T-2350-1Watt Audio Transmitter Pr oject 25 Digital & Analog Project Users Manual DTC COMMUNICATIONS INCORPORATED Draft
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 © 2004 DTC Communications, Inc. All rights reserved.
Table of Contents Manual Conventions Overview ............................................................................. 4 Connections ...................................................................... 5 NOTE Describes special issues you should be aware of while using a particular function. Quick Start Option 1 ..........................................................
Overview Channel Select Switch The T-2350 has 10 programmable channels. It is designed for body worn personal protection and evidence gathering missions. Its miniature size and rugged design insures safe concealment and long lasting performance. The time to half power with fresh AAA Alkaline batteries is 5 hours. The transmission is programmable for digital P25 clear, digital P25 encrypted, analog narrowband, or analog wideband operation.
ANTENNA (Female Lemo Connector) This connector accepts both the mic/antenna and the noodle antenna. MULTI-PIN CONNECTOR (Male multi-pin connector) This connector mates with an external microphone and is used in conjunction with the noodle antenna. This connector also mates with the programming cable. STATUS LED Once power is applied (after approximately 3 seconds), the Status LED will turn on (green), which indicates a successful self-test.
QUICK START Option1 NOTE: Do not operate the transmitter without an antenna installed. Using The Antenna/Mic Assembly NOTE: The channel being used must be programmed to use the antenna/mic 1 Install the antenna/mic into the antenna connector on the transmitter. NOTE: This is a push-on, push off locking connector. The connector will rotate 360° in the transmitter without disconnecting. Use extreme caution when connecting or removing the mic/antenna.(See illustration on page 12.
Using A Separate Micr ophone with the Microphone Noodle Antenna NOTE: The channel being used must be programmed to use the internal mic. 1 2 QUICK START Option 2 NOTE: Do not operate the transmitter without an antenna installed. Install the 36” remote microphone into the auxiliary (multi-pin) connector on the transmitter Install the noodle antenna into the antenna connector on the transmitter. Adjust length to center of operating frequencies.
miniSDTM Card miniSDTM Card miniSDTM Card The T-2350 uses an industry-standard miniSD™ card to make audio recordings. A 512 MB card, an SD to miniSD adapter, and an SD card reader are provided with a new T-2350. The audio is recorded in a Windows PCM waveform format (.wav file). Should the need to replace the card arise, they can be purchased at most major retailers in various densities from 32 Mb to 512 Mb. Higher densities may be available in the future.
Formatting Instructions for Desktop, Laptop, and Notebook computers. 1. Double click on ‘my computer’ to display your list of drives. 2. Insert the miniSD™ card into the miniSD™ to SD adaptor as shown. 3. Insert the adaptor into the SD card reader included with the transmitter. 4. Insert the card reader into an available USB port on your computer. The computer should acknowledge the installation by adding another drive icon in the drive list called ‘Removable Disk’ and followed by a drive letter. 5.
Recording Recording to a miniSDTM Card Each of the ten selected channels on the T-2350 can have the recording feature turned on or off independently from each other. This is accomplished by clicking the ‘recording on’ or ‘recording off’ button for each channel in the DTC Universal Programming Software (refer to Figure 3 page 19 for details).
Trouble Shooting 11
Tips Disconnecting the noodle antenna or the mic/antenna assembly. Additional Operational Notes: The T-2350 operates on six AAA batteries in series, which produce 9 VDC. A fresh set of batteries will operate the unit for over five hours when in high power mode. Battery reversal guards are integral to the battery compartment to eliminate the possibility of cell reversal. SLIDE BLACK SLEEVE UP NOTE: Always turn the unit off and remove used batteries when not in use.
Specifications Care should be taken when selecting the proper output power for the T-2350. Higher power will give the greatest range but will shorten the battery life and increase the chance of counter detection. DTC recommends using the lowest possible transmit power that can safely do the job. The power level must be selected in software. Each channel can be individually set to either high or low power.
Programming Introduction DTC has improved the flexibility in the programming options you have on the T-2350 audio transmitter. You can choose to use some, all, or none of this flexibility. When you order a T-2350 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 channels.
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 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).
Programming 1 2 3 4 Connect the antenna to the T-2350 transmitter. Install the programming cable into the connector on the T-2350. Plug the serial cable of the programming cable into the COM1 or COM2 port of your computer. From the Start Menu, Select Programs>DTC Communications>COM1 or COM2 on your computer. 5 6 The cycle power screen displays. Slide the power switch to the ON position and click OK. A message screen displays T-2350 downloading. 7 Click on the TX Channels Tab.
Programming Options Uploads new channel information to the unit. Click this button when all of the necessary configuration changes are complete Click this button to establish communication between unit and PC. Follow the on-screen instructions. Individual channel information See Page 18 Global transmit options.
Programming Options Repeats channel settings from previously set channel Figure 2 18 Click on the channel of interest, then click this button to edit individual channel settings. Refer to Page 19.
Programming Options Enter frequency in MHz Selects Modulations mode A C B Select RF Power D Sets encryption key to be associated with this channel Figure 3 C. Selects RF power operation when unit is in a low battery A. Selects AGC mode. In analog transmission condition. When the internal microprocessor detects that the modes, AGC Off is not available and will operate as battery voltage has dropped below 4.1 VDC, the transmit LOW when selected.
Programming Options Turns low battery Warnings On/Off E F Turns external status LED On/Off Edits encryptions codes and keys. See Page 21 Figure 4 E. Turns audio messages On/Off None - No recording status or warnings will be broadcast. Power Up - The status of the card will be broadcast on power up only, not during operation. Active Only - Record status and warnings will be broadcast during operation, but NOT on power up.
Encryption 1. To start entering KeyID/Key pairs, select the “Tx Options” tab , and click the Edit button under “Encryption_Keys”. 2. To enter a new pair, click “Add Item”. In the dialog box (see Figure A), enter a four-digit hexadecimal number for the KeyID and click “OK”. 3. The KeyID will be displayed at the top of the dialog box, and the program will then ask to enter the Encryption Key (16 hexadecimal digits).
Accessories Antennas The “noodle” antenna may be adjusted over the frequency range of 138 MHz to 225 MHz by adjusting the amount of wire that is folded back along side the end of the antenna. The total length may be calculated by the following formula.
TWO YEAR WARRANTY DTC Communications, Inc. (DTC) warrants its RF transmitting and receiving products to be free from defects in workmanship or material for a period of two (2) years from the date of shipment unless otherwise stated. The liability of DTC, Inc.
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880- 4411 www.dtccom.
