Audiocom NFL-2002 Manual de Instruções - Página 4
Procurar online ou descarregar pdf Manual de Instruções para Sistema de intercomunicação Audiocom NFL-2002. Audiocom NFL-2002 6 páginas. Beltpacks
Imprimir páginaFigure 1. NFL-2002 Connections and Controls
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SPECIFICATIONS
GENERAL:
Power Requirements:
Channel supplied: 24 VDC nominal, 40 to 100 mA
Local-power: 24 VDC nominal (21 to 30 VDC), 40 to 100 mA
Environmental Requirements:
Storage:
-20ºC to 80ºC; 0% to 95% humidity, non-condensing
Operating:
-15ºC to 60ºC; 0% to 95% humidity, non-condensing
Dimensions:
5.0" (127 mm) H x 3.5" (88.9 mm) W x 1.8" (45.7 mm) D
Weight:
1.5 pounds (0.68 kg)
INTERFACE REQUIREMENTS:
Headset:
1000 - 3000 ohm electret microphone
50 - 200 ohm dynamic microphone
150 to 600 ohm headphones
Input Level:
4 mV
(nominal)
RMS
Balanced Intercom Channel:
Output Level: 1 V
nominal
RMS
Terminating Impedance: 300 ohm ±5%
Bridging Impedance: greater than 10,000 ohm
Call Signalling:
Send: 20 kHz ±100 Hz, 500 mV
Receive: 20 kHz ±800 Hz, 100 mV
Mic-Off Frequency:
Detect: 24 kHz ±800 Hz, 100 mV
Noise Contribution: less than -60 dBu on the line
Total Harmonic Distotion: less than 1% at channel output for normal input
Unbalanced Intercom Channel:
Output Level: 775mV
±10%
RMS
Terminating Impedance: 200 ohm ±5%
Bridging Impedance: greater than 10,000 ohm
Call Signalling:
Send: 12 ±3 VDC on the line
Receive: 4 - 15 VDC from the line
Total Harmonic Distotion: less than 1% at channel output for normal input
HEADPHONE AMPLIFIER:
Maximum Output:
4.5 ±10% V
into 150Ω headset
RMS
Frequency Response:
200 Hz to 8 kHz ±2 dB
Audible Alert:
1 kHz, at the headset
Total Harmonic Distortion:
Less than 1% at less than 3.5 V
RMS
Sidetone:
20 ±3 dB minimum range, adjustable
±10%
RMS
RMS
RMS
into 150Ω headset
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