/4 Watt Video Transmitter Operator Guide VBS-250 Frequency 2400-2500MHz VBL-250 Frequency 1700-1850MHz DTC COMMUNICATIONS INCORPORATED
How to contact DTC 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.
Manual Conventions Table of Contents 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 In bodyworn deployments, when installed as directed, this equipment complies with the FCC radiation exposure limits set forth for an Occupational/Controlled environment.
QUICK START GUIDE 4 6 VBS/VBL-250 Video Transmitter 1 2 5 7 1 3 3 4 5 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) Note: The module is power efficient, enabling 3 hours of operation. Using a screwdriver, turn the channel selector to the correct transmission channel number. Connect an antenna to the ANTENNA connector on the module.
VBS/VBL-250 Video Transmitter OVERVIEW What should you expect to receive with your 250mW Transmitter? NOTE: The dipole antenna included is not recommended for normal use! This antenna enables you to quickly set up your transmitter and 1 VBS/VBL Video Transmitter ensure proper operation. DTC highly recommends the use of 1 Dipole antenna with right angle SMA connector circularly polarized antennas for the best rejection of multi-path.
FEATURES Feature Description Remote Switching Capability • You may turn the device ON or OFF, 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. External Power Loop Through • 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 Module (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 SPECIFICATIONS Internal batteries 4 “AA”lithium batteries or external 9-16Vdc. 2.5 Watts (not including camera) 3 hours yes 2.5x4.5x0.
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 to +70°C 50kHz peak 45dB min. BW1.5dB = 50-3000Hz <2% 8 mVpp@400Hz 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 to +50°C 8MHz/V nom. +/- 5% across the band 4 MHz nom. 10 max. (user programmable) -28dBc, +/- 2dB -30 - +70°C 90% (non-condensing) Battery Drain Battery Type With Camera Without Camera lithium 3 Hours Min. 5 Hours Min. Alkaline Not Recommended 3 Hours Min. DTC COMMUNICATIONS, INC.
CONNECTIONS Channel Select 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. 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 10 DTC COMMUNICATIONS, INC.
ANTENNAS A standard SMA connector is used as the antenna connector on both the VBS/ VBL-250. Refer to a list of DTC antennas available on page 21. 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 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.
CONNECTIONS Multi I/O Connector MULTI I/O CONNECTOR The multi I/O (6-pin Multi I/O) connector is mainly used as the video and external power input connector.
Video In, External DC for Transmitter, External DC for Camera and optional Remote On USING A SEPARATE CAMERA POWER SOURCE 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. This equipment configuration shows the video signal coming in, and an external DC Power source for the transmitter only at 9-16V.
USING LOOP THROUGH, SINGLE POWER SOURCE, FOR TRANSMITTER AND CAMERA Video In, External DC, Camera Power, and optional Remote On 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. This equipment configuration shows the video signal coming in, and an external DC Power source for the transmitter and camera at 9-16V.
USING LOOP THROUGH, BATTERY POWER SOURCE, FOR TRANSMITTER AND CAMERA Video In, Internal Battery Power, Camera Power, and optional Remote On This equipment configuration shows the video signal coming in, with an internal battery power source loop which powers the camera and the transmitter. The “Remote On” function is accomplished by connecting the Remote On to ground. DTC COMMUNICATIONS, INC.
USING A SEPARATE CAMERA POWER SOURCE Video In, Battery Powered Transmitter, External Power for Camera only and Remote On 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. This equipment configuration uses internal battery power for the transmitter and an external power source for the camera. The video signal comes into the transmitter.
List of Optional Accessories Part Number COMPONENTS Description 7011145-012 7011145-024 7011145-036 7011145-048 7011145-072 7011145-144 Microphone, 12” length Microphone, 24” length Microphone, 36” length Microphone, 48” length Microphone, 6’ length Microphone 12’ length 4045170-024 Video In cable, Mullti-I/O to RCA(M) with RCA/BNC adaptor, 24” standard 4045171-024 Video In/EXT Power cable, 24”standard Video In: Multi I/O to RCA(M) with BNC adaptor Ext. Power: 24 AWG wire stripped and tinned leads.
COMPONENTS List of Optional Accessories Part Number Description 4045173 Programming cable (Connects from the Multi I/O connector to the DB9 connec tor) 4045174-006 Antenna cable, SMA to TNC, 6”standard length D cell battery pack NOTE: To order a custom cable length, change the -xxx in the part number to reflect the dimension in inches. 18 DTC COMMUNICATIONS, INC.
List of Optional Accessories Part Number VW-ANT-2-SMA VW-ANT-1-SMA ANTENNAS Description VidiWire antenna system 2.4-2.5 GHz VidiWire antenna system 1.7-1.9 GHz 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.
ANTENNAS List of Optional Accessories Part Number Description ANT-VIL Dipole Antenna 1.70-1.85 GHz with right angle SMA adaptor ANT-VIS Dipole Antenna 2.4-2.5 GHz with right angle SMA adaptor The ANT-VIL/S is a 1/2 wave coaxial dipole portable duck antenna. It can be mounted directly to the video transmitter, or at a right angle using the adaptor provided. 7011129 7011131 ANT-2 2dB: Dipole 1.7-1.85GHz *Must be used with SMA to TNC antenna cable (4045174-006). ANT-2 2dB: Dipole 2.4-2.
Part Number ANT-109 Description ANTENNAS dBic 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 2 3 4 5 6 7 8 9 10 11 12 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).
PROGRAMMING Programming 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Make sure the video transmitter ON/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 Connect the programming cable into a power source. Plug the serial cable of the programming cable into the COM1 or COM2 port of your computer and turn the transmitter switch to ON. The green dot is ON.
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880- 4411 www.dtccom.
