RXC-3080
Hardware Installation and User Guide
9000-0000-042 Revision 06
30 of 45
Genave Electronics
Setting Rx Audio Levels
The Rx audio from the Radio Port (J13-pin 10)
is supplied directly to the high side of
potentiometer R75. This pot should be adjusted
to provide
100mV to 200mV
of audio on Test
Point 1 (just below R75) when receiving 3.0
Khz deviation of 1000 Hz in wide band and 1.5
Khz deviation in narrow band.
Setting Tx Audio Levels
The TX potentiometer (R18) is driven from a high impedance amplifier. The audio from the TX pot is
AC coupled to the Radio Port pin 12. Adjust this pot for
3.0 to 3.5 Khz deviation
(or 1.2 to 1.5 Khz
deviation for Narrow band) from the transceiver at Test Point 2 (just below R18). The audio from the
ADPCM, DTMF generator and PWM are all summed and amplified for transmission. Please contact
Genave for more information.
Tx Audio Level Adjustment
R18
Rx Audio Level Adjustment
R75
