Data Sheet

Smart Machine Smart Decision
SIM800 Series_AT Command Manual_V1.09 190 2015-08-03
Response
+SJDR: (0,1)
OK
Test Command
AT+SJDR=?
Parameters
See Write Command
Response
+SJDR: <status>
or
+SJDR: <status>,<mode>,<var>,<display>,<result>
OK
Read Command
AT+SJDR?
Parameters
See Write Command
Response
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Unsolicited result codes supported:
+SJDR: NO JAMMING
or
+SJDR: JAMMING DETECTED
or
+SJDR: INTERFERENCE DETECTED
Write Command
AT+SJDR=<status>
[,<mode>][,<var>[,<
display>]]
Parameters
<status>
0 Disable jamming detection
1 Enable jamming detection
<mode>
0 Should inquire status by reading command
1 Only report jamming status via URC from serial port
2 Only report jamming status via the PIN
3 Report jamming status via URC as well as the PIN
<var> The threshold to separate “+SJDR: JAMMING
DETECTED” from “+SJDR: INTERFERENCE
DETECTED” (while the signal strength variance is
higher than <var>, there could be industrial interferences ,
and “+SJDR: INTERFERENCE DETECTED” is
reported).
1-255(default value:255)