SATEL GPRS-T4
3
Fig. 2. View of module electronics board.
Explanations for Figure 2:
1 -
SIM card socket.
It is not recommended to insert the SIM card into its socket before
programming the card PIN code in the module (if the card requires entering the PIN
code). If the event codes are to be sent with the use of GPRS technology, the GPRS
service must be activated for the SIM card installed in the module.
2 -
LEDs
indicating the module status (see: Fig. 3).
– LED A is blinking when GPRS transmission is going on,
– LED B is blinking when SMS message is being sent or the module is calling (CLIP
test transmission),
– the other LEDs indicate the level of signal received by the GSM telephone (steady
light) and the troubles (blinking).
3 -
RS-232 port (TTL standard)
.
4 -
antenna
socket
.
5 -
GSM industrial
telephone
.
Fig. 3. Examples of LED indicated statuses.
A
(LED A is blinking, the other LEDs are lit up) – GPRS transmission is going on; signal level:
3.
B
(LED B is blinking, the other LEDs are lit up) – SMS message is being sent or module is
calling (CLIP test transmission); signal level: 4.
C
(LEDs are blinking) – logging into GSM network.