2 Watt Watt Video Transmitter Transmitter Operator Manual VMS-2000 Frequency 2450-2500 MHz DTC COMMUNICATIONS INCORPORATED OP1920147 Rev B
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 © 2003 DTC Communications, Inc. All rights reserved.
TABLE OF CONTENTS 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 This product is NOT to be used in a bodyworn application. Refer to Appendix A in this manual for instruction in the proper use of antennas with this device.
QUICK START 6 3 1 2 3 4 5 Make sure that the power to the transmitter is OFF. Using a screwdriver, turn the channel selector to the correct channel number. Connect an antenna to the ANTENNA connector on the module. Select Hi or Lo Power using the recessed switch. Connect the microphone or microphones to the MIC-1 and MIC-2 connectors on the module. 6 Connect a video source and external power (11 -16 VDC) to the Video/Multi-I/O connector.
OVERVIEW The VMS transmitters are small module transmitters designed for off body applications. They are part of a family of video transmitters from DTC that provide 250 mW, 2 Watts and 5 Watts output power. Feature Programmable Audio Sub-Carriers Description 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 connected.
SPECIFICATIONS General Specifications ITEM SPECIFICATION Power Input Voltage External 11-16 Vdc Power Consumption 7.2 Watts (not including camera) Reverse Polarity Protection YES Dimensions 3.9 x 2.7 x 0.512” Camera Power Same as supply voltage going into the transmitter. Current limited to 200 mA.
SPECIFICATIONS Video Specifications Audio Specifications ITEM SPECIFICATION ITEM SPECIFICATION Video Frequency Response BW1.5dB = 6 Hz - 5.0 MHz General Mic level input (line level factory opt.) 50-3000 Hz Phased locked AGC on both inputs. Sub-carrier auto sensing, only active when microphone is attached. Input Impedance 75 Ohms Input Level 1Vp-p M S/N 60 dB min. Pre-Emphasis Per CCIR 405 525 line curve Differential Gain 5% Number of sub-carriers 2 Sub-carrier frequencies 6.0-7.
SPECIFICATIONS Approximate VMS-2000 Current vs. External Supply Voltage (Camera NOT included) 700 650 600 Current Drain (mA) 550 500 450 400 350 300 250 200 11 12 13 14 15 External Supply Voltage (Vdc) 8 Battery Type Part Number Transmitter Only Transmitter and Camera 12V @120mA 10 D-Cell Alkaline Pack 4045177 9.
HEATSINK INFORMATION 11 Baseplate operating temperature is -20° to + 80°C. Most applications will not require a heatsink. In applications where the baseplate temperature will exceed +80°, add “-HO” to any VMXX-2000 transmitter part number for the optional heat sink at no additional charge. The drawing on the left clearly marks the mounting holes for the heatsink installation when required. To install the heatsink. 1 Align the mounting holes of the transmitter to the mounting holes on the heatsink.
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 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.
CONNECTIONS 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. HI/LO Power Switch Channel Select Switch HI/LOW OUTPUT POWER SWITCH Select Hi or Low power by using the recessed power switch. Switching to Hi power is equal to 2 Watt output power. Switching to Low power is equal to 1/4 Watt output power.
BASIC VIDEO TRANSMITTER CAMERA CAMERA POWER + STRIPPED AND TINNED LEADS STANDARD POWER SOURCE for transmitter only, 9-16 V. B OPTIONAL BATTERY PACKS ANTENNA A TRANSMITTER The basic VMS-2000 configuration consists of the video transmitter, dipole antenna, and DTC cable part number 4045171-024. 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.
SINGLE POWER SOURCE The VMS-2000 configuration, which uses the loop through power source for the camera, consists of the video transmitter, dipole antenna, and DTC cable part number 405189-024 . 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.
COMPONENTS Part Number Description Part Number Description Part Number Description 4045171-024 Video In/EXT Power/Cam. Power cable, 24”standard. 4045189-024 Video In/EXT Power/Cam. Power cable, 24”standard. 4045174-006 4045174-012 Antenna Cable 6” standard Antenna Cable 12” Option Specifications Video In: Ext. Power: Specifications Multi I/O to RCA(M) with BNC adaptor (YELLOW) 24 AWG wire with a molex connector and stripped and tinned leads. (RED) Video In: Ext.
COMPONENTS Part Number Description Part Number Description Part Number Description 7011145-012 7011145-024 7011145-036 7011145-048 7011145-072 7011145-144 7011145-360 Microphone, 12” length Microphone, 24” length Microphone, 36” length Microphone, 48” length Microphone, 6’ length Microphone 12’ length Microphone 30’ length 4045177 D cell battery pack with locking Molex 4045173 Programming cable Micro-fit Connector (Connects from the Multi I/O connector to the DB9 connector) This cable plugs in
COMPONENTS TO CLOSE: PUSH CONNECTORS TOGETHER UNTIL THE MOLEX LOCKING MECHANISM CLICKS AND LOCKS TO OPEN: PUSH THIS TAB DOWN TO RELEASE THE MOLEX LOCKING MECHANISM, THEN PULL CONNECTORS APART. Part Number Description Part Number Description Part Number 4045130 AA (13.5 V) Rechargeable battery pack (NiMH) with Molex Micro-fit Connector 8590138 Terminal, Crimp, Female, micro-fit (3.0) wire size 20-24 AWG plt gold. Molex Part # 43030-0009 Receptacle, 2 circuit, micro-fit (3.0) in line.
ANTENNAS Part Number Description 7011129 ANT-2 2dB: Dipole 1.7-1.85 GHz Must be used with SMA to TNC antenna cable (4045174-006). 7011131 ANT-2 2dB: Dipole 2.4-2.5 GHz Must be used with SMA to TNC antenna cable (4045174-006). ANT-2 is a rugged, lightweight linearly polarized dipole for use in the 2.4 to 2.5 GHz and 1.7-1.85 GHz bands. It can be mounted at the end of a cable with a compatible connector. This antenna is ground plane independent.
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.
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 pure circular polarization. This ensures the highest possible performance in video reception, especially in diversity systems. It is available in four different bands.
ANTENNAS Specifications Type Log-spiral slot array, absorber loaded Polarization Peak Gain Horizontal Beamwidth Vertical Beamwidth Nominal Impedance Groundplane Req. RHCP 9dBic 30°at 2.0 GHz 30°at 2.0 GHz 50 Ohms Not required Size 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.
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.
ANTENNAS Part Number Description ANT-17-R 17 dBic Directional Patch Array Connector TNC Male on 18” coaxial DTC developed this very high gain RHCP antenna for the 2.4 to 2.5 GHz band. It provides unidirectional broadside coverage. Unlike conventional Yagi antenna, this antenna is especially suitable for wall mounting. This panel antenna is useful in long-range receive applications, applications in high-multipath environments, where it is impractical or impossible to mount a dish antenna.
APPENDIX A Using Antennas with the VMS-2000 Video Transmitter 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. No antenna should be placed closer than 19 inches (48 cm) to the body. 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.
PROGRAMMING Introduction DTC has built in a lot of flexibility in the programming options you have on the VMS series transmitters. You can choose to use some, all or none of this flexibility. When you order a VMS 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.
PROGRAMMING Installing DTC Universal Programming Software on your PC 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 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 1 2 5 3 4 AC POWER 4 5 COM1 or COM2 Serial port of computer 6 7 3 2 8 Make sure that the power to the video transmitter 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. Connect the programming cable into a power source.
PROGRAMMING 9 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. 9 10 11 12 13 10 Your new settings have been installed.
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