User's Manual

GVR3550 USER MANUAL
Grandstream Networks, Inc. GVR3550 User Manual Page 73 of 76
Firmware Version 1.0.0.0 Last Updated: 10/2013
Incorrect PTZ settings
Unmatched PTZ decoder with the GVR3550 protocol
Unmatched PTZ decoder with the GVR3550 address
When it refers to multiple decoders, the far end of AB line of PTZ decoder should be added
120Ω to eliminate the reflection and impedance matching, otherwise it will cause unstable
PTZ control.
9. Unable to login WEB
Unable to install client or it can’t be displayed properly.
The operation system is win98 or win me: I t is recommended to update the operating
system to win2000sp4 and above.
Network connection error
Network settings
Incorrect username and password.
10. Mosaic or no images when preview image or playback video
Poor internet connection
Resource limitations on the client side
The login user has no monitoring privilege.
11. Unstable internet connection
Unstable network
IP address confliction
MAC address confliction
Unstable connection of network card on PC or on the GVR3550
12. USB backup error
Too much resource utilization of CPU, please stop recording then back up.
Data volume exceeds backup capacity would cause backup error
Incompatible backup devices
Damaged backup devices
13. Unable to shutdown alarm signal
Incorrect alarm settings
Manually enabled alarm output
Input device failure or wrong connection
Individual version problems that can be solved via upgrade.
14. The alarm doesn't work
Incorrect alarm settings
Incorrect connection of the alarm cables