DTC Communications T2071 Surveillance Transmitter for Law Enforcement User Manual T2071M

DTC Communications Inc. Surveillance Transmitter for Law Enforcement T2071M

NEW MANUAL

DTC COMMUNICATIONS INCORPORATEDDerringerAudio TransmitterT-2071-M
2 OP1920175 Rev 1How to contact DTCFor operator and troubleshootinginformation, customers are encouraged to refer tothe details in this manual. For additionalclarification or instruction, or to order parts,contact DTC.Customer Service is available Monday throughFriday between the hours of 9:00 AM and5:00 PM EST at:1-800-233-8639Tel: 603-880-4411Fax: 603-880-6965Website: www.dtccom.comEmail: info@dtccom.com486 Amherst StreetNashua, New Hampshire 03063USACopyright NoticeCopyright © 2003DTC 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 ofDTC Communications, 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 informationForms can be obtained from the FCC on theirwebsite 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
3Manual ConventionsNOTE Describes special issues you should be awareof while 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 CONTENTSOverview ............................................................................. 4Quick Start ........................................................................... 5Tips ..................................................................................... 6Connections ....................................................................... 7Specifications .................................................................. 8-9Programming .............................................................. 10-13Accessories...................................................................... 14Contact ............................................................................. 15What should you expect to receive with your Derringertransmitter?• T2071-M Transmitter• 2 9V Batteries• 1 “AA” Battery Pack• Programming Software kit with programming cable• 36" Microphone• Noodle antenna• Data sheet and 1 Operator’s Manual• Screwdriver
4OVERVIEWThe T2071-M Derringer is a small audio transmitter whichcan transmit a secure and clear audio signal. It has up to 10programmable channels for the RF transmission,accessed through a PC with DTC programming softwareinstalled. The transmitter is designed for personal protec-tion and evidence gathering missions. Its miniature sizeand rugged design ensures safe concealment and long-lasting performance. The frequency is programmable fornarrowband (TIA/EIA 102 compliant) or wideband operation.These parameters may be saved in memory. The Derringerhas a built-in internal microphone, the abilty to use an 36”external microphone, and built-in scrambler.Channel Programming Includes• Frequency• AGC (Automatic Gain Control) On/Off• Width (Narrow / Wide band)• Scrambled / Clear Signal ON/OFFNote: Do not operate the transmitter without thenoodle antenna installed.NOTE: To prevent unwanted interference keep themicrophone and the noodle antenna separated.Do not allow them to come into contact with eachother.Top ViewFront ViewUsing The Derringer.250.000.420.200.313.313.145.145.210.210.625.6251.1001.100.590.590000000.000.000.000.000.2.140.2.140MULTI-PIN CONNECTOR/ EXTERNAL MICROPHONEANTENNAINTERNAL MICROPHONE
5QUICK STARTPROCELLDURCELL4312Using A Separate Microphone1Install the 36” microphone into the microphoneconnector on the transmitter.2Install the noodle antenna into the antenna connectoron the transmitter. Adjust length according to band ofoperating frequencies.3Attach fresh batteries to the snap on connector.4Using a small screwdriver, turn the recessed rotaryswitch located on the front cover to the desiredchannel. The configuration of each channel ismanaged with DTC programming software. Theprogramming software included with your Derringerallows you to assign frequencies, and set thedeviation.The NOODLE ANTENNAThe “noodle” antenna may be adjusted over the frequencyrange of 138 MHz to 174 MHz by adjusting the amount of wirethat is folded back along side the end of the antenna. Useheatshrink tubing to hold the adjusted length.The total length may be calculated by the following formula.Length (inches) = 2950 / (Freq MHz)Example:CH1: 150.000CH2: 151.000CH3: 152.000Center of operating frequencyLength (inches) = 2950/151Total length = 19.5"LengthLoop2950 151 = 19.5
