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Summary of Contents for Clear-Com Encore TW-47
- Page 1 CLEAR-COM ENCORE TW-47 TWO-WAY RADIO INTERFACE I N S T R U C T I O N M A N U A L...
- Page 2 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. China 100022 ® Clear-Com,CellCom/FreeSpeak and the Clear-Com Communication Systems logo are registered trademarks of The Vitec Group plc.
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Page 3: Table Of Contents
CONTENTS OPERATION ......1-1 Introduction ....... 1-1 Before you Begin . - Page 4 TW-47 Technical Specifications....3-1 Radio to Party Line ......3-1 Party Line to Radio .
- Page 5 IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
- Page 6 Please familiarize yourself with the safety symbols in Figure 1. When you see these symbols on this product, they warn you of the potential danger of electric shock if the station is used improperly. They also refer you to important operating and maintenance instructions in the manual.
- Page 7 EMC AND SAFETY The TW-47 Two-Way Radio Interface meets all relevant CE and FCC specifications set out below: EN55103-1 Electromagnetic compatibility. Product family standard for audio, video, audio-visual, and entertainment lighting control apparatus for professional use. Part 1: Emissions. EN55103-2 Electromagnetic compatibility. Product family standard for audio, video, audio-visual, and entertainment lighting control apparatus for professional use.
- Page 8 T W - 4 7 T W O - W A Y R A D I O I N T E R F A C E...
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Page 9: Operation
BEFORE YOU BEGIN To get the most out of your Clear-Com equipment, read this manual carefully. It will answer many questions you may have about operating and servicing your equipment. You may also call Clear-Com’s customer service department at (510) 337-6600 for... -
Page 10: Description Of The Tw-47
Pin 2 - Power/TW Channel A Pin 3 - Intercom audio/TW Channel B This is the standard wiring for a Clear-Com intercom system. With a different setting of the internal switches, the TW-47 will also accommodate RTS® and compatible systems. -
Page 11: Rf Interference
A relay provides the required “push-to-talk” transmitter “keying” of the radio. This relay is activated when the “call signal” on the Clear-Com intercom channel is detected. The relay contacts, in conjunction with the custom-made cable, allow for correct transmitter keying to virtually any type of radio. -
Page 12: Building Your Custom Cable
Figure 1-2: Connecting the TW-47 to a Base Station Radio BUILDING YOUR CUSTOM CABLE To connect the base-station radio to the TW-47, you must build your own custom connector cable. This involves several steps. 1. Obtain or make a cable using mini or micro plugs that fit your radio. - Page 13 3. The most difficult setting is getting your particular radio to key properly. Every radio has a different method of externally keying its transmitter. To determine how to set the jumpers and wire the connector, you need to know what type of external microphone is used in your radio, or you need to experiment.
- Page 14 Example 2: Relay in series with the microphone Shield From walkie-talkie earphone To walkie-talkie microphone input Shield Jumper settings J6 On (DC path for mic) J7 Off J8 On (Medium gain mic input) Figure 1-4: Relay in series with the microphone Example 1: Relay across the sleeves of the microphone and earphone connectors Shield...
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Page 15: Option Settings
The switch handles are easily accessible. The settings are as follows: • When the Intercom Compatibility Switch is set to Clear-Com (C-C), intercom audio is on pin 3 of the XLR connector. The DC level call signal is sensed on this pin. In this position, the TW intercom channel switch setting has no effect. -
Page 16: Output Level Jumpers
20 KHz Call Signal Adjustment Jumper J8 Jumper J7 Jumper J6 Intercom TW Intercom Compatibility Channel Switch (S2) Switch (S1) Figure 1-6: Location of Switches and Jumpers on Printed Circuit Board A jumper is set to ON when the left hand two pins are joined (the default position for J6). -
Page 17: Transmit Key Jumper
TRANSMIT KEY JUMPER For some walkie-talkies or two-way radios, a dedicated power path may be needed to activate their transmit function. If so, set jumper J6 to ON. CALL SIGNAL FREQUENCY ADJUST The 20 KHz call signal detector is calibrated at the factory and should not require further adjustment. - Page 18 “push-to-talk.” You must release the call button to receive communications from the remote walkie- talkies. 5. Certain Clear-Com stations can be set up so that the call signalling can be activated automatically when the “talk” button is pressed (“call-on-talk”). If this feature is available on your model of intercom station, set it, but make sure that the latching feature of the “talk”...
