DTC Communications VXS250 Video Transmitter User Manual FCC Bodyworn

DTC Communications Inc. Video Transmitter FCC Bodyworn

Revised Manual

DTC COMMUNICATIONS INCORPORATED PN OP1920256 REV AVBS2-250 Frequency 2200 - 2300 MHzVBS-250 Frequency 2400-2500 MHzVBL-250 Frequency 1700-1850 MHz1/4 W1/4 W1/4 W1/4 W1/4 Watt, Body Watt, Body Watt, Body Watt, Body Watt, Body WornornornornornVVVVVideo Tideo Tideo Tideo Tideo TransmitterransmitterransmitterransmitterransmitterManualManualManualManualManual1/4 W1/4 W1/4 W1/4 W1/4 Watt, Body Watt, Body Watt, Body Watt, Body Watt, Body WornornornornornVVVVVideo Tideo Tideo Tideo Tideo TransmitterransmitterransmitterransmitterransmitterManualManualManualManualManual
DTC COMMUNICATIONS, INC.2How to contact DTCFor operator and troubleshootinginformation, customers are encouraged to refer tothe details in this manual. For additionalclarification or instruction, or to order parts, contactDTC.Customer Service is available Monday throughFriday between the hours of 9:00 AM and 5:00 PMEST at:Tel: 603-880-4411Fax: 603-880-6965Website: www.dtccom.comEmail: info@dtccom.com486 Amherst StreetNashua, New Hampshire 03063USACopyright NoticeCopyright © 2002DTC Communications, Inc. All rightsreserved. No part of this document may bereproduced, transmitted, transcribed, stored in a re-trieval system or translated into anylanguage or computer language, in any form or byany means, including but not limited to electronic,magnetic, mechanical, optical, chemical, manual orotherwise, without the prior written permission of DTCCommunications, Inc.DisclaimerThe information in the document is subject to changewithout notice. DTC makes no representations orwarranties with respect to the contents hereof, andspecifically disclaims any implied warranties of mer-chantability or fitness for a particular purpose. DTCreserves the right to revise this publication and tomake changes from time to time in the content hereofwithout obligation of DTC to notify any person of suchrevision or changes.TrademarksTrademarks of DTC Communications, Inc. include:• DTC• MiniPIX®• DynaPIX®Other product names used in this manual are theproperties of their respective owners.WarrantyDTC warrants its manufactured components againstdefects in material and workmanship for a period oftwo (2) years, commencing on the date of originalpurchase.Products manufactured by others that are approvedfor use with DTC equipment are warranted for themanufacturer’s warranty period, commencing fromthe date of shipment from DTC.FCC informationThe following information is provided as aservice to our law enforcement customers whorequire a Part 90 station license for videosurveillance operations using the 2450 to 2483.5MHz band.You will need to provide:• Form 600 (the application form)Forms can be obtained from the FCC on their web-site at:www.fcc.govYou can also contact the FCC using their FAX backservice at: (888) 418-3676Additional instructions are available by telephone at:(888) 225-5322The filing fee form is returned to:Federal Communications Commission1270 Fairfield RoadGettysburg, PA 17325-7245
DTC COMMUNICATIONS, INC. 3Manual ConventionsNOTE Describes special issues you should be aware ofwhile using a particular function.WARNING Calls out situations in which equipmentcould be damaged or a process could be incorrectlyimplemented, but in which operator safety is not afactor.TIP Describes application hints.TABLE OF CONTENTSRF EXPOSURE STATEMENTWhen used as directed, the maximum SAR of this device is2.7 W/kg, which meets the limits set forth by the FCC. Referto Appendix A in this manual for instruction in the proper useof antennas with this device. When used in non-portableaplications, a separation distance of at least 20 cm. must bemaintained between the antenna and the body of the user ornearby persons.Note: This device is for occupational use only. Occupa-tional user are those persons who are exposed as aconsequence of their employment provided thesepersons are fully aware of and exercise control overtheir exposure.Quick Start ........................................................................... 