Telex BP-2002, BP-1002 operating instructions General, Interface Requirements

SPECIFICATIONS

GENERAL:

Power Requirements:

Channel supplied: 24 VDC nominal, 45 to 70 mA

Local-power: (BP-2000 only) 24 VDC nominal (18 to 30 VDC), 45 to 70 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:

50 to 200 ohm dynamic microphone

150 to 600 ohm headphones

Balanced Intercom Channel:

Output Level: 1 Vrms nominal

Input Impedance: 300 ohm ±5%

Bridging Impedance: greater than 10,000 ohm Call Signalling:

Send: 20 kHz ±100 Hz, 0.5 Vrms ±10%

Receive: 20 kHz ±800 Hz, 100 mVrms

Mic-Off Frequency:

Detect: 24 kHz ±800 Hz, 100 mVrms

Noise Contribution: less than -60 dB on the line

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