ASL INTERCOM BS 181 Manuale d'uso - Pagina 5

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6.0

REAR PANEL CONTROLS & CONNECTORS

INTERCOM LINE connectors

These two XLR-3 connectors are for connecting

the user stations, via standard microphone cable.

Pin assignments:

Pin 1: 0 V / ground shield

Pin 2: +30 V power wire

Pin 3: audio wire

FUSE holder

A fuse protects the BS 181 against severe internal

damage in case of malfunction in the power

7.0 TECHNICAL SPECIFICATIONS BS 181

Switch Mode Power Supply

mains voltage range: 100 -240 V AC, 50-60 Hz

DC output voltage: +30 V DC (+/-5%)

max. output power: 45 watts

Dimensions & Weight

Width: 176 mm / Height: 42 mm

Depth: 139 mm / Weight: 900 grams

PAGE 5

User Manual BS 181 / May 2013 © ASL Intercom BV

section. Disconnected the power cord before

replacing the fuse. Place the correct fuse in the

holder: T 1250 mA (for all mains voltages 100 –

240V AC)

An extra internal fuse is located on the printed

circuit board. Replace this fuse with a 4A type only.

MAINS INLET

IEC Mains connector. For correct wiring and

operation refer to section 4.0.

System Specifications

dynamic range: 80 dB (1 kHz, THD < 1%)

frequency response: 200 Hz – 15 kHz (-3 dB)

call signal (send): 2.8 mA

call signal threshold (receive): +2.4 V DC

operating voltage: 24 - 32 V DC

line impedance: 350 Ω (1kHz), 2.2 kΩ (DC)

audio level: nom. -18 dBu, max. 0 dBu

0 dBu defined as 775 mV into open circuit.

ASL reserves the right to alter specifications

without prior notice