Grass Valley JEP-100 v.1.2.0 - Manual (Page 74)

72 JEP-100 Installation and Operating Manual
Glossary
see CROSSPOINT BUS .
MDI
Multiple Document Interface.
MIDI
Musical Instrument Digital Interface. Serial
interface bus used in Triton switchers.
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 some-
times 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; time out is 6 characters
(1.72 msec).
multicast
see IP MULTICAST .
N
native protocol
GV Series 7000 Signal Management System
Protocol via RS-232, RS-422, SLIP, or Ether-
net. Maestro commands to an Encore control
system use this protocol.
node
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 catego-
ry/number mode).
numeric set
Factory-supplied configuration set used to
set up and operate the routing switcher in the
minimum possible time.
O
OPM
OUTPUT MONITOR .
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 perfor-
mance without interrupting normal opera-
tions. A separate, internal switching system
is used to switch the Monitor Output to any
output of the switcher.
P
path finding
Switching technique allowing two or more
routing switchers to operate as a system,
where each switcher can access the other's in-
puts 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 con-
fused with
THREE - STAGE S WITCHING .
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.
physical level
see LEVEL .