Siemens M1 - Manual (Page 9)

8
gsm-m1-e.fm GSM M1 Module, English: A24859-N4000-A100-1-7677
Installation / startup
26.2.96
Correct operation of the M1 in send mode cannot be guaranteed if input voltages fall
below 8 V.
When input voltages exceed 32 V, the supply voltage is disconnected in order to pro-
tect the electronic components from an overvoltage.
Input voltages >100 V destroy the module.
When installed, the M1 must be protected by a medium time-lag fuse with a nominal
value of 1A or a fast fuse with a nominal value of 1.6 A. For vehicle installation the M1
must be directly connected to the battery.
Important:
Do not connect the ground cable to the power supply, since this could result in a short
circuit via the
antenna cable.
In order to control the GSM Module M1 and transfer data via the serial interface (COM
port), the interface parameters must be set.
The parameters settings are as follows:
COM port: 1-4, depending on which one the M1 was connected to
Baud rate: 2400 - 19200 baud, autobauding
Data bits 8
Parity None corresponds to 8N1
Stop bits 1
Duplex Full
For instructions on how to set these parameters, see the user guide for the computer
or terminal program used.
Overvoltage / undervoltage
Protection / on-board network connection
Power consumption
Supply
voltage Channel
search Standby Send mode
Typical Max. Typical Max.
12 V 130 mA 70 mA 150 mA 220 mA 500 mA
24 V 70 mA 45 mA 150 mA 120 mA 500 mA
Setting / testing the COM interface
ဲ