4Overview .............................................................................. 5Features ............................................................................... 6Specifications ....................................................................... 7Battery Drain ........................................................................ 9Connectors......................................................................... 10Connections ........................................................................11Equipment Configurations ................................................. 12Optional Accessories ........................................................ 16Programming...................................................................... 26Appendix A ......................................................................... 30FCC ID# H25VXS250
DTC COMMUNICATIONS, INC.4QUICK START GUIDE1Make sure that the ON/OFF switch is set to OFF. (Red dot is OFF).2Install 4 “AA” batteries in the internal battery compartment of the module. (Lithium batteries are recommended)3Using a screwdriver, turn the channel selector to the correct transmissionchannel number.4Connect an antenna to the ANTENNA connector on the module.5Connect the microphone or microphones to the MIC-1 and MIC-2 connectorson the module.6Connect a video source to the Video/Multi I/O connector.7Slide the power switch to the ON position (Green dot is ON) to apply power tothe transmitter.Note: While installing the batteries, observe proper polarity as printed in thebattery compartment. Reverse polarity protection is a built-in design featureof the transmitter. If a battery is installed backwards, this feature prevents thetransmitter from powering up, without damaging the transmitter or battery.Warning: Do not apply power to the transmitter until an antenna has beenconnected in step 4.Warning: Refer to Appendix A of this manual for information on the properuse of antennas.57 1463 2
DTC COMMUNICATIONS, INC. 5OVERVIEWWhat should you expect to receive with your 250mWTransmitter. Some of these components may beoptional.1 VBS/VBL Video Transmitter1 Dipole antenna with right angle SMA connector1 One Video, Power in, and camera power cable1 DTC programming software package1 DTC programming cable8 BatteriesNOTE: The dipole antenna included is not recommended for normaluse! This antenna enables you to quickly set up your transmitterand ensure proper operation. DTC highly recommends the use ofcircularly 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 yourconvenience.)The VBL/VBS series video transmitters from DTC represent the first true “video body wires” available. DTC has developed afully 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 thetransmitters with miniature board cameras is exceptionally easy, and in the case of 5 volt cameras, power may be provided tothe 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.6FEATURESRemote Switching CapabilityExternal Power Loop ThroughProgrammableAudioEfficient Switching Power SupplyCamera Power Available thromughMulti I/O Connector•You may turn the device ON remotely, by attaching a switch to oneof the pins on the Multi I/O connector. DTC provides hard-wired and wirelessswitches for this application.• The power applied to the Multi I/O pin is automatically looped through theunit, and available on a second pin to power a remote device, such as acamera. If you apply 9 Volts in, you will get 9 -.05 (8.5) Volts out. Note: If internal batteries are used at the same time external power is used, thebatteries will continue to supply some of the transmitter’s’ power, resulting incontinued dischare of the batteries.WARNING: Make sure your camera will operate on the voltage being suppliedto the transmitter.User programmable video channels, selectable in 250 kHz steps. Two userprogrammable audio sub carriers, selectable in 10 kHz steps from 6 MHz to7.5 MHz.