User
Manual
GSM-4S
8
The following sequence must be strictly observed while putting the module into operation:
1. Make complete wiring.
2. Turn on power supply of the module without SIM card inserted into the socket on the
electronics board – “Set the PIN code" message will be displayed by the module.
3. Activate the service mode of the module and, where the module may have been
preprogrammed before, call the Erase settings service function (which will restore default
settings).
4. Enter the PIN code.
5. Switch off power supply.
6. Insert SIM card into the
module (see Fig. 4).
7. Turn on the power supply
again and program the
module as required.
Notes:
•
If the SIM card fails to
accept the PIN code,
a
"Bad PIN, go on?
ESC=Stop" message will
appear. The module will
wait 60 seconds for user
reaction, then it will repeat
the attempt to send the PIN
code. Sending a wrong PIN code three times will disable the SIM card. During the
countdown you can press the OK key to immediately resend the code to the card, or press
the ESC key to stop the countdown to make possible a change of the PIN code for the
right one.
•
The "GSM phone trbl." message is shown on the display until the SIM300CZ telephone
logs in the cellular network. This state may last up to several minutes from the module
power supply being turned on.
•
The main reasons why the telephone is unable to log in are:
−
missing SIM card, SIM card inactive or defective
−
insufficient range (antenna signal level = 0)
−
antenna not matched to the network range (900/1800/1900 MHz) or faulty
−
wrong PIN
−
SIM300CZ telephone trouble
The module power supply should have sufficient current capacity. The recommended power
supply (for example, the SATEL manufactured APS-15 or APS-30) should be equipped with
its own battery.
It is suggested that the power supply be located within 3 m from the module.
If the supply voltage is lower than 9.8 V, restart of the module will follow. Therefore, be sure
that the module supply voltage never drops during operation below 9.8 V at the maximum
current consumption.
Figure 4. Entering the SIM card into its socket
1. slide the card
carrier down
3. press the carrier to
the plate and slide
the carrier up to fix it
in place
2. turn the carrier
aside and slide
the card into the
guides
SIM card
