l OB9934DT/OB9934DR can transmit one chanel of simplex video, one to two channel of simplex audio and one to four channel of duplex control data signal over 10M/100M Ethernet
l Support OB standard network management system
l Support MPEG-1、MPEG-2 ML@MP
l Adjustable system bit stream 1.5~8Mbps
l Code-speed adaptive decoder
l Low end-to-end delay（≤150 ms）
l Embedded Linux operation system
l Support unicast, broadcast and multicast
l Support ARP, TCP/IP, UDP, ICMP, IGMP, DHCP, SNMP, TELNET, FTP and HTTP
l Four RS232/485 serial channel at most
l One 10/100M adaptive network interface
l No distance restriction，only Ethernet is needed
l Surface mount technology (SMT)
l Rack-mount/stand-alone/19"1U enclosure
l Power, link, data status indicator
l Expressway monitoring /communication system
l City intelligent traffic monitoring/communication system
l Electric power security monitoring system
l Water conservancy security monitoring system
l Security monitoring system in large-scale enterprises
l Military communication
Video
Code format：MPEG-2
Compatible format：PAL 25fps, NTSC 30fps
Resolution：D1, Half D1, CIF
Connector：BNC（75Ω）
Voltage：1Vp-p
Audio
Code format：MPEG-1 Laryer2
Sampling rate：32 / 44.1 / 48 KHz
Connector：BNC（unbalanced, 30kΩ）
Voltage：2Vp-p
Low-speed data
Data format：RS-232/485
Bit rate：DC – 115.2Kbps
Connector：DB9 or RJ45
Electric Features
Power supply：
OB9934D T/R（XX）-A
Input: +5.5v-6VDC
Sources: plug-in frame backplane, 96-Pin interface
OB9934D T/R（XX）-B
Input: +5.5v-6VDC
Sources: Power adapter, 5-pin self-lock interface
OB9934D T/R（XX）-C
Input: +5.5v-6VDC
Sources: mains supply
Power consumption：6W
Mechanism Features
OB9934DT/R（XX）-A
Rack-mount，OB18 box
Dimension：442X222X178 Weight：3.5Kg
Material：section aluminum Color：silver gray
OB9934DT/R（XX）-B
Stand-alone，OB2A box
Dimension：160X202 X45 Weight：1Kg
Material：section aluminum Color：silver gray
OB9934DT/R（XX）-C
Standard，OB19A/B box
Dimension：482X250 X45,482X250X88 Weight：2Kg
Material：section aluminum
Color：silver gray
Ethernet
Standard：IEEE 802.3/802.3u
Bit rate：10M/100M adaptive
Protocol：ARP, TCP/IP, UDP, ICMP, IGMP，DHCP,
SNMP, TELNET, FTP and HTTP
Connector：RJ45
System parameter
MTBF（Mean Time Between Failures）：>100 thousand hours
Environment
Operating temperature：－40℃～74℃
Storage temperature：－55℃～85℃
Humidity ：0~95% non-condensing
Electromagnetism compatibility
Accord with GJB151A-97、SC
Operating state indication
OB9934DT/DR
LINK ：network connection indication
TX：data transmit indication
100M：10M/100M indication
INIT：initialization indication
POWER：power indication
Network management system function
OB9934DT：
Encoder state detection；video/audio/data
In-out state detection
OB9934DR：
Decoder state detection；video/audio/data
In-out state detection
Audio channel/data channel configuration
In production model“（XX）” refers to the configuration of audio and data channel.
e.g.“（2A2D）” refers to configuring two line of audio channel and two line of low-speed data channel.
OB9934DT(XX)：encoder，reside in front.
OB9934DR(XX)：decoder，reside in center.
XX：represents audio channel and low-speed data channel configuration
e.g.： 1 channel digital video＋2 channel audio＋2 channel control data OB9934D(2A2D)
1 channel digital video＋1 channel control data OB9934D(1D)
