MANUAL AND USER GUIDE HEARING HELPER™ Personal FM System Wireless FM Listening System Models PFM 350, PFM 300, PFM 350E RCH, & PFM 300E RCH Transmitter Model PFM T32 Optional Receiver Models PFM R32, R31 MAN 072H
HEARING HELPER™ PERSONAL FM SYSTEM MODELS PFM 350, PFM 300, PFM 350E RCH, PFM 300E RCH INSTALLATION GUIDE & USER MANUAL Contents Page SYSTEM OVERVIEW 3 SYSTEM COMPONENTS 4 SAFETY INFORMATION 5 RECYCLING INSTRUCTIONS 5 OPERATING INSTRUCTIONS PFM T32 6 TRANSMITTER PFM R32 RECEIVER 9 PFM R31 RECEIVER 10 BATTERY INFORMATION BATTERY INSTALLATION RECHARGEABLE USING 2 13 AND NON-RECHARGEABLE BATTERIES OPTIONAL CHG 200 BATTERY CHARGER 13 14 USING YOUR PERSONAL FM SYSTEM WITH A HEARING AID
SYSTEM OVERVIEW Thank you for purchasing the Hearing Helper™ Personal FM System from Williams Sound Corp. 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.
SYSTEM COMPONENTS Body Pack Transmitter (PFM T32) with (2) AA batteries (BAT 001) Lavalier microphone (MIC 090) Mini earphone (EAR 013) Soft Nylon System Carry Case (CCS 020) (2) Belt clip cases (CCS 001) Instructions (MAN 072) PFM System 300 Only: Personal FM Receiver (PFM R32) with (2) AA batteries (BAT 001) PFM System 350 Only: Personal FM Receiver (PFM R31) with Plug Mount Microphone (MIC 014) and (2) AA batteries (BAT 001) PFM System 300E RCH Only: Personal FM Receive
SAFETY INFORMATION HEARING SAFETY CAUTION! This product is designed to amplify sounds to a high volume level which could potentially cause hearing damage if used improperly. To protect your hearing and the hearing of others: 1. Make sure the volume is turned down before putting on the earphone or headphone before adjusting the volume to a comfortable level. 2. Set the volume level at the minimum setting that you need to hear. 3.
USING THE PFM T32 TRANSMITTER 1. Install two (2) AA batteries. If you’re using rechargeable batteries, they must be charged before using. See battery information on page 13. 2. Plug the microphone cord into the “Mic” jack on top of the transmitter. FIGURE 3: T32 TOP VIEW 3. Place the transmitter in the belt clip case provided. 4. Slide the Power Switch on top of the transmitter to “On.” The Power ON LED indicator should illuminate Red. 5.
CHANGING THE PFM T32 FREQUENCY FIG. 5: PFM T32 FREQUENCY CHANGE By default, the T32’s frequency is to set 72.9 MHz (Channel E). If you experience FM interference, or if you need to match a receiver’s frequency, it may be necessary to adjust the frequency on the T32. Instructions: 1. Open the battery compartment using a coin in the slot in the bottom of the transmitter. Remove the batteries. 2. Lift the battery compartment door up and pull to your left to expose the circuit board. 3.
ADVANCED FEATURES ON THE PFM T32 Gain Control Adjustment If necessary, the microphone gain control on the T32 can be increased or decreased to meet the demands of specific listening applications. FIG. 6: T32 ADVANCED FEATURES Instructions: 1. Open the battery compartment using a coin in the slot in the bottom of the transmitter. Remove the batteries. 2. Lift the battery compartment door up and pull to your left to expose the circuit board. 3. Refer to FIG 6 to locate the microphone gain control. 4.
USING THE PFM R32 RECEIVER (PFM 300 & PFM 300E RCH): Receiver model PFM R32 has a single volume control and an earphone output jack. 1. Make sure there are two charged AA batteries in the Receiver. If batteries are not installed, see Battery Information on page 13. 2. Plug the earphone or headphone into the “Ear” jack on top of the Receiver. FIGURE 7: R32 RECEIVER TOP VIEW Earphone Jack FM Indicator FM EAR FM Off On Indicator On Volume Control Max 3.
