DTC Communications VXS250 Video Transmitter User Manual VTX 1920256
DTC Communications Inc. Video Transmitter VTX 1920256
Manual
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| Document ID | 283203 |
| Application ID | 71P+9wNZmFgXM+sfQvoigQ== |
| Document Description | Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 311.71kB (3896381 bits) |
| Date Submitted | 2002-11-12 00:00:00 |
| Date Available | 2002-10-02 00:00:00 |
| Creation Date | 2002-11-11 16:15:00 |
| Producing Software | Acrobat Distiller 5.0.5 (Windows) |
| Document Lastmod | 2002-11-11 16:15:58 |
| Document Title | VTX 1920256 |
| Document Creator | Adobe PageMaker 7.0 |
| Document Author: | donlav |
1/4 W att, Body W orn Watt, Worn Video T ransmitter Transmitter Manual VBS2-250 Frequency 2200-2300 MHz VBS-250 Frequency 2400-2500 MHz VBL-250 Frequency 1700-1850 MHz DTC COMMUNICATIONS INCORPORATED PN OP1920256 REV6 How to contact DTC Copyright Notice Warranty For operator and troubleshooting information, customers are encouraged to refer to the details in this manual. For additional clarification or instruction, or to order parts, contact DTC. Customer Service is available Monday through Friday between the hours of 9:00 AM and 5:00 PM EST at: Tel: 603-880-4411 Fax: 603-880-6965 Website: www.dtccom.com Email: info@dtccom.com Copyright © 2002 DTC Communications, Inc. All rights reserved. No part of this document may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, including but not limited to electronic, magnetic, mechanical, optical, chemical, manual or otherwise, without the prior written permission of DTC Communications, Inc. DTC warrants its manufactured components against defects in material and workmanship for a period of two (2) years, commencing on the date of original purchase. Products manufactured by others that are approved for use with DTC equipment are warranted for the manufacturer’s warranty period, commencing from the date of shipment from DTC. Disclaimer 486 Amherst Street Nashua, New Hampshire 03063 USA The information in the document is subject to change without notice. DTC makes no representations or warranties with respect to the contents hereof, and specifically disclaims any implied warranties of merchantability or fitness for a particular purpose. DTC reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of DTC to notify any person of such revision or changes. The following information is provided as a service to our law enforcement customers who require a Part 90 station license for video surveillance operations using the 2450 to 2483.5 MHz band. You will need to provide: • Form 600 (the application form) Trademarks Trademarks of DTC Communications, Inc. include: • DTC • MiniPIX® • DynaPIX® Other product names used in this manual are the properties of their respective owners. DTC COMMUNICATIONS, INC. FCC information Forms can be obtained from the FCC on their website at: www.fcc.gov You can also contact the FCC using their FAX back service at: (888) 418-3676 Additional instructions are available by telephone at: (888) 225-5322 The filing fee form is returned to: Federal Communications Commission 1270 Fairfield Road Gettysburg, PA 17325-7245 Manual Conventions NOTE Describes special issues you should be aware of while using a particular function. WARNING Calls out situations in which equipment could be damaged or a process could be incorrectly implemented, but in which operator safety is not a factor. TIP Describes application hints. RF EXPOSURE STATEMENT TABLE OF CONTENTS Quick Start ........................................................................... 4 Overview .............................................................................. 5 Features ............................................................................... 6 Specifications ....................................................................... 7 Battery Drain ........................................................................ 9 Connectors ......................................................................... 10 Connections ........................................................................ 11 Equipment Configurations ................................................. 