Phonak TX-300V User manual

User’s Manual
TX-300V Studio Transmitter
Phonak Communications AG
Laenggasse 17
3280 Murten
Switzerland
T [phone]
F [phone]
[email protected]
www.phonakcom.ch
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:02 PM Page 1

Welcome to Phonak
iPhonak™ and the Phonak Logo are registered trademarks of Phonak Communications AG.
TX-300V_2006_01_20 © 2006 Phonak Communications AG. All Rights Reserved.
TX-300V Studio Transmitter
Package Contents 116-1938
Phonak Part Number
Rack Mount Kit
(part number 116-1940, see page 14)
Optional Accessories
· TX-300V Studio Transmitter
· Power Supply
· User Manual
· Telescoping Antenna Radials (2)
· Antenna Mounting Assembly
· 50 Ohm Coaxial Cable (7.6m)
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:02 PM Page 2

Table of Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Audio Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
RF Reception Maximization Strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Compliance Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Table of Contents
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:02 PM Page 3

Specifications
4
Specifications
p
S
p
ecification
RF Fre
q
uenc
y
Ran
g
e 150-220MHz
(
Actual fre
q
uencies for each unit set b
y
Phonak
)
Number of Channels 20 Maximum
Fre
q
uenc
y
Accurac
y
/- .005% stabilit
y
0 to 50C
Transmitter Stabilit
y
50 PPM
Out
p
ut Power 50mW, 100mW, 300Mw
(
Actual
p
ower for each fre
q
uenc
y
set b
y
Phonak
)
Antenna Di
p
ole Antenna
(
Included with Transmitter
)
Antenna Connector BNC
Compliance FCC Part 15, Industry Canada
S
y
stem Distortion <2% total harmonic distortion
(
THD
)
at 80% deviation
Audio Input 1 Rear panel. Female-XLR and phone combo connector, balanced, 0/-55 dBu (line/mic) nominal
in
p
ut level ad
j
ustable
Audio Input 2 Rear panel. (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level adjustable, +30
dBu maximum, im
p
edance 100k ohms
Combined Audio Output (Mix) Rear panel. (2) Phono connectors, unbalanced, 0 dBu nominal output level, +19 dBu maximum,
impedance 10 ohms.
Head
p
hone Out
p
ut Front
p
anel.
(
1
)
3.5 mm connector, unbalanced, ad
j
ustable out
p
ut level
Front Panel Power, Test Tone on/off, Channel u
p
/down, In
p
ut Level, Mix Level, Contour, Headset Level
Rear Panel In
p
ut 1 Level
(
Line, Mic, Mic-Phantom Power
)
, In
p
ut 2 Level
(
-10/+10 dBu
)
, RF Power
(
low, mid,
Internal Ad
j
ustments Com
p
ression ratio for audio
p
rocessor
Pro
g
rammin
g
SQ on/off, Processin
g
on/off
In
p
ut 1 and In
p
ut 2, Mix VU Meters 8 Green, 2 Red
Processin
g
Indicated b
y
a
g
reen LED when on
RF Power Indicated on the LCD Dis
p
la
y
Power Red LED illuminates when the unit is
p
owered u
p
LCD Dis
p
la
y
Channel desi
g
nation, lock status, RF Power Level,
p
ro
g
rammin
g
Test Tone Red LED illuminates when test tone enabled
Power Su
pp
l
y
T
yp
e In-line
p
ower su
pp
l
y
Power Su
pp
l
y
In
p
ut 230VAC, 50 Hz
Power Su
pp
l
y
Out
p
ut 15VAC, 1000mA
Power Su
pp
l
y
Connector 5.0 mm
(
.02 in
)
2.5 mm
(
OD x .01 in
)
ID, barrel t
yp
e
Com
p
liance CE
Dimensions W x D x H 20.3 x 20 x 4.45cm
(
8.0 x 8.0 x 1.75 in
)
Unit Wei
g
ht 1.4k
g(
3.0 lbs
)
Unit Wei
g
ht with LA-201 Power Su
pp
l
y
2.0k
g(
4.4 lbs
)
Shi
pp
in
g
Wei
g
h
t
2 k
g(
5.0 lbs
)
Rack Mounting 1 rack unit, optional rack mount not included.
Order Phonak
p
art number 116-1940.
Tem
p
erature - O
p
eration -10 C
(
14 F
)
to +40°
(
104 F
)
Tem
p
erature - Stora
g
e -20 C
(
-4 F
)
to +50°
(
122 F
)
Humidit
y
0 to 95% relative humidit
y
, non-condensin
g
RF
Audio
Controls
Indicators
Power
Physical
Environmental
high)
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:02 PM Page 4

