AB-120

Technical Specifications

Headset Microphone Input
Input Type: Dynamic, Electret
Input Impedance: 1K Ohms
Max Input Level: -60 dBu to -40 dBu switchable

Headset Output
Load Impedance: >= 4 Ohms
Output Impedance: 47 Ohms
Output Limiter Threshold: -4 dBu, + 3 dB
Max Output Level Before Distortion: -4 dBu

Party-line Output
Off Noise: <-80 dBu
Output Impedance: >10K Ohms
Maximum Output: -4 dBu

Party-line Input
Maximum Level Before Clipping: +3 dBu
Sidetone Null Capability: >25 dB

Frequency Response
Dynamic Mic - Party-line: 40Hz - 22KHz, + 3 dB
Dynamic Mic - Line Out: 20Hz - 22KHz, + 3 dB
Dynamic Mic - 4-Wire Out: 100Hz - 22KHz, + 3 dB
IFB Input - Headset Out: 100Hz - 22KHz, + 3 dB
Party-line - Headset Out: 150Hz - 22KHz, + 3 dB

Max Distortion
Dynamic Mic - Party-line: <0.1%
Dynamic Mic - Line Out: <0.05%
IFB Input - Headset Out: <0.5%
Party-Line - Headset Out: <0.1%

Noise
Dynamic Mic - Party-line: <-75 dBu
Dynamic Mic - Line Out: <-85 dBu
IFB Input - Headset Out: <-65 dBu
Party-Line - Headset Out: <-65 dBu

Max Gain
Dynamic Mic - Party-line: 41 dB + 3 dB
Dynamic Mic - Hot Mic Out: 40 dB + 3 dB
IFB Input - Headset Out: 40 dB/22 dB (switchable) + 3 dB
Party-line - Headset Out: 34 dB + 3 dB

Rear Panel Connectors
Headset: XLR-6F
Microphone Out: XLR-3M
Intercom: 2 XLR-3 (male and female loop through)
IFB: XLR-3F
Power: 2.1mm jack

Front Panel Controls and Indicators
(1) Mute button
(1) Mute indicator LED (red)
(1) Talk back button
(1) Talk back indicator LED (green)
(1) Interrupt level control
(1) Non-Interrupt level control

Power
Intercom/IFB Voltage: 25 - 30 VDC
Current: 100mA idle, 120mA max
DC Adapter: 100 - 240V
Voltage: 30V @ 0.5A

Environmental
32o – 122o F (0o – 50o C)

Dimensions
6.0 in W x 3.0 in H x 8.0 in D
(152 mm x 76 mm x 203 mm)

Weight
2.0 lbs. (0.9 kg)
 

Product Spares List
 

Product Spare Part	Spare Part Description
810196Z	AB-120 MANUAL