Williams Sound PFM SYS A Bedienungsanleitung

Personal FM System Instructions

Basic System (PFM SYS A) / Educational System (PFM SYS B)

Please read through

these instructions as

you begin to oper-

ate the system.

Then save them for

questions that arise

as you continue to

use your Williams

Sound Personal FM

System.

Overview

Thank you for purchasing the Personal FM System from Williams Sound Corporation.

Anyone needing auditory assistance to overcome background noise, reverberation, or

distance from the sound source can benefit from the Personal FM System.

Your PFM System has two principal parts: the Transmitter and the Receiver. Much like

a miniature radio station, the Transmitter and microphone pick up the sounds you want

to hear and broadcast them over an FM radio signal. The receiver and earphone are

used to pick up the broadcast up to 100 feet away.

To avoid difficulties, please read through these instructions as you begin to use the sys-

tem. Then save them for questions that arise as you continue to use your Williams

Sound Personal FM System.

If you have problems with the PFM system, don’t hesitate to call us toll-free at 1-

800-843-3544.

PFM System B Shown: FM Transmitter Model PFM T16 & FM Receiver Model PFM R16

Microphone

Jack

On/Off Switch

Microphone

Plug Mount

Microphone

Mic Volume

On/Off &

FM Volume

Earphone Jack

Earphone

FM Transmitter Model PFM T16 FM Receiver Model PFM R16

(Shown with MIC 050 Microphone) (Shown with MIC 014 Microphone

and EAR 013 Earphone)

System Components

The Personal FM Basic and Educational Systems include the following components:

• Body Pack Transmitter (PFM T16E)

with 9V battery (BAT 006)

• Lavalier microphone (MIC 050)

• Mini earphone (EAR 013)

• Soft Nylon System Carry Case (CCS 020)

• (2) Belt clip cases (CCS 001)

• Instructions (MAN 014)

• Basic System Receiver:

Personal FM Receiver (PFM R7)

with 9V battery (BAT 006)

(OR)

• Educational System Receiver:

Personal FM Receiver (PFM R16)

with Plug Mount Microphone (MIC 014)

and 9V battery (BAT 006)

2 2

Speaker Uses Transmitter

With Microphone

Listeners Use A Receiver

With Earphones, Headphones, Or Neckloop

FM Radio Signal

How the PFM System Works:

The speaker wears the body-pack transmitter and a clip-on microphone. The speaker’s voice is broadcast as an FM radio signal over

a distance of 100-150 feet (30m). Listeners use the pocket receiver and earphone or headphone to hear the speaker’s voice directly,

with reduced background noise. A neckloop telecoil coupler allows the system to be used with telecoil (T-Switch) equipped hearing

aids.

Transmitter Operation:

Model PFM T16 Transmitter

1. Plug the microphone cord into the “Mic” jack on

top of the Transmitter.

2. Place the Transmitter in the belt clip case provid-

ed.

3. Turn the power switch on top of the Transmitter

to “On.”

4. Clip the microphone onto a collar, lapel, or tie. It

should be as close to the speaker’s mouth as is

practical.

The transmitter can be placed in a pants pocket, or

clipped onto a belt or waistband. Make sure the

Transmitter is turned OFF when not in use.

Note On The Transmitter Antenna:

The microphone cord is the transmitting antenna. Do

not bunch up the cord, wrap it around the transmitter,

or place the transmitter in a shirt pocket. The cord

Receiver Operation:

Model PFM R7 (System A)

Receiver Model PFM R7 has a single, wheel-type

volume control and an earphone output jack.

1. Plug the earphone or headphone into the “Ear”

jack on top of the Receiver.

2. Place the Receiver in the belt clip case provided.

3. Turn the power on by rotating the volume control

on top of the Receiver.

4. Place the earphone in your ear.

The Receiver can be placed in a pants pocket, or

clipped onto a belt, harness, or waistband. Make sure

the Receiver is turned OFF when not in use.

