JVC VR-609U manual Network specific information, IP address

Technical Information http://pro.jvc.com

13 Network specific information

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IP address

What is a private (local) IP address?

Private IP address is an IP address that can be used freely as a LAN network address without being connected to the Internet.

What is a global IP address?

Global IP address is an IP address that is assigned to a device connected to the Internet. This address is indispensable for carrying out transmissions via the Internet.

"192.168.0.2" is the IP address set in the initial settings for JVC IP products.

Example:

	Local IP address range			Global IP address range
		192.168.0.254
192.168.0.1
			Gateway	Gateway
192.168.0.2		Switch		Internet

192.168.0.3

192.168.0.4

Simultaneous access by multiple users

The frame rate (or bit rate), which refers to the number of images that can be transmitted by JVC IP products within a second, is decided according to the specifications of JVC IP products. Within the range of specification approximately 10 users can simultaneously access JVC IP products. However, when a large number of users simultaneously access JVC IP products, there may be a decline in the frame rate or image quality.

Unicast and Multicast

Unicast transmission

Since unicast involves one-to-one transmission between two terminals (e.g. between a camera and a monitoring PC), it is necessary for the bandwidths to be equivalent to the number of terminals when identical information is to be acquired by several terminals.

Switch

PC

Request for image

Image data transmission

Multicast transmission

Since multicast is used to transmit a single packet to multiple terminals, the data transmission volume decreases regardless of the number of terminals. Multicast requires a compatible network device.

*Remote surveillance via the Internet cannot be carried out with a multicast system.

*Multicast systems require an optimum network design.

Switch

PC

Image data transmission

File size

JPEG recorded file size calculation for 1 camera

JPEG data size per image (approximate data)

Resolution	Compression rate (kB)
	1	2	3	4	5	6	7
160 x 120	9	6	4	3	3	3	2
320 x 240	22	15	10	9	8	7	6
340 x 480	59	37	24	19	17	16	15
640 x 480 (fine mode)	65	41	27	21	19	18	17

Example:

Camera setting: Resolution 320 x 240, Compression rate 2, Frame rate 2 fps

Q:What is the file size for 1 day recording ?

A:15 (kB) x 2 (fps) x 86,400 (s) = 259,200 (kB) = 2.59 (GB)

Q:How many days is the recording possible with 40 GB HDD ?

A:40 (GB) ⎟ 2.59 (GB) = 15.444 = 15 (days)

Maximum recorded file size

The maximum recorded file size vary depending on the application and Windows file system.

Maximum recorded file size (JPEG)

Application software			Windows file system
Standard controller	VN-S400U	FAT32	NTFS
2 GB	No limitation	4 GB	2 TB

For long recording, it is recommended to use VN-S400U and NTFS file system. The VN-S400U possesses a function that allows them to automatically separate recording files every hour on the software side. For example, if you record for three days straight, 72 recording files will automatically be created. (24 hours/day x 3 days = 72 hours)

JPEG network traffic

Data size per image x Frame rate x 8 (bit/byte) x 1.2 (overhead)

=JPEG network traffic Example:

Q: What is the network traffic if the camera setting is resolution 320 x 240, compression rate 2 and frame rate 5 fps ?

A: 15 (kB) x 5 (fps) x 8 (bit/byte) x 1.2 = 720 (kbps)

RJ-45 connector assign

Pin No.	T568A type	T568B type	Signal
1	Green / White	White /Orange	TD+
2	Green	Orange	TD–
3	Orange / White	White /Green	RD+
4	Blue	Blue	——
5	Blue / White	White /Blue	——
6	Orange	Green	RD–
7	Brown / White	White /Brown	——
8	Brown	Brown	——
Dual Stream (MPEG-4 & JPEG)			Dual
			Stream

Chart
Color Camera
Storage
& Monitor	Flat Panel Display
Products	IP Security
Information	System
	Technical

PoE (Power over Ethernet) PoE

PoE supplies the electric power to the network camera by using LAN cable (Cat 5). Easy installation like JVC analog cameras is available with single cable. It doesn't require data cable and AC power cable separately.

PoE compliant network switch or power injector is required for PoE installation.

LAN cable (Cat 5)

PoE switch

*IEEE 802.3af compliant switch PC

Alarms

JVC IP products has two inputs and two outputs alarm terminals (except VN-E4U: input x 4 /output x 1). Either a less voltage a-contact or c-contact output-type alarm input sensor should be employed. Since alarm output is NPN open collector output, NPN open collector output must be converted to less-voltage a-contact output when using a general sequencer. In addition, it is important to note that the GND must be connected to a control device. In the event that the control device has no GND, the JVC IP products GND should be connected to the COM terminal. When distributing an alarm to several multi-viewers (VN-S400U) with a single camera, it is possible to register up to 5 distribution addresses for up to 10 for JVC's JVC IP products (except VN-C20U).

As example, simultaneously able to use both monitoring by smooth MPEG-4 picture and recording by high quality JPEG.

					PC
Camera MPEG-4			QVGA
			320 x 240 Max.15 fps
						Monitoring by MPEG-4
						Recording by JPEG
	JPEG	Network	640 x 480 Max.5 fps
				Recorder

Technical information for software developers

The following technical information are available for integrating JVC IP products cameras into customers own application software or system.

API: UDP, HTTP data and other communication specifications that include the structure of control data, structure of JPEG data and some examples of sequence until JPEG data is acquired.

In order to receive these JVC confidential technical information, please contact local JVC sales office and enter into the license and non-disclosure agreements. These information are supplied on royalty free basis.

Local JVC sales office : http://www.jvc-victor.co.jp/english/company/contacts/hqpage_a2.htm

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JVC Video Surveillance Products 2006-2007 41