Siemens RM400 C Series Operating Manual page 200

Glossary
streaming mode
A cartridge tape drive is operating in streaming mode when data is written or
read without the tape halting.
synchronous transmission
A form of data transmission in which data bits are transmitted from the sender
to the receiver at regular time intervals. Thus there is no need for start and stop
bits. The time intervals are set by special synchronizing characters sent before
the start of data transmission proper. Synchronous transmission is faster and
more efficient than asynchronous transmission.
system unit
The system unit is the central unit of the system. It comprises the system
cabinet, the processor board, the controllers, and those peripherals which are
installed in the system cabinet.
terminal
Terminal is another name for a display workstation. It is the end device in a
system for data transmission, which is set up for sending and/or receiving data.
It consists of a screen and a keyboard.
terminal attachment concentrator (TAK)
Screens and printers can be connected to the system unit by means of this
connection box for the TACSI attachment concept.
thick Ethernet
Thick Ethernet (also known as 10 base 5) is the conventional type of Ethernet,
which uses "Yellow Cable" as its transmission medium. This Ethernet variant
enables the cable segments to cover longer distances than thin Ethernet.
thin Ethernet
Thin Ethernet (also known as Cheapernet or LAN 10 base 2) is a low-cost
Ethernet variant, the distinguishing feature being that the cable segments
cover shorter distances than those covered by thick Ethernet. Thin Ethernet
uses coaxial cable which is lighter and less expensive than "Yellow Cable", and
uses BNC-T connectors for physical connections between stations.
transceiver
A word derived from transmitter and receiver denoting a device that both
transmits and receives data. Transceivers are used to provide access to
Ethernet networks. They perform the following functions: forwarding, monitoring
(collision detection), receiving, and failure detection.
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RM400 C Models U24802-J-Z146-2-7600