JVC manual Other Settings Using the VN-C625U Setup Tool 2. Multicast

Settings (Step 2 Network Settings)

2-4 Other Settings Using the "VN-C625U Setup Tool" (2. Multicast)

Selecting Multicast mode allows VN-C625 to send the same image data to multiple PCs on the network at one time without lowering the frame rate.

1.Start up the "VN-C625U Setup Tool" and select [Multicast]. The [Multicast Setting] screen will be displayed.

1 Select [Multicast Mode].

2 Select the mode for acquiring images.

Normal : Set to Normal when using a narrow bandwidth network.

High Speed : A maximum transmission rate of 30 fps is possible for 640 x 480 images.

Notes

• Images are divided into IP fragments when set to High Speed.

• Do not set to High Speed for narrow bandwidth networks.

• Maximum data transmission capacity is 8Mbps.Even when High Speed is selected, a maximum rate of 30 fps may not be possible for 640 x 480 images depending on the image size.

• The MTU(Maximum Transmission Unit) sizes during image acquisition are as follows.

Transmission Mode	MTU Size (Bytes)
Normal	1430 Bytes
High Speed	1500 Bytes

Multicast

•Set the multicast address within the range between 225.0.0.0 to 239.255.255.255. Do not set the same multicast address for different devices on the same system.

•To view VN-C625 images in the multicast mode through a router, either the following operating environment or router setting will be required.

1The router supports IGMP Ver2 and is synchronized with the starting and stopping of the multicast transmission, and the router settings can be dynamically changed.

2If the router does not support IGMP Ver2, a static route for multicast must be set to the router.

•When there are multiple cameras on the same subnet that are set to the multicast mode, set up a network using a hub that supports the IGMP snooping feature.

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