13 Optional Accessories ........................................................ 14 Programming ..................................................................... 22 Appendix A ......................................................................... 26 When used as directed, the maximum SAR of this device is 2.7 W/kg, which meets the limits set forth by the FCC. Refer to Appendix A in this manual for instruction in the proper use of antennas with this device. FCC ID# H25VXS250 DTC COMMUNICATIONS, INC. QUICK START GUIDE Make sure that the ON/OFF switch is set to OFF. (Red dot is OFF). Install 4 “AA” batteries in the internal battery compartment of the module. (Lithium batteries are recommended) Using a screwdriver, turn the channel selector to the correct transmission channel number. Connect an antenna to the ANTENNA connector on the module. Connect the microphone or microphones to the MIC-1 and MIC-2 connectors on the module. Connect a video source to the Video/Multi I/O connector. Slide the power switch to the ON position (Green dot is ON) to apply power to the transmitter. Note: While installing the batteries, observe proper polarity as printed in the battery compartment. Reverse polarity protection is a built-in design feature of the transmitter. If a battery is installed backwards, this feature prevents the transmitter from powering up, without damaging the transmitter or battery. Warning: Do not apply power to the transmitter until an antenna has been connected in step 4. DTC COMMUNICATIONS, INC. Warning: Refer to Appendix A of this manual for information on the proper use of antennas. OVERVIEW What should you expect to receive with your 250mW Transmitter? 1 VBS/VBL Video Transmitter 1 Dipole antenna with right angle SMA connector 1 One Video and Power In “Y” cable 1 DTC programming software package 1 DTC programming cable 8 Batteries NOTE: The dipole antenna included is not recommended for normal use! This antenna enables you to quickly set up your transmitter and ensure proper operation. DTC highly recommends the use of circularly polarized antennas for the best rejection of multi-path. NOTE: DTC has provided you with a “Y” cable (power and video) terminated with an RCA connector and a BNC adapter for your convenience.) The VBL/VBS series video transmitters from DTC represent the first true “video body wires” available. DTC has developed a fully user programmable video transmitter and mated it with an integral AA battery pack. This dramatically simplifies wiring, lowers the risk of detection, and increases the chances of operational success. For best results, DTC recommends the use of its VidiWIRE on body dual patch antenna system with phase matching module, and a DTC diversity receiver. Users should also consider using the VBL/VBS series transmitters for rapid deployment drop cameras. Packaging the transmitters with miniature board cameras is exceptionally easy, and in the case of 5 volt cameras, power may be provided to the camera directly from the VBL/VBS transmitter’s internal battery pack. This product in only available for sale to legitimate state, local, federal and friendly foreign government agencies. DTC COMMUNICATIONS, INC. FEATURES Feature Remote Switching Capability External Power Loop Through Description • You may turn the device ON remotely, by attaching a switch to one of the pins on the Multi I/O connector. DTC provides hard-wired and wireless switches for this application. • The power applied to the Multi I/O pin is automatically looped through the unit, and available on a second pin to power a remote device, such as a camera. If you apply 9 Volts in, you will get 9 Volts out. Applying power through the multi I/O connector automatically disables the internal AA battery pack. WARNING: Make sure your camera will operate on the voltage being supplied to the transmitter. Programmable Audio Efficient Switching Power Supply Camera Power Available through Multi I/O Connector DTC COMMUNICATIONS, INC. User programmable video channels, selectable in 250 kHz steps. Two user programmable audio sub carriers, selectable in 10 kHz steps from 6 MHz to 7.5 MHz. • Audio sub carriers are OFF unless microphones are attached. The transmitter automatically senses when a microphone has been