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User’s Manual
RAC 104
Remote Volume and Tone Controller
68-782-01 Rev. C
12 08
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Precautions Safety Instructions • English Warning Power sources � This equipment should be operated only from the power source This symbol is intended to alert the user of important indicated on the product. This equipment is intended to be used with a main operating and maintenance (servicing) instructions power system with a grounded (neutral) conductor. The third (grounding) pin is in the literature provided with the equipment. a safety feature, do not attempt to bypass or disable it. Power d
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FCC Class A Notice This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communicati
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Table of Contents, cont’d ii RAC 104 � Table of Contents
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LR LR LR LR AUDIO CONTROLS AUDIO CONTROLS ADJUSTMENTS ADJUSTMENTS A B Vol. A B Vol. 12 34 BT arse sble 12 34 BT ar se sble VOLUME & TONE CONTROLLER VOLUME & TONE CONTROLLER AUDIO CONTROLS ADJUSTMENTS A B 1 3 Vo Bla . ss 2 4 Treble VOLUME & TONE CONTROLLER AUDIO CONTROLS ADJUSTMENTS A B Vol. 1 3 Bass 2 4 Treble VOLUME & TONE CONTROLLER Quick Start Guide — RAC 104 To install and set up the RAC 104 remote volume and tone controller, follow these steps and see the appropriate section of this manual
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Tx Rx RS-232 Quick Start Guide — RAC 104, cont’d Step 4 If the RAC 104 is to be connected to a computer or host controller for remote control, connect the host’s RS-232 cable to the RAC 104’s 3-pole captive screw RS-232 connector. Wire the connector as shown below. See chapter 3 for more information on remote control. Pin RS-232 function Description Transmit (Tx) Receive (Rx) 1 Tx Transmit data Ground (Gnd, ) 2 Rx Receive data 3 Gnd Signal ground Step 5 IN OUT A B A B Set the line level sel
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Table of Contents Chapter 1 � Introduction .......................................................... 1-1 About the RAC 104 ................................................................ 1-2 Features ...................................................................................... 1-2 Chapter 2 � Installation and Operation .......................... 2-1 Mounting the RAC 104 ........................................................ 2-2 UL rack mounting guidelines ...........................
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Table of Contents, cont’d Appendix A � Specifications, Part Numbers, and Accessories.............................................................................. A-1 Specifications ......................................................................... A-2 Included Parts ......................................................................... A-4 Accessories .............................................................................. A-4 All trademarks mentioned in this manual are the prop
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RAC 104 Chapter One 1 Introduction About the RAC 104 Features
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Introduction About the RAC 104 The Extron RAC 104 is a high-performance, four-channel remote audio controller that adjusts volume and tone for stereo or mono audio signals. Adjustments are made via the RAC 104’s front panel controls or through a device connected to the unit’s RS-232 connector. The four channels on the RAC 104 can be used as four discrete mono channels or can be tied into pairs as stereo channels. All channels input and output balanced or unbalanced signals on 5-pole captive sc
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Consumer and professional audio compatibility — Input and output line level can be set to consumer (-10 dBV) or professional (+4 dBu). Rack, furniture, and projector mountability — The RAC 104 can be mounted on an optional VersaTools or Universal rack shelf. Alternatively, it can be mounted under a desk, podium, or other furniture, or secured to a projector mount with optional brackets. Extron SI 26CT Two-Way Microphone Ceiling RS-232 Speakers Control Extron Zone 2 SW 6AV Switcher Mixer Extron
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Introduction, cont’d 1-4 RAC 104 � Introduction
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RAC 104 Chapter Two 2 Installation and Operation Mounting the RAC 104 Rear Panel Features and Cabling Front Panel Controls
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Installation and Operation Mounting the RAC 104 The RAC 104 can be set on a table or mounted on a rack shelf, under a desk or tabletop, or on a projector mount. UL rack mounting guidelines The following Underwriters Laboratories (UL) guidelines pertain to the safe installation of the RAC 104 in a rack. 1. Elevated operating ambient temperature — If installed in a closed or multi-unit rack assembly, the operating ambient temperature of the rack environment may be greater than room ambient tempera
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AUDIO CONTROLS AUDIO CONTROLS ADJUSTMENTS A B A B ADJUSTMENTS Vol. Vol. 1 3 Bass 1 3 Bass 2 4 Treble 2 4 Treble VOLUME & TONE CONTROLLER VOLUME & TONE CONTROLLER AUDIO CONTROLS A B ADJUSTMENTS Vol. 1 3 Bass 2 4 Treble VOLUME & TONE CONTROLLER Tabletop use Four self-adhesive rubber feet are included with the RAC 104. For tabletop use, attach one foot at each corner of the bottom side of the unit and place the unit in the desired location. Rack mounting For optional rack mounting, do not install t
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AUDIO CONTROLS ADJUSTMENTS A B Vol. 1 3 Bass 2 4 Treble VOLUME & TONE CONTROLLER Installation and Operation, cont’d Furniture mounting Furniture mount the RAC 104 using the optional MBU 123 mounting kit (Extron part #70-212-01) as follows: 1. Remove rubber feet if they were previously installed on the bottom of the RAC 104. 2. Attach the furniture mounting brackets to the RAC 104 with the machine screws provided. 3. Hold the RAC 104 with the attached brackets against the underside of the table o
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Projector mounting Projector mount the RAC 104 using the optional PMK 100 pole mount kit (part #70-217-01) as follows: 1. Remove rubber feet if they were previously installed on the bottom of the RAC 104. 2. Attach the projector mounting brackets to the RAC 104 with the machine screws provided. 3. Secure the RAC 104 to a projector mount or other surface by inserting the mounting bolt through the bracket’s slotted hole, as shown below. Projector Mounting Bracket Mounting Bolt Digital Projector Mo
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LR LR LR LR Installation and Operation, cont’d Rear Panel Features and Cabling 1 INPUTS RAC 104 12 34 A B POWER IN OUT 12V A B A B 0.2A MAX 12 A 34 B Tx Rx ON +4 dBu 5 3 -10 dBV LINE LEVEL RS-232 OUTPUTS 4 2 Input connectors — Plug the audio input devices into these two 1 5-pole captive screw connectors. One stereo device or two mono devices can be connected to each captive screw connector. Wire the connectors as shown below. Tip Tip Sleeve Ring Sleeve (s) Tip Tip Sleeve Ring Unbalance
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Tx Rx RS-232 3 RS-232 connector — Plug an optional RS-232 device into this 3-pole captive screw connector. Wire the connector as shown below. Transmit (Tx) Receive (Rx) Ground (Gnd, ) Pin RS-232 function Description 1 Tx Transmit data 2 Rx Receive data 3 Gnd Signal ground Line level selector DIP switches — Set these switches to 4 -10 dBV (unbalanced, consumer line level) or +4 dBu (balanced, professional line level). There are four switches, one for each input group and output group. IN OUT
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Installation and Operation, cont’d Your RAC 104 may have shipped with a blue captive screw connector. This blue connector can be plugged into either a blue or an orange power receptacle. The ideal length of exposed (stripped) copper wire for the blue connector is 3/16" (5 mm). The blue connector does not have the extended tail or the included tie-wrap. Do not tin the power supply leads before installing in the direct insertion connector. Tinned wires are not as secure in the connectors and coul
