J301A-001 Audio Controller
Installation and Operating Manual
Rev A
Page 17
(4)
Transmit Selector
This is a rotary ten-position control that is used to select
transmission via one of the eight transceivers, ICS/
RMT
or
the EMER position. Each of the transmit selector positions is
linked by a white line to the corresponding transmit select
annunciator, transceiver switch and legend.
When a position is selected for transmit, the associated
annunciator will illuminate green (COM4 in this example).
See section
(5)
for the EMER (emergency) position.
(5)
EMER Position
I
f the transmit selector is rotated to the EMER (Emergency)
position, the user can select emergency mode. To prevent
accidental selection of this mode, the transmit selector
switch must be pulled as it is turned.
For full information on Emergency mode, refer to
(6)
Transmit Annunciator - TX
(7)
ICS or
RMT
Position
This transmit position can be configured via ProCS
as
ICS
or
RMT
(remote transmit enable).
(
Default
ICS
When configured as the
ICS
KEY function, when the TX selector is in the ICS position the TX PTT KEY routes the
user's microphone to the intercom audio.
When configured as
RMT
and selected via the TX selector, the remote transmit select inputs are used to select the
transceiver for transmit.
(8)
Receive Volume Control
This is a rotary knob marked RX, that adjusts the
phones volume of the receive audio from minimum
(CCW) to maximum (CW). Individual radio volume
controls should be set to a nominal level, and then
adjusted for changing flight conditions using this
control.
(9)
ICS Volume Control
This is a rotary knob marked ICS, used to adjust the
volume of all ICS audio to suit the ambient conditions.
Rotating the control completely CW gives rated level,
and completely CCW reduces the output to minimum
level.
(10)
Music and Private Intercom Select Switches (
MUS
and
PVT
)
The
MUS
(Music) select switch is a two-position blue toggle switch that turns the music on
when set to the ‘up’ position (towards the legend).
The
PVT
(Private Intercom) switch is a blue two-position toggle switch that connects the
user's headset to the Andrea PVT Intercom in the PVT (up) position and to the Andrea
Intercom when in the down position. This switch functions when the J30A is configured to
use the Andrea Intercom from the ProCS.
This is a deadfront annunciator that will illuminate when the
J301A is transmitting. The default legend is ‘TX’, but it is
interchangeable to allow customization.
