SPECIFICATIONS
GENERAL
Power Requirements:
Channel supplied: 24 VDC nominal (12 to 30 VDC), 65 to 150 mA
External supply: 12 to 15 VDC, 65 to 150 mA
Environmental Requirements:
Storage: -20
º
C to 80
º
C; 0% to 95% humidity, non-condensing
Operating: -15
º
C to 60
º
C; 0% to 95% humidity, non-condensing
Dimensions:
1.75" (44.5 mm) H x 8.25" (209.5 mm) W x 5.25" (133.4 mm) D
Weight:
1.3 pounds (0.59 kg)
INTERFACE REQUIREMENTS:
Headset:
50 to 200
W
dynamic microphone
150 to 600
W
headphones
Panel Microphone:
5 k
W
Electret microphone (-57 dB)
Balanced Intercom Channel:
Output Level: 1 Vrms nominal
Input Impedance: 300
W
Bridging Impedance: greater than 10,000
W
Return Cancellation: -40 dB, 35 dB adjustable range
Call Signalling:
Send: 20 kHz
±
100 Hz, 0.5 Vrms
±
10%
Receive: 20 kHz
±
800 Hz, 100 mVrms
Mic-Off Frequency:
Send: 24 kHz
±
300 Hz, 0.5 Vrms
±
10%
Detect: 24 kHz
±
800 Hz, 100 mVrms
Noise Contribution: less than -70 dB
Common Mode Rejection Ratio: greater than 50 dB
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