In-Line
Power Supply
(provided)
230VAC
50 Hz
BNC
Phonak LCD Display
HEADPHONE
3.5MM
Stereo
15VAC, 1A
Transmitter RF Board
Power Supply
CPU Module
ProcessingPre-emphasis
POWER
On Off
PROCESS
ANTENNA
All switches are shown in their default position.
Functions controlled by the CPU
Module
Volume
Up
Down
Remote
Antenna
On Off
Compression Ratio
(internal adjustment)
Red
LED
Green
LED
CONTOUR
MI
X
LEVE
L
CHANNEL SELECT
Low High
Mid
Female XLR-1/4"
Combo Connector Phono
2/Tip 3/Ring
Line
1/Sleeve
Mic
12VDC
Mic
Phantom Pwr
Input 1 Level Select
Line, Mic, Mic-Phantom Pwr
-10dBu+10dBu
Input 2 Level Select
-10dBu, +10dBu
Phono
Input Level POT
Front Panel
400Hz
TEST TONE
OFF ON
Red
LED
Test Tone Button
Front Panel
MIX OUTPUT
Input 1 VU
Meter
Input 2 VU
Meter
INPUT 2
INPUT 1
RF POWER
MIX Level
VU Meter
RS-232
Programming
DB-9
connector
Block Diagram
5
TX-300V Block Diagram
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:02 PM Page 5

Quick Reference
6
Quick Reference
TX-300V Front Panel: Controls & Displays
Adjust audio input levels
of Input 1 and Input 2
here. See page 9 for more
information
Indicates audio input
level of Input 1 and
Input 2 Shows mixed
audio level
Indicates Pro-
cess Mode
is active
LCD: Shows
which channel
is selected Monitor Port:
Plug in a headset
and adjust volume
Channel Select Down:
Press for 8 seconds to
enter program mode.
See page 9 for more
information
Contour: Equalization
adjustment. Turn
counter-clockwise for
voice and clockwise for
music
Mix Level: Adjust so
the Mix Level meter
occasionally lights
the red LED
Test Tone: Acti-
vates a tone to aid
system setup
Power
ON / OFF
TX-300V Back Panel: Connections & Settings
The power supply
connects here
Set RF Power level here (Ľ, ˝ and
Full). See page 7 for guidelines on
setting power levels
Input 2: Connect unbalanced
audio to these phono
connectors, input level -10dBu
or +10dBu
Input 2: Set switch to
match the level of your
Input 2 audio source.
Input 1: Used for balanced
connection of a microphone or
line level input. This
combination connector accepts
either XLR or phone
connectors
Select Line, Mic or Mic+Phantom
Power. Line is balanced 0 dBu
input level, Mic is -55dBu,
+12VDC supplied in PH PWR
position. If not using input 1, leave
in line position.
Mix Output: These
connectors contain a mix of
Input 1 and Input 2. They are
unbalanced phono connectors;
and the output level is -10dBu
Remote Antenna Connection:
See page 8 for details on
antennas that can be attached
here
Channel Select Up:
Press for 3 seconds to
lock on current
channel
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Unpack the Product
Remove outer packaging and plastic cover. Inspect for
physical damage.
Mount in Rack (if necessary)
If rack mounting the unit, install the optional rack
mount kit (part 116-1940) according to the instructions
included with the kit, then install the TX-300V in the
rack.
Connect Power
Plug the power supply into the power connector on the
back panel, then plug the power supply into an outlet.
Set RF Power
Set the RF POWER switch on the back of the unit to
Full, ½ or ¼ (Level is indicated on the LCD display).
The amount of transmitted RF power that you will need
depends on your application. If you are operating
multiple transmitters in the same environment, it is best
to set the transmitter’s output power to its lowest level
to reduce the possibility of interference.
Connect Audio Inputs
The TX-300V has two audio input options: Input 1
and Input 2. Input 1 is a balanced connection using
either an XLR or phone connector. Input 2 has two
unbalanced mixing phono connectors. Use Input 1 if
you are using a microphone or if you have a balanced
connection such as from a professional audio mixer (you
can also use Input 1 for unbalanced connections). Use
Input 2 to connect to an unbalanced audio source.
Input 1
Connect the audio source(s) to one or both audio input
connections. Input 1 offers a choice of a balanced XLR
or phone connector.
Plug your microphone into Input 1 and move the input
select switch to Mic (for dynamic microphones) or Mic
+ PH Power (for condenser microphones).
Setup
TX-300V Studio Setup Instructions
7
Rack Mount with dual unit installed
Rack Mount with single unit installed
Back of TX-300V with XLR connected to
Input 1
Line
Mic
Mic with
Phantom
Power
- +
XLR Wiring Phone Wiring
Input 2
Plug your unbalanced audio source into Input 2 and
select the audio level switch for -10dBu or +10dBu, to
match the audio level coming from your equipment.
Full Power 1/2 Power 1/4 Power
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 7