attached. • The audio sub carriers are phase locked, and will not drift into the video signal. • Automatic Gain Control is provided on each audio input, amplifying soft sounds. • They generate far less heat than a traditional video transmitters. • They operate significantly longer than traditional video transmitters on the same power source. • When powering the device using the internal battery pack, regulated 5 VDC is available on the multi I/O connector, limited to 200 mA current drain. Specifications for the body worn VBS/VBL-250 Power Supply Power Consumption Battery life Reverse polarity protection Dimensions Camera Power Controls Connectors Programmability Chassis notes General Number of sub-carriers Sub-carriers frequencies Internal batteries 4 “AA” batteries or external 9-16 VDC. 2.5 Watts (not including camera) 3 hours - Alkaline AA Yes 2.5 x 4.5 x 0.675” Using external power input: Same as supply voltage, switched (200 mA max) Using internal batteries: 5 VDC @ 175 mA, switched (internal regulator) 10 channel select rotary switch Panel mounted, slide ON/OFF switch 2 pin Lemo: Mic 1 2 pin Lemo: Mic 2 SMA: Antenna 6 pin Multi I/O: Video in, Data in, DC input 9 -16 VDC, camera power, Remote ON/OFF, Multiplexed Data out, Ground Video: 2400 - 2500 MHz (VBS-250) 1700 - 1850 MHz (VBL-250) 250 KHz resolution steps Audio: User programmable from 6.0 - 7.5 MHz, in 10 kHz steps Machined solid aluminum with rounded edges. Audio Mic level input (line level factory opt.) 50 - 3000 Hz Phased locked with AGC on both inputs. Sub-carrier auto sensing, only active when microphone is attached. 6.0 - 7.5 MHz , user programmable SPECIFICATIONS FRONT PATCH ANTENNA BACK PATCH ANTENNA MICROPHONES CAMERA SPLITTER TRANSMITTER Four lithium “AA” batteries DTC COMMUNICATIONS, INC. SPECIFICATIONS Sub-carrier ON/OFF control Subcarrier frequency stability Sub-Carrier Deviation Audio S/N Frequency Response Total Harmonic Distortion Input Level Pre-Emphasis Input Impedance Subcarriers are activated when mic is connected. +/- 0.003%, -30°C to +70°C 50 kHz peak 45 dB min. BW1.5dB = 50 - 3000 Hz <2% 8 mVpp @ 400 Hz for 50 kHz peak dev. 75 uS 10 k Ohm Video Video Frequency Response Input Impedance Input Level S/N Pre-Emphasis Differential Gain Operating Frequency Power output DTC COMMUNICATIONS, INC. BW1.5dB = 6 Hz - 5.0 MHz 75 Ohms 1Vp-p Max. 60 dB min. Per CCIR 405 525 line curve 5% RF 1700 - 1850 MHz, 250 KHz resolution steps 2400 - 2500 MHz, 250 KHz resolution steps 250 mW min. @ nominal supply voltage, 25 Deg. C. -3 dB @ 3.6 VDC int -2 dB over temp. Output Impedance Spurs and Harmonics output 50 Ohms Load Pull Stability 8:1 VSWR -50 dBc Frequency Stability Modulation Sensitivity Modulation Sensitivity Variation Peak Carrier Deviation Number of channels Sub-carrier sideband level Environmental Temperature Range Humidity SPECIFICATIONS +/- 0.003%, -30°C to +50°C 8 MHz/V nom. Four lithium batteries +/- 5% across the band 4 MHz nom. 10 max. (user programmable) -28 dBc, +/- 2 dB -30°C - +70°C 90% (non-condensing) Transmitter & Camera Battery Type 9 AA Alkaline Pack (External) 9 AA Lithium (External) 9 AA NiMH Rechargeable (External) 4 AA (Internal) 4 AA Lithium (Internal Part Number 4045131 Transmitter Only 6 hours Camera 9V@153mA 3.3 hours Camera 12V@120mA 3.6 hours 4045132 9 hours 5 hours 5.5 hours 4045130 7 hours 4 hours 4.3 hours DTC COMMUNICATIONS, INC. CONNECTORS MATING CONNECTORS Lemo Male Part # (FFS.01.250.DLAE31) DTC Male Part # (8570003) Hirose Part # HR10A-7P-6P (02) DTC Part # 954020 Standard Male SMA connector Microphone Connectors 10 DTC COMMUNICATIONS, INC. MICROPHONE CONNECTORS Two connectors accommodate two microphone inputs. Each connector has two contacts and provides power to the microphone as well as connecting the audio signal into the transmitter. The audio sub-carriers are activated by the presence of the microphone. If a microphone is removed, that sub-carrier is removed from the transmit signal. Turning off the unused sub-carrier saves power and improves picture quality. ANTENNAS A standard SMA connector is used as the antenna connector on both the VBS/VBL250. Refer to a list of DTC antennas available beginning on page 18. TIP: You may use the VBS/VBL series transmitters with other manufacturers