MTD2000 AT Command Guide R12
Confidential
DAVISCOMMS (S) PTE LTD
3 /105
07A 31-Jul-09
CF Chan
1. Revised default data buffer to 300 reports.
08
01-Aug-09
CF Chan
1. Added $MS and $MC for mileage counter.
2. Added GPS antenna detection.
3. Added error code 2303 to indicate failure to send report via
SMS.
09
16-Sep-09
CF Chan
1. Increase APN length to 40 characters in $NG command.
2. Increase watchdog timeout to 65 seconds.
3. Revised SMS recipient in $EI to single SMS number.
4. Revised minimum report interval in $CR to 5 sec.
10
02-Oct-09
CF Chan
1. Added a System Overview section.
2. Added $SIM for dual SIM card.
3. Added GSM/GPRS commands pass through.
4. Removed the support of the following characters (text
message, report, etc) which are not in the default GSM
character set: [ \ ] ^ _ ` { | } ~
10A 10-Mar-10
CF Chan
1. Added $LB for low battery shutdown.
2. Revised interval of data log to 60 sec and above.
3. Revised the maximum length of AT command and event
to 120 characters.
11
17-May-10 CF Chan
1. Added $GF and $GS for geo fence.
2. Added $AI and $AO for analog input and output.
3. Added $FSD and $FSO for fail safe output.
4. Added $MD for motion sensor sensitivity.
5. Added $DI for driver ID.
6. Added $OS for over speed detection.
7. Added $KR for key on reset.
8. Added $GM for GSM modem.
9. Added $SU for over the air firmware upgrade.
10. Added $CV for voice call and silent call.
11. Added $CA for auto answer incoming call.
12. Added $CS for MIC gain and speaker volume.
13. Added $GC and $GA for dead reckoning calibration.
14. Added $BC for battery charging control.
15. Added hardware watchdog timer.
16. Added test mode for peripheral test.
17. Support 5000 reports for data logging.
18. Removed $LB for low battery shutdown.
19. Revised the maximum length of AT command and event
to 150 characters.
12
1-Jun-10
Kyle Hor
1. Updated system code 2105 to include possibility that no
battery is present.
2. Added precaution not to send $SR via SMS at less than
10sec interval.
3. Added $MZ for motion detect calibration and modified
calibration mode not to be unique to gyroscope only.
4. $MD accuracy range and default value changed.