JLCooper eBOX Quad Serial to Ethernet Interface
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EBOX - Overview
JLCooper Electronics
JLCooper eBOX is a 10/100BASE-T (Ethernet) to Quad RS-232/422 (9-Pin) and GPI hard- ware interface. It acts as a portal for controlling devices across your facility or across the world. It eliminates information bottlenecks and overcomes distance limitations typically inherent to serial communication. It simplifies long distance cabling by using IP addressable, point-to-point architecture to send control messages over existing 10/100 BASE-T wiring.
eBOX features four serial connectors, activity LED's, 24 GPI Inputs and 24 GPI Outputs as a standard feature (General Purpose Interface - facilitates switch closure control). It's ideal for LAN, WAN and Internet con- trol of VTRs, DDRs, switchers, computer based editing systems, cameras, projectors and other devices that use RS-232/422 (9- Pin) and GPI. Commands from a host NLE, Browser or RS-422 switcher/controller are directed to individual devices on the network. This allows broadcast or networked facili ties to control distanced machine rooms from a facility's central server.
eBOX is ideal for broadcast television, streaming media networks, multi-room editing facilities, news production or in any audio/video/multimedia studio where remote hosts need to control devices over long distances or via the Web. Host to eBOX, eBOX to host and eBOX to eBOX communication is pos- sible. An unlimited number of units can be addressed.
JLCooper's SDK provides comprehensive tools for software developers to link Visual Basic, C++, HTML or embedded devices for direct control of any device connected to any eBOX. eBox converts 4 serial ports and 24 GPI (General Purpose Interface) inputs and 24 GPI outputs to 100/10baseT Ethernet. The serial ports can be configured in the field to appear as EIA/TIA RS- 232E and CCITT V.28 or as EIA/TIA RS-422A, RS-423 and Federal Stan- dards 1020 & 1030 ports. Addition- ally, the port direction can indepen- dantly be configured as DTE or DCE.
eBox communicates over standard TCP/IP which allows it to be used with any host com- puter. With TCP/IP, traffic can be routed over internal LANs, wireless LANs, MANs, WANs and even over the Internet. Configurataion is accomplished through a web page server built into the eBox. Items such as port speed, parity, IP address, remote IP address and TCP port are set using a standard web browser. Settings are stored in nonvolatile memory.
Typically, the eBox functions as a server, pas- sively waiting for client devices to connect to it. The device can be a computer or another eBox configured as a client. When the eBox is configured as a client, it will actively attempt to connect to the server eBox. Once accomplished, eBox will then pass data received in the serial or GPI ports to the remote eBox. If there is no data received, eBox will not send any TCP packets.
Ethernet
This eBox port is just like an Ethernet port on a computer, and can be connected to a hub, switch or router. eBox supports IEEE 802.3u clause 28 Auto- Negotiation which automatically senses the Ethernet port speed & duplex operation and chooses the highest performance settings. Front panel LEDs indicate various operating conditions of the Ethernet connection.
Serial
The four serial ports along the top of the rear panel are 9 pin D-Sub connectors which can be configured for RS-232C or RS-422A operation. In RS-422 mode, eBox direction can be config- ured to appear as a Controller or a Device. In RS-232 mode, the eBox appears as a DCE or DTE.