antennas. Verify that they are suited for the band you are operating in. CONNECTIONS Antenna Connector WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. CHASSIS MOUNTED POWER ON/OFF SWITCH A slide switch is provided for local control of power ON and OFF. Green dot is ON, Red dot is OFF. NOTE: REMOTE ON overrides the chassis mounted OFF switch. (i.e. When the chassis mounted power switch is set to OFF, REMOTE ON can be used to turn the transmitter ON.) Channel Select On/OFF Switch CHANNEL SELECT SWITCH Select a transmission channel by using the rotary switch located on the front surface of the transmitter. Use a screwdriver to rotate the switch to the desired channel number. MULTI I/O CONNECTOR The multi I/O (6-pin Multi I/O) connector is mainly used as the video and external Multi I/O Connector power input connector. It also provides access to many transmitter functions, such as: • Programming the device • Video in Pin 6: Video in • Power in Pin 1: Ground • Remote on Pin 5: RS-232 in Pin 2: Ext power • Camera power input 9-16VDC NOTE: Same as supply voltage. Do not exceed 200mA. Pin 4: Remote on, Pin 3: Camera switched to ground Power Output DTC COMMUNICATIONS, INC. 11 EXTERNAL CAMERA POWER FRONT PATCH ANTENNA BACK PATCH ANTENNA The basic VBS/VBL-250 configuration consists of the video transmitter, Vidi-Wire Antenna, and DTC cable part number 4045170-024. This cable is connected to the multi I/O port of the transmitter, and is configured to supply: • • CAMERA The video signal from the camera to the transmitter. Power to the transmitter through the internal battery pack. SPLITTER MICROPHONE MICROPHONE TRANSMITTER 12 DTC COMMUNICATIONS, INC. NOTE: You will need external camera power if voltage to the transmitter is not compatible with your camera’s operating voltage, and/or you need greater battery life, and/or your camera draws more than 200mA. The basic VBS/VBL-250 configuration consists of the video transmitter, Vidi-Wire Antenna, and DTC cable part number 4045194-024. This cable is connected to the multi I/O port of the transmitter, and is configured to supply: • • The video signal from the camera to the transmitter. Power to the transmitter and camera through the internal battery pack. TRANSMITTER AND CAMERA (INT) FRONT PATCH ANTENNA BACK PATCH ANTENNA MICROPHONES CAMERA SPLITTER TRANSMITTER DTC COMMUNICATIONS, INC. 13 EXTERNAL TRANSMITTER POWER CAMERA STRIPPED AND TINNED LEADS STANDARD POWER SOURCE for transmitter only, 9-16 V. ANTENNA OPTIONAL BATTERY PACKS TRANSMITTER 14 DTC COMMUNICATIONS, INC. The VMS/VML-250 configuration, which uses the loop through power source for the camera, consists of the video transmitter and DTC cable part number 4045189-024 . This cable is connected to the multi I/O port of the transmitter. It is configured to supply: • The video signal to the transmitter from the camera. • Power to the transmitter through a molex connector that can be easily connected to DTC’s battery packs. • Power to the camera through a molex connector that can easily be connected to DTC’s optional cameras. 4045131 (AA non-rechargeable) 4045177( D-Cell battery pack) Alkaline 4045130 (AA rechargeable) MiMH ADDING REMOTE ON FUNCTION TO BASIC This configuration consists of the video transmitter, Vidi-Wire antenna, and DTC cable part number 4045192-024. This cable is connected to the multi/ IO port of the transmitter, and is configured to supply: • The video signal from the camera to the transmitter. • Power to the transmitter and camera through the internal battery pack. • Remote on function through a hard wired switch or remote Key FOB transmitter. This remote on function overrides the OFF switch located on the transmitter chassis. NOTE: You will need external camera power if voltage to the transmitter is not compatible with camera’s operating voltage, and/or you need greater battery life, and/or your camera draws more than 200mA. FRONT PATCH ANTENNA BACK PATCH ANTENNA MICROPHONES CAMERA SPLITTER HARD WIRED SWITCH STRIPPED AND TINNED LEADS STANDARD KEY FOB SWITCH RECEIVER TRANSMITTER KEY FOB SWITCH TRANSMITTER DTC COMMUNICATIONS, INC. 15 ACCESSORIES Part Number Description 1088185 Vidi Vest™ The VidiVest™ is designed to be used in conjunction with DTC’s body worn video