Operating Instructions; Audio Control - Phonak TX-300V User Manual

TX-300V Operating Instructions
Power Unit On
Turn power on by pressing the power button.
Select a Channel
Select the transmit channel by pressing the channel
select UP and DOWN buttons.
Lock on Channel
Once you determine your transmit channel, you can
lock the transmitter on that channel. To lock a
channel, hold the Channel Select
"Up" button for 3 seconds until
the padlock icon appears on the
display. To unlock,
repeat this process and the padlock icon will disappear.
Test Tone (if necessary)
To broadcast a test tone, press the test tone button.
This helps to test receivers when no audio source is
available.
TX-300V Audio Control
Adjust Audio Input Level
Adjust the input knob counterclockwise to add gain
to Input 1. This will decrease gain to Input 2. Adjust
input knob clockwise to add gain to Input 2. This will
decrease gain to Input 1. If you have two audio sources
connected to both Input 1 and 2, adjust the level of
one input using the VU meter, then adjust the output
level of the other audio source. Adjust the input level
until the left VU meter(s) occasionally illuminate the
red LEDs. Illumination of the red LEDs indicates the
unit is in limiting. Limiting is required so that the unit
does not over-modulate the transmitter. If you don't
want any audio limiting to occur, make sure the red
LEDs never illuminate. If
you want a highly limited
signal, turn the audio gain
up so the red LEDs
illuminate often.
Channel Select
UP and DOWN buttons
Press Test Tone
button here
Adjust Contour
Adjust the Contour knob counterclockwise if your
audio source is mostly
voice. Adjust the knob
clockwise if your audio
source is mostly music.
The Contour knob adjusts
the relative equalization of
the unit. This equalization
boosts or cuts frequencies above 5 kHz.
Adjust Mix Level
Adjust the mix level until the
right VU meter occasionally
illuminates the red LED. This
is the level adjustment for the
combined output from Input 1
and Input 2.
Process Mode
Process mode is used for Audio Gain Control (AGC).
With the process mode enabled, the TX-300V will
automatically adjust for inconsistent signal input levels
by raising or lowering the signal level accordingly to
provide a consistent sound output level. This feature
should be used in applications where a consistent
sound level is important and the input levels vary
substantially. Typically you would not want to engage
the Process Mode when a speaker's emphasis is critical
to the message they are conveying.
Your TX-300V has been shipped to you with process
mode enabled. To enable or disable process mode hold
the channel select "Down" button for 8 seconds while
the unit is on. After 8 seconds the
unit will go into program mode
and the program (PGM) icon will
appear on the LCD.
Once in the program mode, the Process feature can be
toggled on and off by pressing the channel select "Up"
button.
LED lit when Process
is enabled
PGM
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