Lab.gruppen LM 44 - Manual (Page 57)

Appendix
51
Lake LM Series Operation Manual Rev 1.2.8
Router 5: Unassigned
Router 6: Unassigned
Router 7: Unassigned
Router 8: Unassigned
8.3.2.2 Router Defaults (LM 44)
Router 1: AES1 (Ch.1) as Priority 1, Analog 1 as Priority 4
Router 2: AES1 (Ch.2) as Priority 1, Analog 2 as Priority 4
Router 3: AES2 (Ch.3) as Priority 1, Analog 3 as Priority 4
Router 4: AES2 (Ch.4) as Priority 1, Analog 4 as Priority 4
Router 5: AES3 (Ch.5) as Priority 1, Analog unassigned
Router 6: AES3 (Ch.6) as Priority 1, Analog unassigned
Router 7: AES4 (Ch.7) as Priority 1, Analog unassigned
Router 8: AES4 (Ch.8) as Priority 1, Analog unassigned
Table 8-2:
8.4 Glossary of Terms, Acronyms and Abbreviations
The explanations given in Table 8-3 below are based on the specific use of each term in this manual. The
definitions are not intended to be exhaustive and many of these terms have wider meanings.
Term Description
100/1000 Base-T
100/1000 Base-T is IT industry-speak for different standards of Ethernet network. This term incorporates 100 Base-TX, which operates
at 100 Mbps, and 1000 Base-T which operates at 1000 Mbps (1 Gbps).
Access Point See Wireless Access Point.
Auto-Sensing The Ethernet ports automatically determine the base speed of the network they are connected to (10 Base-T or 100 Base-T) and
configure themselves appropriately. This is termed auto-sensing.
Auto-Uplink The Ethernet ports can operate with either straight or crossed network cables. This ability to connect correctly with either type is
termed auto-uplinking.
Auxiliary Output Some of the configurations possible in the Lake processing system Modules result in a single audio processing channel being created in
addition to a crossover. This is termed an Auxiliary output.
Backbone Large Ethernet networks are often implemented with a very high speed “trunk” part of the network topology feeding main switches,
which in turn support smaller, lower-speed local networks. The term backbone is used to describe such a trunk.
Bandwidth The bandwidth of a signal channel or interconnection is the range of frequencies it is able to handle. The term can be applied to both
audio channels and Ethernet networks.
Cat-5e/Cat-6, etc.
Designations of industry-standard cables suitable for Ethernet networks using four twisted pairs of conductors. Often referred to as UTP
cable (Unscreened Twisted Pair). Cat-5 has generally been replaced by Cat-5e (e = ‘enhanced’). Either Cat-5e or Cat-6 cable are suitable
for networking Lake and Lab.gruppen devices.
Chain
An Ethernet network comprising several devices interconnected using the Secondary connectors to daisy-chain the units together is an
example of a network with a chain topology.
Clock
Digital audio is produced by sampling analog audio at a known, fixed rate, controlled by some form of master clock. Problems can occur
when interconnecting two pieces of digital audio equipment if their internal master clocks are not synchronized. Various techniques may
be employed to ensure that this is the case.
Contour
Terminology given to a Frame or Module that denotes it is configured as a Loudspeaker Processor, normaly featuring crossovers and
multiple outputs fed from the same input.
Crossed Network Cable
An Ethernet cable in which four of the eight conductors (pins 1, 2, 5 & 6) are not wired pin-to-pin. Such a cable is required in conventional
IT networks to connect two PCs together without using a hub or switch. The auto-uplink feature of the Ethernet ports allows crossed
cables to be used if wished. See also Straight network cable.
Dante
A new-generation audio data protocol developed by Audinate ® Pty Ltd, allowing multichannel high-resolution digital audio plus control
data to be transmitted via standard IT-industry networks using TCP/IP data packets. The Lake processing system integrated within the
LM Series device includes a dual-redundant Dante network interface, providing digital audio inputs and outputs via Ethernet.
dBu dBu’s are usually used instead of voltages to describe signal levels in audio systems. A signal level of 0 dBu may be taken as 0,775 Vrms.