Instruction/ maintenance manual of the product S series QSC
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1 RA VE “S” series Digital Audio Router USER MANUAL ▼ ▼ ▼ ▼ ▼ RA VE 80s (8 AES3 outputs) ▼ ▼ ▼ ▼ ▼ RA VE 81s (8 AES3 inputs) ▼ ▼ ▼ ▼ ▼ RA VE 88s (4 AES3 inputs + 4 AE.
2 © Copyright 2002 QSC Audio Products, Inc. All rights reserved. “QSC” and the QSC logo are registered with the U.S. Patent and T rademark Office.
3 RA VE “ S ” Series Digital Audio Router User Manual Warning Notices ................................................................................................................ ................................. 2 Introduction ...............
4 RA VE™ Digital Audio Router products provide a means of transporting CobraNet™ audio signals over a Fast Ethernet network. Using standard network hardware and physical me- dia, a RA VE system ha.
5 Power LED Bundle assignment selector switches (behind cover) Network status LEDs Audio signal level LEDs Front view of a RAVE 161s-24; other models are similar Rear view, from top: RAVE 160s-24, RAV.
6 AES 3 — A digital audio format specification approved by the Audio Engineering Society and European Broad- cast Union for inter -device conveyance of a dual- channel (stereo) digital audio signal. Also called AES/EBU. This specification is periodically revised and amendments are published by the AES.
7 Repeater — Network repeaters are commonly referred to as Ethernet multi-port hubs. A data signal arriving in any port is reproduced out all other ports on the hub. A repeater hub does not buffer or interpret the data passing through it. An Ethernet network is typically wired in a star configuration and the repeater hub is at the center .
8 Ethernet networks are used most often for data communica- tions, such as with file or print sharing on an office LAN (Lo- cal Area Network). A typical application might include a num- ber of PCs or workstations, servers and shared printers all connected to common Ethernet hardware.
9 In default mode, the signals from the first 8 audio channel in- puts will be grouped together in a bundle whose “ network iden- tifier ” number is specified from the front-panel hexadecimal switches or through the management interface.
10 Channel Routing A RAVE network handles routing in bundles of up to eight audio channels. Each bundle of audio transmitted on the network oc- cupies a unique identifier , or number . In stand-alone mode, each RA VE device handles two bundles — two sent, two received, or one of each.
11 PRE-INST ALLA TION PREP ARA TION: ANALOG AUDIO SIGNAL LEVELS (RAVE 160/161/188 ONL Y) CAUTION: Detach the power cord before removing the top cover. Dangerous voltages within the enclosure may be of sufficient magnitude to constitute a risk of electric shock to humans.
12 • First, locate the input sensitivity-selection jumper headers, which are in a row of small groups of pins (6 in each group) on the topside of the circuit board, somewhat midway between the front edge of the board and the rear edge. Yo u ’ ll see a row of 16 headers on a RAVE 161, or eight on a RA VE 188 – one for each input channel.
13 RACK MOUNTING (ALL MODELS) A RA VE unit is 1 RU (1 rack space) high and mounts in any standard 19-inch wide equipment rack. The top cover of the chassis must be in place and properly secured with screws before you can mount the RA VE unit. • Rack mounting is optional.
14 ANALOG AUDIO CONNECTIONS The analog RA VE models (RAVE 160 /161 and 188) use normal analog balanced audio inputs and outputs, with three terminals per channel: Hi (+), Lo (-) and Shield.. Analog audio inputs and outputs connect using detachable terminal strip headers on the rear panel of the RA VE unit.
15 Channel numbers and connector pinouts are labeled on the rear of the unit, as shown in the illustration above. The actual channel assignment depends on the model. DIGIT AL AUDIO CONNECTIONS The digital RA VE models (RA VE 80/81/88) use the AES3 (also known as AES/EBU) digital audio standard.
16 2A 250V 20 x 5 mm FUSE (2 required) • The detachable AC power cord connects to the RA VE at the rear-panel IEC connector . • There is no power switch; the AC disconnect device is the detachable power cord. • A RA VE operates on line voltages from 100 to 240 VAC, 50 to 60 Hz.
17 REDUNDANT CONFIGURA TION (hardware setup) T o slave one RA VE unit to another , connect a male-to-male BNC jumper cable from the sync output of the master unit to the slave input of the redundant unit. Select the same bundle assignment(s) on the slave unit as are selected on the mas- ter unit.
18 The RAVE “ s ” series AES/EBU input models provide some additional means for synchronizing the CobraNet network and deriving on-board clocks. In addition to the on-board PLL and external synch inputs available on all models, the AES/EBU input models allow the user to synchronize the network to a 48 kHz AES/EBU input stream.