TX-300V Setup Instructions continued
Setup continued
8
Antenna Installation
Your TX-300V Studio Transmitter Set includes a remote antenna that
features two adjustable-length radials. Extending these radials to the
correct length is extremely important for the system to achieve maximum
transmission range.
Use the following process to determine how long to set your antenna radial
lengths:
1) Determine the average of the highest and lowest frequencies you will
use with this transmitter. (Example: If you are going to use 182.50 MHz
and 186.250 MHz then take the average of 182.50 +186.250 and then
divide by 2=184.375MHz).
2) Divide 7500 by the average frequency (in MHz), then subtract 5 from
this result. The solution to this equation is the length in centimeters to set
your radials to. (Example: 7500/184.375=40.68. 40.68-5= 35.68cm radial
length).
3) Extend the two adjustable length radials to the calculated length
(Example: 35.68 centimeters). Screw the two radials to the antenna
mounting assembly.
4) Install the antenna mounting assembly in desired location, preferably
high on a wall, away from any metal objects and with minimal obstuctions
between antenna and location of receivers and orient ground side
downward as indicated on the plastic housing.
5) Connect the RG 58, 50 Ohm coaxial cable to the BNC connectors on
the antenna and on the transmitter.
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 8

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.
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.
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.
TX-300V Operation
9
Channel Select
UP and DOWN buttons
TX-300V Operating Instructions
Press Test Tone
button here
TX-300V Audio Control
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.
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10
RF Reception
For proper and dependable operation, Phonak receivers need to receive a
strong and consistent signal from the originating transmitter. The following
strategies should be used to maximize this signal:
1. When designing and installing your system, keep in mind that the location
of the transmitting antenna is critical to maximize broadcast range.
2. Eliminate or minimize obstructions between the transmitter and receiver(s).
3. Minimize the distance between the transmitter and receiver(s).
4. Move the transmitting antenna away from metal or conductive objects.
5. Place the transmitting antenna as high as possible.
6. Orient the transmitting antenna vertically.
7. Position the RF Power switch on the back of the TX-300V to full RF
Power, unless lower power is necessary (see page 7).
CAUTION: When installing antennas, ensure the antenna is clear of power
lines.
RF Reception Maximization Strategies
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11
Troubleshooting
The TX-300V has no power
Make sure the power transformer is connected to a power source and is connected to the jack marked
“Power Input”. Make sure the POWER button is pressed in.
There is no audio or the audio level is too low
Make sure that your audio source is properly connected to Input 1 and/or Input 2. The Input 1 or
Input 2 switches must be in the correct position for the appropriate input level. For example: if you
are using the output of a mixer on Input 2, the switch should be in the -10dBu position. If it were to
be in the +10dBu position, the level would be too low. Also, check the Input knob to ensure it is
properly adjusted. You should be able to see the VU meter deflect on Input 1 or Input 2 corresponding
with the input level of the audio source. You can listen to the audio source by connecting a headset to
the front panel jack and adjusting the Monitor volume control.
If the level of audio into the transmitter is low and can’t be corrected using the level input switches,
