Grass Valley VM 3000 System Controllers v.7.4 - Manual (Page 755)

Glossary−7
mnemonic − abbreviation, usually four characters long, for a particular input or output. Mnemonics appear in the
LED status windows of the control panels. However, the term is sometimes used to define an input or output in
the sense of a logical device name.
MPK − message−per−keystroke. Protocol developed by Thomson for control panels and devices connected to
the Jupiter Serial bus. Baud rate is variable, with 8 data bits, 1 start bit, 1 stop bit, and even parity; timeout is 6
characters (1.72 msec). See also
SERIAL BUS .
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 .