JA98-001 Remote Mount Audio Controller
Installation and Operating Manual
Rev A
Page 18
Note
: During configuration via ProCS, either DIRECT AUDIO 2 or CVR is selected. In Emergency Mode,
DIRECT AUDIO 2 will be sent to the Pilot's phones if selected. If CVR is selected, the pilot's phones output
will also be directed to the CVR.
The ICS audio is output on the phones of each user. The MFD controls the ICS volume level.
The ICS audio is muted during transmit (if selected via ProCS –
see section 2.5.2.8
).
The ICS audio level at the phones is controlled by the ICS volume control.
3.2.6
Music Operation
Music to the phones will be muted by incoming audio (ICS, Receive, Direct or Alert Audio) or if the unit is transmitting.
When the incoming audio has ended, the music will gradually return to the previous level.
3.3
Emergency Operation Mode
Emergency mode is entered automatically if power to the unit is lost or if Pin 1 of J12 is disconnected from ground.
3.3.1
Auto Emergency Mode
If the unit is in emergency mode because power has been lost to the unit, the sum of the COM 1 transceiver, NAV 1
receive, DIRECT AUDIO 1 and DIRECT AUDIO 2 (when configured on) will be routed to the pilot’s phones and the
CVR. The pilot's microphone and transmit key are connected to the COM 1 transceiver. No other function in the JA98-
001 will operate when power is lost.
3.3.2
Selected Emergency Mode
If Emergency mode has been selected from the MFD or from an external emergency/normal switch, and sufficient
power is applied to the JA98, the sum of the COM 1 receive, NAV 1 receive, DIRECT AUDIO 1 and DIRECT AUDIO 2
(when configured on) and Alert audio will be routed to the pilot’s phones and the CVR. The pilot's microphone and
transmit key are connected to the COM 1 transceiver. The pilot is disconnected from the ICS. The COM 1 transceiver
and NAV 1 receiver and DIRECT AUDIO 1 are not available to the other users. All other functions of the JA98-001 will
operate.
.
