Manual

Network Video Recorder User Manual
182
The device supports G722.1 and G711 standards, and if the encoding parameter of the input
audio is not one of the previous two standards, you can log in the IP camera to configure it to
the supported standard.
Step 35 Check if the fault is solved by the above steps.
If it is solved, finish the process.
If not, please contact the engineer from our company to do the further process.
 The image gets stuck when device is playing back by single or multi-channel.
Possible Reasons:
− Poor network between device and IP camera, and there exists packet loss
during the transmission.
− The frame rate is not the real-time frame rate.
− The device supports up to 16-channel synchronize playback at the
resolution of 4CIF, if you want a 16-channel synchronize playback at the
resolution of 720p, the frame extracting may occur, which leads to a slight
stuck.
Step 36 Verify the network between device and IP camera is connected.
1) When image is stuck, connect the RS-232 ports on PC and the rear panel of device with
the RS-232 cable.
2) Open the Super Terminal, and execute the command of “ping 192.168.0.0 –l 1472 –f”
(the IP address may change according to the real condition), and check if there exists
packet loss.
Simultaneously press the Ctrl and C to exit the ping command.
Step 37 Verify the frame rate is real-time frame rate.
Select “Menu > Record > Parameters > Record”, and set the Frame Rate to “Full Frame”.
Step 38 Verify the hardware can afford the playback.
Reduce the channel number of playback.
Go to Menu>Camera>Encoding Parameters, and set the resolution and bitrate to a lower
level.
Step 39 Reduce the number of local playback channel.
Go to Menu>Playback, and uncheck the checkbox of unnecessary channels.
Step 40 Check if the fault is solved by the above steps.
If it is solved, finish the process.