TW-60 PUBLIC SAFETY RADIO INTERFACE INSTRUCTION MANUAL
TW-60 Public Safety Radio Interface Manual © 2005 Vitec Group Communications All Rights Reserved Part Number 810320 Rev. 1 Vitec Group Communications, Inc. 4065 Hollis Street Emeryville, CA 94608-3505 U.S.A Clear-Com is a registered trademark of Vitec Group Communications The Clear-Com Logo is a registered trademark of Vitec Group Communications Eclipse is a registered trademark of Vitec Group Communications Windows is a registered trademark of Microsoft Corp.
CONTENTS IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . i OPERATING A TW-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front Panel Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TW-60 PUBLIC SAFETY RADIO INTERFACE
IMPORTANT SAFETY INSTRUCTIONS Please read and follow these 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.
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 14.Do not expose the apparatus to dripping or splashing and do not place objects filled with liquids, such as vases, on the apparatus. WARNING: To reduce the risk of electric shock, do not expose this apparatus to rain or moisture. 15.The appliance coupler is considered the disconnection device and should remain readily operable for disconnection of unit.
1 OPERATING A TW-60 INTRODUCTION Thank you for choosing this Clear-Com product. “Radio interoperability” allows public safety providers to talk in real time on-demand regardless of the brand, model number, or frequencies of the radio equipment used. “Radio interoperability” is the ability of public safety providers – law enforcement, firefighters, EMS, emergency management, public utilities, transportation and other personnel – to exchange voice communications on demand, in real time.
• Receive Level Adjust: Used to adjust the receive level of the base station two-way radio when there is no external volume control on the base station radio. Note: The receive level is set at the factory and should be adjusted only if the remote radio does not have its own volume adjustment. The default is 12 o'clock, (1/2 rotation). • Transmit Level Adjust: Use the TRANSMIT LEVEL ADJUST volume control to set the level of the intercom's audio as heard at the remote station radio.
• Channel 1 - 4 Radio Connectors: These four DB-9F connectors are used to connect control and audio signals to the base station two-way radios on each channel. • Channel 1 - 4 Matrix Audio Connectors: These four RJ-45 connectors are used to connect the 4-wire audio signals to the Matrix port. • Channel 1 - 4 Setup Switches: These 3 dipswitches on each channel control the audio level interface and transmitter keying protocol for each two-way radio. Refer to Table 3.
1-4 TW-60 PUBLIC SAFETY RADIO INTERFACE
2 You can wire the TW-60 to a wide variety of two-way radio audio and control connections. INSTALLING A TW-60 There are eight basic steps to installing the TW-60 Public Safety Radio Interface: 1. Wire cables for connecting the TW-60 unit to radios. 2. Install the TW-60 unit in an equipment rack. 3. Connect the the TW-60 unit to power, 4. Connect the TW-60 unit to radios. 5. Connect the TW-60 unit to a Clear-Com matrix, 6. Connect the TW-60 unit to general-purpose outputs (GPIs). 7. Adjust tranmsit levels.
commands it. The relay contacts, in conjunction with the cable wiring chosen, allow for correct transmitter keying to virtually any type of radio. In addition to the following table, refer to the Block Diagram section of this manual for a simplified diagram showing the Two-Way Radio connections to the DB-9F connectors. WIRING THE TWO-WAY RADIO CABLE To connect the base-station radio to the TW-60, you must build your own custom connector cable. This involves several steps: 1.
Transmit Key Switch: For some two-way radios, a dedicated power path may be needed to activate the Transmit function. If so, set switch 1 to ON, as shown in Table 3. SWITCH 1 SWITCH 2 SWITCH 3 FUNCTION Off Off Mic input range is + 11 dBv to - 20 dBv Off On Mic input range is - 26 dBv to - 48 dBv On On Mic input range is - 30 dBv to - 57 dBv On Provides a dedicated power path to key Transmit Off Removes power path Table 3: Setup Switch Positions RACK MOUNTING The unit requires 1.
