Installation manual

AMX240 Audio Panel Installation Manual
200-890-0240 Rev. 02
3.9.1 Cellular telephone sidetone
As shipped from the factory, the AMX240 provides cellular telephone sidetone (the user’s voice fed back to the
headset). Some cell phones already provide sidetone. In AMX240 Telephone sidetone can be disabled by pressing
the NAV 2 button for more than one second.
3.10 Utility Jack
The 2.5-millimeter (3/32”) jack on the front of the AMX240 has three distinct functions:
 Cell phone input
 Advisory audio input
 Music input
The use of this jack is controlled by three Smart Function Keys (SFK) controlled from the front panel. See Section
3.11 — Smart Function Keys.
3.10.1 Cellular phone
When a cellular telephone is connected to this jack, the AMX240 audio panel will connect the intercom to the cell
phone when the TEL () button is pressed (5), and behave as described in section 3.4. The telephone ringer, if pre-
sent, will be heard unless the input is muted by other radio or intercom.
3.10.2 Audio Advisory Input
The front jack can be used as a priority advisory input for auxiliary systems such as a GPS terrain advisory or porta-
ble traffic watch system. To prevent radio or intercom from muting this input, press the “Music Symbol (10)” bu t-
ton.
3.10.2.1 Smart Jack Function
When the AMX240 has a signal on music #1 input coming in from the rear connector, the front panel jack automati-
cally becomes a Priority Advisory input, and is heard in the crew headphones.
NOTE
The front jack is no substitute for the certified installation of alerts such as the GPS waypoint or autopilot tones.
These still must be hard wired into the back by your installer. The front jack input will be muted by radio or inter-
com unless music is actively playing in the rear connector.
3.10.3 Music Input
When used as a music input, the front panel jack is treated as Music #1. However, thanks to the function controls, it
can be distributed to all users, depending on the intercom mode.
3.11 Bluetooth® interface
The AMX240 has a Bluetooth interface. The audio panel is always “discoverable,” so you just
need to search for the AMX240 from your Bluetooth-equipped phone or music source. The default
access code is 0000, if needed. Once the AMX240 has been “paired” with your Bluetooth device,
the TEL distribution will act as described in § 3.4.
You can answer a call by pushing the [  ] button while it is ringing. Calls can be answered from the telephone
handset or the audio panel. You can disconnect from either the handset or the audio panel. When a call is disco n-
nected or dropped, the [  ] button indicator will change to white after a few moments.
3.11.1 Pairing and unpairing Bluetooth devices
The AMX240 can be paired with up to eight individual devices. When that number is exceeded, one device will be
automatically un-paired to allow the new device. The device eliminate will be selected at random by the Bluetooth
module. Hint, if your old phone is not recognized by the AMX240, you may simply need to reset the Bluetooth. With
the AMX240 turned off, push and hold the NAV 1 and MKR buttons. Turn the AMX240 on. You should hear a tone
beep in the headset, indicating the successful reset of the Bluetooth interface. You will need to re-pair any devices.