Sony Ericsson T20e - page 27

27
PP
PPee eerr rrffffoo oorr rrmm mmaa aann nncc ccee ee AA AAnn nndd dd TT TTee eecc cchh hhnn nniiiicc ccaa aallll CC CChh hhaa aarr rraa aacc ccttttee eerr rriiiiss ssttttiiiicc ccss ss
Dimension GSM 900/E-GSM 900 GSM 1800
Frequency range TX: 880 – 914 MHz
RX: 925 – 959 MHz
TX: 1710 – 1785
RX: 1805 – 1880
Channel spacing 200 kHz 200 kHz
Number of channels 174 Carriers *8 (TDMA) 374 Carriers *8 (TDMA)
Modulation GMSK GMSK
TX Phase Accuracy < 5º RMS Phase error (burst) < 5º RMS Phase error (burst)
Duplex spacing 45 MHz 95 MHz
Frequency stability +/- 5 ppm (downlink RX) +/- 175 Hz (downlink RX)
Voltage operation (nominal) 3.0 Volts 3.0 Volts
Transmitter RF power out-
put
33 dBm Class 4 (2W peak) 30 dBm Class 1 (1W peak)
Transmitter Output imped-
ance
50 Ω 50 Ω
Transmitter Spurious emis-
sion
< -36 dBm up to 1 GHz
< -30 dBm over 1 GHz
(according to GSM spec.)
< - 30 dBm
(according to GSM spec.)
Receiver RF level Better than – 102 dBm -100 dBm
Receiver RX Bit error rate < 2% < 2.43%
*) No DTX activated