• Audio sub carriers are OFF unless microphones are attached. Thetransmitter automatically senses when a microphone has been attached.• The audio sub carriers are phase locked, and will not drift into the videosignal.• Automatic Gain Control is provided on each audio input, amplifying softsounds.• They generate far less heat than a traditional video transmitters.• They operate significantly longer than traditional video transmitters on thesame power source.• When powering the device using the internal battery pack, regulated 5 VDC isavailable on the multi I/O connector, limited to 200 mA current drain.Feature Description
DTC COMMUNICATIONS, INC. 7SPECIFICATIONSSpecifications for the body worn VBS/VBL-250Power Supply Internal batteries 4 “AA” batteries or external 9-16 VDC.Power Consumption 2.5 Watts (not including camera)Battery life 3 hours - Minimum AA batteriesReverse polarityprotection YesDimensions 2.5 x 4.5 x 0.675”Camera Power Using external power input:Same as supply voltage -0.5 Vdc switched (200 mA max)Using internal batteries:5 VDC @ 175 mA, switched (internal regulator)Controls 10 channel select rotary switchPanel mounted, slide ON/OFF switchConnectors 2 pin Lemo: Mic 12 pin Lemo: Mic 2SMA: Antenna6 pin Multi I/O: Video in, Data in, DC input 9 -16 VDC,camera power, Remote ON/OFF, Multiplexed Data out,GroundProgrammability Video: 2400 - 2500 MHz (VBS-250)1700 - 1850 MHz (VBL-250)250 KHz resolution stepsAudio: User programmable from 6.0 - 7.5 MHz, in10 kHz stepsChassis notes Machined solid aluminum with rounded edges.AudioGeneral Mic level input (line level factory opt.) 50 - 3000 HzPhased locked with AGC on both inputs. Sub-carrier autosensing, only active when microphone is attached.Number of sub-carriers 2Sub-carriers frequencies 6.0 - 7.5 MHz , user programmable Four lithium “AA” batteriesFRONT PATCH ANTENNABACK PATCHANTENNASPLITTERCAMERAMICROPHONESTRANSMITTER
DTC COMMUNICATIONS, INC.8SPECIFICATIONS Sub-carrier ON/OFF control Subcarriers are activated when mic is connected.Subcarrier frequency stability +/- 0.003%, -30°C to +70°CSub-Carrier Deviation 50 kHz peakAudio S/N 45 dB min.Frequency Response BW1.5dB = 50 - 3000 HzTotal Harmonic Distortion <2%Input Level 8 mVpp @ 400 Hz for 50 kHz peak dev.Pre-Emphasis 75 uSInput Impedance 10 k OhmVideoVideo FrequencyResponse BW1.5dB = 6 Hz - 5.0 MHzInput Impedance 75 OhmsInput Level 1Vp-p Max.S/N 60 dB min.Pre-Emphasis Per CCIR 405 525 line curveDifferential Gain 5%RFOperating Frequency 1700 - 1850 MHz, 250 KHz resolution steps2400 - 2500 MHz, 250 KHz resolution stepsPower output 250 mW min. @ nominal supply voltage, 25 Deg. C.-3 dB @ 3.6 VDC int-2 dB over temp.Output Impedance 50 OhmsSpurs and Harmonics output -50 dBcLoad Pull Stability 8:1 VSWRFrequency Stability +/- 0.003%, -30°C to +50°C
DTC COMMUNICATIONS, INC. 9SPECIFICATIONSFour lithium batteries Transmitter & CameraInternal Battery Type Part Number Transmitter Only Camera 5V@200mA4 AA Alkaline 8030001 4 hours Not recommended(Internal)4 AA Lithium 8030030 6 hours 4 hours(Internal)External Battery Type Part Number Transmitter Only Camera 12V@150mA9 AA Alkaline Pack 4045131 6 hours 4 hours(External)9 AA Lithium 4045132 9 hours 6 hours(External)9 AA NiMH 4045130 7 hours 4 hoursRechargeable(External)10 D Cell Battery 4045177 55 hours 25 hourspack Alkaline Estimated Battery Life:Modulation Sensitivity 8 MHz/V nom.Modulation SensitivityVariation +/- 5% across the bandPeak Carrier Deviation 4 MHz nom.Number of channels 10 max. (user programmable)Sub-carrier sideband level -28 dBc, +/- 2 dBEnvironmentalTemperature Range -30°C - +70°CHumidity 90% (non-condensing)
DTC COMMUNICATIONS, INC.10MICROPHONE CONNECTORSTwo connectors accommodate two microphone inputs. Each connector has twocontacts and provides power to the microphone as well as connecting the audiosignal into the transmitter. The audio sub-carriers are activated by the presence ofthe microphone. If a microphone is removed, that sub-carrier is removed from thetransmit signal. Turning off the unused sub-carrier saves power and improvespicture quality.CONNECTORSMicrophone ConnectorsStandard Male SMA connectorMATING CONNECTORSLemo Male Part # (FFS.01.250.DLAE31)DTC Male Part # (8570003)Hirose Part # HR10A-7P-6P (02)DTC Part # 954020
