CLEAR-COM ENCORE TW-12C SYSTEM INTERFACE INSTRUCTION MANUAL
TW-12C System Interface Instruction Manual © 2007 Vitec Group Communications Ltd. All rights reserved. Part Number 810507Z Rev. 1 Vitec Group Communications, LLC. 850 Marina Village Parkway Alameda, CA 94501 U.S.A Vitec Group Communications 7400 Beach Drive Cambridge Research Park Cambridgeshire United Kingdom CB25 9TP Vitec Group Communications Room 1806, Hua Bin Building No. 8 Yong An Dong Li Jian Guo Men Wai Ave Chao Yang District Beijing, P.R.
CONTENTS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 The Clear-Com Concept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Fast, Easy & Accurate Setup . . . . . . . . . . . . . . . . . . . . . . . . . .
ii TW-12C SYSTEM INTERFACE
IMPORTANT SAFETY INSTRUCTIONS 1. 2. 3. 4. 5. 6. 7. Please read and follow these instructions before operating this product. 8. 9. 10. 11. 12. 13. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol alerts you to the presence of uninsulated dangerous voltage within the product's enclosure that might be of sufficient magnitude to constitute a risk of electric shock. Do not open the product's case. This symbol informs you that important operating and maintenance instructions are included in the literature accompanying this product.
1 OPERATION INTRODUCTION Congratulations on choosing this Clear-Com product. Clear-Com was established in 1968 and remains the market leader in providing intercoms for entertainment, educational, broadcast and industrial applications. The ruggedness and high build-quality of Clear-Com products defines the industry standard. In fact, many of our original beltpacks and main stations are still in daily use around the world.
The TW-12C is designed to connect the two intercom systems in a completely transparent manner. Either “side” of the interface can connect to a Clear-Com intercom system or to an RTS intercom system, thereby providing these combinations: • Clear-Com to Clear-Com • Clear-Com to RTS • RTS to RTS The TW-12C provides a pair of 3-pin, XLR connectors (one male, one female) for each side of the interface.
CALL SIGNALLING The TW-12C interface receives Call signalling in the appropriate form (DC level for Clear-Com, 20k Hz tone for RTS), decodes it, and passes it as logic to the other side of the interface, via an optical coupler. The receiving side of the interface sends the signal appropriate for the intercom type that was selected via the front panel. DC isolation of the Call signal between the two sides is obtained through the use of the optical coupler.
1-4 System Installation Manual
1 INSTALLATION TW-12C SETUP & ADJUSTMENT SETUP Install the TW-12C in a 19-inch rack The TW-12C rear panel contains a paralleled pair of connectors (male and female) for each side of the interface. Figure 2-1: TW-12C Rear Panel Connect the two intercom systems to the rear panel connectors. Refer to Figure 2-2 below: Figure 2-2: TW-12C System Block Diagram Figure 2-3: TW-12C Front Panel 1. On the side labelled SYSTEM 1, set the “C-C/RTS Type”switch to the appropriate position (Clear-Com or RTS system).
The following chart describes the functions of the pins on the rear panel connectors: Figure 2-4: Pin Connections 4. When the TW-12C is properly connected to a powered intercom system, the LED power indicator for that side should be illuminated. Warning: Pin 1 and the connector shield of cables connected to the TW-12C SHOULD NOT be connected together.
6. Repeat steps 3, 4 and 5 until you obtain a complete null. Note: If an almost-complete null cannot be obtained, chances are something is wrong with the intercom line feeding that side: • If the “R” control is fully counter-clockwise, the line has double terminations or an excessive resistive load on it. If the “R” control is fully clockwise, then the line has no termination.
1-4 System Installation Manual
2 SPECIFICATIONS TW-12C SYSTEM INTERFACE CLEAR-COM FORMAT LINE CHARACTERISTICS Max Level Before Clipping : Impedance: SIGNALLING Receive: Send: >=3dBu >=10KΩ <=4 VDC >=11VDC RTS FORMAT LINE CHARACTERISTICS Max Level Before Clipping : Impedance: SIGNALLING TONE Send frequency: Receive frequency: Send level: Receive level: >=5dBu >=10KΩ 20kHz ±100Hz 20kHz ±500Hz >=-6dBu <=-25dBu GENERAL CHARACTERISTICS Frequency response: Party Line - Party Line Distortion Party Line - Party Line Max Gain Clea
RTS - RTS Power Requirements Input Voltage Range Input Current (average) Rear Panel Connectors Rear panel: Front Panel Connectors Headset TS1 Earphone Front Panel Controls and Indicators Power Null Test Button Gain Level Adjust Null Adjust Connection Type Switch Pin Connection Select Switch Dimensions Weight <=-4dB 20-30VDC <=50mA (2) XLR3M (1 per channel) (2) XLR3F (1 per channel) (1) XLR4M (1) 3.
LIMITED WARRANTY Vitec Group Communications (VGC) warrants that at the time of purchase, the equipment supplied complies with any specification in the order confirmation when used under normal conditions, and is free from defects in workmanship and materials during the warranty period. VGC offers 24 x 7 customer support if you have an Extended Warranty or Service Contract. Return Material Authorization (RMA) numbers are required for all returns. Both warranty and non-warranty repairs are available.
such agreement. For more information, contact your authorized dealer, distributor, or sales representative. Instructions for reaching VGC’s User Support Centers are given below. Telephone for Europe, Middle East and Africa: +49 40 6688 4040 Telephone for the Americas and Asia: +1 510 337 6600 Email: vitec.support@AVC.de Once the standard warranty period has expired, the User Support Center will continue to provide telephone support if you have purchased an Extended Warranty or Service Contract.
years the warranty of any product offered with a standard two-year warranty. The total warranty period will not extend beyond five years. Any purchase of an extended warranty provides 24 x 7 customer support in addition to the warranty immediately upon purchase of the warranty extension. Note: VGC does not offer warranty extensions on UHF wireless intercom systems, or on any product with a 1-year or 90-day warranty.
of customer furnished components resulting in damage to VGC provided product. This limited warranty is not transferable and cannot be enforced by anyone other than the original consumer purchaser. This warranty gives you specific legal rights and you may have other rights which vary from country to country.