transmitter. The vest supplies compartments for the video transmitter, associated wiring, antenna system (i.e. VidiWire™), microphones, and a button camera. The garment is ventilated for comfort and can be adjusted with velcro straps at the waist and shoulders. The vest is intended to be worn as an undergarment with a loose fitting shirt or other garment over the vest. 4045181 Camera with 3-pin connector Assembly This camera is a high-resolution color CCD type, which has been modified to look like a shirt button. This allows for easy concealment through a regular button hole. 4045192-024 VidiVest cable harness This cable harness connects all of the components, such as, the transmitter, battery packs, microphones, and VidiWire antenna system. 16 DTC COMMUNICATIONS, INC. Part Number Description VW-ANT-2-SMA VW-ANT-1-SMA VidiWire antenna system 2.4-2.5 GHz VidiWire antenna system 1.7-1.9 GHz COMPONENTS The VidiWire™ antenna system was specifically designed for video transmission from on-body transmitters. This DTC Proprietary system provides the best possible omnidirectional video transmission from a body-worn system. The system is composed of three parts: two special patch-type antennas, and a phasing module. WARNING: VidiWire Antennas are housed in a milled aluminum cover which shields the wearer from RF energy. Make sure the antennas radiating side is directed away from the body. WARNING: Do not use the VidiWire antenna system on the body with any transmitter outputting more than 250mW of RF energy. WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. Specifications Type DTC proprietary VidiWire™ design Polarization Dual Polarized Peak Gain Pseudo-Isotropic Horizontal Beamwidth Omnidirectional Vertical Beamwidth Omnidirectional Nominal Impedance 50 Ohms Groundplane Requirements Not applicable Size Antennas: 2.0” W x 2.0” H x 0.25” D (51 mm x 51 mm x 6.35 mm) Phasing Unit 2.0” W x 1.5” H x 0.25” D (51mm x 38mm x 6.35mm) Net Weight 6oz VW-ANT-2-SMA 2.4 to 2.5 GHz SMA male connector VW-ANT-2-TNC 2.4 to 2.5 GHz TNC male connector VW-ANT-1-SMA 1.7 to 1.9 GHz SMA male connector DTC COMMUNICATIONS, INC. 17 ACCESSORIES Part Number Description 4045170-024 Video In, 24”standard. Video In: Multi I/O to RCA(M) with BNC adaptor. (YELLOW) 4045193-024 Video In/Remote On, 24”standard. Video In: Multi I/O to RCA(M) with BNC adaptor. (YELLOW) Remote On: 24 AWG wire with a molex connector and stripped and tinned leads. (GREEN) 4045189-024 Video In/EXT Power/Camera Power cable, 24”standard. Video In: Multi I/O to RCA(M) with BNC adaptor. (YELLOW) Ext. Power: 24 AWG wire with a molex connector and stripped and tinned leads. (RED) Camera Power:24 AWG wire with a molex connector and stripped and tinned leads.(GRAY) 18 DTC COMMUNICATIONS, INC. Part Number Description 4045194-024 Video In/Camera Power, 24”standard. Video In: Multi I/O to RCA(M) with BNC adaptor. (YELLOW) Camera Power: 24 AWG wire with a molex connector and stripped and tinned leads. (GRAY) 4045192-024 Video In/Camera Power/Remote On, 24”standard. Video In: Multi I/O to RCA(M) with BNC adaptor. (YELLOW) Camera Power: 24 AWG wire with a molex connector and stripped and tinned leads.(GRAY) Remote On: 24 AWG wire with a molex connector and stripped and tinned leads. (GREEN) ACCESSORIES DTC COMMUNICATIONS, INC. 19 ANTENNAS Part Number Description VDAR-1 Single 5 dBic “Hybrid-Patch”™ Antenna with mounting options. Connector: TNC Female on chassis The VDAR video antennas are designed to operate with traditional single video receivers and multiple antenna configurations for diversity receivers. The antenna uses the DTC Hybrid-Patch system to ensure high purity circular polarization. This ensures the highest possible performance in video reception, especially in diversity systems. It is available in three different bands. Reversible and adjustable suction cup mounts come standard for quick and easy installation on the inside or outside of window or other hard, smooth surfaces. Specifications Type Three Hybrid Patch™ elements Polarization RHCP Peak Gain 5dBic Horizontal Beamwidth 90° Vertical Beamwidth 90° Nominal Impedance 50 Ohms Groundplane Req. Built-in Size 6.6” H x 6.6” W Weight 12 Oz. (34g) VDAR-1 (167mm x 167 mm) DTC Part Number Frequency Range 