Lake LM 26 Operation Manual page 53

Term Description
Frame Presets are a class of Presets within the Lake processing system. Up to 100 can be stored in the hardware device, and each holds
Frame Preset
the complete configuration of all Modules and the Modules' internal settings.
Describes the speed of Ethernet data transfer for devices that transmit Ethernet frames at a rate of a gigabit per second, as defined by
Gigabit Ethernet
the IEEE 802.3-2008 standard.
GPIO
The General Purpose Input/Output (GPIO) port on a LM 26 allows two-way communication with external devices for certain functions.
A type of network interface device with multiple Ethernet ports. Data arriving at any port is sent to all others. Hubs have been largely
Hub
replaced by Switches.
The amplitude of an audio signal at the point where it is applied to the input of the device, or at the input of an intermediate stage within
Input Level
it. An analog input signal level will be expressed in dBu's, while a digital input signal level in dBfS (dBs below digital clip level; fS =
full-scale)
Every item of equipment connected to an Ethernet network has a unique address called the IP address, so that data gets to the correct
IP Address
place. IP addresses are written as four groups of three decimal numbers between 0 and 255. In a system consisting of Lake Processors
and a Lake Controller they are assigned and detected automatically.
IP subnet masks are required in all IP networks. The subnet is determined by the size and type of network being used. For small
IP Subnet Mask
networks (less than 254 addresses) a subnet mask of 255.255.255.0 can be used. (A Class C network).
Iso-Float is Lake's proprietary method of electronic balancing, which provides a particularly high level of isolation and immunity from
Iso-Float
ground loops.
The Lake Controller is the software application used to control LM 26 Processors, PLM Series and other Lake devices. This software
Lake Controller
application provides additional functionality and allows various grouping functions for simultaneous control of multiple Lake Processing-
enabled devices.
The small but finite delay incurred by audio signals when they are transformed into the digital domain, processed digitally and then
Latency
converted back into analog signals. In the Lake system, latency is assured to be constant.
This term refers to older Lake audio equipment which may form part of an audio system (i.e. Lake Contour Pro 26, Lake Mesa Quad EQ
Legacy Lake Device
and the Dolby Lake Processor). The Lake Controller has the capability to control all Lake legacy products.
LimiterMax
LimiterMax is the name given to Lake's proprietary package of dynamics control which forms part of the Lake Processing system.
An analog audio amplifier, usually with zero gain, having very low output impedance and high drive capability. They are used for
Line Driver
transmitting balanced analog audio over very long cables.
Linear Phase Crossover
See FIR Filters
In addition to an IP address, every device on an Ethernet network has a MAC address. This address is fixed at the time of manufacture,
MAC Address
and is effectively the permanent identifier of the physical unit. MAC stands for Media Access Control
MaxPeak
Lake's LimiterMax provides independent dynamics control over signal peaks (MaxPeak) and the average signal level (MaxRMS).
MaxRMS
See MaxPeak.
Module is the term used in the Lake Controller to describe the virtual set of signal processing that routes an audio input to the various
Module
frequency-weighted outputs of a crossover. The processing system within the device allows for two Modules, each of which may be
assigned a range of crossover configurations, input sources, etc.
A class of Preset within the Lake processing system. A Module Preset (Module file) contains all the configuration data and settings for
Module Preset
one Module, and is saved in the Lake Controller software, not in the hardware device.
A device on an Ethernet network which is not communicating with the rest of the network either due to a fault or intentionally is said to
Offline
be offline.
Online
A device on an Ethernet network which is fully operational and communicating with the rest of the network is said to be online.
Two or more e.g. inputs which are wired together so that all inputs are connected to the same source are said to be paralleled. Signal
Parallel
levels will be reduced if too many inputs are paralleled; in the case of AES3, this may result in a complete loss of audio.
Any control function which can be adjusted by the user to one of several different values is termed a parameter. For example, input level,
Parameter
gain, delay, and limiter threshold are all parameters.
Pass-Through Cable
See Straight network cable.
Ping is a term coined by the IT industry to the procedure of sending a command over a network to a particular Ethernet device asking it
to confirm its identity and possibly reply with additional information. Thus an Lake device on the network can be pinged from the Lake
Ping
Controller; on receipt of the 'ping', the hi-intensity white LED on the front panel illuminates. Reverse pinging is also possible, whereby
the ping is instigated from Lake hardware device and a visual identification of the processor registers in the Lake Controller software.
Preset
A complete frame configuration that is stored in the device hardware.
Primary Ethernet Port
The Primary Ethernet port on the is the means of connecting the device to a network. See also Secondary Ethernet Port.
Abbreviation of Power Supply Unit. The PSU in any item of electronic equipment converts the AC mains into a set of internal DC voltages
PSU
which run the electronic assemblies themselves.
RJ45
RJ45 connections are the industry-standard connectors for Ethernet ports.
Router
As far as networks of the type discussed in this manual are concerned, see Switch.
The Secondary Ethernet port can be used either as a daisy-chain output, repeating the network connection at the Primary port, or for the
Secondary Ethernet Port
connection of a separate second network for full redundancy.
A network topology which uses a network switch to connect to individual Lake devices. Each device connects to one port on the switch
Star Topology
with its own cable, thus the network looks like a star when drawn as a diagram with the switch at the centre.
LM 26 Operation Manual rev 1.2.3
Appendix
47