DTC COMMUNICATIONS, INC. 11ANTENNASA standard SMA connector is used as the antenna connector on both theVBS/VBL-250.TIP: You may use the VBS/VBL series transmitters with other manufacturersantennas. Verify that they are suited for the band you are operating in.WARNING: Refer to Appendix A of this manual for information on the properuse of antennas.CHASSIS MOUNTED POWER ON/OFF SWITCHA slide switch is provided for local control of power ON and OFF. Green dot isON, Red dot is OFF.NOTE: REMOTE ON overrides the chassis mounted OFF switch. (i.e. Whenthe chassis mounted power switch is set to OFF, REMOTE ON can be usedto turn the transmitter ON.)CHANNEL SELECT SWITCHSelect a transmission channel by using the rotary switch located on the frontsurface of the transmitter. Use a screwdriver to rotate the switch to the desiredchannel number.MULTI I/O CONNECTORThe multi I/O (6-pin Multi I/O) connector is mainly used as the video and externalpower input connector. It also provides access to many transmitter functions, suchas:• Programming the device• Video in• Power in• Remote on• Camera powerCONNECTIONSOn/OFFSwitchAntenna ConnectorMulti I/O ConnectorNOTE: When using the externalpower: camera power = externalpower -0.5 Vdc.When using internal batteries: camerapower = 5 Vdc.Pin 3: CameraPower OutputPin 1: GroundPin 2: Ext powerinput 9-16VDCPin 6: Video inPin 5: RS-232 inPin 4: Remote on,switched to groundmultiplexed RS-232 outChannelSelect
DTC COMMUNICATIONS, INC.12TRANSMITTERSPLITTERCAMERAFRONT PATCHANTENNABACK PATCHANTENNAMICROPHONEMICROPHONE+- EXTERNALCAMERA POWEREXTERNAL CAMERA POWER The basic VBS/VBL-250 configurationconsists of the video transmitter, Vidi-WireAntenna, and DTC cable part number4045170-024. This cable is connected to themulti I/O port of the transmitter, and isconfigured to supply:• The video signal from the camera to thetransmitter.Cable 4045170-024
DTC COMMUNICATIONS, INC. 13The basic VBS/VBL-250 configuration consistsof the video transmitter, Vidi-Wire Antenna, andDTC cable part number 4045194-024. Thiscable is connected to the multi I/O port of thetransmitter, and is configured to supply:• The video signal from the camera to thetransmitter.• Power (5 Vdc) to the camera through theinternal battery pack.This configuration allows the internal batterypack to supply the power to the camera andthe transmitter. It does not depend on supple-mental battery packs to supply power to any ofits components.FRONT PATCH ANTENNABACK PATCHANTENNASPLITTERCAMERAMICROPHONESTRANSMITTERCable 4045194-024INTERNAL CAMERA POWER
DTC COMMUNICATIONS, INC.14 ADDING EXTERNAL POWER The VMS/VML-250 configuration, which usesthe loop through power source for the camera,consists of the video transmitter and DTC cablepart number 4045189-024 . This cable isconnected to the multi I/O port of the transmit-ter.It is configured to supply:• The video signal to the transmitterfrom the camera.• Power to the transmitter through amolex connector that can be easilyconnected to DTC’s battery packs.• Power to the camera through the internalpower loop through.This configuration allows for additonal batterycapacity from connnecting DTC’s supplementalbattery packs to the body worn transmitter. Thecable 4045189-024 allows for this configura-tion.DTC Optional Battery PacksA4045131 (AA non-rechargeable, 13.5 V)B4045177( D-Cell battery pack, 15 V)AlkalineC4045130 (AA rechargeable, 13.5 V)MiMHCAMERAANTENNAPOWER SOURCE for transmitter andcamera via loopthrough 9-16 V.STRIPPED ANDTINNED LEADSSTANDARDABCOPTIONALBATTERYPACKSTRANSMITTERMICROPHONES Cable 4045189-024Note: Optional battery packs are not to beused in body worn applications. Use onlyinternal batteries when the transmitter isto be worn on the body.