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Page 19: Front Panel Controls And Lights
TW-47 FRONT PANEL CONTROLS AND LIGHTS Level Adjust Transmit Audio Level Over Norm TW-47 2-Way Radio Receive Transmit Interface Figure 1-7: Front View of TW-47 1. RECEIVE LEVEL ADJUST. Use to adjust the receive level of the base station two-way radio when there is no external volume control on the base station radio. -
Page 20: Rear Panel Of Tw-47
5. INTERCOM LINE CONNECTOR. Use the three-pin female XLR connector on the TW-47’s back panel to connect the unit to the intercom channel. As with other Clear-Com remote stations, power is provided through the cable. 6. TWO-WAY RADIO CONNECTOR. Use the DB-9F connector to connect the TW-47 to the base-station radio. -
Page 21: Installation
2 INSTALLATION WIRING CABLES FOR SPECIFIC RADIO TYPES Use the following information to wire cables and set jumpers for specific radios. FOR MOTOROLA: RADIUS, GP300, SP-50, AND SPORT 7X Set jumpers to the following positions: J6, off; J7, on; J8, on. Use the example in Figure 2-1 on page 2-1. -
Page 22: For Uniden: Model Sph; Motorola: Radius
Set jumpers to the following positions: J6, on; J7. off; J8, on. To get a molded connector, order YAESU Part# MH-32 A2B speaker microphone. Shield Earphone Microphone Shield Note: Set J7 and J8 according to transmit gain requirements. Figure 2-2: Yaesu Radios FOR UNIDEN: MODEL SPH;... -
Page 23: Specifications
3 SPECIFICATIONS TW-47 TECHNICAL SPECIFICATIONS dBu is an absolute measurement. 0 dBu is referenced to 0.775 volts RMS RADIO TO PARTY LINE LINE CHARACTERISTICS Frequency Response 200-20KHz ± 3dB Max Gain >=-5dBu Distortion <=0.3% Noise <=-70dBu Max Level Before Clipping >=+17dBu Green LED Threshold -22dBu ±... - Page 24 Weight 1 lb. 4 oz. (0.6 kg) Notice About Specifications While Clear-Com makes every attempt to maintain the accuracy of the information contained in its product manuals, that information is subject to change without notice. Performance specifications included in this manual are design-center specifications and are included for customer guidance and to facilitate system installation.
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Page 25: Limited Warranty
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. During the warranty period VGC, or any service company authorized by VGC, will in a commercially reasonable time remedy defects in materials, design, and workmanship free... -
Page 26: Technical Support
• UHF wireless intercom systems have a limited warranty of three years. • All other Clear-Com and Drake brand systems and products, including beltpacks, have a limited warranty of two years. The warranty starts at the time of the product’s original purchase. -
Page 27: Warranty Repairs And Returns
WARRANTY REPAIRS AND RETURNS Before returning equipment for repair, contact a User Support Center to obtain a Return Material Authorization (RMA). VGC representatives will give you instructions and addresses for returning your equipment. You must ship the equipment at your expense, and the support center will return the equipment at VGC’s expense. -
Page 28: Non-Warranty Repairs And Returns
NON-WARRANTY REPAIRS AND RETURNS For items not under warranty, you must obtain an RMA by contacting the User Support Center. VGC representatives will give you instructions and addresses for returning your equipment. You must pay all charges to have the equipment shipped to the support center and returned to you, in addition to the costs of the repair. -
Page 29: Liability
LIABILITY THE FOREGOING WARRANTY IS VGC'S SOLE AND EXCLUSIVE WARRANTY. THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY OTHER REQUIRED IMPLIED WARRANTY SHALL EXPIRE AT THE END OF THE WARRANTY PERIOD. THERE ARE NO OTHER WARRANTIES (INCLUDING WITHOUT LIMITATION WARRANTIES FOR CONSUMABLES AND OTHER SUPPLIES) OF ANY NATURE WHATSOEVER,... - Page 30 This warranty does not cover any damage to a product resulting from cause other than part defect and malfunction. The VGC warranty does not cover any defect, malfunction, or failure caused beyond the control of VGC, including unreasonable or negligent operation, abuse, accident, failure to follow instructions in the manual, defective or improperly associated equipment, attempts at modification and repair not approved by VGC, and...
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