6TIPS34Battery Operation: Always remove battery when not in use. It is imperative to discard partially used batteries, as their remaining life is not predictable. Always start an operation with fresh batteries.Audio Circuit and Body Mounting Tips:All body-worn transmitters are susceptible to “clothing noise”.Reducing this rubbing effect is accomplished in a variety of ways.Secure the transmitter to the body with an ace bandage or a customharness.1Try to locate the microphone in an area where “pickup” will bebest and rubbing noise is least. Avoid the arms, legs, crotch,under the arms or waist area. Front torso mounting is ideal.2Always provide a small amount of strain relief on the microphone cable itself. This reduces the noise caused by themicrophone cable and element being tugged and preventscable damage.3Secure the microphone cable to the body with medical adhesivetape in at least two spots, the final being about an inch below theelement. Remember to leave a strain relief loop!4Completely cover the microphone element (facing outward) withan ordinary Band Aid™. This provides a damped baffle for themicrophone and a slick surface for clothing to rub on, andactually does not impact audio pickup level at all.Note: This is a push-on, pull offlocking connector. The connectorwill rotate 360° in the transmitterwithout disconnecting. Useextreme caution when connectingor removing the noodle antenna.To remove pull the noodle antennastraight out.PULL UP ON SECTION INDICATEDTO RELEASE LOCK AND REMOVE
7Antenna Connector Multi PinConnectorTop ViewCONNECTIONSMicrophoneFront ViewChannel SelectSwitchableANTENNA (Male MMCX Connector)This connector accepts the noodle antenna.MICROPHONEThe Derringer uses an internal electret microphone in additionto an external microphoneMULTI-PIN CONNECTOR (Male multi-pin connector)This connector mates with the 36” external microphone andalso mates with the programming cable and optional vehicularpower adaptor model VPA-2001.CHANNEL SELECT SWITCH (Rotary Switch)The channel select switch allows you to change transmitchannels and is located on the front of the transmitter. It is arotary switch which requires the use of the supplied screw-driver to turn the switching mechanism. Select a transmitchannel number by turning the rotary switch. The configurationof each channel is managed with DTC programming software.The programming software included with your Derringer allowsyou to assign frequencies, set the deviation, turn ON/OFFscrambler mode, and turn ON/OFF AGC.
8SPECIFICATIONSThe Derringer measures just 2.1” by 1.1” by .4”; it providesten user programmable channels and audio scrambling.Automatic gain control is programmable by channel as well.The Derringer contains an internal microphone, which isautomatically disabled if an external microphone is at-tached. Power is provided by a convenient snap-on 9 Voltbattery type connector.The back cover of the Derringer allows an individual to usea pencil to write down the frequency for each channel, as aquick reference guide.Front Cover ViewBack Cover ViewNote: Consider using adesignator for yourfrequency, such as “A” or“Blue”. If you lose control ofthe transmitter you won’tcompromise your frequency.
9SPECIFICATIONSITEM SPECIFICATIONAGC Range 45dBMicrophone Electret-fet internal or externalSpurious & Harmonics -50 dBc max non-harmonic, -45 dBcharmonicOperating Temp Range -30° C to +70° COperating VoltageRange 6.0 to 9.0 VDCControls 10 channel recessed rotary switchConnectorsRF output to antenna - MMCXMulti-pin Telocate (JT4MB -00)Pin 1 - Audio from external microphonePin 2 - RS-232 serial inputPin 3 - RS232 serial outputPin 4 - external powerShield - ground returnPower Sources ExternalNOTE All specifications at 25° C and R/Fmeasurements taken into 50 Ohms unlessotherwise notedNTIA Compliant TIA/EIA- 102 - analog modeDimensions 2.10" W x 1.1" H x .043" D
10PROGRAMMINGIntroductionWhen you order a Derringer audio transmitter, DTC will factory program yourfrequencies at no additional charge to you. You may want to place a sticker overthe rotary switch on the chassis so users in the field don’t attempt to changefrequencies. This is often the best path for state and local agencies with limitedfrequencies available to them.DTC will also provide you with free software and a free programming cable,enabling you to change your transmit frequencies.This is ideal if you often workwith other agencies, or anticipate the equipment being used by a multi-jurisdic-tional 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 thedepot level. You will be able to program frequency, narrowband/wideband, AGCenabled/disabled and scrambler ON/OFF.As a practical matter, your Derringer transmitter’s frequencies will be dictated bythe frequency of your receiver and/or repeater. In many cases, these devices arecrystal controlled or have few channel options.TIP: Make sure that you program your transmitter to match the frequenciesof your receiver, and test the components as a system prior to going intothe field!