TW-60 UNITS 730239 CABLES Channels 1 - 4 4 Channels 5 - 8 4 Channels 9 - 12 4 Channels 13 - 16 4 730240 CABLES 730241 CABLES 1 1 Table 4: Matrix Cables Required for Each TW-60 Unit The matrix audio RJ-45 jack pinout from the TW-60 to the Clear-Com matrix communications system is as follows: PIN FUNCTION 1 Not used 2 Not used 3 Audio to matrix + 4 Audio from matrix + 5 Audio from matrix - 6 Audio to matrix - 7 Not used 8 Not used Table 5: Matrix Audio RJ-45 Jack Pinout TW-60
The Matrix GPI DB-9M jack pinout from the TW-60 to the Clear-Com matrix communications system is as follows: PIN FUNCTION 1 Channel 1 matrix GPI control 2 Channel 2 matrix GPI control 3 Channel 3 matrix GPI control 4 Channel 4 matrix GPI control 5 Signal return 6 Chassis ground 7 Chassis ground 8 Chassis ground 9 Chassis ground Table 6: Matrix GPI DB-9M Jack Pinout VERIFYING OPERATION OF THE TW-60 SYSTEM After the interconnections have been made, and programmed with the Clear-Com matrix
channels. The transmit indicator on the base station radios (if any) on these channels should also illuminate. 8. Now verify that when any remote radio is keyed, the others can all hear the transmission. To avoid feedback, it is helpful to have the remote radios some distance away or in another room. The Transmit Level controls on the TW 40 adjust the volume to the remote radios.
3 TECHNICAL REFERENCE BLOCK DIAGRAM The following block diagram shows only two of the four channels.
TW-60 PUBLIC SAFETY RADIO INTERFACE 3-2
4 SPECIFICATIONS Transmit Output To radio microphone Microphone Type Frequency Response Transmit Key Transmit Audio Delay Receive Input From radio earphone: Impedance: Frequency Response Rear Panel Connectors Two-Way Radios Matrix Audio Matrix GPI Control AC Power Rear Panel Controls Power Switch Front Panel Controls Receive Level Adjust Transmit Level Adjust Transmit Delay Front Panel Indicators Receive Audio Transmit Key Transmit Audio Level Power On Power Fault Transformer isolated Carbon, dyna
Dimensions 19 inches W x 1.75 inches H x 5.25 inches D (483 mm x 44 mm x 133 mm) Weight 4.5 lbs. (2.05 kg) * 0 dBv is referenced to 0.775 volts RMS. Notice About Specifications While VGC 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.
5 WARRANTY Clear-Com guarantees this product to be free of manufacturing defects in material and workmanship under normal use for a period of two years from the date of purchase. TECHNICAL SUPPORT Clear-Com offers 24/7 customer support. Return authorization numbers are required for all returns. Both warranty and non-warranty repairs are available. To ensure complete and timely support to its customers, Clear-Com maintains Technical Service Centers (TSC) staffed by qualified technical personnel.
Replaceable Unit (LRU) that is returned to Clear-Com during the warranty period. A Line Replaceable Unit (LRU) is defined as: an assembly that can be safely removed from the system and readily replaced by plugging in a new unit. In the case of ancillary items such as power supplies, the entire power supply would be returned. Whereas, in the case of circuit cards, control panels, etc., only these assemblies would be returned for repair. All equipment provided by Clear-Com is covered under the warranty.
thereof delivered hereunder, or any other warranties or guarantees, including but not limited to any liability of Clear-Com for any consequential and/or incidental damages and/or losses (including loss of use, revenue, and/or profits). In any event, the maximum extent of Clear-Com’s liability to customer hereunder shall not under any circumstances exceed the cost of repairing or replacing any part(s) found to be defective within the warranty period as aforesaid.
WARRANTY 5-4
