Question: Why does it fail to preview the picture?
Answer: Possible causes:
a. CCD camera is not power on or there is something wrong with video wire (or not well connected, loosened or broken),
b. Setting error of IP address and related channel number, or wrong protocol selection (at present do not support MCAST), please check "local setting",
c. video server is shutdown or starting up, please use PING command of the operation system to check,
A Chinese terminal can be connected to Console port of the equipment. After diagnosis mode of the system set, you can see various promoting message of system running.