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Glossary−7CM 4000 Installation and Operating Manual
NetBEUI −
NETBIOS Extended User Interface. Windows for Workgroups ships with the NetBEUI protocol to
interconnect computers running Windows for Workgroups, MS−DOS, Windows NT, and Microsoft LAN
Manager−compatible networks, in a local area network environment. NetBEUI is a small, efficient protocol
designed for use on a departmental LAN of 20 to 200 workstations. For enterprise−wide networks where a
routable protocol is required,
TCP/IP or IPX should be used.
NetBIOS − Network Basic Input/Output System. An operating system interface for application programs used
on IBM personal computers that are attached to a LAN.
node − a device on a network, such as a controller board, control panel, file server, or VTR.
numeric mode − switcher selection method using input and output numbers only (as opposed to
category/number mode).
numeric set − a factory−supplied configuration set used to set up and operate the routing switcher in the mini-
mum possible time.
override − one−button selection of an input. Override button of a control panel is programmed to select a
particular input that is used heavily.
output monitoring − feature of routing switcher which allows control system to verify switcher performance
without interrupting normal operations. A separate, internal switching system is used to switch the Monitor
Output to any output of the switcher.
party line − proprietary network technology originally developed by
TELEMATION, Inc. to control distribution
switchers. Uses unterminated 75−ohm coaxial cable from CE 2200 or PL 3000 looped through all control
panels. Not to be confused with 50−ohm
THIN NET technology used in Jupiter. Two types are commonly in use:
the extended party line, which allows control of 250 inputs and 150 outputs; and the super party line, which
allows control of 250 inputs and 250 outputs.
path finding − a switching technique allowing two or more TVS/TAS−2000 or later routing switchers to operate
as a system, where each switcher can access the other’s inputs through a number of tie lines. Because the tie
lines are limited, the path will be blocked when all lines are busy. Not to be confused with
THREE−STAGE
SWITCHING
.
PCI − Peripheral Component Interconnect, a local computer bus standard developed by Intel Corporation. Most
PCs include a PCI bus in addition to a more general ISA expansion bus.
Philips Broadcast − successor to Philips Digital Video Systems (
DVS). Now part of Grass Valley.
physical level − see
LEVEL.
PL board − PL 3000 Party Line Interface. Now obsolete.
PMEM − battery−protected memory.
polling − communication technique where central controller polls (addresses) each device on a party line in turn.
When so addressed, a particular device can then send or receive data without being interrupted.