30dBm) on 50 Ohm.
2.6 Reference sensitivity
GSM–900
The sensitivity of the Telit TRIZIUM transceiver module according to the specifications for the class 4 GSM–900
portable terminals is better than –102dBm in all the operational conditions.
DCS–1800
The sensitivity of the Telit TRIZIUM transceiver module according to the specifications for the class 1 portable terminals
GSM 1800 is better than –102dBm in normal operating conditions.
PCS–1900
The sensitivity of the Telit TRIZIUM transceiver module according to the specifications for the class 1 portable terminals
PCS 1900 is better than –102dBm in normal operating conditions.
2.7 Antenna
The antenna that the customer chooses to use, depending on his application, should fulfil the
following requirements:
Frequency range
Standard Dual Band frequency range,
Standard Tri Band frequency range
Bandwith
80 MHz in GSM & 170 MHz in DCS & 140 MHz
PCS band
Gain
> 0 dBi; < 3 dBi
Impedance
50 ohm
Input power
> 2 W peak power
VSWR absolute max
<= 10:1
VSWR recommended
<= 2:1