OTE PUMA T2 - Tab. B.8: KA197;KA297 Microphone Characteristics; Tab. B.9: KA197;KA297 Earphone Characteristics; Tab. B.10: Pin Functions

PUMA T2
Technical Handbook
Antenna & accessories
P/N: 779-0306/01
Revision 03
OTE Proprietary information
Page 113
When one of these too audio accessory is connected with the radio, it is
recognized so that the PUMA T2 can automatically switch the audio signals to the
external microphone.
These audio kit are shown in Fig. B.8.
Microphone and earphone characteristics are shown in Tab. B.8 and Tab. B.9.
Tab. B.8: KA197/KA297 microphone characteristics
Parameter/Type Value/caracteristics
Type Electret, Water resistant
Frequency range
200 Hz ÷ 5000 Hz
Voltage
1 V ÷ 10 V
Sensitivity
-61 dB ± 2.5 dB at 1 kHz (0 dB = 1 V/m bar)
Impedance
2 KΩ ± 30% at 1 kHz
Temperature range
-30°C ÷ +60°C
Tab. B.9: KA197/KA297 earphone characteristics
Parameter Value/caracteristics
Type Water resistant
Frequency range
40 Hz ÷ 3000 Hz
Sensitivity at 1000Hz
100dB - .0008µV/1mVA
Power 60 mW
Temperature range
-30°C ÷ +60°C
Impedenza
500Ω ± 30%
Tab. B.10: Pin functions
Pin
Wires colour
Function
PIN 1 BLACK GND
PIN 2 BLUE MIC-EN
PIN 3 WHITE MIC-EP
PIN 4 RED PTT-EXT
PIN 5 YELLOW AP-EXT
PIN 6 BROWN P-AUX2
PIN 7 NC