ST3500 User Manual
15
CON_TYPE
1.
KEEP_CON : The device keeps TCP connection always and can receives a command by WCDMA.
2.
KEEP_DISCON : The device connects TCP connection when the data is sent. After sending, the
device disconnects WCDMA and TCP connection if it estimates there is no data for sending within
3minutes. In this case, it cannot receive a command by WCDMA.
3.
KEEP_NOP : The device doesn’t send any report after be installed. When the device enters
emergency mode or receive ‘Start Report’ command by SMS or RS232, it starts report depending
on report parameters. It may be used for saving WCDMA fee. Current version cannot support this
option.
Group Send
The device stores data if the vehicle is in no WCDMA area. And, the vehicle moves to WCDMA available
area, device starts sending stored data.
If group send option is enabled, the device makes 5 reports to one bundle and send these 5 reports at one
time.
Group send is useful to speed up sending.
M_Sensor
1.
Collision: The device sending a event when ignition is ON and have a motion.
2.
Shock: The device sending a event when ignition is OFF and have a motion.
Jamming detection procedure
JAM_CHK_DIST & JAM_CHK_TM are assist for jamming detection to avoid false detection.
At least, we recommend use JAM_CHK_DIST for safety.
If you use two assist functions, it can detect two case of jamming as follows.
*Case of jamming WCDMA only.
Jamming detected -> JAM_CHK_DIST -> JAM_CHK_TM -> Triggered by JAM_DET mode.
*Case of jamming WCDMA & GPS.
Jamming detected -> JAM_CHK_TM -> Triggered by JAM_DET mode.
JAM_CHK_DIST : if 0, skip this function.
JAM_CHK_TM : if 0, skip this function.
If disable all of assist functions, just triggered by HAM_DET mode after detected jamming.
In this case, it’s possible to false detection in weak WCDMA or strong radio area.
4-6. Additional Parameters
