Technical data

8.3 Transmission links
• From interpreter microphone to delegate headphone
• From interpreter microphone to interpreter headphone
• From auxiliary input to delegate headphone
• From auxiliary input to interpreter headphone
• From interpreter microphone to auxiliary output
General
Frequency response 125 Hz to 14 kHz *
Harmonic distortion <0.5%
Harmonic distortion at overload <1%
Crosstalk attenuation at 4 kHz >80 dB
Dynamic range >90 dB
8.4 Combined units
• Interpreter microphone with transmission link to interpreter
headphone
• Interpreter microphone with transmission link to
delegate headphone
• Interpreter microphone with transmission link to auxiliary out-
put
General
Typical frequency response 125 Hz (-8 dB) to 14 kHz
(-8 dB)
Front-to-random sensitivity index >4.6 dB
Rated equivalent sound pressure
level due to inherent noise <25 dB (A)
Total harmonic distortion at overload <1%
Crosstalk attenuation >80 dB
8.5 System electrical and electro-acoustic characteristics
General
Nominal input level 85 dB SPL
Overload input level 110 dB SPL
Automatic gain reduction at 30 dB (interpretation
channels, 18 dB)
Overload input level (delegate loudspeaker
channel)
(not for PA-floor output)
Operator master gain control 15 x 1 dB and OFF (Mute)
8.6 System environmental conditions
General
Working conditions Fixed/stationary/transportable
Temperature range
- transport -20 to +55 °C (-4 to 131 °F)
- operating +5 to +45 °C (41 to 113 °F)
Relative humidity 95% max.
Safety According to EN 60065, and
according to CAN/CSA-E65-94
(C and US) and UL
6500-96 for LBB 4100/xxD,
LBB 4106/00D
EMC emission According to harmonized
standard EN 55013 (1988)
and FCC Rules (Part 15)
complying with the limits for
a class A digital device
EMC immunity According to harmonized
standard EN 55020 (1987)
EMC approvals Affixed with the CE mark. EC
directive 89/336 EEC
ESD According to IEC 801-2;
contact 4 kV, air 8 kV. Fast
transients to the mains
and data lines according to
IEC 801-4
Additional immunity tests According to IEC 801-3.
Field strength 3 V/m in the
frequency range 80 - 1000
MHz. Severity level 3: not
affecting normal operation
Mains harmonics Prepared to EN 60555-2
Class A
Other legal requirements No cadmium used other than
in the Nickel-Cadmium battery
housed in the central unit
Shock resistance According to IEC 68.2.29 Eb
Vibration resistance According to IEC 68.2.6 Fc,
procedure A
DCN Next Generation Interpretation System Data Brochure | Technical Data |25