Adjusting The R7 Volume Controls:

Adjust the receiver volume control to a comfortable

listening level. You should be able to hear someone

speaking into the Transmitter microphone.

should hang as straight as possible.

3 3

Jumper On

Jumper Off

Note On The Receiver Antenna:

The earphone cord is the receiving antenna. Do not

bunch up the cord, wrap it around the receiver, or

place the receiver in a shirt pocket. The cord should

hang as straight as possible.

Receiver Operation:

Model PFM R16 (System B)

Receiver model PFM R16 has two volume control

knobs, a microphone input jack, and an earphone out-

put jack.

1. Insert the small Plug Mount Microphone (MIC

014) into the "Mic" jack on top of the Receiver.

2. Next, plug the earphone or headphone into the

"Ear" jack on top of the Receiver.

3. Place the Receiver in the belt clip case.

4. Turn the power on by rotating the taller "FM"

volume control on top of the Receiver.

5. Place the earphone in your ear.

The Receiver can be placed in a pants pocket, or

clipped onto a belt, harness, or waistband. Make sure

the Receiver is turned OFF when not in use.

Adjusting The R16 Volume Controls

1. Adjust the taller “FM” volume control to a com-

fortable listening level. You should be able to

hear someone speaking into the Transmitter

microphone.

2. Now adjust the shorter “Mic” volume control

until you can hear sounds picked up by the envi-

ronmental microphone on top of the receiver.

3. Adjust the two volume controls for a comfortable

mix of FM and environmental sounds.

You will normally want to have the FM signal louder

than the environmental Mic signal to avoid picking

up extra background noise. If no environmental

sounds are desired, turn the “Mic” control fully off. If

you want to hear nearby conversation or your own

voice, turn the “Mic” control up.

Adjusting The R16 Receiver Tone Controls:

The R16 and R16M have internal adjustments to cut

low frequency sounds and to boost high frequency

sounds. The adjustments are made by moving

jumpers inside the receiver.

1. To open the Receiver, first flip open the battery

compartment door. The back of the receiver

opens like a book - pull up and out on the battery

door to open the back.

2. Look at the R16 tone control diagram below to

identify the jumpers. Don’t “adjust” anything but

the jumpers!

3. The jumpers are moved by lifting them straight

up. Placing the jumper across both posts sets it in

the ON position. Placing the jumper on only one

of the posts sets it in the OFF position. Each

jumper has the effect shown in the chart below.

The jumpers can be used individually or com-

bined to alter the frequency response of the

receiver. For example, using Jumpers 2 and 3 in

the ON position provides 12dB of boost at 8kHz.

The jumpers affect both the FM and environmen-

tal microphone signal. Receivers are sent from

the factory with Jumper 1 on and Jumpers 2 and

3 off.

PFM R16 Receiver

Tone Control Diagram

Jumper 1: Low Frequency Boost:

-10dB at 100Hz when jumper is on.

-25dB at 100Hz when jumper is off

Jumper 2: High Frequency Boost

+6dB at 8kHz when jumper is on.

Jumper 3: High Frequency Boost

+6dB at 8kHz when jumper is on.

4 4

PFM T16 Transmitter

Frequency Change Diagrams

Selector

Switches

Note On The Receiver Antenna:

The earphone cord is the receiving antenna. Do not

bunch up the cord, wrap it around the receiver, or

place the receiver in a shirt pocket. The cord should

hang as straight as possible.

Frequency Change Procedures

PFM T16 Transmitter

1. Remove the Transmitter from the Belt Clip Case.

2. Open the battery door and remove the battery.

3. Grasp the right corner of the battery door and lift

the flap up and to your left. The back of the

Transmitter case will open like a book, exposing

the circuit board.

4. Use the photo diagram on the following page to

locate the channel selector switches.

