Telex Audiocom US-2000 - INTERFACE SPECIFICATIONS; Balanced Intercom Channel Specs; Unbalanced Intercom Channel Specs; Program Input Specs

Unbalanced Intercom Channel:
Output Level: 200 mVrms ±10%
Input Impedance: 150W
Bridging Impedance: greater than 10,000W
Return Cancellation: -40 dB, 35 dB adjustable range
Call Signalling:
Send: 11 ±3 VDC
Receive: 4 VDC minimum
PROGRAM INPUT
Voltage Gain Range:
25 ±3 dB
Output Level:
1.0 Vrms nominal, 2.3 Vrms maximum
Input Impedance:
Balanced: 75 kW
Unbalanced: 38 kW
Common Mode Rejection:
Greater than 50 dB
PA OUTPUT
Output Level:
235 mVrms nominal
HEADPHONE AMPLIFIER
Voltage Gain:
30 ±3 dB
Maximum Output:
250 mW ±10% into 150W, 65 mW±10% into 600W
Frequency Response:
200 Hz to 8 kHz +1/-3db
Audible Alert:
2 kHz, at the headset
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