Apex Digital apex 10 Manual de servicio descargar pdf (Pagina 124)

126 APEX — Installation and Service Manual

Glossary

2. On the MC 3020L Linkage panel, the

LOCK button is used to prevent any inter-

ruption in the assignment of a machine to a

control panel.

logical level mapping

In these systems, the same physical level

number can be used on more than one logical

level. For example, you could have a switch-

er with Left Audio on level 2, and with Right

Audio also on level 2. This technique can

sometimes help reduce overall switcher size,

but it requires special entries to control sys-

tem tables.

logical level name

see LEVEL.

logical level number

see LEVEL.

logging

Maintaining a disk file of Jupiter LAN activ-

ity, including switches, machine control com-

mands, configuration set downloads, error

messages, etc. Each file covers a twenty-four

hour period.

LOS

Loss of Signal.

M

MADI

Multiplexed Audio Digital Interface. Inter-

face bus used in Dune switchers.

matrix bus

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). See also

SERIAL BUS.

N

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.

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