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Input Type:

Dynamic

Input Impedance:

>= 1K

Mic Limiter Threshold:

-2dBu ± 3dB

Mic Limiter Range:

>= 15dB

Program Line Input

Maximum Level before Clipping:

>= 20dBu

Input Impedance:

>= 5K

Headset Output

Load Impedance:

>= 8

Output Impedance:

<= 25

Output Limiter Threshold:

+5dBu ± 3dB

Maximum Output Level before Distortion:

>= 17dBu

Speaker Output

Load Impedance:

>= 4

Max Output Level before 1% Distortion:

20dBu ± 2dBu

Partyline Output

Off Noise:

< -74dBu

Output Impedance:

>10K

Partyline Input

Crosstalk:

< -60dB

Max level before Clipping :

>= 12dBu

Sidetone Null Capability:

> 25dB

Frequency Response

Panel Mic - Partyline:

300 - 16kHz ± 3dB

Mic – Partyline:

300 - 15kHz ± 3dB

Program Input – Headset Out:

200 – 18kHz ± 3dB

Program Input – Speaker Out: 

200 – 18kHz ± 3dB

Partyline- Headset Out: 

200 – 18kHz ± 3dB

Partyline- Speaker Out:

200 – 18kHz ± 3dB

Max Distortion

Panel Mic - Partyline:

<= 0.5%

Headset Mic – Partyline: 

<= 0.5%

Program Input – Headset Out: 

<= 0.2%

Program Input – Speaker Out: 

<= 0.5%

Partyline- Headset Out:

<= 0.2%

Partyline – Speaker Out: 

<= 0.5%

Noise

Panel Mic - Partyline:

< -65dBu

Headset Mic – Partyline:

< -70dBu

Program Input – Headset Out:

< -60dBu

Program Input – Speaker Out:

< -60dBu

Partyline – Headset Out:

< -50dBu

Partyline- Speaker Out:

< -50dBu

Max Gain

Panel Mic - Partyline:

>= 37dB

Headset Mic – Partyline:

41dB ± 2dB

Program Input – Headset Out:

>= 18dB

Program Input – Speaker Out：

>= 24dB

Partyline- Headset Out:

>= 34dB

Partyline- Speaker Out:

>= 40dB

Power

Input Voltage Range:

20-30 VDC

Input Current (Idle):

<= 90mA

Input Current (Max):

<=110mA

Internal Adjustments and Connections

Intercom:

Line Five terminal connector

Program Input:

Three terminal connector

Option Switches: 

Three DIP switches

Call Signal Jumper3:

Three sets of options jumpers

Call Alert Tone Level Control:

Level adjustment control

Environmental

32° – 122°F (0° – 50°C)

Dimensions

4.5 x 8.25 x 1.75in (HxWxD)

(114 x 210 x 44mm)

Weight

0.99lb (0.45kg)