Two-Wire Intercom Beltpacks

Crosstalk

-60

Power Requirements

Max Operating Current (unbalanced): 50 mA; Max Operating Current (balanced): 55 mA; Channel Supplied: 18–33 VDC; Local Power: 18-33 VDC

Operating Temperature

32º F to 131º F; 0º C to 55

Storage Temperature

-4º F to 158º F; -20º C to 70

Storage Humidity

15% to 90%, non-condensing

Operating Humidity

5% to 95%, non-condensing

Headset Jack

50 to 200 Ω (dynamic); 1k to 13k Ω (electret); Headphones: 50 to 600 Ω

Balanced Intercom Channel

Output Level: 0.0 dBu nominal; Noise Contribution: <-60 dBu; Total Harmonic Distortion: <1.0%

Terminating Impedance

Balanced: 300 Ω; Bridging Impedance: >10k Ω

Call Signaling

Send: 20 kHz; Receive: 20 kHz

Mic Off Frequency

Send: 24 kHz; Receive: 24 kHz

Unbalanced Intercom Channel

Output Level: 0.0 dBu nominal; Terminating Impedance: 200 Ω; Noise Contribution: <-60 dBu; Total Harmonic Distortion: <1.0%

Bridging Impedance

Unbalanced: >10k Ω

Call Signaling

Send: DC Only; Receive: DC Only; Total Harmonic Distortion: <1.0%

Headphone Amplifier

Maximum Output: >140 mW into 150 Ω load; Frequency Response: 200Hz - 8 kHz ±2 dB; Audible Alert: 1 kHz; Total Harmonic Distortion: <1.0%; Sidetone: >20 dB dynamic range