7011156-1 1700 to 1850 MHz 7011156-3 1990 to 2110 MHz 7011156-2 2400 to 2500 MHz 20 DTC COMMUNICATIONS, INC. WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. Part Number Description QHA-4 Quadrifilar Helix Antenna with Ring-Hybrid feed Connector: TNC Female Must be used with SMA to TNC antenna cable (4045174-006). The QHA family of antennas was developed to provide a compact solution for pattern-tailored circularly polarized antennas. This rugged antenna is omnidirectional when the antenna is vertical. The pattern is slightly elevated to allow overhead coverage. The base of the antenna includes a special flat with #10-32 threaded hole, 0.25-in. deep for mounting. It is available in both RHCP and LHCP versions. QHA-4 ANTENNAS Specifications Type Quadrifilar Helix with Ring-hybrid feed Polarization Circular Peak Gain 4dBiC at 24° above Horizontal Beamwidth Omnidirectional horizon Vertical Beamwidth 46° Nominal Impedance 50 Ohms Groundplane req. Not Required Size 8.0” L x 1.25” dia (203 mm x 32 mm dia) Weight 3.7 oz. (105 g) DTC Part Number Frequency Range QHA-4-2-R 2.4 to 2.5 GHz, RHCP QHA-4-2-L 2.4 to 2.5 GHz, Lhcp WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. DTC COMMUNICATIONS, INC. 21 ANTENNAS Part Number Description ANT-5-PIG 5 dBi Patch Antenna Connector: SMA or TNC Male on 18" coax. “pigtail”. DTC has developed a series of circularly polarized patch antennas for use in the 2.0 to 2.5 GHz indoor and short term outdoor installations. The ANT-5-P is a 5dbi gain, 90 degree wide beamwidth, antenna, mounted on a 0.125 in. thick aluminum plate. Typical uses include disguised transmitters and vehicular-mounted transmitter antennas and in a variety of receive applications. Specifications Type Patch antenna with integral ring hybrid Polarization RHCP Peak Gain 5dBic Horizontal Beamwidth 90° Vertical Beamwidth 90° Nominal Impedance 50 Ohms Groundplane Req. Built-in Size 4.0” W x 4.0” H X 0.625” D Ant-5P (102mm x 102mm x 16mm) Weight 6.4 Oz. (180 g) DTC Part Number Frequency Range ANT-5-P-SMA 2.0 to 2.5 Ghz with SMA ANT-5-P-TNC 2.0 to 2.5 Ghz with TNC male connector with male connector 22 WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. DTC COMMUNICATIONS, INC. Part Number Description ANT-10 9dBic Wideband Panel Connector: TNC Female DTC has developed a series of circularly polarized panel antennas for use in wideband transmit and receive applications from 1.7 to 2.7 GHz. The ANT-10-R is a very wide bandwidth, unidirectional log-spiral array. This antenna has useful gain, with some sidelobe variation, to 4 GHz. It can be mounted to a wall or swivel mounted with the MAF-1 grip on two surfaces, via two pairs of “1/4-20” tapped holes located in the rear center and the bottom center of the aluminum housing. The front of the antenna is a radome made of a polycarbonate material. The antenna is suitable for indoor and short-term outdoor use. It must be protected for extended outdoor use and installations since it is not water- Ant-10 WARNING: Refer to Appendix A of this manual for information on the proper use of antennas. ANTENNAS Specifications Type Log-spiral slot array, absorber loaded Polarization RHCP Peak Gain 9dBic Horizontal Beamwidth 30°at 2.0 GHz Vertical Beamwidth 30°at 2.0 GHz Nominal Impedance 50 Ohms Groundplane Req. Size Not required 9” W x 9” H x 1.2” D (227mm x 227 mm x 30 mm) Weight 1.7 lb. (750g) DTC Part Number Frequency Range 4044411 1.7 to 2.7 GHz; RHCP 7011142 1.7 to 2.7 GHz; RHCP with MAF - 1 grip included DTC COMMUNICATIONS, INC. 23 PROGRAMMING Introduction DTC has built in a lot of flexibility in the programming options you have on the VBL and VBS series transmitters. You can choose to use some, all or none of this flexibility. When you order a VBL or VBS transmitter, DTC will factory program your frequencies at no additional charge to you. You may want to place a sticker over the rotary switch on the chassis, so users in the field don’t attempt to change frequencies. This is often the best path for state and local agencies with limited frequencies available to them. DTC will also provide you with free software and a free programming cable, enabling you to change your video frequencies and their associated audio subcarriers. This is ideal if you