JA44-001 High Impedance Headset to Low Impedance Intercom Adapter
Installation and Operating Manual
Rev A
Page 2
1.4.1.1
Audio Performance
Rated Input Level
MIC INPUT rated level
0.25 Vrms
±
10%
PHONE INPUT rated level
0.9 Vrms
±
10%
Rated Output Level
MIC OUTPUT rated level
250 uVrms
±
10%
PHONE OUTPUT rated level
4.4 Vrms
±
10%
Audio Frequency Response
MIC OUTPUT audio frequency response
≤3dB from 300 to 6000 Hz
PHONE OUTPUT audio frequency response
≤3dB from 300 to 6000 Hz
Distortion Characteristics
PHONE OUTPUT distortion at rated power
≤10% THD+N
PHONE OUTPUT distortion at 10% of rated power
≤3% THD+N
Input Impedance
MIC INPUT Impedance
150
Ω
±
10%
PHONE INPUT Impedance
5
Ω
±
30%
Output Load
MIC OUTPUT load Impedance
5
Ω
±
30%
PHONE OUTPUT load Impedance
150
Ω
±
10%
Audio Noise Level without Signal
Noise level below the rated output
≥60 dB
1.4.2
Mechanical Specifications
Height
1.04 in [26.4 mm] max
Length (not including connector cable)
4.95 in [125.7 mm] max
Width
1.22 in [31 mm] max
Weight
0.32 lb [0.15 kg] max
Material
Black Polycarbonate Plastic
Connectors (2):
J1 (Headset Plug)
One U-174/U
J2 (Headset Jack)
One U-92A/U
Mounting
U-92A/U Jack
Bonding
N/A
Installation kit part number
N/A