ALOHA Cabled Observatory
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ALOHA Cabled Observatory
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User Ports
Three of eight user ports on the Observatory. The board at the top of the photo with the gray jacks is the Ethernet board. The gray cable on the Ethernet board is connected to a local network and can be accessed by any authorized computer on the network. An RS422 board is located in the middle. The cable black wire bundle is connected to a SEM (Small Experiment Module) which is gathering data from a GMSP (Geo Magnetic Seismic Package) located in the lab. An RS232 board at the bottom is presently not connected to any device, but its output was tested for functionality.. RS232:The RS232 interface module provides isolated RS232 connectivity to users experiments. The dual RJ11 connectors at the right go to two different Digi® TS 8 port servers to provide the experiment with fault tolerance.
RS232 board with two RJ11 ports for redundancy. The observatory operator can switch user between jacks should any connection fail. RS422:The RS422 interface module provides isolated RS422 to RS232 connectivity to user experiments. The users RS422 signal is converted to RS232 and coupled to two RJ11 jacks. As mentioned above the two jacks go to two different Digi® TS 8 port servers for fault tolerance.
RS422 board with two RJ11 ports for redundancy. The observatory operator can switch user between jacks should any connection fail. Ethernet:The Ethernet interface couples a user to his experiment which is assigned an IP address. The two RJ45 jacks go to two different D-Link® DSS 8+ 10/100BaseT Ethernet switches for fault tolerance.
Ethernet board with two RJ45 ports for redundancy. The observatory operator can switch user between jacks should any connection fail. Power:Please click on the links below to learn more about power available power options.
Low Voltage Circuit Breaker
Timing:
Page Last Modified 08/10/2007 |
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