Derringer Audio Transmitter T-2071-M 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:
1-800-233-8639 Tel: 603-880-4411 Fax: 603-880-6965 Website: www.dtccom.com Email: info@dtccom.com 486 Amherst Street Nashua, New Hampshire 03063 USA Warranty DTC warrants its manufactured components against defects in material and workmanship for a period of two (2) years, commencing on the date of original purchase. Products manufactured by others that are approved for use with DTC equipment are warranted for the manufacturers warranty period, commencing from the date of shipment from DTC. FCC information Forms can be obtained from the FCC on their website at:
www.fcc.gov You can also contact the FCC using their FAX back service at: (888) 418-3676 Additional instructions are available by telephone at:
(888) 225-5322 The filing fee form is returned to:
Federal Communications Commission 1270 Fairfield Road Gettysburg, PA 17325-7245 Inc. All translated Copyright Notice Copyright 2003 DTC Communications, rights reserved. No part of this document may be reproduced, transmitted, transcribed, stored in a re-
trieval system or into any language or computer language, in any form or by any means, including but not limited to electronic, magnetic, mechanical, optical, chemical, manual or otherwise, without the prior written permission of DTC Communications, Inc. Disclaimer The information in the document is subject to change without notice. DTC makes no representations or warranties with respect to the contents hereof, and specifically disclaims any implied warranties of mer-
chantability or fitness for a particular purpose. DTC reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of DTC to notify any person of such revision or changes. Trademarks Trademarks of DTC Communications, Inc. include:
DTC MiniPIX DynaPIX Other product names used in this manual are the properties of their respective owners. 2 OP1920175 Rev 1 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. TABLE OF CONTENTS Overview ............................................................................. 4 Quick Start ........................................................................... 5 Tips ..................................................................................... 6 Connections ....................................................................... 7 Specifications .................................................................. 8-9 Programming .............................................................. 10-13 Accessories ...................................................................... 14 Contact ............................................................................. 15 What should you expect to receive with your Derringer transmitter?
T2071-M Transmitter 2 9V Batteries 1 AA Battery Pack Programming Software kit with programming cable 36" Microphone Noodle antenna Data sheet and 1 Operators Manual Screwdriver 3 OVERVIEW Top View 0 0 2
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.625.625 The T2071-M Derringer is a small audio transmitter which can transmit a secure and clear audio signal. It has up to 10 programmable channels for the RF transmission, accessed through a PC with DTC programming software installed. The transmitter is designed for personal protec-
tion and evidence gathering missions. Its miniature size and rugged design ensures safe concealment and long-
lasting performance. The frequency is programmable for narrowband (TIA/EIA 102 compliant) or wideband operation. These parameters may be saved in memory. The Derringer has 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/OFF Note: Do not operate the transmitter without the noodle antenna installed. NOTE: To prevent unwanted interference keep the microphone and the noodle antenna separated. Do not allow them to come into contact with each other. Using A Separate Microphone 1 2 3 4 Install the 36 microphone into the microphone connector on the transmitter. Install the noodle antenna into the antenna connector on the transmitter. Adjust length according to band of operating frequencies. Attach fresh batteries to the snap on connector. Using a small screwdriver, turn the recessed rotary switch located on the front cover to the desired channel. The configuration of each channel is managed with DTC programming software. The programming software included with your Derringer allows you to assign frequencies, and set the deviation. The NOODLE ANTENNA The noodle antenna may be adjusted over the frequency range of 138 MHz to 174 MHz by adjusting the amount of wire that is folded back along side the end of the antenna. Use heatshrink tubing to hold the adjusted length. The total length may be calculated by the following formula. Length (inches) = 2950 / (Freq MHz) QUICK START 1 2 4 3 L L E C R U D L L E C O R P Example:
CH1: 150.000 CH2: 151.000 CH3: 152.000 Length (inches) = 2950/151 Total length = 19.5"
Center of operating frequency Length 2950 151 = 19.5 Loop 5 TIPS PULL UP ON SECTION INDICATED TO RELEASE LOCK AND REMOVE Note: This is a push-on, pull off locking connector. The connector will rotate 360 in the transmitter without disconnecting. Use extreme caution when connecting or removing the noodle antenna. To remove pull the noodle antenna straight out. 3 4 6 Battery 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 custom harness. 1 2 3 4 Try to locate the microphone in an area where pickup will be best and rubbing noise is least. Avoid the arms, legs, crotch, under the arms or waist area. Front torso mounting is ideal. Always provide a small amount of strain relief on the micro phone cable itself. This reduces the noise caused by the microphone cable and element being tugged and prevents cable damage. Secure the microphone cable to the body with medical adhesive tape in at least two spots, the final being about an inch below the element. Remember to leave a strain relief loop!
