Glossary - Yamaha HUB Owner's Manual

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Glossary

Glossary
This glossary contains terms relevant to NetworkAmp Manager, the ACU16-C, and
NHB32-C. A wealth of information about CobraNet, with sections especially for designers
and installers, is available on the Peak Audio Web site at http://www.peakaudio.com. If you
are designing a network, we strongly recommend that you visit this Web site and study the
information available in order to take full advantage of the CobraNet technology.
100Base-T:
100Base-FX:
transmission distance of two kilometers. Single mode fiber supports distances of over 100
kilometers.
100Base-TX:
RJ-45 connectors. These cables are readily available in a range of lengths and colors. The
maximum allowed cable run in an 100Base-T Ethernet network is 100 meters. If you need
to make custom cables, be sure to maintain the natural twist of the conductors as close to
the connector as possible. More than 25 mm of untwisted cable can affect performance. If
you're using cable ties, don't tighten them so as to deform the outer insulation, and do not
bend cables tightly. Doing so may affect the cable's impedance and degrade performance.
1000Base-T:
APJ:
Asynchronous:
devices that are not synchronized by a common clock, in which data is sent intermittently
rather than in a steady stream. CobraNet's Serial Bridge is asynchronous. Contrast with Iso-
chronous.
Auto-negotiation:
in order to determine half/full-duplex operation and data transfer rate (e.g., 10, 100, 1000
Mbps) before actual data transmission commences. Auto-negotiation only works on
switched networks. With repeater networks, all data transfers are half-duplex and the trans-
fer rate is determined by the slowest device on the network. All CobraNet interfaces support
auto-negotiation.
Bundle:
one bundle. A single bundle can carry eight channels of 20-bit/48 kHz digital audio, or
seven channels of 24-bit/48 kHz digital audio (with a latency of 5.33 ms). Bundles are num-
bered from 1 through 65,279. Bundles can be transmitted one-to-one (unicast) or
one-to-many (multicast). Network efficiency can be optimized by using all eight channels
in each bundle instead of, for example, using four channels in two bundles or two channels
in four bundles. See also Multicast bundle and Unicast bundle.
Bundle 0:
Net devices to disable transmission or reception as necessary.
CAT3:
and is used for 10Base-T Ethernet networks.
CAT5:
and is used for 100base-TX Ethernet networks.
CobraCAD:
testing of CobraNet network designs. The latest version includes device icons for the
ACU16-C and NHB32-C.
NetworkAmp Manager—Owner's Manual
See Fast Ethernet.
Fast Ethernet utilizing multimode fiber optic cables, with a maximum
Fast Ethernet utilizing Category 5 (CAT5) twisted pair data grade cables and
See Gigabit Ethernet.
The file name extension of NetworkAmp Manager projects (e.g., My project.apj).
Not synchronized. Often used to describe communications between
The automatic negotiations that go on between two network devices
CobraNet distributes digital audio data in bundles. One Ethernet packet contains
Not really a bundle as such, more of a null setting that can be made on Cobra-
Category 3 twisted pair cable supports a maximum data transfer rate of 10 Mbps
Category 5 twisted pair cable supports a maximum data transfer rate of 100 Mbps
Freely available software from Peak Audio for verification and performance