Williams Sound PFM T31 User Manual

MAN 109C ©2005, Williams Sound Corp.

Components:

PFM T31 Body pack transmitter

BAT 001 AA Alkaline Batteries

Instructions:

Before you begin, make sure you have AA
Alkaline batteries installed in the transmit­ter. See Battery Information on page 2.

1. Plug the microphone into the “mic” jack
on top of the transmitter.

2. Turn the power on: Place the FM switch
to the “On” position.

3. Position the microphone as close to the
speaker’s mouth as practical.

4. When you are ready to speak, turn the
Mic Mute Switch to the “On” position.
When you are done speaking, mute the mic
by turning

the switch to the “Off” position. This will
eliminate any unwanted noise as a result of
the transmitter being on.

Note: The microphone cord is also the
transmitting antenna. For maximum range,
make sure the microphone cord is hanging
as straight as possible.

5. Remember to turn the transmitter off
when you are done using it: Turn the “FM”
switch to the “Off” position.

Thank you for purchasing the PFM T31 transmitter from Williams Sound. The T31 trans­mitter is designed to operate with a wide-band FM, 72–76 MHz receiver. For optimal per­formance, we recommend using the Williams Sound R31 or R32 receiver. Please call a
Williams Sound representative for more information: 800-843-3544.
How it Works: The T31 transmitter uses a microphone (not included) to pick up the desired
sound source. The speaker talks into the microphone, and the T31 transmitter broadcasts the
message over an FM radio signal. Listeners wear FM receivers to pickup the broadcast and
hear the speaker’s message.

Mic

Williams Sound FM

Off

On

FM

On/Off Switch

Mic Jack

Mic

Mic Mute Switch

PFM T31 Transmitter

Instructions For Use & Care

Williams Sound

Helping People Hear

®

2

Williams Sound

®

Helping People Hear

BATTERY INFORMATION:

Battery Type: (2) BAT 001 AA 1.5 V Non-rechargeable Alkaline batteries.
Battery Life: Approx. 12 hours. 70 mA nominal current drain.
Optional Rechargeable Batteries: BAT 026 AA NiMH rechargeable batteries. 10 hours per
charge, 70 mA nominal current drain. Uses Williams Sound CHG 200 Charger.
Ba

ttery Installation: Insert a small coin into the pry slot of the battery compartment. Turn
the coin to release the battery compartment cover. Carefully observe the marked +/- polari­ty and press the batteries into place. NOTE: Batteries installed incorrectly may result in
damage to the product. This is not covered under the product warranty.

Frequency Switches

Begin by opening the battery compartment. Remove the batteries, then open the back panel
to expose the circuit board.
Referencing the Switch Settings chart (above), adjust the frequency switches on the T31
transmitter accordingly using a small screw driver or paper clip.
Reinstall the batteries, then close the back of the transmitter. Plug in the mic, and turn on the
transmitter to provide a tuning signal for the receivers.
Be sure to change the receiver to the corresponding channel.

Switch Settings

MHz 1 2 3 4 5 6 7 8

72.1 DN UP DN UP DN DN DN DN

72.3 DN UP DN UP UP DN DN DN

72.5 DN UP DN UP DN DN UP DN

72.6 DN DN UP DN DN DN DN UP

72.7 DN UP DN UP UP DN UP DN

72.8 DN UP DN DN DN DN DN UP

72.9 DN UP DN UP DN DN DN UP

74.7 UP DN DN UP UP DN DN UP

75.3 UP UP DN UP DN DN DN DN

75.4 UP UP DN DN UP DN DN DN

75.5 UP UP DN UP UP DN DN DN

75.7 UP UP DN UP DN DN UP DN

75.9 UP UP DN UP UP DN UP DN

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Battery

Compartment