Technical data
Version 8 dated 15.03.00
212
Siemens Information and Communication Products
15 Technical data
15.1 Technical data of the M20
Weight:
38 g
Output power:
2 W peak (at the RF jack of the M20)
Sensitivity:
–108 dBm (at the RF jack of the M20)
Dimensions (max):
LxWxH = 86.8 x 41.4 x 11.2 mm
Volume:
31.6 cm
3
Temperature range
Voltage supply:
Voltage supply on connection must NOT rise faster than 3V/msec.
Interfaces
GSM standards:
GSM recommendations, phase II,
Extended requirements according to class "Normal mobile station"
Environmental requirements:
According to IEC68.
MTBF value:
192 years; fit according to 595
(at 25°C, stand-by time 12 h/d and 6 d/week, including 1/6 talking time)
MMI board:
Built-in MMI software, connectors for:
– DOT display (2 lines a 16 columns)
– 4 x 6 keypad matrix
– Base-unit power supply indicator
Remote control:
V.24/RS232 interface
Drive via serial interface by means of standard AT Hayes and AT Cellular commands to GSM
07.07 and 07.05 and a number of the most useful Siemens-defined AT commands
SMS:
SMS MT, SMS MO in text and PDU mode, SMS cell broadcast
Data services:
Transparent/non-transparent data:
2.4 kbit/s, 4.8 kbit/s, 9.6 kbit/s,
V.42bis data compression
Transparent fax: class 1 group 3
2.4 kbit/s, 4.8 kbit/s, 9.6 kbit/s
Storage temperature
–40°C to +90°C
Dwell: 1 h, packaged
Thermostable
–40°C to +80°C
Temperature cycle: 10 cycles
Dwell: 2 h at T
u
and T
o
Operation with voltage
supply
–20°C to +55°C
Fully functional and retaining data
Single voltage supply
6.0 V + 0.2 V, arithmetic mean: I < 250 mA
(I < 2 A. pulsed t = 577
µ
s, at T = 4.615ms)
All interfaces
80-pin SMD connector