/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.
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 .........................................................................
QUICK START GUIDE 4 1 2 5 6 7 1 3 4 5 3 6 7 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
EXTERNAL TRANSMITTER POWER CAMERA STRIPPED AND TINNED LEADS STANDARD C POWER SOURCE for transmitter only, 9-16 V. ANTENNA B OPTIONAL BATTERY PACKS A 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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. 1 Click on Start, click on run. 2 Click on the Browse button. 3 Click on or find your CD drive. 4 Install the JAVA Runtime Environment Application first (CD provided). 5 Follow the install wizard screens. 6 Install the Universal Programming software next (floppy provided).
PROGRAMMING SERIAL PORT OF COMPUTER COM1 OR COM2 1 2 4 3 4 5 6 3 2 7 8 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.
PROGRAMMING 9 9 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 5 DTC COMMUNICATIONS, INC.
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.
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 5 0 0 5 10 15 20 25 Antenna Gain (dB) DTC COMMUNICATIONS, INC.
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411 www.dtccom.