Completely cover the microphone element (facing outward) with an ordinary Band Aid. This provides a damped baffle for the microphone and a slick surface for clothing to rub on, and actually does not impact audio pickup level at all. CONNECTIONS ANTENNA (Male MMCX Connector) This connector accepts the noodle antenna. MICROPHONE The Derringer uses an internal electret microphone in addition to an external microphone Top View Microphone Multi Pin Connector Antenna Connector MULTI-PIN CONNECTOR (Male multi-pin connector) This connector mates with the 36 external microphone and also mates with the programming cable and optional vehicular power adaptor model VPA-2001. CHANNEL SELECT SWITCH (Rotary Switch) The channel select switch allows you to change transmit channels and is located on the front of the transmitter. It is a rotary switch which requires the use of the supplied screw-
driver to turn the switching mechanism. Select a transmit channel number by turning the rotary switch. The configuration of each channel is managed with DTC programming software. The programming software included with your Derringer allows you to assign frequencies, set the deviation, turn ON/OFF scrambler mode, and turn ON/OFF AGC. Front View Channel Select Switchable 7 SPECIFICATIONS Front Cover View Back Cover View 8 The Derringer measures just 2.1 by 1.1 by .4; it provides ten user programmable channels and audio scrambling. Automatic gain control is programmable by channel as well. The Derringer contains an internal microphone, which is automatically disabled if an external microphone is at-
tached. Power is provided by a convenient snap-on 9 Volt battery type connector. The back cover of the Derringer allows an individual to use a pencil to write down the frequency for each channel, as a quick reference guide. Note: Consider using a designator for your frequency, such as A or Blue. If you lose control of the transmitter you wont compromise your frequency. ITEM AGC Range Microphone SPECIFICATION 45dB Electret-fet internal or external Spurious & Harmonics
-50 dBc max non-harmonic, -45 dBc harmonic Operating Temp Range
-30 C to +70 C Operating Voltage Range 6.0 to 9.0 VDC Controls 10 channel recessed rotary switch Connectors RF output to antenna - MMCX Multi-pin Telocate (JT4MB -00) Pin 1 - Audio from external microphone Pin 2 - RS-232 serial input Pin 3 - RS232 serial output Pin 4 - external power Shield - ground return Power Sources External NOTE All specifications at 25 C and R/F measurements taken into 50 Ohms unless otherwise noted NTIA Compliant TIA/EIA- 102 - analog mode Dimensions 2.10" W x 1.1" H x .043" D SPECIFICATIONS 9 PROGRAMMING Introduction When you order a Derringer audio 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 dont attempt to change frequencies. This is often the best path for state and local agencies with limited frequencies 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 work with 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 the depot level. You will be able to program frequency, narrowband/wideband, AGC enabled/disabled and scrambler ON/OFF. As a practical matter, your Derringer transmitters frequencies will be dictated by the frequency of your receiver and/or repeater. In many cases, these devices are crystal controlled or have few channel options. TIP: Make sure that you program your transmitter to match the frequencies of your receiver, and test the components as a system prior to going into the field!
