JA39-022 Headset Adapter -
230 Ω
Mic -
230 Ω Phones
Installation Manual
Rev A
Page 2
1.4
Specifications
1.4.1
Electrical Specif
ications
Power Input
Primary nominal
bias
voltage
12.0 Vdc
Maximum bias
voltage
16.0 Vdc
Minimum
bias
voltage
10.0 Vdc
Input current at 12 Vdc
12 mA
max
1.4.1.1
Audio Performance
Rated Input Level
Phones
rated input level
Microphone input level
3.4
Vrms
±
10%
3.0
mVrms
±
10%
Rated Output
Level
Phone rated output
into 115 Ohms
Microphone rated output
into 150 Ohms AC
3.4
Vrms
±
10%
250 mVrms
±
20%
Audio Frequency Response
Phone
output audio frequency response
≤3dB from 300 to 6000 Hz
Microphone
output audio frequency response
≤3dB from 300 to 6000 Hz
Distortion Characteristics
Phones
output distortion at rated power
≤
10% THD+N
Phones
output distortion at 10% of rated power
≤
3% THD+N
Input Impedance
Microphone input Imp
edance
900
Ω
±
10%
Phones input Impedance
115
Ω
±
10%
Out
put Impedance
Phones out
put Impedance
≤
115
Ω
Microphone
output Impedance
150
Ω
±
10%
Out
put Load Impedance
Phones out
put load Impedance
115
Ω
±
10%
Microphone
output Impedance
150
Ω
±
10%
Audio Noise Level
without Signal
Noise
level below the rated output
≥
55
dB
1.4.1.2
Audio Performance, Other
Microphone
input designed for MIC type
dynamic
Phones output circuitry type
Direct Coupled
