JVC V25U Instruction Manual - Page 88
Troubleshooting continued, Others
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Others Troubleshooting (continued) Symptom Multicast images cannot be played back The frame rate of the displayed image is low A white zone appears in the built-in viewer Unable to receive alarm notification using the computer via TCP/UDP Images are not distributed to the network Causes and Countermeasures Reference Page ● Start multicast transmission manually from the [Streaming] page of VN-V25U. ● In the case of multicast reception at the built-in viewer, check that the multicast address and port number of the built-in viewer settings coincide with those on the [Streaming] page of VN-V25U. Make use of a network that supports IGMPv2 for multicast transmission. ● Multicast may be blocked by the WindowsXP firewall. When this occurs, perform the following to allow it to pass through. Double-click [Windows Firewall] under [Start][Control Panel], click the [Add Port...] button under the Exception tab, and register the port number to be allowed through the firewall in the Port Number field. Enter an arbitrary character string in the name field. A Page 58 A Page 78 A Page 83 ● Check the built-in viewer settings when a built-in viewer is in use. ● Frame rate will be constrained when the network bandwidth is narrow. A Page 78 A Page 83 ● For some computers, a part of the Internet - Explorer graphics may not appear and is left white when the following setting is performed on the Internet Explorer. If [Right-click on the Desktop screen]- [Properties]-[Settings]-[Advanced]- [Advanced]-[DPI setting] is set to ALarge sizeB or ACustom sizeB, select ANormal sizeB to resume normal drawing. ● Data may be blocked by the WindowsXP firewall. - When this occurs, perform the following to allow it to pass through. Double-click [Windows Firewall] under [Start]- [Control Panel], click the [Add Port...] button under the Exception tab, and register the port number to be allowed through the firewall in the Port Number field. Enter an arbitrary character string in the name field. ● Check whether the [MONITOR OUT] switch at the side of VN-V25U is set to ANTSCB or APALB. If either of the above is selected, change the [MONITOR OUT] switch setting to AOFFB. After changing the switch settings, press the [RESET] button to reboot. A Page 10 88