19 Connections: Synchronizing the CobraNet Network to an AES/EBU Stream Method 2: Use the recovered AES 48 kHz clock as an “ external clock ” source. When the jumper at header J37 is set to “ AES ” , the CobraNet interface uses the recovered 48 kHz clock at the first XLR connector (inputs 1 and 2) as the external synchronization clock.
20 The eight status indicator LEDs display the operating condition of the RA VE unit and its connection to the Ethernet network. They are color coded such that green LEDs, when illuminated, signify a good or normal condition, while red LEDs signify a problem.
21 Tx This LED illuminates green for at least 50 milliseconds while the unit is transmitting Ethernet data. This indicator will blink when transmit activity is present.
22 When powering up a RA VE with CobraNet version 2, the major and minor release of the firmware is displayed on the two 8-channel groups in binary format. The left group displays the major release and the right group displays the minor release. For example, if the CobraNet version in the RAVE is 2.
23 ERROR REPORTING Operation: Audio Signal Level Indicators One of the most useful features of the metering LEDs on RA VE products is that they indicate CobraNet connectivity infor- mation by providing “ bundle activity ” status.
24 A RAVE network routes audio signals in bundles of up to 8 channels. Behind the removable cover on the front panel are two pair of hexadecimal switches for assigning bundles to the 8-channel audio groups. Note that the following discussion only applies to front panel configuration of RA VE devices (stand-alone or “ hardware ” mode).
25 Switches set to “ 10 ” through “ FE ” hex assign unicast bundles. Switches set to “ 01 ” through “ 0F ” hex assign multicast bundles. Switch settings “ 00 ” and “ FF ” hex are reserved for special functions. “ FF ” hex puts the unit into utility mode for programming and also forces software kill.
26 There are a number of ways to design a CobraNet LAN. Sev- eral resources such as device specifications, Architect & Engineer ’ s specifications, topology references, lists of ap- proved network hardware and design guidelines are avail- able on the Peak Audio website (www .
27 When a switch is shared with non-CobraNet data, it should be configured so that CobraNet audio is isolated from conventional data communications. Partitioning is usually accomplished by enabling multiple VLANs. Co- braNet data should be given the highest network prior - ity in order to prevent the loss of audio.
28 REPEA TER NETWORKS • RA VE supports operation on network repeaters. These repeaters should be 100 Mbps class II devices. Collisions are prevented through CobraNet ’ s propri- etary “ order persistent ” media access scheme. RA VE invokes this access scheme by auto-sensing its link partner (network hardware).
29 Specifications GENERAL AC Line V oltage: 100V to 240V , auto-configuring AC Line frequency: 50 Hz to 60 Hz, auto-configuring Maximum AC Line Current Draw: 600 mA @ 100V Thermal Operating Range: 0 .
30 Specifications ANALOG OUTPUTS (continued) Output Impedance: < 200 ohms (electronically balanced) Frequency Response: 20 Hz to 20 kHz, ±0.5 dB Dynamic Range, typical: 102 dB FS @ 997 Hz Dynamic Range, worst-case: >100 dB FS @ 997 Hz Idle Channel Noise (A-weighted): 104 dB FS (20 Hz to 20 kHz), typical THD+N @ 997 Hz: .
31 AUDIO BUFFERING 256 samples (5.333 microseconds) NETWORK Protocol: 100 Mbps FAST Ethernet (FE) Configuration: Network repeaters OR switches Audio Channel Capability: 64 channels maximum PER repeate.
32 ETHERNET CABLING This diagram shows the pinout for standard unshielded twisted-pair (UTP) network cable. Both ends of the cable are wired identically.
33 Appendix: Resources QSC RA VE resources: http://www .qscaudio.com - Visit our website regularly for up-to-date RA VE information such as: T echnology papers Configuration procedures Management aids.
34 How to Contact QSC Audio Products Address: QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, CA 92626-1468 USA T elephone Numbers: Main Number (714) 754-6175 Sales Direct Line (714) 957.
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36 QSC Audio Products, Inc., 1675 MacArthur Boulevard Costa Mesa, California 92626 USA PH: (714) 754-6175 FAX: (714) 754-6174 RAVE is a trademark of QSC Audio Products, Inc.
An important point after buying a device QSC S series (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought QSC S series yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data QSC S series - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, QSC S series you will learn all the available features of the product, as well as information on its operation. The information that you get QSC S series will certainly help you make a decision on the purchase.
If you already are a holder of QSC S series, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime QSC S series.
However, one of the most important roles played by the user manual is to help in solving problems with QSC S series. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device QSC S series along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
