Environmental Conditions; Safety - Bosch DCN Next Generation Installation & User's Instructions

DCN Next Generation | Installation and User Instructions | System Design and Planning
7.1.3 Combined devices from input to
output
• Delegate microphone with transmission link to
interpreter headphones
• Delegate microphone with transmission link to
delegate headphones
• Delegate microphone with transmission link to
auxiliary output
table 7.3: Combined devices from input to output
Typical frequency response:
125 Hz to 20 kHz
Front-to-random sensitivity index:
> 4.6 dB
Rated equivalent sound pressure level due to inherent noise:
< 25 dB(A)
Total harmonic distortion @ overload:
< 1%
Crosstalk attenuation:
> 80 dB
7.2

Environmental conditions

table 7.4: Environmental conditions
Working conditions:
Fixed, stationary, transportable
Temperature range:
• -20 to +70 °C (transport)
• +5 to +45 °C (operation)
• For EPS and contribution devices with an LCD, the maximum temperature is +40 °C.
Relative humidity:
< 95%
7.3

Safety

According Low Voltage Directive 73/23/EEC amended
by Directive 93/68 EEC.
• For European countries: according EN60065.
Marking: CE
• For international countries: IEC 60065 according
CB-Scheme.
• For North America:
• USA: ANSI/UL 60065
• Canada: CAN/CSA no. 60065
• Marking c-CSA-us.
Bosch Security Systems | 2007-02 | 9922 141 70525
• Interpreter microphone with transmission link to
interpreter headphones
• Interpreter microphone with transmission link to
delegate headphones
• Interpreter microphone with transmission link to
auxiliary output
en | 35