DTC COMMUNICATIONS, INC. 15This configuration consists of the video transmit-ter, Vidi-Wire antenna, and DTC cable partnumber 4045192-024. This cable is connected tothe multi/IO port of the transmitter, and is config-ured to supply:• The video signal from the camera to thetransmitter.• Power (5 V) to the camera through theinternal battery pack.• Remote on function through a hard wiredswitch or remote Key FOB transmitter. Thisremote on function overrides the OFF switchlocated on the transmitter chassis.The Remote On function allows you to turn thetransmitter on from a remote location. The RemoteOn function overides the OFF switch on thetransmitter.FRONT PATCH ANTENNABACK PATCHANTENNASPLITTERCAMERAMICROPHONESTRANSMITTERHARD WIREDSWITCHKEY FOBSWITCHRECEIVERKEY FOBSWITCHTRANSMITTERSTRIPPED ANDTINNED LEADSSTANDARDTO OPEN:TO OPEN: PUSH THIS TAB DOWN TO RELEASE THE MOLEX LOCKING MECHANISM, THEN PULL CONNECTORSAPART.TO CLOSE:PUSH CONNECTORS TOGETHER UNTIL THEMOLEX LOCKING MECHANISM CLICKS AND LOCKS Cable 4045192-024ADDING REMOTE ON FUNCTION
DTC COMMUNICATIONS, INC.16ACCESSORIES Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescription1088185 VidiVest™The VidiVest™ is designed to be used in conjunction with DTC’s body worn videotransmitter. The vest supplies compartments for the video transmitter, associatedwiring, antenna system (i.e. VidiWire™), microphones, and a button camera. Thegarment is ventilated for comfort and can be adjusted with velcro straps at thewaist and shoulders. The vest is intended to be worn as an undergarment with aloose fitting shirt or other garment over the vest.4045181 Camera with 3-pin connectorAssemblyThis camera is a high-resolution color CCD type, which has been modified to looklike a shirt button. This allows for easy concealment through a regular buttonhole.4045192-024 VidiVest cable harnessThis cable harness connects all of the components, such as, the transmitter,camera, and remote on.
DTC COMMUNICATIONS, INC. 17Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescriptionVW-ANT-2-SMA VidiWire antenna system 2.4-2.5 GHzVW-ANT-1-SMA VidiWire antenna system 1.7-1.9 GHzThe VidiWire™ antenna system was specifically designed for video transmissionfrom on-body transmitters. This DTC Proprietary system provides the bestpossible omnidirectional video transmission from a body-worn system. Thesystem is composed of three parts: two special patch-type antennas, and aphasing module.WARNING: VidiWire Antennas are housed in a milled aluminum cover whichshields the wearer from RF energy. Make sure the antennas radiating side isdirected away from the body.WARNING: Do not use the VidiWire antenna system on the body with anytransmitter outputting more than 250mW of RF energy.ACCESSORIESWARNING: Refer to Appendix A of this manual for information on the properuse of antennas.SpecificationsType DTC proprietaryVidiWire™ designPolarization Dual PolarizedPeak Gain Pseudo-IsotropicHorizontal Beamwidth OmnidirectionalVertical Beamwidth OmnidirectionalNominal Impedance 50 OhmsGroundplaneRequirements Not applicableSize 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 6ozVW-ANT-2-SMA 2.4 to 2.5 GHz SMA male connectorVW-ANT-2-TNC 2.4 to 2.5 GHz TNC maleconnectorVW-ANT-1-SMA 1.7 to 1.9 GHz SMA maleconnector
