Specifications

AC65/AC75 Hardware Interface Description
5.8 Air Interface
s
AC65_AC75_HD_v01.002 Page 97 of 117 2006-10-30
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5.8 Air Interface
Test conditions: All measurements have been performed at T
amb
= 25×C, V
BATT+ nom
= 4.0V. The reference points
used on AC65/AC75 are the BATT+ and GND contacts (test points are shown in Figure 4).
Table 34: Air interface
Parameter Min Typ Max Unit
Frequency range
Uplink (MS --> BTS)
GSM 850 824 849 MHz
E-GSM 900 880 915 MHz
GSM 1800 1710 1785 MHz
GSM 1900 1850 1910 MHz
Frequency range
Downlink (BTS --> MS)
GSM 850 869 894 MHz
E-GSM 900 925 960 MHz
GSM 1800 1805 1880 MHz
GSM 1900 1930 1990 MHz
RF power @ ARP with 50
Ω load GSM 850 313335dBm
E-GSM 900
1
1.
Power control level PCL 5
31 33 35 dBm
GSM 1800
2
2.
Power control level PCL 0
28 30 32 dBm
GSM 1900 28 30 32 dBm
Number of carriers GSM 850 124
E-GSM 900 174
GSM 1800 374
GSM 1900 299
Duplex spacing GSM 850 45 MHz
E-GSM 900 45 MHz
GSM 1800 95 MHz
GSM 1900 80 MHz
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
Receiver input sensitivity @ ARP
BER Class II < 2.4% (static input level)
GSM 850 -102 -108 dBm
E-GSM 900 -102 -108 dBm
GSM 1800 -102 -107 dBm
GSM 1900 -102 -107 dBm