QSC RAVE 80 User Manual

27RAVEUSER MANUAL▼▼▼▼▼RAVE 80 Digital Audio Router (8 AES3 outputs)▼▼▼▼▼RAVE 81 Digital Audio Router (8 AES3 inputs)▼▼▼▼▼RAVE 88 Digital Audio Router

9Data signals sent over optical fiber don’t degrade as much as they do over copper wiring, and they are immuneto induced interference from electromagn

10The illustration at right shows a simple 2-node network similar to the one decribed before, except nearly all ofthe interconnecting UTP cable betwee

11in that its deterministic nature affords a bit more tolerance of delay than unregulated, non-deterministic networktraffic can handle: a network span

12III. InstallationPRE-INSTALLATION PREPARATION: ANALOG SIGNAL LEVELS (RAVE 160, 161, AND 188ONLY)The RAVE models which handle analog audio inputs an

13Input Level Sensitivity (RAVE 161 and 188 only)Input level sensitivity is the rms analog signal level at which a sinusoidal waveform will produce a

14Connecting to EthernetIV. ConnectionsETHERNET CONNECTION (ALL MODELS)A female modular RJ-45 jack on the rear panel is for connecting the RAVE unit

15To connect balanced inputs, insert the +, -, and shield into the header as shown at left.To connect unbalanced inputs, connect the signal conductor

16RAVE 81This model features eight AES3 input channels, a total of 16 audio channels. The AES3 inputs are labeled 1 through8 on the rear of the unit.R

17SLAVE INPUTThe slave input is another BNC jack. Its use is to allow a RAVE unit to “slave” itself to another RAVE unit, as abackup in mission-critic

18V. OperationSTATUS INDICATORSThe eight status indicator LEDs display the operating condition of the RAVE unit and itsEthernet network. They are col

1Table of ContentsRAVE Digital Audio Router User ManualWarning Notices...

19The RAVE units in a common network select a conductor according to three priorities. The priorities are, fromhighest to lowest:1. Models 161 and 81

20ROUTINGA RAVE network routes audio sig-nals in groups or groups of 8 chan-nels, as the group diagram of asample RAVE network illustratesat right. Be

21VI. FAQ: Frequently Asked QuestionsCAN I BUY HUBS, CABLES, AND OTHER EQUIPMENT FOR MY RAVE NETWORKANYWHERE?Yes. One of the design goals of RAVE tec

22WHAT HAPPENS IF I RUN OUT OF CHANNELS?Network channels automatically drop when available network bandwidth is exhausted. The network channelswith th

23VII. SpecificationsAnalog AudioSample rate 48 kHzA/D converters 20 bitsD/A converters 20 bitsNetwork transmission 20 bitsTHD 0.007% worst case,0.004

24VIII. AppendixETHERNET CABLINGThis diagram shows the pinout for standard unshielded twisted-pair (UTP) network cable. Both ends of the cableare wire

25IX. Address & Telephone InformationAddress:QSC Audio Products, Inc.1675 MacArthur BoulevardCosta Mesa, CA 92626-1468 USATelephone Numbers:Main N

26

28QSC Audio Products, Inc., 1675 MacArthur Boulevard Costa Mesa, California 92626 USA PH: (714) 754-6175 FAX: (714) 754-6174RAVE is a

2EXPLANATION OF GRAPHICALSYMBOLSThe lightning flash with arrowhead symbol,within an equilateral triangle, is intended toalert the user to the presence

3I. IntroductionRAVE Digital Audio Router products provide a means of transporting audio signals over a data network. Usingcommon Fast Ethernet as th

4GLOSSARYBelow are some terms used in this manual that RAVE users should be familiar with.AES3—A technological specification for inter-device conveyan

5Therefore, the CobraNet™ technology used in aRAVE system employs a regulated, deterministicsystem of packet timing to ensure consistent andreliable t

6Channel routingA RAVE network handles routing in groups of eight audio channels, and each group of eight transmitted on thenetwork makes up one netwo

7Two nodes with a 100baseTX hubAdvantages: greater network size—up to 200 meters (656 feet); high reliability; readily expandable; usesstandard Ethern

8Star topologyAdvantages: greater network size—up to 200 meters (656 feet); high reliability; readily expandable; usesstandard Ethernet patch cablesDi