56 | en INTEGRUS | Digital Infra-red Language Distribution System
BOSCH Security Systems B.V.| February 2003
7.4 Receivers, Battery Packs and Charging Units
7.4.1 LBB 4540 Pocket Receivers
Physical Characteristics
N Dimensions (H x W x D) 155 x 45 x 30 mm (6.1 x 1.8 x 1.2 in)
N Weight excl. batteries/battery pack 75 g (0.16 lb)
N Weight incl. battery pack 125 g (27 lb)
N Finish Charcoal with silver
Electrical and Optical Characteristics
N IR irradiance level 4 mW/m2 per carrier
N Angle of half sensitivity +/-50G
N Headphone output level at 2.4V 450 mVrms (speech at maximum volume, 32 Ohm headphone)
N Headphone output frequency range 20 Hz to 20 kHz
N Headphone output impedance 32 Ohm to 2 kOhm
N Max. signal-to-noise ratio > 80 dB(A)
N Supply voltage 1.8 to 3.6 V, nominal 2.4 V
N Power consumption at 2.4 V 15 mA (speech at maximum volume, 32 Ohm headphone)
N Power consumption (standby) < 1 mA
7.4.2 LBB 4550/00 NiMH Battery Pack
Physical characteristics:
N Dimensions (H x W x D) 14 x 28 x 49 mm (5.5 x 11 x 19 in)
N Weight 50 g (11 lb)
Electrical characteristics:
N Voltage 2.4 V
N Capacity 1100 mAH
7.4.3 LBB 4560 Charging Units
Physical Characteristics
N Mounting LBB 4560/50: screws and plugs for wall mounting included
N Dimensions (H x W x D) LBB 4560/00: 230 x 690 x 530 mm (9 x 27 x 21 in)
LBB 4560/50: 130 x 680 x 520 mm (5 x 27 x 20 in)
N Weight excl. receivers LBB 4560/00: 15.5 kg (34 lbs)
LBB 4560/50: 11.2 kg (25 lbs)
N Weight incl. 56 receivers LBB 4560/00: 22.3 kg (49 lbs)
LBB 4560/50: 18.0 kg (40 lbs)
N Finish Charcoal with grey
Electrical Characteristics
N Mains voltage 90 to 260 V, 50 to 60 Hz
N Power consumption 270 W (56 receivers charging)
N Power consumption (standby) 7 W (no receivers in the charging unit)
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