Technical data
Version 8 dated 15.03.00 212
Siemens Information and Communication Products
A
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 = 577µs, at T = 4.615ms)
All interfaces 80-pin SMD connector
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