10 Installing DTC Universal Programming Software on your PC NOTE: Uninstall any previous versions by going to Add/
Remove Programs, clicking on DTC Universal Pro-
gramming, and clicking on uninstall. PROGRAMMING 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). 7 Click on Start, click on run. 8 Click on the Browse Button. 9 Click on your floppy drive. 10 Double click on the setup. 11 Follow the install wizard screens. Your programming software is installed 11 1 Check that an antenna (or non-radiating load) is connected to the Derringer MMCX antenna port. 2 Connect the DB9 end of the DTC programming cable to either the COM1 or COM2 port of the PC depending on port availability. Note: A 6-foot extension cable may be used between the PC and the DTC programming cable. 3 Plug the round 4-pin connector end of the DTC programming cable into the Derringer multi-I/O connector. Rotate the cable plug until the connector can be felt to align properly. At this point push the connector in and screw the retaining sleeve until snug 4 Check that the Derringer has a battery power installed with proper polarity orientation. 5 On the PC, mouse-click on Start, Programs, DTC Communications. 6 You will be prompted to select either COM1 or COM2. 7 Select the desired port as defined in Step 2. PROGRAMMING COM1 or COM2 Serial port of computer Connect the serial end of the programming cable here 12 PROGRAMMING 8 Mouse-click OK or cancel. 9 Now follow the instructions on the DTC Programming Application to begin the download and subsequent frequency reprogramming process. Select the channel number you want to edit Click Edit Chan Input the frequency using key pad on window or keyboard numbers Set scramble options Set AGC (Automatic Gain Contol) options When done, click OK-if no change is desired, click CANCEL When all programming edits have been completed, select UPLOAD to transfer your new settings to the Derringer. Your Derringer is now programmed. 10 After successfully using the DTC Programming Application, remove the round 4 pin multi-I/O connector from the Derringer by unscrewing the retaining sleeve on the connector barrel. Warning: Do not disconnect the programming cable until the programming operation (connect or Upload) is complete. 13 ACCESSORIES Part Number 4044738 Description Programming Cable Part Number 7011150 Description 3 Microphone DTC Universal Programming Software DTC part number 8002025 14 Part Number 4044377 Description 4 AA Battery Pack Part Number 4045319 Description Noodle Antenna Sales Representatives CONTACT US Director of Federal Sales John Morgan toll free (800) 233-8639 voice (603) 546-2122 cell (603) 320-3257 fax (603) 880-6965 jmorgan@dtccom.com Federal Sales Manager Marianne Caiazza toll free (800) 233-8639 voice (603) 546-2121 cell (603) 320-3256 fax (603) 880-6965 mcaiazza@dtccom.com Federal Sales Manager Wireless Video Products John Robey toll free (800) 233-8639 voice (703) 878-4375 fax (703) 680-7997 cell (571) 217-0599 pager (877) 468-1764 jrobey@dtccom.com National Sales Manager State & Local Agencies Michael Demos toll free (800) 233-8639 voice (603) 546-2120 cell (603) 320-3255 fax (603) 880-6965 mdemos@dtccom.corn Inside Sales Federal/International Steve Chisholm toll free (800) 233-8639 voice (603) 546-2124 fax (603) 880-6965 schisholm@dtccom.corn International Sales Manager Juan Alfonso voice (603) 546-2126 cell (978) 505-1745 fax (603) 880-6965 jalfonso@dtccom.com Surveillance Platforms IST toll free (888) 478-6599 voice (954) 755-0724 cell (954) 755-0817 teamist@aol.com Canada Dyplex Communications LId. Gary Sayer voice (416) 675-2002 tax (416) 675-1822 info@dyplex.com REGIONAL SALES MANAGERS Howard Rich toll free (888) 819-8570 voice (860) 626-8570 fax (860) 626-8571 NY, MA, CT, RI, PA, NJ, MD, DE hrich@dtccom.com Gary Nichols toll free (866) 794-2823 voice (765) 473-8917 fax (765) 473-8920 MN, WS, MI, IA, MO, IL, IN, OK, KY gnichols@dtccom.com Floyd Flowers voice (208) 667-5197 fax (208) 769-9387 WA, OR, ID, MT, ND, WY, UT, SD Joe Parkinson toll free (800) 952-4914 voice (909) 598-5110 fax (909) 598-3120 CA, AZ, NV, HI, AK jparkinson@dtccom.com Tim Scally toll free (877) 860-9096 voice (817) 368-9830 fax (817) 281-0453 TX, OK, AR, LA, NM, KS tscally@dtccom.com Frank Prioli toll free (800) 246-2610 voice (727) 392-4761 fax (727) 320-0509 FL, GA, AL, MS, TN, NC, SC fprioli@dtccom.com 15 486 Amherst Street Nashua, New Hampshire 03063 603-880-4411 486 Amherst Street Nashua, New Hampshire 03063 603-880-4411 www.dtccom.com www.dtccom.com