5. Use the tip of a paper clip or a small screwdriver

(not a pencil point) to move the switches to cor-

respond with the switch positions on the pro-

gramming chart above. Select a new frequency at

least two channels away from the one you are

Channel Switch Settings

(MHz) 1 2 3 4 5 6 7 8

A 72.1 DN UP DN UP DN DN DN DN

B 72.3 DN UP DN UP UP DN DN DN

C 72.5 DN UP DN UP DN DN UP DN

D 72.7 DN UP DN UP UP DN UP DN

E 72.9 DN UP DN UP DN DN DN UP

F 75.5 UP UP DN UP UP DN DN DN

G 75.7 UP UP DN UP DN DN UP DN

H 75.9 UP UP DN UP UP DN UP DN

experiencing interference on. DO NOT TOUCH

ANY OF THE OTHER ADJUSTMENTS!

6.. Close the back of the Transmitter and install the

battery. Plug the microphone in and turn the

Transmitter on to provide a tuning signal for the

receivers. See the next section for receiver tuning

instructions.

PFM R7 & R16 Receivers

Tuning for the R7 and R16 Receivers is determined

by a single tuning coil, and is stabilized by phase-

locked-loop circuitry. A plastic tuning wrench (PLT

004) is needed to adjust the receiver tuning coil.

1. Use the Transmitter as a tuning signal source.

Have someone speak into the microphone so you

have something to listen to.

2. Keep the Transmitter and Receiver about 15 - 20

feet apart while tuning. The receiver must be

tuned under weak signal conditions.

3. Open the back of the receiver to expose the cir-

cuit board. Open the receiver battery flap first.

The receiver back snaps open like a book.

4. Use the photo diagram shown here to locate the

tuning coil. Use the headphone supplied with the

5 5

PFM R7 & R16 Receiver Tuning

Tuning Coil

receiver to listen for the transmitter signal while

you slowly and gently rotate the tuning slug

inside the tuning coil with the tuning wrench.

Adjust the tuning coil slowly and carefully. Do

not press down on the tuning slug. Adjust for

maximum signal.

5. Re-tune all the receivers and mark the new fre-

quency inside the case for future reference.

Rechargeable Batteries

The PFM 100 and PFM 200 System utilize a special

rechargeable Ni-Cad 6 volt battery (BAT 021)

designed to operate the systems for approximately 10

hours on an overnight charge. The batteries are

charged using a single battery charger (BAT 005) or a

multiple battery charger case (CHG 1269A) which

charges up to 12 receivers or transmitters.

Note: These units will not accept any other battery.

To Charge Batteries

1. Make sure both the Transmitter and Receiver are

turned off.

2. Plug the charger cord into the "MIC/CHARGE"

jack on top of the Transmitter.

3. Plug the second charger cord into the

"EAR/CHG" jack on top of the Receiver.

4. Plug the chargers into a wall outlet and charge for

12 hours.

The charge indicator light on the chargers should be

lit while the Transmitter and Receiver are charging. It

is okay to leave the Transmitter or Receiver charging

for extended periods of time.

Using Your Personal FM System

with a Hearing Aid

If you have a hearing aid equipped with a Telecoil (T-

Switch), you can use a Neckloop (NKL 003–chil-

dren’s size, or NKL 001–adult’s size) or Silhouette

coil (INC 005 WC) to magnetically couple the signal

from the PFM Receiver into your hearing aid. The

Neckloop plugs into the earphone jack of the receiv-

er. Turn the switch to the “T” position on your hear-

ing aid and adjust the volume control on the receiver

6 6

to a comfortable level. If you have two hearing aids

with telecoils, the signal will couple into both hearing

aids.

Direct Audio Input Hearing Aids

If your hearing aid has a direct audio input boot, you

can obtain a cord from your hearing aid manufactur-

er to plug directly into the PFM receiver. The cord’s

plug should be of a 3.5mm diameter in order to match

the receiver jack.

Applications

The Personal FM is designed to provide hearing

assistance for anyone when background noise or dis-

tance from the sound source make listening difficult.