DTC COMMUNICATIONS, INC.18 ACCESSORIES Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescription4045170-024 Video In, 24”standard.Video In: Multi I/O to RCA(M) with BNCadaptor. (YELLOW)4045193-024 Video In/Remote On, 24”standard.Video In: Multi I/O to RCA(M) with BNCadaptor. (YELLOW)Remote On: 24 AWG wire with a molexconnector 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 BNCadaptor. (YELLOW)Ext. Power: 24 AWG wire with a molex connectorand stripped and tinned leads. (RED)Camera Power:24 AWG wire with a molexconnector and stripped and tinned leads.(GRAY)
DTC COMMUNICATIONS, INC. 19 ACCESSORIESPart NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescription4045194-024 Video In/Camera Power, 24”standard.Video In: Multi I/O to RCA(M) with BNCadaptor. (YELLOW)Camera Power: 24 AWG wire with a molexconnector 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 BNCadaptor. (YELLOW)Camera Power: 24 AWG wire with a molexconnector and stripped and tinned leads.(GRAY)Remote On: 24 AWG wire with a molexconnector and stripped and tinned leads. (GREEN)
DTC COMMUNICATIONS, INC.20COMPONENTS Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescription4045173 Programming cable (Connects from the Multi I/Oconnector to the DB9 connector)This cable plugs into COM1 or COM2, serial ports of aPC. It allows for the programming of the Video trans-mitter with the DTC Programming software.4045174-006 Antenna cable, SMA to TNC, 6”standard length4045174-012 Antenna cable, SMA to TNC, 12”7011145-012 Microphone, 12” length7011145-024 Microphone, 24” length7011145-036 Microphone, 36” length7011145-048 Microphone, 48” length7011145-072 Microphone, 6’ length7011145-144 Microphone 12’ length7011145-360 Microphone 30’ length4045177 D cell battery pack with locking Molex Micro-fitConnectorNote: Optional battery packs are not to be used in body worn applications.Use only internal batteries when the transmitter is to be worn on the body.
DTC COMMUNICATIONS, INC. 21COMPONENTSTO OPEN:TO OPEN: PUSH THIS TAB DOWN TO RELEASE THE MOLEX LOCKING MECHANISM, THEN PULL CONNECTORSAPART.TO CLOSE:PUSH CONNECTORS TOGETHER UNTIL THEMOLEX LOCKING MECHANISM CLICKS AND LOCKSPart NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescription4045131 AA (13.5 V) Non-rechargeable Battery Pack withMolex Micro-fit Connector4045130 AA (13.5 V) Rechargeable battery pack (NiMH) withMolex Micro-fit Connector8590138 Terminal, Crimp, Female, micro-fit (3.0)wire size 20-24 AWG plt gold.Molex Part # 43030-00098550104 Receptacle, 2 circuit, micro-fit (3.0)in line. Molex Part # 43645-02008590139 Terminal, Crimp, Male, Micro-fit (3.0)wire size 20-24 AWG plt. gold.Molex Part # 43031-00098550101 Plug, 2 circuit, Micro-fit (3.0)Inline. Molex Part # 43640-0200Note: Optional battery packs are not to be used in body worn applications.Use only internal batteries when the transmitter is to be worn on the body.
