DTC Communications T2001S Surveillance Transmitter for Law Enforcement User Manual

DTC Communications Inc. Surveillance Transmitter for Law Enforcement Users Manual

Users Manual

H25T2001ST2001S Operating Instructions page 1©2000 DTC Communications, Inc.DTC COMMUNICATIONS, INC.Operating Instructions for the T2001-SPersonal Protection TransmitterVersion 1.0OP19200XX
H25T2001ST2001S Operating Instructions page 2©2000 DTC Communications, Inc.MODEL T-2001S TRANSMITTEROPERATING INSTRUCTIONSContents1 T-2001S Transmitter6 Duracell AAA Batteries1 MA-70-5 Microphone-Antenna Assy.1 Data Sheet1 Operating InstructionsDescriptionThe T2001S is a synthesized VHF 1Watt audio transmitter, compliant with the NTIAspecification for Narrowband operation. Via a simple PC programming interface, asmany as 10 channels over the entire 150 to 174 MHz band may be installed in memory.This transmitter is miniaturized and ruggedized, being designed for body worn personalprotection and evidence gathering missions. The time to half power with AAA Alkalinebatteries is greater than 4 hours. The transmission is a narrow-band FM signal, of 2.5 kHzdeviation. The T2001-S transmission is duplexed on the microphone cable; meaning themicrophone is the antenna. The audio circuitry is built around a DTC proprietary gaincontrol (AGC) circuit, and a high-quality Knowles microphone.Operation1. ControlsON – GREENOFF - REDChannel Select - 10 Position Rotary2. Programmed FeaturesChannel Frequency - 1 thru 10AGC - ON / OFF3. Connectors Microphone/AntennaProgramming Connector
H25T2001ST2001S Operating Instructions page 3©2000 DTC Communications, Inc.4. DeploymentFor longest transmission range, use with microphone-antenna fully extended in avertical orientation.BatteriesThe T-2000-S operates on six AAA batteries in series, which produce 9 VDC. A fresh setof batteries will operate the unit for over four hours. Battery reversal guards are integralto the battery compartment to eliminate the possibility of cell reversal.Verify that the microphone antenna is inserted and the unit is switched off (RED DOT).To install the batteries:1. Lay the unit down, battery side up and slide the battery door to the right.2. Observing polarity, install the six alkaline AAA cells.3. Close the battery door by sliding the door to the left.NOTE: Do not operate the transmitter without the microphone antenna attachedTransmitter Operation1. Slide the battery door to the right and install six fresh AAA batteries, being careful toobserve polarity. Replace the door by sliding it to the left. Verify that the powerswitch located on the top control surface is in the RED “off” position. Attach theMicrophone to the connector on the top of the unit. This is a push-on pull-off locking-type connector. Connect the microphone antenna to the transmitter by simply pushingit into the top connector.This is a push-on push-off locking connector. The connector will rotate 360 degrees in thetransmitter without unmating. Use extreme caution when connecting or removing themicrophone antenna. To remove slide back the sleeve, and pull straight out.2. Set the T-2001 to the proper channel using the recessed rotary switch located on thefront cover.3. Turn the unit “on” by sliding the switch to the GREEN position.4. Always turn the unit off and remove used batteries when not in use. IT ISIMPERATIVE TO DISCARD partially used batteries, as their remaining life is notvery predictable. ALWAYS start an operation with a fresh battery.
H25T2001ST2001S Operating Instructions page 4©2000 DTC Communications, Inc.Audio Circuit and Body Mounting TipsThe audio circuit is based on a DTC proprietary automatic gain control (AGC) hybridcircuit and an external, high-sensitivity Knowles electret microphone. Excellent audioquality is achieved in a wide variety of background noise environments.All body-worn transmitters are susceptible to “clothing noise”. Reducing this rubbingeffect is accomplished in a variety of ways. After securing the transmitter to the bodywith a secure mounting method such as an ACE bandage or custom harness:1. Try to locate the microphone in an area that pickup will be best and rubbing noise isleast. Avoid the arms, legs, crotch or under the arms or the waist area. Front torsomounting is ideal.2. Always provide a small amount of strain relief on the microphone cable itself. Thisreduces the noise caused by the microphone cable and element being tugged andprevents cable damage.3. Secure the microphone cable to the body with medical adhesive tape in at least twospots, the final being about an inch below the element. Remember to leave a strainrelief loop!4. Completely cover the microphone element (facing outward) with an ordinary BandAid™ . This provides a damped baffle for the microphone and a slick surface forclothing to rub on, and actually does not impact audio pickup level at all.

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