Q: 3G signal is intermittent, video is jammed?
A: At present the signal coverage of WCDMA and EVDO is rather wide, however, there are some mountainous
districts without signal coverage, and some suburban areas have weak signal due to the local network
constraints, then it will be jammed during watching of video, or video cannot be watched at all, the greatest impact
of this situation is from the local network; Moreover check whether the frame rate setting of sub-stream is too
high, because the video may also occur such situation when the network is poor and frame rate setting is high.
Q: WIFI signals can not be connected when above-60db?
A: If your WIFI settings are correct, generally there is no problem for connection when signals are above
-60db. If the host can not be found in a local area network (LAN), it will need to look up your SSID and
password to see whether they are already set, of course, basic IP address also must be set ready, moreover
check whether the type of encryption and authentication mode is set according to the requirements.
GPS-related issues
Q: GPS module exists but no coordinate information?
A: 1.Check whether GPS module exists, if it does not exist, check whether the hardware is installed or in
a good contact.
2.Make sure that the GPS antenna contacts are good, whether the antenna is broken, it is recommended
to be located in places with strong signal, note that some car glass shielding film will block GPS signals;
3 If the test is in the room, the signal of GPS antenna in the room will be obscured, it is recommended that
the GPS antenna is placed outdoor.
Q: Deviation of GPS location on map?
A: It means the signal is valid if the GPS module already positioned, there may many reasons for the deviation,
such as government restrictions, permissible error, GPS signal interruption, etc; the actual satellite map
may have deviation for security reasons, general map can solve the problem by using GPS correction.
3G wireless module
Q: If use the 3G wireless module for dial-up, what do I need to pay attention to?
A: 1. Choose the built-in wireless module WCDMA or EVDO, corresponding module settings are not the
same, the modules supported by different machines models are not the same, so please make sure whether
your module and SIM is in correspondence. Do not use telecom SIM card on WCDMA machine;
2.Check whether the settings of Server IP and port are correct, whether 3G signal is strong enough for
dialing, and then check whether the 3G dial-up is successful or not.
3. When dialing is unsuccessful, please check 3G antenna is in good contact or not, the dial up may fail
because of weak signal, moreover, please check whether the SIM card has enough traffic, if no traffic,
dial-up will be unsuccessful.
Q: When 3G has neither report nor video , what should be done first?
A: Press INFO key to enter the system information page, check whether the SIM card exists and view the
signal strength as well as dial-up status, whether the antenna is in good contact, and then check the SIM
to see whether it is out of traffic, the most basic judgment is to replace the SIM card. If the dial up failed with
signal, then check whether the settings of center number and the port are correct. Moreover check whether
the device number of the product is already occupied.
gServer related issues
Q: Why the vehicle and video cannot be seen in gServer client when the device has been started?
A: At first make sure the central registration server is switched on and on the net, then check whether the host
device number has been occupied to cause conflict, secondly check whether the settings of server-centric IP
and port are correct; devices report to the center via the built-in 3G module or via WIFI. If via built-in 3G,
please check whether selected the correct type of built-in 3G module, for example, WCDMA and EVDO module
needs the support from corresponding SIM card, check whether the antenna is in good contact; If it still can not
report when above all are checked, enter into the system information page to view dial-up. If dial-up is not
successful, look up whether the setting of data access point and center number is correct. If all ultimately fail,
please collect as much information as possible to submit to the technical supporting staff for analysis, the more
data provided, the more convenient for technicians to solve the problem.
Q: The device is online, but why can I not see the video image?
A: Please set lower sub-stream to transmit image, the blocked or slow transmission speed situation may
occur when the sub-stream frame rate is set very high and be affected by network uploading limit; poor
network signal or intermittent will seriously affect the video transmission.
Q: The device is properly reported on gServer, but the videos cannot be seen after using for some time?
A: Firstly check whether the host side displays dialing, if it keeps the dialing status, it may be because the
flow of the SIM card has run out, replace the SIM card to test; Secondly query whether the host device
number has been modified by the driver, the host with modified device number needs to be resubmitted to
add vehicle information; thirdly, if it still does not work by changing the card, it will need to check whether the
host's 3G module fails.
