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PRA-EOL

Bosch PRA-EOL End-of-line device, Device for loudspeaker line integrity supervision in Public Address and Voice Alarm applications, Reliable solution for (long) loudspeaker lines, Fault detection in amplifier without additional wiring, Low level, high frequency pilot tone, IP30.

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Bosch

 

Key Features

* Compact device for loudspeaker end‑of‑line supervision

* Reliable solution for (long) loudspeaker lines

* Fault detection in amplifier without additional wiring

* Low level, high frequency pilot tone

Electrical

 

Control

 

Pilot tone detection

Frequency

Level

 

25.5 kHz

1.5 - 3 VRMS

 

Amplifier load

< 100 mW

 

Control

 

Loudspeaker cable

Maximum length

Maximum capacitance

Operating temperature

 

1000 m

80 nF

-20 to +50 °C (-4 to 122 °F)

 

Maximum input voltage

100 VRMS

 

Fault detection

Line shorted, line interrupted

 

Fault reporting

By amplifier

 

Reliability

 

MTBF (extrapolated from calculated MTBF of PRA-AD608)

5.000.000 h

 

Environmental

 

Climatic conditions

 

Temperature Operating

Storage and transport

-5 to +50 °C (23 to 122 °F)

-30 to +70 °C (-22 to 158 °F)

 

Humidity (non condensing)

5 to 95 %

 

Air pressure (operating)

560 to 1070 hPa

 

Altitude (operating)

-500 to +5000 m (-1640 to 16404 ft)

 

Climatic conditions       

 

Vibration (operating)

Amplitude

Acceleration

 

< 0.7 mm

< 2 G

Bump (transport)

< 10 G

Mechanical

Enclosure

Dimensions (WxHxD)

Board shape

Box shape

 

78 x 60 x 16 mm (3.1 x 2.4 x 0.6 in)

45 x 60 x 18 mm (1.8 x 2.4 x 0.7 in)

Ingress protection

IP30

Case

Material

Color

 

Plastic

RAL3000

Weight

25 g (0.055 lb)