GSM LT-1
SATEL
5
– SIM card busy
– invalid SIM card
– PIN2 code required
– PUK2 code required
– other errors
SIG
– indicates level of antenna signal received by GSM telephone (the LED goes out
when the module indicates a trouble on the FLT output):
– no cellular network signal
– signal power 1
– signal power 2
– signal power 3
– signal power 4 (maximum signal)
TX, RX
– data transmission indicators on RS-232 interface.
The cellular telephone is fitted with a special cable, terminated with connector for external
antenna (see: Fig. 2).
4. O
PERATING THE
GSM
TELEPHONE
As any other cellular telephone, the industrial cellular telephone requires a
SIM activation
card
to operate. The user of the GSM LT-1 module has to obtain such a card on his own.
The SIM card should be inserted into a special recess provided on the right-hand side of the
printed circuit board. The PIN code, if necessary, is to be entered into the module memory by
means of a telephone connected to terminals R-1 and T-1, or by means of a computer and
the DLOAD10 program.
Note:
The change of PIN code stored in the SIM card, or entering the PUK code is possible
after putting the SIM card into an ordinary cellular telephone.
5. I
NSTALLATION
It should be borne in mind during installation that the GSM LT-1 module must not be located
in the vicinity of electrical installations, since this may involve a risk of malfunctioning. Pay
special attention to how the cable is laid between the module and the telephone terminals of
the alarm control panel.
Never turn on power supply of the module and GSM telephone without external
antenna connected.
The installation must be carried out in a strict compliance with the following activation
procedure:
1. Make a complete wiring.
2. Turn on the module power supply without SIM card inserted.
3. Using a DTMF telephone set or the DLOAD10 computer program, specify the module
working parameters (including the PIN code).
4. Turn off power supply.
5. Insert SIM card into the socket (see: Fig. 3).
6. Turn on power supply.
A non-configured GSM LT-1 module will wait 10 minutes after power-up for entering the PIN
code of the SIM card. If this does not happen, the device will automatically deenergize the
telephone line and generate the trouble signal (i.e. it will short the FLT output to common
ground), thus making further programming from the telephone impossible (programming from
