Doc. Title
ST3940 User Manual
Concerning:
Rev.
Date (dd-mm-yy)
Page of Pages
Features and how to configure ST3940
1.06
0
18-6-19
39 of 54
<Note>
In a case that you do not want the target device to be turned off with its power button,
you can turn off the power by sending this command to the target device.
10-11. Command on how to set the time period that GPS is stabilized.
This command is made if the device user does not want to utilize functions of motion sensing of
the device, which means that the case that the value of <VI_ON_THRES> is zero (0). In such a
case that the user wants to adjust the time period which is taken for the GPS module to find the
satellites.
Field
Marks
Value
Meaning
COMMAND
“SetGpsOnPercent” ‘10’ ~
‘80’
Users should set the value to a level ranged from 10% to
80%.
<Example>
[command]
ST600CMD;0123456789;02;SetGpsOnPercent=33
[response]
ST600CMD;Res;0123456789;309;SetGpsOnPercent
<Note>:
1.
There might be a case that a device user does not want to utilize functions of motion sensing of the device,
which means that a case that the value of <VI_ON_THRES> is zero (0). In such a case, the user can adjust
the time period of <GPS Module On> in order to enable the device to catch GPS signal of satellites to better
facilitate the time period of <GPS Fix>. In such a case, the user can set a Value of time period of <GPS
Module On> ranging from 10% up to 80% of the interval of Parking Mode. If this Value is set higher, life time
of the battery gets shorter. Before you make a decision, therefore, you need to think about how high/low this
Value should be. You need to be selective in setting this Value in consideration of how you practically use the
device.
2.
The default is 33%. The GPS module of the device is On for 60 seconds, which is 33% of the Default Parking
Interval (i.e. 180 seconds). Maximum time period of <GPS On> is between minimum 1 minute and maximum
10 minutes.
3.
Sometime, you may need to change the existing Parking Interval. In such a case, the saved value of the <GPS
