Connevans equipment for deaf people

Technical Specification - IR Classmate

General Specification of Wall Unit

Key lockable black powder finished steel cabinet with secured fixings
Secure equipment storage compartment
AC power requirements: (UK) 240Vac max 60VA
Internal transmitter charger with timed auto shut-off
Fuse: 20mm 630mA(T) anti-surge
Dimensions: 260 x 285 x 135mm
Weight: 5.5Kg

5channel mixer/amplifier Technical Specification

Controls:

No confusing master volume control so that ‘what you set is what you get’
Volume IR Channel A
Volume IR Channel B
Volume Multimedia (aux 1 & 2)
Volume TV/CD/Tape (aux 3 & 4)
Volume external Microphone
External microphone gain setting: High/Low
Tone control: variable slope +/-11dB at 100Hz and 10kHz

Connections:

External microphone input: 1/4" mono jack into 22K, unbalanced
Multimedia aux in 1, 2: RCA phono type into 10K min, unbalanced
TV/CD/Tape aux in 3, 4: RCA phono type into 10K min, unbalanced
Auxiliary outputs 5, 6: RCA phono type -15dBV
IR sensor 1, 2: satellite F type
Charge socket: 1.3mm DC to suit IR Classmate transmitters only
Speaker output: 4 x colour coded push terminals

Indicators:

Power on/charging status on internal front panel and outside of cabinet (red)
Signal received channel A and channel B (green)

Performance:

Amplifier power output 20 Watts rms into 4 ohms, 30 Watts rms into 2.7 ohms
Frequency response auxiliary channels: 50Hz-20kHz (-3dB)
Frequency response IR channels: 150Hz-12kHz (-3dB)
Frequency response ext mic channel: 50Hz-15kHz (-3dB)
Typical Signal to Noise and hum ratio: 75dB (CH A & CH B set at #6)

Receiver Technical Specification

Sub-carrier frequencies: 2.06MHz and 2.56MHz
Type: super heterodyne - crystal controlled
Modulation: FM
Squelch type: pilot tone (38kHz)
Image rejection: >40dB
Reception sensitivity: >25dBµV
Reception selectivity: +/- 40kHz

IR sensor Technical Specification

Dome sensor FOV: 360deg horizontal x 60deg vertical
Wall sensor FOV: 150deg horizontal x 60deg vertical
Connectors: satellite 'F' type
One dome sensor adequate for rectangular rooms with light coloured walls up to 80m²

Wall Speaker Technical Specification

Dual driver LF: 80mm, HF: 11mm dome
Rated Power: 30 Watts continuous
Frequency Response: 80Hz - 20kHz
Sensitivity 87dB/1W/1m
SPL @ 5 Watt Output: 92db @ 1 metre
Wall speaker dimensions: 192 x 130 x 115mm
Weight 1.3Kg inc fittings

Ceiling Speaker Technical Specification

Flat panel 'NXT' technology
Rated Power: 20 Watts continuous
Frequency Response: 80Hz - 20kHz
Sensitivity 75dB/1W/1m
SPL @ 10 Watt Output: 85db @ 1 metre
Ceiling speaker dimensions: will fit any ceiling tile of at least 400mm length
Weight 0.7Kg excl ceiling tile

IR Classmate Beltpack transmitter Technical Specification

Six emitters in the emitter pod flood the room with IR
Sub-carrier frequencies: 2.06MHz & 2.56MHz switchable
Modulation: FM
Audio distortion: <1.0% (+/-40kHz deviation@1kHz)
Collar/lavalier mic type: uni-directional electret
Mic gain adjustment: Max to -50dB
Battery type: 2-"AA" Ni-MH 2500mAh (2 x 1.2V)
Battery life: (230mA drain) >10 hours
Size: 89 x 66 x 39mm max inc beltclip
Weight (beltpack): 137g inc batteries
Weight (collar microphone) 148g inc cable
Weight (optional clip-on emitter): 57g inc cable

IR Classmate Handheld transmitter Technical Specification

Multiple emitters around the base and near the mic element flood the room with IR. An anti-roll ring around the mic head prevents rolling off a sloping lectern or school desk.
Sub-carrier frequencies: 2.06MHz & 2.56MHz switchable
Modulation: FM
Audio distortion: <1.0% (+/-15kHz deviation @1kHz)
Microphone element type: uni-directional dynamic
Battery type: 2-"AA" Ni-MH 2500mAh (2 x 1.2V)
Battery life: (230mA drain) >10 hours
Size: 255 x 58mm
Weight: 258g inc batteries

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