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JA95-043 Audio Controller - AMS43 Compatible
Installation and Operating Manual
Rev B
Page 17
(1)
Transceiver Switches and Legends
These are five white two-position toggle switches.
When a switch is set to the ‘up’ position, audio from
the associated transceiver is routed to the phones.
The legends (above the switches) are interchangeable
to allow customization.
(Default – COM1, COM2, AUX, FM1, FM2, PA.)
(2)
Receiver Switches and Legends
These are three blue three-position centre-off toggle switches.
When a switch is set to the ‘up’ or ‘down’ position audio from
the selected receiver is routed to the phones.
The legends (three above and three below the switches) are
interchangeable to allow customization.
(Default – NAV1, NAV2, ADF1, ADF2, DME, MKR.)
(3)
Receive Volume Control
This is a rotary knob that adjusts the phones volume of the receive
audio from minimum when fully counterclockwise (ccw), to maximum
when fully clockwise (cw). Individual radio volume controls should be
set to a nominal level, and then adjusted for changing flight conditions
using this control.
(4)
Mode Switch
This is a red two-position locking toggle switch. When set to the
‘up’ position, the unit is Emergency mode, and when set to the
‘down’ position, the unit is in Normal mode. The legends are
interchangeable to allow customization. (Default – EMER,
NORM.)
The switch is lockable to prevent accidental changing of the
mode. The switch must be lifted to release the lock.
For full information on Emergency and Normal Mode operation,
see sections
3.3
and
3.4
below.
(5)
TAPE/OFF Switch
This is a green two-position toggle switch.
Moving the TAPE/OFF switch into the OFF position causes the music
input - either from the rear tape input or from the front panel music input
or both - to be muted. Placing the switch in the TAPE position causes the
music to be unmuted.