RearviewSafety RVS-MDVR - Manual (Page 31)

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FAQ ABOUT 3G
(Basic SD card MDVR without 3G/WIFI modules ,Please notice the bellowing points: )
Q: What need I pay attention on using 3G wireless module to dial?
A: 1.Built-in wireless module is different between WCDMA and EVDO, also different devices
support different modules. Please make sure that your module matches with the USIM card
inserted. Never use EVDO USIM cards insert WCDMA device.
2.Check whether IP Server and control port set correctly, 3G signal is strong enough or not, then
check whether 3G dialed successfully or not .
3. If dialing fails, please check whether 3G antennas is connected well or not, as weak signals
also may cause unsuccessful dialing. Besides, check whether the USIM has enough flow or not ,
If there is not enough flow with the USIM card, Dialing also will fails .
Q: What need to do firstly when there is no video and can not dial about 3G ?
A: Press the INFO button to enter system information interface, check whether
USIM card exists or not, signal strength and dial-up status, whether the antenna contacts well or
not, also check whether the SIM card with flow or not. Using a new Sim card to check . All these
are basic judgments. If there are signals but dialing fails, so we need to check whether center
number and APN set correctly or not. Also check whether the device number has been occupied
or not.
FAQ ABOUT CMS
Q: Device turning on, there s no vehicles and video on the CMS Client platform?
A: Make sure the center server is working and on network. And then check whether the device
number has been occupied and has caused conflicts, then check whether center number and APN
set correctly or not. Check the device reports to CMS center via 3G module or WIFI, if it is 3G
module ,please check the module network type is correct or not , like WCDMA and EVDO need
appropriate USIM card to support. Also check if antenna is in good contact status. If the device is
still unable to report to the center after all above operation. Enter into system information interface,
check whether dialing is successful or not, if not, check whether the data access point and center
number set correctly or not. In case that the device still fails, please submit as much information
as possible to our technical for analysis, and please note the more data the more convenient.
Q: The Devices is in the network, but without any video images?
A: Please set a lower sub-stream flow for image transmission. When the frame rate of sub-stream
set too high, transmissions will be jammed or slowed by network upload restrictions. Also bad
network signal will affect the video transmissions seriously.
Q: After normal report to the CMS, the device loses video after a period of time?
A: Firstly, check the device information to see whether it is dialing or not , if it s always on status,
there may the Sim card is out of flow , then replace a new card to have a try .Secondly, Check
whether the Device number have been changed by the driver or not. For the modified devices
need to report and adding the devices information into CMS platform again
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SD Card Mobile DVR User Manual
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