User manual
TeachLogic IRV-6655 VoiceLink III Infrared Wireless

User Manual for TeachLogic IRV-6655 VoiceLink III Infrared Wireless Microphone System

• Product category: Assistive Listening Systems TeachLogic
• Brand: TeachLogic
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for TeachLogic Assistive Listening Systems

Product description

• IR-255 VoiceLink III IR Receiver The TeachLogic IR-255 VoiceLink III Receiver is a two-channel infrared wireless microphone system that can be an addition to an existing sound system whether in a classroom, conference room, banquet room, or district courtroom. The VoiceLink III features a two-channel infrared wireless microphone receiver for simultaneous use of two wireless microphones. It features an AUX/comp input and front panel output for Lesson Capture and uses a line level output, balanced (phoenix 3-pin), or unbalanced (1/4″ phone) to connect to an existing sound system.
  • Supports two infrared wireless microphone receivers
  • Features a 3.5 mm front panel input for Aux/ Comp and a 3.5 mm front output for Lesson Capture
  • Includes a balanced line output 3-pin phoenix connector and unbalanced 1/4" phone output connector
  • Suitable for recording with an active board for internet podcasts
  • Two external sensor inputs for maximum coverage
• Sapphire Transmitter with Microphone and Lithium-Ion Battery TeachLogic's Sapphire Transmitter with Microphone and Lithium-Ion Battery is a lightweight classroom microphone and comes with a rechargeable lithium-ion battery. It can be worn with a lanyard or clipped directly to your neckline collar. It has high level output, reliable connectivity and great definition. With a built-in breath filter, the Sapphire can function as a pass-around hand microphone. With a tap on the power button, the microphone mutes for private conversation-tap again to restore to normal operation. The auxiliary input allows wireless playback of your iPod. A three-position slide switch provides selection of low, medium, or high microphone volume levels.
  • Long life lithium-ion battery
  • Rechargeable via micro USB cable
  • Battery level indicator, back light under power switch
  • Momentary mute button, backlight blinks in mute mode
  • Push "on/off" power
  • Channel A or B selectable
  • Three level microphone volume switch (low, medium, high)
  • Auxiliary input (3.5mm)
  • Low profile clip for mounting
  • Wear with a lanyard or directly to neckline collar
• BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters TeachLogic's BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters is a drop-in charger for two TeachLogic Sapphire transmitters and one IRH-35 or IRH-40 handheld micrphone/transmitter.
• Infrared Dome Sensor TeachLogic's Infrared Dome Sensor needs to be installed on the ceiling at least 3' from the video projector. It comes with a mounting/support bracket and 50' of plenum rated cable with RCA connector on each end. The ideal location for the dome sensor would be in the center of the ceiling. This will provide a clear signal path for the IR transmission from the transmitter to the dome sensor without obstruction. In addition, you will have 360° coverage and will minimize the transmission distance for more reliable performance. It collects the infrared transmission signal via 6 large detecting diodes. The sensor is connected to the mixer/amplifier via a plenum rated cable terminated with RCA connectors. The mixer/amplifier supplies the power to the sensor.
  • Easily installs on ceiling "T" bar with track bracket
  • 6 large receiving diodes for infrared reception

• Limited 5-Year Warranty

• Rechargeable Lithium-Ion Battery

• Limited 5-Year Warranty

• Limited 5-Year Warranty

• 50' 75Ω Dual-Shielded Plenum-Rated Cable

• Limited 5-Year Warranty

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Technical parameters

• IR-255 VoiceLink III IR Receiver

  Receiver Input	Infrared FM
  Modulation	FM Wide-band
  Reception Frequencies	Ch. A: 2.08 MHz Ch. B: 2.54 MHz
  IR Wavelength	850 nm
  Tone Signal	Ch. A: 32.768 KHz
  De-Emphasis	50 μs
  Frequency Response	40 Hz to 18 kHz, ±3 dB
  S/N Ratio	> 65 dB
  THD	< 1% @ 1 kHz
  Nominal Deviation	± 10 kHz
  Maximum Deviation	± 25 kHz
  Sensor Input	2 x RCA
  Connectivity	1,600 sq. ft (148.64 sq. m)
  Line Input	Computer/Aux 3.5 mm front or Dual RCA input rear panel
  Line Output	Balanced Line, Three Pin Phoenix connector Unbalanced Line, 1/4" Phone Lesson Capture with level control 3.5 mm front panel
  Power Supply	12 VDC / 0.6 A / 7.2 W
  Dimensions (W x H x D)	8.4 x 1.7 x 7.0" (21.3 x 4.3 x 17.8 cm)
  Weight	1.4 lb (0.6 kg)

• Sapphire Transmitter with Microphone and Lithium-Ion Battery

  Transmitter	Carrier: Infrared
  Transmission Frequency	2.08 MHz and 2.54 MHz
  Channel	Channel A or B, Field Switchable
  Transmitting Diodes	6
  Modulation	FM Wide-Band
  Pilot Tone	Frequency: 32.768 KHz
  Peak Deviation	± 25KHz
  Operating Range	60' (18.28 m) line of sight, 1,500 ft² (139.35 m²)
  Indicator Lights	Blue: full Purple: medium Red: low Flashing red: very low battery
  Battery	3.7V, 620mAh Lithium-ion
  Battery Life	Approximately 8-9 Hours
  External Power	Charger: DC +5V, Micro USB Connector
  Transmission Angle	180° Conical
  User Controls	Power switch (push): on/off Mute switch (push): on/off Microphone switch (3 position): + 6db, normal, - 3db Auxiliary volume/gain: increase, decrease Channel select: A or B, in battery compartment
  Auxiliary	External Input: 0.13" (3.5 mm) stereo line level
  Dimensions	3 x 1.25 x 0.75" (7.62 x 3.17 x 1.9 cm)
  Weight	1.4 oz (39.68 g)

  Box Dimensions (LxWxH)	5.0 x 3.5 x 1.5"

• BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters

  Compatibility	Compatible with TeachLogic Sapphire and IRH-35/40 Microphones/Transmitters
  Power	110V
  Charging Time	10-12 Hours
  Indicator Lights	Red: Charging Green: Charged
  Dimensions	7.75 x 2.75 x 3.75" (19.68 x 6.98 x 9.52 cm)
  Weight	1.75 lb (0.79 kg)

• Infrared Dome Sensor

  Operating Frequencies	2.3 mHz to 2.8 mHz
  IR Receiver	6 large lens diodes
  Coverage	360°
  Range	40-50' (12.19-15.24 m) line of sight, 2500 ft2 (232.25 m2)
  Mounting	Clip-on "T" bar bracket
  Connector	Female RCA
  Indicator Lights	Green LED for Power On
  Cable	75 ohm Dual-shielded Plenum-rated
  Cable Length	50' (15.24 m)
  Dimensions	4.62 x 1.37" (11.73 x 3.47 cm)
  Weight	0.46 lbs (0.2 kg)

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