N.Karthick
Junior Member level 2
- Joined
- Sep 19, 2014
- Messages
- 24
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- Location
- Tirupur, India
- Activity points
- 166
Hi friends,
Recently i'm getting error msd form sim900a.
error is cpin;
AT com+Response of my modem.
AT
OK
AT+CSQ
+CSQ: 27,0
AT+COPS?
+COPS: 0
OK
AT+COPS=?
+COPS: (1,"AirTel","AirTel","40494"),(1,"Vodafone IN","Vodafone","40443"),(1,"AI
RCEL","AIRCEL","40442"),,(0,1,4),(0,1,2)
OK
AT+CPIN?
ERROR
AT+CFUN?
ERROR
AT+CGREG?
+CGREG: 0,0
can't connect with network.
help me:|!
- - - Updated - - -
the voltage from sim_vdd pin30 is always low only 3.0mV is shown. what can i do?
- - - Updated - - -
now i got the output, i found my mistake when i check the sim holders continuity in diode mode.
i palce my RED probe on 5pin then check one by one all the pins shows .665v(ie.0.0<1000mV). my 7 pin shows no connection after replace i got output.
Form this probs i got lot of knowledge on sim900a.
Recently i'm getting error msd form sim900a.
error is cpin;
AT com+Response of my modem.
AT
OK
AT+CSQ
+CSQ: 27,0
AT+COPS?
+COPS: 0
OK
AT+COPS=?
+COPS: (1,"AirTel","AirTel","40494"),(1,"Vodafone IN","Vodafone","40443"),(1,"AI
RCEL","AIRCEL","40442"),,(0,1,4),(0,1,2)
OK
AT+CPIN?
ERROR
AT+CFUN?
ERROR
AT+CGREG?
+CGREG: 0,0
can't connect with network.
help me:|!
- - - Updated - - -
the voltage from sim_vdd pin30 is always low only 3.0mV is shown. what can i do?
- - - Updated - - -
now i got the output, i found my mistake when i check the sim holders continuity in diode mode.
i palce my RED probe on 5pin then check one by one all the pins shows .665v(ie.0.0<1000mV). my 7 pin shows no connection after replace i got output.
Form this probs i got lot of knowledge on sim900a.