often work with other agencies, or anticipate the equipment being used by a multi-jurisdictional task force. You can program up to ten channel settings per unit. In general, this allows you to program most variations you might encounter in the field at the depot level. As a practical matter, your VBL or VBS transmitter’s video frequencies and audio sub-carriers will be dictated by the frequency and sub-carriers(s) of your receiver and/or repeater. In many cases, these devices are crystal controlled or have few channel options. TIP: Make sure that you program your transmitter to match the frequencies and audio sub-carriers or your receiver, and test the components as a system prior to going into the field! 24 DTC COMMUNICATIONS, INC. Installing DTC Universal Programming Software on your PC PROGRAMMING NOTE: Uninstall any previous versions by going to Add/Remove Programs, clicking on DTC Universal Programming, and clicking on uninstall. Click on Start, click on run. Click on the Browse button. Click on or find your CD drive. Install the JAVA Runtime Environment Application first (CD provided). Follow the install wizard screens. Install the Universal Programming software next (floppy provided). Click on Start, click on run. Click on the Browse Button. Click on your floppy drive. 10 Double click on the setup. 11 Follow the install wizard screens. Your programming software is installed. DTC COMMUNICATIONS, INC. 25 PROGRAMMING SERIAL PORT OF COMPUTER COM1 OR COM2 Make sure the video transmitter ON/OFFswitch is set to OFF. The red dot is OFF. Make sure the transmitter has an antenna installed into the antenna connector prior to programming. Install the programming cable into the Multi I/O connector on the transmitter. Plug the serial cable of the programming cable into the COM1 or COM2 port of your computer. Turn the transmitter switch to ON. The green dot is ON. Select Start, programs, DTC communications on your computer. The system allows you to select device COM1 or COM2, depending on which serial port you are connected to. Follow the instructions on the DTC Universal Programming screens to begin the download process. 26 DTC COMMUNICATIONS, INC. PROGRAMMING 10 11 12 Click on the “Tx Channel” tab in the programmer screen. Select a channel and click on the Edit Channel button to change settings. Enter your new frequency and settings. To change any of the MIC-2 or MIC-1 settings, click on the settings provided, then click OK. 13 Click on the Upload button to upload your new settings to the transmitter. 13 10 Your new settings have been installed. 11 12 DTC COMMUNICATIONS, INC. 27 APPENDIX A Using Antennas with the VBS/VBL-250 Video Transmitter Bodyworn applications: When the VBS/VBL-250 video transmitter is to be worn on the body, only the DTC VidiWire antenna system should be used. This antenna has been extensively tested and found to be safe when used as directed. The antennas used in the VidiWire system are clearly labeled as to which side of the antenna should be placed against the body. These directions must be observed to insure safe and effective operation. Non-portable applications: In fixed location applications any suitable antenna may be used. However, to insure safe operation, it is imperative that proper spacing be maintained between the radiating surface of the antenna and any persons body. The required spacing depends on the RF output power of the transmitter and the gain of the antenna being used. The chart below shows the correct minimum spacing for antennas used with the VBS/VBL-250 transmitters. If the gain of the antenna is unknown, contact the manufacturer of the antenna for this information. To insure that proper spacing is maintained, locate the transmitter or arrange physical barriers in such away that people are prevented from approaching too closely. 28 DTC COMMUNICATIONS, INC. APPENDIX A Using Antennas with the VBS/VBL-250 Video Transmitter Minimum Allowable Spacing Between the Antenna and the Human Body (VBS/VBL-250 Video Transmitter) 40 35 Minimum Spacing (inches) 30 25 20 15 10 10 15 20 25 Antenna Gain (dB) DTC COMMUNICATIONS, INC. 29 486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411 www.dtccom.com
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