The microphone and transmitter are placed close to

the desired sound source to help minimize back-

ground noise and to effectively eliminate the distance

between the listener and the sound source. Because

hearing ability varies, three categories of amplifica-

tion have been delineated:

1. No Hearing Loss–Low Amplification

Among Low Amplification applications are class-

room and related uses. The PFM System can be used

with headphones or earphones for Central Auditory

Processing Disorders, Learning Disabilities, or

Attention Deficit Disorders. The PFM System is used

primarily to boost speech sounds above other back-

ground noises, making it easier for the listener to

focus on what is being said. The optional Rugged

Headphone (HED 012–children’s size, and HED

014–adult’s size) are recommended for this applica-

tion. The EAR 013 Single Mini Earphone, EAR 008

Surround Earphone, or EAR 014 Dual Mini Earphone

can also be used.

2. Mild–Moderate Hearing Loss

These applications include the classroom, TV listen-

ing, car riding, and one-on-one conversations. The

PFM System can be used with the Single or Dual

Mini Earphone (EAR 013 or EAR 014) for moderate

amplification fittings. The Button Receiver Earphone

(EAR 012 WC) is also available for use with a snap-

on custom earmold. The PFM System is also suitable

for temporary mild hearing loss due to Otitis Media.

The Rugged Headphones (HED 008) or Surround

Earphone (EAR 022 or EAR 008) are recommended

since they do not enter the ear canal.

3. Severe–Profound Hearing Loss

These applications include the classroom, TV listen-

ing, car riding, and one-on-one conversations. For

severe to profound hearing loss, the PERSONAL FM

System should be used in conjunction with a hearing

aid. A Neckloop can be used with hearing aids that

have a telecoil. An adaptor cord can be used with

hearing aids that have direct audio input.

In Case of Difficulty

If your Personal FM System is not working, check the

following:

1. Make sure the batteries are fresh or completely

charged and that the “plus” and “minus” termi-

nals are installed correctly.

2. If the rechargeable batteries will only work for a

short period of time (less than 1 hour) even after

it is fully charged, it must be regenerated. Leave

it in the unit, with the unit turned on, for 5 - 6

hours. Then turn the unit off and charge for 14 -

16 hours. This should restore normal battery life.

The rechargeable battery will gradually lose its

capacity over time and should be replaced every

year.

7 7

3. Make sure the microphone is plugged into the

transmitter and the earphone is plugged into the

receiver.

4. If you have the PFM System B, make sure the

R16 Receiver’s plug mount microphone IS NOT

plugged into the Transmitter.

5. If you’re using the PFM System B with the PFM

R16 Receiver, make sure that the earphone has

been plugged into the earphone jack and not into

the receiver’s microphone jack.

6. Move the Transmitter and Receiver closer togeth-

er. You may be out of range. When using the sys-

tem indoors, it’s normal for the signal to momen-

tarily disappear in certain locations. This is called

a "drop-out". Moving a few feet will restore the

signal.

7. Make sure that the Transmitter and Receivers are

tuned to the same channel. The units have stick-

ers inside the back cover identifying the channel.

8. Do not try to use more than one Transmitter on

the same channel in close proximity to each

other. MORE THAN ONE TRANSMITTER ON

THE SAME CHANNEL WILL RESULT IN

INTERFERENCE IF THEY ARE CLOSE

TOGETHER. Keep the systems 50 - 100 feet

apart or use separate channels for each system

used.

9. If you are still hearing interference on the

Receivers, turn the Transmitter off and listen with

a receiver. If you hear the interference with the

Transmitter off, you need to change to a clear

channel. See the re-tuning instructions.

10. If problems remain, contact your dealer for fur-

ther help. Or call Williams Sound toll-free at 1-

800-843-3544.

Warranty

See the enclosed Warranty Card for Warranty details.

Be sure to fill out and mail the Warranty Card to reg-

ister your serial number and warranty.

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