USING THE PFM R31 RECEIVER (PFM 350 & PFM 350E RCH): Receiver model PFM R31 has two volume control knobs (one for the FM signal, one for environmental sounds), a microphone input jack, and an earphone output jack. 1. Make sure there are two charged AA batteries in the Receiver. If batteries are not installed, see Battery Information on page 13. 2. Insert the small Plug Mount Microphone (MIC 014) into the “Mic” jack on top of the R31 Receiver.
Notes: The earphone cord is the receiving antenna. Do not bunch up the cord or wrap it around the receiver. For best reception, the cord should hang as straight as possible. Make sure the Receiver is turned OFF when not in use. The channel selector can be used to switch between an individual and a group channel. Adjusting The R31 Volume Controls 1. Adjust the taller “FM” volume control to a comfortable listening level. You should be able to hear someone speaking into the Transmitter microphone. 2.
TUNING THE PFM R32 & R31 RECEIVERS Tuning for the R32 and R31 Receivers is determined by tuning coils, and is stabilized by phaselocked-loop circuitry. A plastic tuning wrench (PLT 005) 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.
BATTERY INFORMATION INSTALLATION Open the battery compartment using a coin in the slot in the bottom of the receiver or transmitter. Press the batteries into place, observing proper battery polarity. Incorrect insertion of the battery is difficult, and if forced, may cause both mechanical and electrical damage to transmitters or receivers not covered by the five year warranty. Units will not work with the battery incorrectly installed.
FIGURE 13: USING THE OPTIONAL CHG 200A BATTERY CHARGER TO CHARGE TRANSMITTERS AND RECEIVERS Step 1: Plug the CHG 200’s power supply into the Power Input on the charger’s side and a standard AC wall outlet. Step 2: Route the power cord around the Cord Hook (see figure at right). This will minimize strain on the cord and jack and insure that the power cord is not detached during charging. Step 3: Make sure the receivers/transmitters to be charged are turned OFF.
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–children’s size, or NKL 001–adult’s size) to magnetically couple the signal from the PFM Receiver into your hearing aid. The Neckloop plugs into the earphone jack of the receiver. Turn the switch to the “T” position on your hearing aid and adjust the volume control on the receiver to a comfortable level.
IN CASE OF DIFFICULTY If your Personal FM System is not working, check the following: 1. Read through the manual and user guide carefully to verify proper setup and installation of your system. 2. Make sure the batteries are fresh or completely charged and that the “plus” and “minus” terminals are installed correctly. 3. If the rechargeable batteries will only work for a short period of time (less than 1 hour) even after they are fully charged, they must be regenerated.
Limited Warranty Williams Sound products are engineered, designed, and manufactured under carefully controlled conditions to provide you with many years of reliable service. Williams Sound warrants the Hearing Helper® Personal FM System against defects in materials and workmanship for FIVE (5) years. During the first five years from the purchase date, we will promptly repair or replace the Hearing Helper® Personal FM System.
TECHNICAL SPECIFICATIONS FM TRANSMITTER, MODEL PFM T32 Dimensions: Weight: Color: Battery Type: Operating Freq’s: Stability: Modulation: RF Output: Freq Response: Signal-to-Noise Ratio: Microphone Gain Control: Transmit Antenna: Microphone: Controls: Mic Connector: Compatible Receivers: Approvals: Warranty: Note: 3-5/8" L x 2-3/8" W x 7/8" H (92.1 mm x 60.3 mm x 22.2 mm) 4.4 oz (125 g) with battery Royal blue, shatter-resistant polypropylene Two (2) AA 1.
ACOUSTIC SPECIFICATIONS ANSI 2.44 TEST ANSI S3.22–1987 TEST FM Response (PFM R31, R32) MINIMUM LOW CUT (TONE SET Max. SSPL90: HF Avg SSPL90: HF Avg Full On Gain: Reference Test Gain: Response Limit: Total Harmonic Dist: FM Response (PFM R31, R32) Input: Device: Y: X: 80 dB random noise KEMAR mannequin with BTK 3550 Tester 80.0 dB 80 db Main Y: 34.1 dB 100 Hz + 8 OCT LOG Main X: 4 kHz TO LOW) 135.8 dB at 500 Hz 127.1 dB 37.7 dB at 60 dB in 38.1 dB 80.1 dB F1=200 Hz, F2=8 kHz 3.6 % at 500 Hz 3.
© 2007, Williams Sound Corp.
