Williams Sound PFM SYS A User manual

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

1
2
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.
Copyright 1995, Williams Sound Corp. MAN 014