JA34-001 Universal Radio Adapter
Installation Manual
Rev A
Page 2
1.4
Specifications
1.4.1
Electrical Specifications
Power Input
Nominal voltage
28 Vdc
Maximum voltage
30.3 Vdc
Minimum voltage
22.0 Vdc
Emergency voltage
18.0 Vdc
Input current
0.5 A max
1.4.1.1
Audio Performance
Rated Input Level
Receive audio rated input level
7.75 Vrms
±
10%
Microphone input level
250 mVrms
±
10%
Rated Output Power
Rated output power
7.75 Vrms
±
10%
Microphone rated output (150 Ohm mode)
250 mVrms
±
10%
Microphone rated output (8 Ohm mode)
50 mVrms
±
10%
Audio Frequency Response
Receive output audio frequency response
≤
3dB from 300 to 6000 Hz
Microphone audio output audio frequency response
≤
3dB from 300 to 6000 Hz
Distortion Characteristics
Audio output distortion at rated power
≤
10%
Input Impedance
Microphone input impedance
150
Ω
±
10%
Receive Audio input impedance
600
Ω
±
10%
Output Load
Receive load
600
Ω
±
10%
Microphone load (150 Ohm mode)
150
Ω
±
10%
Microphone load (8 Ohm mode)
8
Ω
±
20%
Input to Input Crosstalk Level
Input to Input crosstalk
≤
60 dB
Audio Noise Level without Signal
Noise level below the rated output
≥
60 dB
1.4.1.2
Audio Performance, Other
MIC input designed for MIC type
amplified dynamic/electret
MIC input bias voltage
12 Vdc
±
10%
MIC input circuitry type
differential
RECEIVE AUDIO input circuitry type
Transformer Coupled
RECEIVE output circuitry type
Transformer Coupled
MIC output circuitry type
Transformer Coupled
