GSM Module
values
OK
2.9.4
+ZCSQ: set auto display CSQ
Description
This command can be used to set a threshold value <NUM>. As the RSSI is
larger than the threshold value, the module will send +CSQ at the COM
port.
Note:
Note: the threshold value <NUM> does not refer to the RSSI. The threshold
value is identical to the <rssi> displayed by the command AT+CSQ. Besides,
the command would effect RI status. Please pay attention and avoid
mixing with incoming call indication.
Format
AT+ZCSQ
＝
<NUM>
AT+ZCSQ=5
+CSQ
：
24,0
OK
AT+ZCSQ? 5
OK
Example
AT+ZCSQ=? +ZCSQ:
(0-32)
OK
Parameter <NUM> range: 0
～
32
Remarks
As the RSSI is larger than the threshold value <NUM>, the module would pull
RI pin (ME3000 Pin15) down 50ms and display the current RSSI value in the
format of “+CSQ: <rssi>,<ber>” while restoring RI pin’s high level.
If the threshold value <NUM> is equal to 0, stop reporting the signal quality.
If the threshold value <NUM> default value is 0, the module will auto restore
to the default settings after restart.
When checking RSSI, if return “+CSQ:99,99”; 99 doesn’t represent the actual
<rssi> value, but the valid <rssi> value which is not yet obtained.
2.9.5
+ZEDT: set DTR inspection mode
Description
This command is used to set the inspection mode for DTR pin.
There are two inspection modes: A
）
the module reads DTR pin’s level; as DTR
pin is at low level, the module think DTR signal is valid, namely the module is
effectively connected with DTE device; otherwise, the module is
disconnected with DTE device; B
）
the module doesn’t read DTR pin’s level;
and the DTR signal would be always valid, namely the module will be
always connected with DTE device effectively.
Format
AT+ZEDT
＝
<NUM>
Example
AT+ZEDT=1 OK
50
