JVC VN-V686WPU manual 117

Symptom	Causes and Countermeasures	Reference
		Page
Multicast images cannot be	● Start multicast transmission manually from the	A Page 70
played back	[Streaming] page of VN-V686WPU.	A Page 96
	● In the case of multicast reception at Built-in Viewer,	A Page 101
	check that the multicast address and port number
	of Built-in Viewer settings coincide with those on
	the [Streaming] page of VN-V686WPU.
	Make use of a network that supports IGMP v2 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.
The frame rate of the	● Check Built-in Viewer settings when a Built-in	A Page 96
displayed image is low	Viewer is in use.	A Page 101
	● Frame rate will be constrained when the network
	bandwidth is narrow.
A white zone appears in Built-	For some computers, a part of the Internet Explorer	^
in Viewer	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 size(96DPI)B to resume normal drawing.
A warning message appears	Built-in Viewer consists of a software component	^
upon starting up Built-in	called ActiveX.
Viewer	The ActiveX is usually installed when Built-in Viewer
	is used for the first time. However, installation may
	be rejected depending on the Anti-virus software
	settings. In this case, change the settings of the
	Anti-virus software before installing Built-in Viewer.

117