11PROGRAMMINGInstalling DTC Universal ProgrammingSoftware on your PCNOTE: Uninstall any previous versions by going to Add/Remove Programs, clicking on DTC Universal Pro-gramming, 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
12PROGRAMMINGCOM1 or COM2 Serial port of computer1Check that an antenna (or non-radiating load) is connected to the DerringerMMCX antenna port.2Connect the DB9 end of the DTC programming cable to either the COM1 orCOM2 port of the PC depending on port availability.Note: A 6-foot extension cable may be used between the PC and the DTCprogramming cable.3Plug the round 4-pin connector end of the DTC programming cable into theDerringer multi-I/O connector. Rotate the cable plug until the connector canbe felt to align properly. At this point push the connector in and screw theretaining sleeve until snug4Check that the Derringer has a battery power installed with proper polarityorientation.5On the PC, mouse-click on Start, Programs, DTC Communications.6You will be prompted to select either COM1 or COM2.7Select the desired port as defined in Step 2.Connect the serial end of theprogrammingcable here
13PROGRAMMING8Mouse-click OK or cancel.9Now follow the instructions on the DTC Programming Application to beginthe download and subsequent frequency reprogramming process.Select the channel number you want to editClick Edit ChanInput the frequency using key pad on window or keyboard numbersSet scramble optionsSet AGC (Automatic Gain Contol) optionsWhen done, click OK-if no change is desired, click CANCELWhen all programming edits have been completed, select UPLOAD totransfer your new settings to the Derringer.Your Derringer is now programmed.10 After successfully using the DTC Programming Application, remove theround 4 pin multi-I/O connector from the Derringer by unscrewing theretaining sleeve on the connector “barrel”.Warning: Do not disconnect the programming cableuntil the programming operation (connect or Upload)is complete.
14ACCESSORIESPart Number Description7011150 3’ MicrophoneDTC Universal Programming SoftwareDTC part number 8002025Part Number Description4045319 Noodle AntennaPart Number Description4044738 Programming CablePart Number Description4044377 4 “AA” Battery Pack
15CONTACT USDirector of Federal SalesJohn Morgantoll free (800) 233-8639voice (603) 546-2122cell (603) 320-3257fax (603) 880-6965jmorgan@dtccom.comFederal Sales ManagerMarianne Caiazzatoll free (800) 233-8639voice (603) 546-2121cell (603) 320-3256fax (603) 880-6965mcaiazza@dtccom.comFederal Sales ManagerWireless Video ProductsJohn Robeytoll free (800) 233-8639voice (703) 878-4375fax (703) 680-7997cell (571) 217-0599pager (877) 468-1764jrobey@dtccom.comSales RepresentativesNational Sales ManagerState & Local AgenciesMichael Demostoll free (800) 233-8639voice (603) 546-2120cell (603) 320-3255fax (603) 880-6965mdemos@dtccom.cornInside SalesFederal/InternationalSteve Chisholmtoll free (800) 233-8639voice (603) 546-2124fax (603) 880-6965schisholm@dtccom.cornInternational Sales ManagerJuan Alfonsovoice (603) 546-2126cell (978) 505-1745fax (603) 880-6965jalfonso@dtccom.comSurveillance PlatformsISTtoll free (888) 478-6599voice (954) 755-0724cell (954) 755-0817teamist@aol.comCanadaDyplex Communications LId.Gary Sayervoice (416) 675-2002tax (416) 675-1822info@dyplex.comREGIONAL SALES MANAGERSHoward Richtoll free (888) 819-8570voice (860) 626-8570fax (860) 626-8571NY, MA, CT, RI, PA, NJ, MD, DEhrich@dtccom.comGary Nicholstoll free (866) 794-2823voice (765) 473-8917fax (765) 473-8920MN, WS, MI, IA, MO, IL, IN, OK, KYgnichols@dtccom.comFloyd Flowersvoice (208) 667-5197fax (208) 769-9387WA, OR, ID, MT, ND, WY, UT, SDJoe Parkinsontoll free (800) 952-4914voice (909) 598-5110fax (909) 598-3120CA, AZ, NV, HI, AKjparkinson@dtccom.comTim Scallytoll free (877) 860-9096voice (817) 368-9830fax (817) 281-0453TX, OK, AR, LA, NM, KStscally@dtccom.comFrank Priolitoll free (800) 246-2610voice (727) 392-4761fax (727) 320-0509FL, GA, AL, MS, TN, NC, SCfprioli@dtccom.com
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411www.dtccom.com486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411www.dtccom.com

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