DTC COMMUNICATIONS, INC.22ANTENNAS Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescriptionVDAR-1 Single 5 dBic “Hybrid-Patch”™ Antenna with mountingoptions. Connector: TNC Female on chassisThe VDAR video antennas are designed to operate with traditional single videoreceivers and multiple antenna configurations for diversity receivers. The antennauses the DTC Hybrid-Patch system to ensure high purity circular polarization. Thisensures the highest possible performance in video reception, especially indiversity systems. It is available in three different bands. Reversible and adjust-able suction cup mounts come standard for quick and easy installation on theinside or outside of window or other hard, smooth surfaces.VDAR-1WARNING: Refer to Appendix A of this manual for information on the properuse of antennas.SpecificationsType Three Hybrid Patch™elementsPolarization RHCPPeak Gain 5dBicHorizontal Beamwidth 90°Vertical Beamwidth 90°Nominal Impedance 50 OhmsGroundplane Req. Built-inSize 6.6” H x 6.6” W(167mm x 167 mm)Weight 12 Oz. (34g)DTC Part Number Frequency Range7011156-1 1700 to 1850 MHz7011156-3 1990 to 2110 MHz7011156-2 2400 to 2500 MHz
DTC COMMUNICATIONS, INC. 23ANTENNASPart NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescriptionQHA-4 Quadrifilar Helix Antenna with Ring-Hybrid feedConnector: TNC FemaleMust be used with SMA to TNC antenna cable(4045174-006).The QHA family of antennas was developed to provide a compact solution forpattern-tailored circularly polarized antennas. This rugged antenna is omnidirec-tional when the antenna is vertical. The pattern is slightly elevated to allowoverhead coverage. The base of the antenna includes a special flat with #10-32threaded hole, 0.25-in. deep for mounting. It is available in both RHCP and LHCPversions.WARNING: Refer to Appendix A of this manual for information on the properuse of antennas.QHA-4 SpecificationsType Quadrifilar Helix withRing-hybrid feedPolarization CircularPeak Gain 4dBiC at 24° above horizonHorizontal Beamwidth OmnidirectionalVertical Beamwidth 46°Nominal Impedance 50 OhmsGroundplane req. Not RequiredSize 8.0” L x 1.25” dia(203 mm x 32 mm dia)Weight 3.7 oz. (105 g)DTC Part Number Frequency RangeQHA-4-2-R 2.4 to 2.5 GHz, RHCPQHA-4-2-L 2.4 to 2.5 GHz, LhcpQHA-4-1-R 1.7 to 1.9 GHz, RHCPQHA-4-1-L 1.7 to 1.9 GHz, LHCP
DTC COMMUNICATIONS, INC.24ANTENNAS Part NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescriptionANT-5-PIG 5 dBi Patch Antenna Connector: SMA or TNC Male on18" coax. “pigtail”.DTC has developed a series of circularly polarized patch antennas for use in the2.0 to 2.5 GHz indoor and short term outdoor installations. The ANT-5-P is a 5dbigain, 90 degree wide beamwidth, antenna, mounted on a 0.125 in. thick aluminumplate. Typical uses include disguised transmitters and vehicular-mounted transmit-ter antennas and in a variety of receive applications.WARNING: Refer to Appendix A of this manual for information on the properuse of antennas.Ant-5PSpecificationsType Patch antenna with integralring hybridPolarization RHCPPeak Gain 5dBicHorizontal Beamwidth 90°Vertical Beamwidth 90°Nominal Impedance 50 OhmsGroundplane Req. Built-inSize 4.0” W x 4.0” H X 0.625” D(102mm x 102mm x 16mm)Weight 6.4 Oz. (180 g)DTC Part Number Frequency RangeANT-5-P-SMA 2.0 to 2.5 Ghz with SMAmale connectorANT-5-P-TNC 2.0 to 2.5 Ghz with TNCwith male connector
DTC COMMUNICATIONS, INC. 25ANTENNASPart NumberPart NumberPart NumberPart NumberPart Number DescriptionDescriptionDescriptionDescriptionDescriptionANT-10 9dBic Wideband Panel Connector: TNC FemaleDTC has developed a series of circularly polarized panel antennas for use inwideband transmit and receive applications from 1.7 to 2.7 GHz. The ANT-10-R isa very wide bandwidth, unidirectional log-spiral array. This antenna has usefulgain, with some sidelobe variation, to 4 GHz. It can be mounted to a wall or swivelmounted with the MAF-1 grip on two surfaces, via two pairs of “1/4-20” tappedholes 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. Theantenna is suitable for indoor and short-term outdoor use. It must be protected forextended outdoor use and installations since it is not waterproof.WARNING: Refer to Appendix A of this manual for information on the properuse of antennas.Ant-10SpecificationsType Log-spiral slot array, absorberloadedPolarization RHCPPeak Gain 9dBicHorizontal Beamwidth 30°at 2.0 GHzVertical Beamwidth 30°at 2.0 GHzNominal Impedance 50 OhmsGroundplane Req. Not requiredSize 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 Range4044411 1.7 to 2.7 GHz; RHCP7011142 1.7 to 2.7 GHz; RHCP withMAF - 1 grip included
