CalAmp SMC-GPRS Series, Руководство пользователя

Страница: 15 / 84

001-0004-829 Rev00
Page 15 of 84
Verify SMC Modem Connectivity
Power on the SMC test board (+12VDC typical) and observe the HyperTerminal window for
^SYSSTART , indicating the SMC modem successfully powered on.
Figure 5.2 HyperTerminal screen responses
The
ATI command prints the cell module product information. If you get an Error or no
communication, verify the modem is connected to the proper COM port and powered on. Refer to
Figure 5.2 for all the AT commands listed below.
Confirm your SIM card is properly installed with the
AT^SCID command. A reply of ^SCID:<20
digit CID number> indicates the modem recognizes the SIM card and displays it’s ID number.
Confirm the phone number currently in the modem with the
AT+CNUM command. It should be 11
digits i.e. 18052162288. For some carriers the phone number may not display but will respond with
“OK”. If the SIM card is not in the unit or not activated properly, the modem will reply with “ERROR”.
Verify the modems International Mobile Equipment Identity (IMEI) number with the
AT+CGSN
command. The IMEI is used to identify GSM mobile equipment to the GSM network.