JVC V25U Instruction Manual - Page 88

Troubleshooting continued, Others

Page 88 highlights

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

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88
Others
Troubleshooting (continued)
Symptom
Causes and Countermeasures
Reference
Page
Multicast images cannot be
played back
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
The frame rate of the
displayed image is low
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
A white zone appears in the
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
A
Large size
B
or
A
Custom size
B
, select
A
Normal size
B
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 [MONITOR OUT] switch at
the side of VN-V25U is set to
A
NTSC
B
or
A
PAL
B
.
If either of the above is selected, change the
[MONITOR OUT] switch setting to
A
OFF
B
. After
changing the switch settings, press the [RESET]
button to reboot.
A
Page 10