Headset Microphone Input

Input Type: Dynamic

Input Impedance: >= 1K

Mic Limiter Threshold: -2dBu ± 3dB

Mic Limiter Range: >= 15dB

Program Line Input

Input Impedance: >= 5K

Headset Output

Load Impedance: >= 8

Output Impedance: <= 25

Output Limiter Threshold: +5dBu ± 3dB

Maximum Output Level before Distortion: >= 17dBu

Partyline Output

Off Noise: < -74dBu

Output Impedance: >10K

Partyline Input

Crosstalk: < -60dB

Max level before Clipping: >= 12dBu

Frequency Response

Headset Mic – Partyline: 300 – 15kHz ± 3dB

Partyline – Headset Out: 300 – 15kHz ± 3dB

Max Distortion

Headset Mic – Partyline: <= 0.5%

Partyline – Headset Out: <= 0.2%

Noise

Headset Mic – Partyline: < -70dBu

Max Gain

Headset Mic – Partyline: 41dB ± 2dB

Partyline – Headset Out: >= 34dB

Power

Input Voltage Range: 20-30V DC

Input Current (Idle): <= 50mA

Input Current (Max): <=100mA

Internal Adjustments and Connections

Intercom Line: Seven terminal connector

Option Switches: Two DIP switches

Option Board Jumper: Two sets of options jumpers

Environmental

32 – 122°F (0 – 50°C)

Dimensions

4.5 x 4.6 1.75in (HxWxD)

(114 x 117 x 44mm)

Weight

0.46lbs (0.21kg)