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Infra-red Receivers, Charging Units and Accessories | 29
Infra-red Receivers, Charging Units and Accessories
LBB 4540 Pocket Receivers
Features
X Specially-designed IC for maximum performance and a
long battery life time
X Recharging electronics integrated in the chip, ensuring
optimum charging performance
X 2-digit LCD display with battery and reception status
indication
X Number of available channels is always the same as the
number of channels in use by the system, eliminating the
need to scroll through unused channels
Introduction
These ergonomically designed receivers incorporate the
latest electronics technology - including a specially designed
IC - to ensure maximum performance and a long battery
lifetime. The receivers can be used for both language and
music distribution.
Functions
•
Audio signal automatically muted when signal is too low,
ensuring that the user receives only high quality audio
• Can be used with disposable batteries (2x AA alkaline
batteries, not included) or environmentally-friendly NiMH
rechargeable battery pack LBB 4550/00, (not included)
• No power used when headphone is disconnected
• Clip for easy wearing
• Measurement mode for easy checking of radiator
coverage
• Attractive and stylish design
• Up to 200 hours operation with alkaline batteries
• Up to 75 hours operation with battery pack
• Recharges from empty to full capacity within 1 hour and
45 minutes
Controls and Indicators
• 2-digit LCD display with channel number, battery and
reception status indication
• On/off button
• Volume control slide adjuster
• Channel selection up/down buttons
• Charging indicator LED
Interconnections
• 3.5 mm (0.14 in) stereo jack output socket for
headphones
• Battery contacts for use with AA alkaline batteries
• Connector for use with LBB 4550/00 battery packs
• Charging contacts on the left-hand side of the receiver for
compatibility with LBB 4560 charging units*
* LBB 3406, 3407, 3408 and 3409 charging units are
electronically incompatible with LBB 4540 Pocket Receivers,
and can actually damage them. The charging contacts on
LBB 4540 Pocket Receivers and LBB 4560 Charging Units
have deliberately been located on the left-hand side, which
is a different position than found on the mentioned charging
units. The battery pack and disposable batteries are not
included.
Technical Specifications
Electrical
IR irradiance level
4mW/m
2
per carrier
Angle of half sensitivity ± 50°
Headphone output level at 2.4 V 450 mVrms (speech at maximum
volume, 32 ohm headphone)
Headphone output frequency
range
20 Hz to 20 kHz
Headphone output impedance 32 ohm to 2 kohm
Max. signal-to-noise ratio 80 dB(A)
Supply voltage 1.8 to 3.6 V, nominal 2.4 V
Power consumption at 2.4 V (bat-
tery voltage)
15 mA (speech at maximum volume,
32 ohm headphone)
Power consumption (standby) < 1 mA
Mechanical
Dimensions (H x W x D) 155x45x30mm
(6.1 x 1.8 x 1.2 in)
Weight
excluding battery
including battery
75 g (0.16 lb)
125 g (0.27 lb)
Color charcoal with silver
Ordering Information
LBB 4540/04 Pocket Receiver
4-channel
LBB4540/04
LBB 4540/08 Pocket Receivers
8-channel
LBB4540/08
LBB 4540/32 Pocket Receiver
32-channel
LBB4540/32
- Bosch Integrus 1
- Data Brochure 1
- Table of Contents 3
- Introduction 5
- LBB 4511/00 11
- LBB 4512/00 11
- LBB 3410/05 11
- Bosch Security Systems B.V 12
- System Specification 19
- 16 20
- INT-TX Transmitters 21
- Accessories 22
- INT-TXK Transmitter Upgrade 23
- X Eight symmetrical inputs 24
- X Easy to carry and store 25
- X Shaped interior 25
- X Holds up to two 19” units 25
- Infra-red Radiators 27
- X Holds one radiator 29
- LBC 1259/00 Universal 30
- Floorstand 30
- Infra-red Radiators 31
- Ordering Information 31
- LBB 4540 Pocket Receivers 33
- LBB 4560 Charging Units 35
- X Shaped foam interior 36
- X Holds up to 100 receivers 36
- LBB 3441/10 Under the Chin 37
- Headphones 37
- LBB 3442/00 Single Earphone 37
- X Replaceable ear pads 38
- LBB 3015/04 High Quality 39
- Dynamic Headphones 39
- HDP-ILN Induction Loop 39
- Neckband 39
- 36 40
- LBB 3222/04 Interpreter Desk 41
- X Durable and dynamic 42
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