DTC COMMUNICATIONS, INC.26IntroductionDTC has built in a lot of flexibility in the programming options you have on the VBLand VBS series transmitters. You can choose to use some, all or none of thisflexibility.When you order a VBL or VBS transmitter, DTC will factory program your frequen-cies at no additional charge to you. You may want to place a sticker over therotary switch on the chassis, so users in the field don’t attempt to change frequen-cies. This is often the best path for state and local agencies with limited frequen-cies 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 sub-carriers. This is ideal if you often work with other agencies, or anticipate theequipment being used by a multi-jurisdictional task force. You can program up toten channel settings per unit. In general, this allows you to program most varia-tions you might encounter in the field at the depot level.As a practical matter, your VBL or VBS transmitter’s video frequencies and audiosub-carriers will be dictated by the frequency and sub-carriers(s) of your receiverand/or repeater. In many cases, these devices are crystal controlled or have fewchannel options.TIP: Make sure that you program your transmitter to match the frequenciesand audio sub-carriers or your receiver, and test the components as a systemprior to going into the field! PROGRAMMING
DTC COMMUNICATIONS, INC. 27PROGRAMMINGInstalling DTC Universal Programming Software on your PCNOTE: Uninstall any previous versions by going to Add/Remove Programs,clicking on DTC Universal Programming, and clicking on uninstall.1Click on Start, click on run.2Click on the Browse button.3Click on or find your CD drive.4Install the JAVA Runtime Environment Application first (CD provided).5Follow the install wizard screens.6Install the Universal Programming software next (floppy provided).7Click on Start, click on run.8Click on the Browse Button.9Click on your floppy drive.10 Double click on the setup.11 Follow the install wizard screens.Your programming software is installed.
DTC COMMUNICATIONS, INC.28PROGRAMMINGSERIAL PORT OFCOMPUTERCOM1 OR COM2+_AC POWERADAPTER1Make sure the video transmitter ON/OFFswitch is set to OFF. The red dot isOFF.2Make sure the transmitter has an antenna installed into the antenna connec-tor prior to programming.3Install the programming cable into the Multi I/O connector on the transmitter.4Plug the serial cable of the programming cableinto the COM1 or COM2 port of your computerand plug in the AC adapter.5Turn the transmitter switch to ON. The green dotis ON.6Select Start, programs, DTC communications onyour computer.7The system allows you to select device COM1 orCOM2, dependingon which serial portyou are connectedto.8Follow the instruc-tions on the DTCUniversal Program-ming screens tobegin the downloadprocess.67823415
DTC COMMUNICATIONS, INC. 299Click on the “Tx Channel” tab in the programmer screen.10 Select a channel and click on the Edit Channel button to change settings.11 Enter your new frequency and settings.12 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.Your new settings have been installed.PROGRAMMING139101211
DTC COMMUNICATIONS, INC.30Using Antennas with the VBS/VBL-250 Video TransmitterAPPENDIX ABodyworn applications:When the VBS/VBL-250 video transmitter is to be worn on the body,only the DTC VidiWire antenna system should be used to insure that appropriate RFexposure levels are not exceeded. This antenna has been extensively tested andfound to be safe when used as directed. The antennas used in the VidiWire systemare clearly labeled as to which side of the antenna should be placed against thebody. These directions must be observed to insure safe and effective operation. Inaddition, there are steps that the user may take to further reduce their RF exposure.Turning the transmitter OFF when it is not needed will reduce the actual time that theuser is exposed to the RF signal. For optimum performance, keep arms, hands, etc.away from the side of the antenna that faces away from the body.Non-portable applications:In mobile or fixed location applications, any suitable antenna may beused. However, to insure safe operation, it is imperative that proper spacing bemaintained between the radiating surface of the antenna and any persons body.Except as described above for bodyworn applications, no antenna should be placedcloser than 8 inches (20 cm) to the body. To insure that proper spacing is main-tained, locate the transmitter or arrange physical barriers in such away that peopleare prevented from approaching too closely.
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880- 4411www.dtccom.com

Navigation menu