MC45 Hardware Interface Description
P R E L I M I N A R Y
MC45_HD_01_V00.02a
Page 86 of 90
12.08.2002
6.6 Air interface
Test conditions: All measurements have been performed at T
amb
= 25°C, V
BATT+ nom
= 4.1V.
The reference points used on MC45 are the BATT+ and GND contacts (test points are
shown in Figure 29).
Table 34: Air Interface
Parameter
Min
Typ
Max
Unit
E-GSM 900
880
915
MHz
Frequency range
Uplink (MS
®
BTS)
GSM 1800
1710
1785
MHz
GSM 1900
1850
1910
MHz
E-GSM 900
925
960
MHz
Frequency range
Downlink (BTS
®
MS)
GSM 1800
1805
1880
MHz
GSM 1900
1930
1990
MHz
E-GSM 900
31
33
35
dBm
RF power @ ARP with 50
Ω
load
GSM 1800
28
30
32
dBm
GSM 1900
28
30
32
E-GSM 900
174
Number of carriers
GSM 1800
374
GSM 1900
299
E-GSM 900
45
MHz
Duplex spacing
GSM 1800
95
MHz
GSM 1900
80
Carrier spacing
200
kHz
Multiplex, Duplex
TDMA / FDMA, FDD
Time slots per TDMA frame
8
Frame duration
4.615
ms
Time slot duration
577
µs
Modulation
GMSK
E-GSM 900
-102
-105
dBm
GSM 1800
-102
-105
dBm
Receiver input sensitivity @ ARP
BER Class II < 2.4%
GSM 1900
-102
-105
dBm