107
Symptom Causes and Countermeasures
Reference
Page
Multicast images cannot be
played back
● Start multicast transmission manually from the
[Streaming] page of VN-X35U.
● In the case of multicast reception at Built-in
Viewer, check that the multicast address and
port number of Built-in Viewer settings coincide
with those on the [Streaming] page of VN-X35U.
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 68
A Page 98
A Page 86
The frame rate of the
displayed image is low
● Check 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 90
A Page 99
A white zone appears in Built-
in Viewer
● 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.
—
Unable to receive alarm
notification using the
computer via TCP/UDP
● 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.
—
Images are not distributed to
the network
● Check whether the switch at the side of
VN-X35U is set to or . If either of the above is
selected, change the switch setting to . After
changing the switch settings, press the [RESET]
button to reboot.
A Page 11
