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Related Manuals for LightSpeed Technologies 780iR
Summary of Contents for LightSpeed Technologies 780iR
- Page 1 LES 780iR INFRARED CLASSROOM AMPLIFICATION SYSTEM U S E R ’ S M A N U A L...
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Page 2: Table Of Contents
Table of Contents LES 780iR Infrared Classroom Amplification System: Overview LES 780iR System Components System Installation: 1. Unpacking 2. Location 3. Speaker(s) 4. Receiver/Amplifier 5. IR Sensor Placement a. Suspended Ceiling Mount b. Wall or Solid Ceiling Mount 6. LightMic Microphone/Transmitter 7. -
Page 3: Les 780Ir Infrared Classroom Amplification System: Overview
In addition, up to six speakers can be con- nected to the LES 780iR, ensuring that no matter the size or shape of the room, every child hears every word—every time. -
Page 4: Lightmic ™ Microphone/Transmitter
LES 780iR Classroom Amplification System Components: LES 780iR Receiver/Amplifier LT-70 LightMic ™ Microphone/Transmitter SR-70 Infrared Sensor Cable SR-70 Infrared Sensor Power Supply RCA Cables Speaker(s) Various speakers are available and are typically shipped in a separate box with plenum-rated speaker wire. -
Page 5: System Installation
• Return to the LES 780iR manual to complete the set up of your system. 4. Receiver/Amplifier • Place the LES 780iR on a flat surface like a bookcase or countertop. • Ensure that the A VOLUME and B VOLUME knobs are... -
Page 6: Ir Sensor Placement
5. IR Sensor Placement Sensor location is very important for optimum performance of the LES 780iR Classroom Amplification System. Place the sensor in a temporary location and test the system (Step 7 below) before choosing a permanent location. Test the mic at the farthest points from the sensor to confirm... -
Page 7: Lightmic Microphone/Transmitter
6. LightMic Microphone/ Transmitter For testing purposes, basic instructions for wearing and operating the LightMic are provided below. For more detailed instructions, refer to page 11. • Clip the LightMic to the lavaliere. • Place the LightMic and lavaliere cord around your neck and adjust cord length so the top of the LightMic sits just below your collar bone. -
Page 8: Front Panel Controls
Front Panel Controls 1. POWER Switch/POWER Indicator: This switch is used to turn the LES 780iR ON (switch up), or OFF (switch down). When the POWER switch is in the ON position, the red POWER light will glow. 2. IR 1/IR 2: The IR indicators (IR 1/IR 2) will glow red when the corresponding microphone is turned on. -
Page 9: Rear Panel Controls
0. SENSOR INPUTS: The cable from the IR sensor connects to any of these six inputs. Up to six IR sensors can be connected to the LES 780iR for use in large or odd shape classrooms. 1. SENSOR SHORT: If there is a short in one of the sensor cables, this LED glows as a warning signal. -
Page 10: System Operation: Powering The Les 780Ir
(fully counter-clockwise). Individual speaker switches are in the on/up position. The LES 780iR is connected to a power source. Use the en closed AC/DC power adaptor to plug into a standard electrical outlet and connect the other end to the DC POWER jack on the back panel. -
Page 11: Lightmic Microphone/Transmitter
Use the 3.5 mm MIC jack for the optional TK-250 headset microphone. 5. Charger Connector (CHARGER): Use the jack labeled CHARGER to connect the charging cable from the LES 780iR to the LightMic for daily battery recharging. Switch Select Switch... -
Page 12: Charging The Lightmic
1. Ensure the LightMic is turned OFF. The LES 780iR must be connected to AC power in order to charge the LightMic. 2. The LightMic’s rechargeable batteries are factory installed. Plug one end of the charging cable firmly into the jack... -
Page 13: Operating The Lightmic
Adjusting Volume Volume is set by adjusting the volume control on the LES 780iR. a. Ensure the LES 780iR is switched ON. b. Ensure the LightMic is switched ON and the triangle-shaped LED on the front of the LightMic is glowing red. The IR 1... -
Page 14: Optional Hm-70 Handheld Microphone/Transmitter
HM-70 is powered on and glows green when charging. 4. Charger: Use this jack to connect the slide to open charging cable from the 780iR to the HM-70 for daily battery recharging. [ caution! ] Do not attempt to charge alkaline batteries̶they can overheat and... -
Page 15: Hm-70 Operating Instructions Charging
Connect one end of the charging cable to one of the MIC CHARGE jacks on the back panel of the LES 780iR. Connect the other end of the charging cable to the charging jack on the side of the HM-70. -
Page 16: Input From External Audio Equipment
If the audio source produces a stereo signal, a stereo to mono adapter is required (Part # AC-STM-ADPT). 2. With the LES 780iR on, adjust the cor- responding volume knob on the front to a desired level. Output to Personal FM Transmitter 1. -
Page 17: Tips On Using Classroom Amplification
Tips on Using Classroom Amplification These helpful suggestions are provided to maximize the successful use of your new LES 780iR Infrared Classroom Amplification System. • Speak in a natural voice. A normal conversational speech level will provide an adequate signal. It is not necessary to increase the intensity of your voice—the... -
Page 18: Overall System Specifications
Overall System Specifications: Carrier Frequencies (IR) Frequency Stability Maximum Deviation Dynamic Range Signal-to-Noise Ratio Frequency Response Receiver Specifications: Receiver Type Receiver Sensitivity Image and Spurious Rejection Reception Selectivity Squelching Amplifier Specifications: Power Output (System Total) Total Harmonic Distortion Speaker Load Impedance Power Supply (UL Listed) Dimensions Weight... -
Page 19: Troubleshooting Guide
If so, select a different channel for one of the LightMics. • Keep the LES 780iR at least 6 feet away from computers. Low Volume: • Check volume level on the LES 780iR and adjust as necessary. -
Page 20: Individual Components And Optional Accessories
Optional Noise-canceling Headset Microphone to be used with LT-70 RCA Cable Kit for input of audio into the LES 780iR Audio Patch Cable (3.5 mm mono to 3.5 mm mono) Audio Patch Cable (2.5 mm mono to 3.5 mm mono) Contact LightSPEED at 800.732.8999 for... -
Page 21: User Notes
User Notes Record your system serial numbers and purchase information. This is helpful when ordering additional components, accessories, and/or warranty service. standard components LES 780iR LT-70 LightMic SR-70 IR Sensor Speakers Power Supply RCA Cables optional component HM-70 Handheld Microphone... - Page 22 L I G H T S P E E D T E C H N O L O G I E S , I N C . 1 1 5 0 9 S W H E R M A N R D T U A L A T I N , O R 9 7 0 6 2 8 0 0 .
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