User Manual

Table Of Contents
120 40520-100a ViPR User Manual
x
RS-232 Industry–standard interface for data transfer.
RTU Remote Terminal Unit. A user-provided SCADA device used to gather informa-
tion or control other devices.
Rx/Tx LED Transmission /Reception activity
SCADA Supervisory Control And Data Acquisition. A general term referring to systems
that gather data and/or perform control operations.
SNTP Simple Network Time Protocol - Protocol for synchronizing the clocks of com-
puter systems over packet-switched, variable-latency data networks. Uses UDP
as its transport layer.
Static IP Address A fixed address assigned to a computer or device that is connected to a network.
Static Routing Forwarding data in a network via a fixed path.
Subnet Mask An Ethernet address code that determines the size of the network.
Switch A data switch that connects computing devices to host computers, allowing a
large number of devices to share a limited number of ports.
Sync Data transmitted on a wireless network that keeps the network synchronized.
TCP Transmission Control Protocol - A network protocol for transmitting data that re-
quires acknowledgement from the recipient of data sent.
TCP/IP Transmission Control Protocol/Internet Protocol - A set of protocols to commu-
nicate over a network.
TDD Time Division Duplex - Allows (virtually) simultaneous transmission in both di-
rections. The uplink and downlink transmissions use the same frequency, but are
allocated different time slots.
Telnet A user command and TCP/IP protocol used for accessing remote PCs.
TFTP Trivial File Transfer Protocol – UDP/IP based file transfer protocol.
Topology The physical layout of a network.
Transparent A transparent unit transmits all data without regard to special characters, etc.
Terminal Server Acts as a converter between Ethernet/IP and RS-232 protocols.
Tx/Rx LED Airlink data activity
UDP User Datagram Protocol - A network protocol for transmitting data that does not
require acknowledgement from the recipient of the data that is sent.
Upgrade To replace existing software or firmware with a newer version.
URL Universal Resource Locator - The address of a file located on the Internet.
VPN Virtual Private Network - A security measure to protect data as it leaves one net-
work and goes to another over the Internet.
WINIPCFG A Windows 98 and Me utility that displays the IP address for a particular net-
working device.
WLAN Wireless Local Area Network - A group of computers and associated devices that
communicate with each other wirelessly.