Siemens M20 Terminal Technical Description page 160

Siemens Information and Communication Products
Ignition Box
+
1
IGN
4
6
GND GND
To M20T To M20T
When using M20T
Implement as shown
Power supply: 8-24V
8.2.3 Starting up and logging into the GSM net
1) Insert the SIM card into the M20T.
2) Connect the serial cable between the M20 Terminal and the PC.
3) Connect the antenna cable and antenna to the M20 Terminal connector.
4) Connect the handset to the M20 (optional)
5) Connect the M20 Terminal to the power supply and ignition circuit, connect power supply to
mains
6) Activate the M20 Terminal by pressing the ignition button on the ignition circuit.
for AT LEAST 1 SECOND (Ignition can be set high before, at the same time, or after power
supply of the M20T)
Blinking LED indicates: M20 ON, searching for Network / Waiting for PIN
Note: Some Power supplies provided with the M20T have the Ignition signal internally connec-
ted to HIGH. In this case no extra ignition line and circuit is necessary. In this case the green
LED on the M20T starts blinking when the power supply is connected.
Depending on the Terminal program used (Procomm Plus or Hyperterminal) please see the relevant chapter
Version 8 dated 15.03.00
WESTERN PLUGS
4 Pole
1 DC IN
GND
4
6 Pole
DC IN
1
4
IGN
6
GND
+
1
4 GND
From Power supply
When using M20
80 pole SMD Connector:
Power supply DC IN: 6V
Pins:
18-22, 58-62
DC_IN(6V):
8
IGNITION:
17, 23-25, 38, 43, 56,
GND
57, 63-65
Application notes
POWER
SUPPLY
To
M20T
LED
Off
Off
Off
Off
Off
Blink
A
160