Icom IC-F3400D Operating Manual page 67

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MENU SCREEN
Functions (Continued)
RX Speaker (For the Mobile types)
Turns the RX speaker function ON or OFF.
When this function is ON, the received audio can be
heard through an external speaker that is connected
to the D-Sub 25 pin connector.
NOTE:
• This function is usable when an external speaker is
connected to the D-Sub 25 pin connector.
• This function is useful when a user is out of the
vehicle.
• The audio output level is linked to the transceiver's
volume control.
Surveillance
Turns the Surveillance function ON or OFF.
When this function is ON, beeps are not heard and
the backlight and the Status indicator do not light,
even when a signal is received, or a key is pushed.
USB Mode Select
Selects the USB port mode.
• Data Transfer: Used for setting up the transceiver,
updating the firmware, or using the
PC control command.
• Card Reader: Reads the inserted card contents.
VOX
Turns the VOX function ON or OFF.
When this function is ON, the receive and transmit are
automatically switched by detecting the user's voice.
NOTE: To use the function, a headset* and a VOX
converter cable are required (user supplied).
*Bluetooth headset is also usable.
VOX Delay
Sets the VOX Delay.
The VOX Delay is the period of time the transceiver
continues transmitting after the user stops speaking,
and then the VOX switches to receive.
• Range: 0.5 ~ 3.0 seconds
NOTE: If you set the time too short, a pause in
a conversation may be regarded as the end of
conversation, and the transceiver will start receiving,
even as the conversation continues.
VOX Gain
Sets the VOX gain.
The VOX function automatically switches between
receive and transmit by detecting the user's voice.
• Range: 1 ~ 10
L Higher values make the VOX function more sensitive to
sounds.
Zeroize
In the Digital mode
Disables the Encryption Key.
After Zeroizing, the Encryption function is disabled
until the transceiver is programmed again.
NOTE: When Zeroizing, both the Encryption Key in
the transceiver, and the registered Encryption Key in
the UT-134 are deleted.
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