User manual QSC AUDIO RAVE 188

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[. . . ] RAVE USER MANUAL w w RAVE 80 RAVE 81 RAVE 88 RAVE 160 RAVE 161 RAVE 188 Digital Audio Router (8 AES3 outputs) Digital Audio Router (8 AES3 inputs) FPO w w w w Digital Audio Router (4 AES3 inputs + 4 AES3 outputs) Digital Audio Router (16 analog audio outputs) Digital Audio Router (16 analog audio inputs) Digital Audio Router (8 analog audio ins + 8 analog audio outs) Rev. A 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 98765432109876543210987654321 27 Table of Contents RAVE Digital Audio Router User Manual Warning Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] (The digital AES3 models, however, do not require any such adjustment. ) These adjustments are done internally by placing or arranging jumpers on the main circuit board. For access to these jumpers, you must first remove the top cover of the RAVE unit as follows. Dangerous voltages within the enclosure may be of sufficient magnitude to constitute a risk of electric shock to humans. To remove cover, first detach the AC power cord, then remove screws from top, bottom, and sides. Required tools: medium Phillips screwdriver Then lift the rear edge of the top cover about ¼ inch, or 6 mm, and slide the cover forward about 2 inches, or 5 cm. Re-installing the cover is the reverse of removal. Be sure to take proper protective measures, such as working on an anti-static surface and wearing a grounding wrist strap, before touching any circuitry inside. 12 Input Level Sensitivity (RAVE 161 and 188 only) Input level sensitivity is the rms analog signal level at which a sinusoidal waveform will produce a digital full scale signal in the device. The available settings are +24dBu, +18dBu, and +12 dBu (reference: 0 dBu = 0. 775 volt), which are 12. 3, 6. 1, and 3. 1 volts rms, respectively. Check the specifications of the audio equipment driving the inputs to determine the correct setting. Each channel's sensitivity is independent of the others and must be set individually. · First, locate the input sensitivity-selection jumper headers, which are in a row of small groups of pins (6 in each group) on the top side of the circuit board, somewhat midway between the front edge of the board and the rear edge. You'll see a row of 16 headers on a RAVE 161, or eight on a RAVE 188­one for each channel, in other words. · Determine what the correct setting should be for each channel, and set the jumpers as shown in the illustration. There is also a legend printed on the circuit board showing the jumper setting options. Save any unused jumpers for future use. Output Levels (RAVE 160 and 188 only) The output level setting determines the absolute rms level of an analog signal produced by a digital full scale sinusoidal signal. The four selections available are +24dBu, +18dBu, +12dBu, and +6dBu (reference: 0 dBu = 0. 775 volt)--12. 3 volts, 6. 1 volts, 3. 1 volts, and 1. 5 volts rms, respectively. These voltages respectively correspond to 17. 4, 8. 7, 4. 4, and 2. 2 volts peak. . · As with setting the input level, the output level for each channel is set by arranging jumpers on the pins of a header. These headers are located near the rear edge of the circuit board, and there is one header for each analog output: eight in the RAVE 188, and 16 in the RAVE 160. · Arrange jumpers as shown in this illustration. A legend printed on the circuit board also shows the jumper configurations. Save any unused jumpers for future use. 13 RACK MOUNTING (ALL MODELS) A RAVE unit is 1 RU (1 rack space) high and mounts in any standard 19-inch equipment rack. The top cover of the chassis must be in place and properly secured with screws before you can mount the RAVE unit. · · Use four mounting screws to fasten the front ears of the RAVE unit to the mounting rails of the rack. The chassis of a RAVE unit also has mounting ears on its rear corners; if the rack also has rear rails, it's a good idea to support the RAVE unit in the rear, too. If you have several units stacked in the rack, at least support the bottom one at the rear corners. · Dress and support any cables that are to attach to the RAVE unit so that their weight doesn't put an undue strain on their connectors when you attach them. Be careful when installing the unit in an equipment rack; its cooling vents must not be obstructed. Prendre soin lors de l'installation de l'unité dans un bâti d'équipement; on ne doit pas obstruer les bouches de ventilation. IV. Connections ETHERNET CONNECTION (ALL MODELS) A female modular RJ-45 jack on the rear panel is for connecting the RAVE unit to a 100baseTX Ethernet. · To connect the network cable to the RAVE unit, insert the RJ-45 male connector--with its locking tab facing down, the only way the connector will fit into the jack--into the jack until the tab clicks into place, just like connecting a modular telephone cable to a telephone. · To disconnect the network cable from the RAVE unit, grasp the connector and squeeze up on the locking tab, then pull it out of the RJ-45 jack. A 100baseTX network connection requires CAT-5 grade cable. The cable length between the RAVE unit and a 100baseTX hub should not exceed 100 meters (328 feet). Suitable Ethernet cable is readily available at most computer suppliers. To make your own, see the Appendix for connector pinouts. Connecting to Ethernet ANALOG AUDIO CONNECTIONS Analog audio inputs and outputs connect through detachable terminal strip headers on the rear panel of the RAVE unit. [. . . ] Thus, there is always a possibility that the office traffic will impinge temporally on the RAVE system's requirements. 21 WHAT HAPPENS IF I RUN OUT OF CHANNELS? Network channels automatically drop when available network bandwidth is exhausted. The network channels with the highest address numbers will be the first to be dropped. The "TX Error" indicator will light when a transmitting unit cannot send due to insufficient bandwidth. If this occurs when the network is carrying additional traffic, such as an office LAN, the unregulated LAN traffic is the likely culprit. [. . . ]

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