the audio processor can be turned on to boost the signal (see page 7 to set, page 9 for description of
Process Mode).
The audio is distorted
Check to make sure you have the input level select switches in the proper position. You may be
providing too much audio level for the input stage to handle.
There is hum in the audio
Make sure you have properly grounded the audio source to the TX-300V. Check the connections from
the audio source to the TX-300V. If you can, try to use a balanced audio source - this will reduce the
chance of creating hum. Connect a ground wire from the TX-300V to ground and/or to the ground of
the source audio.
There is a tone
The Test Tone button has been pressed (its LED light is on). Push the Test Tone button to turn off the
tone.
The Audio Input 1 sounds “tinny”
If you are using an unbalanced audio source, make sure Pin 3 on the XLR or the ring on the phone plug
is grounded.
I can pick up the signal on the receiver, but it sounds like it’s not tuned in
Check to make sure the transmitter and receiver are on exactly the same channel. It’s a good idea to
lock the channels once they have been set. To lock theTX-300V, press the UP button for a 3 seconds.
End users are adjusting the unit
First, lock the channel by pressing and holding the channel select UP button for 3 seconds. Consider
removing the Input, Mix Level and Contour knobs. You can order a rack mount kit part number 116-
1940 from Phonak which offers a security cover that will limit access to the unit.
TX-300V Troubleshooting
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 11

12
Compliance Notice
DDeeccllaarraattiioonnooffCCoonnffoorrmmiittyy//CCoommpplliiaanncceeNNoottiiccee
Phonak Communications AG, Laenggasse 17, CH-3280 Murten confirms
that the Studio Transmitter TX-300V corresponds to the standards EN 300
422, EN 300 454, EN 301 489-1/-9 and FCC 47 C.F.R. Part 74, including
all necessary annexes.
Please check with your local Phonak distributor, if you need a license from
your local regulatory agency to operate the system.
This transmitter may only be used to provide auditory assistance to persons
in studio, stage and entertainment settings and persons with hearing
disabilities. Two-way voice communications and all other types of uses not
mentioned above are expressly prohibited.
Caution: Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate
Phonak equipment.
Compliance Notice
Compliance Notice
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 12

13
Phonak offers you a comprehensive global warranty which becomes
effective on the date of purchase. Please ask your local Phonak distributor
about the details and duration. This warranty covers any repairs due to
defects in material and/or workmanship. The warranty does not cover
damage from improper handling or care, exposure to chemicals, immersion
in water or undue stress. Damage caused by third parties or non-authorized
service centers renders the Phonak warranty null and void. This warranty
does not include any service performed by a local distributor in their office.
Serial number: _________________________________
Date of purchase:_________________________________
Warranty
Contacting Phonak
AAddddrreessss::
Laenggasse 17
3280 Murten
Switzerland
PPhhoonnee::[phone]
FFaaxx::[phone]
WWeebbSSiittee::www.phonakcom.ch
EEmmaaiill::[email protected]
Phonak Communications AG
Compliance Notice
Warranty
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 13

14
116-1940 Rack Mounting Kit
Includes components for single and dual rack configuration and a
security cover
Rack Mount Kit
Optional Accessory
tx-300v studio manual_2006_01_20.qxp 2/1/2006 12:03 PM Page 14

Phonak Communications AG
Laenggasse 17
3280 Murten
Switzerland
T [phone]
F [phone]
[email protected]
www.phonakcom.ch
15
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16
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