TOA Electronics Microphone WM 4310 User Manual

OPERATING INSTRUCTIONS  
UHF WIRELESS MICROPHONE  
WM-4310  
WM-4310A  
WM-4310H  
Please follow the instructions in this manual to obtain the optimum results from this unit.  
We also recommend that you keep this manual handy for future reference.  
TABLE OF CONTENTS  
1. SAFETY PRECAUTIONS ............................................................................... 2  
2. GENERAL DESCRIPTION ............................................................................ 3  
3. FEATURES ......................................................................................................... 3  
4. HANDLING PRECAUTIONS ......................................................................... 3  
5. NOMENCLATURE ............................................................................................ 4  
6. BATTERY INSERTION .................................................................................... 5  
7. OPERATION ....................................................................................................... 5  
8. OPERATIONAL HINTS ................................................................................... 6  
9. DISTANCE BETWEEN THE MICROPHONE AND THE MOUTH ...... 6  
10. CHANNEL NUMBER SETTING ................................................................... 6  
11. AUDIO LEVEL ADJUSTMENT (SENSITIVITY CONTROL) ................ 6  
12. LICENSE REQUIREMENT ............................................................................ 7  
13. SPECIFICATIONS ............................................................................................ 7  
Accessories ............................................................................................................. 7  
 
2. GENERAL DESCRIPTION  
The wireless microphone WM-4310 is of lavalier type, while the WM-4310A and WM-4310H are of headset  
type, and all are designed for use on UHF band.  
The WM-4310/-4310A/-4310H accommodate the supplied microphone unit or headset with a cardioid pick-up  
pattern and are suitable for speech reinforcement applications. The built-in circuitry is so designed to minimize  
the influence from ambient noise.  
The WM-4310A differs from the WM-4310H in that the WM-4310A features sweat-proof design and is  
supplied with a waist pouch.  
3. FEATURES  
• One frequency can be selected from 16 operating frequencies of 16 frequencies of 690 – 865 MHz.  
• An optimized PLL-synthesizer minimizes the oscillation frequency drift resulting from the ambient  
temperature or voltage fluctuation.  
• Audio level control adjusts the microphone sensitivity.  
• Battery lamp indicates battery consumption to prevent the unit from malfunctioning when the battery level  
remarkably decreases.  
• Compact size and high reliability  
• Sweat-proof handset with an adjustable fixing band is exclusively designed for use by aerobics instructors.  
(WM-4310A only)  
4. HANDLING PRECAUTIONS  
• Do not expose the unit to rain or an environment where it may be splashed by water or other liquids, as  
doing so may result in unit failure.  
• Never open nor remove the unit case to modify the unit. Refer all servicing to your nearest TOA dealer.  
• Take care not to drop the unit onto the floor nor bump it against a hard object as the unit could fail.  
• Do not place the unit in locations of high temperature (ex. in a car parked in summer) or high humidity as the  
unit could fail.  
• Do not use the unit in locations where it is exposed to seawater.  
• To clean, use a dry cloth. When the unit gets very dirty, wipe lightly with a cloth damped in a dilute neutral  
cleanser, then wipe with a dry cloth. Never use benzine, thinner, or chemically-treated cleaning towel.  
• Avoid using a mobile telephone near the wireless microphone in use. Noise could be picked up.  
3
 
5. NOMENCLATURE  
[ Main unit ]  
[ Microphone unit ] (WM-4310 only)  
Power/Battery lamp  
(Orange LED)  
Tie-clip attachment  
32  
23.5  
Power ON/OFF  
switch (push lock)  
This part  
rotates 360°.  
Crip  
Plug lock  
62  
Clip  
(Rotates 360°.)  
ø3.5  
Audio level control  
Channel select switch  
[ Waist pouch ] (WM-4310A only)  
[ Headset ] (WM-4310A only)  
Adjustable band  
Gooseneck  
Windscreen  
Plug lock  
ø3.5  
Microphone  
[ Headset ] (WM-4310H only)  
Gooseneck  
Plug lock  
Windscreen  
ø3.5  
Unit: mm  
Microphone  
4
 
6. BATTERY INSERTION  
Step 1. Holding the microphone body, slide  
the battery cover down to open it. The  
battery cover is designed not to be  
removed from the body.  
1
Step 2. Insert the battery 6LR61 (Alkaline 9 V) according to the instructions attached  
to the inside of the battery compartment. Pay attention to the correct polarity  
when inserting the battery.  
2
Step 3. Replace the battery cover.  
Battery replacement  
• A brand-new battery will provide the power enough to operate the unit  
continuously for 10 hours.  
• As long as the battery has sufficient power for the microphone to function  
properly, the orange LED will light. When the orange LED starts to fade and  
then flash, replace it with a new one.  
Power/Battery lamp  
(Orange LED)  
7. OPERATION  
Step 1. Plug the microphone's plug into the input connector as illustrated.  
Step 2. Make sure that the receiver and the wireless microphone are of the same channel (frequency).  
Step 3. If they are not identical in channel, you have to adjust the channel switch.  
Step 4. Press the microphone ON/OFF switch to turn on the microphone.  
The orange LED indicates the circuit is active.  
As for the WM-4310A, insert the main unit into the waist pouch as indicated by the arrow. The main  
unit's power switch should be located under the switch indication position (SW mark) of the pouch.  
When turning on the microphone, press SW mark on the pouch.  
Step 5. Make sure to press the ON/OFF switch again to turn off the microphone after using.  
Power switch position mark  
4
Plug lock  
1
Secure the connection  
with the plug lock.  
Illustration for WM-4310A  
5
 
8. OPERATIONAL HINTS  
• The microphone's service distance is 3 – 120 m. When the microphone user moves in a facility, signal  
dropouts (momentary losses of signal reception) may be encountered. These dropouts are caused by the  
building's architectural designs or materials which block the travel of or reflect the radio signal. If this occurs,  
the user needs to change locations for better signal reception.  
• The proper operation of your wireless system may be interfered with by other system operating on the same  
frequency. In such cases, change the operating frequency of your system. (As to dealing with the  
interference, refer to the operating instructions of the wireless tuner.)  
• Should you have any questions regarding the use or availability of TOA wireless products, please contact  
your local TOA dealer.  
9. DISTANCE BETWEEN THE MICROPHONE AND THE MOUTH  
[Lavalier type version (WA-4310)]  
Keep your mouth 15-20 cm away from the microphone for the best possible sound reproduction. Take care  
not to bring your mouth too close to the microphone (within 5 cm) as this impairs speech clarity if you speak  
loudly.  
[Headset type version (WA-4310A, WA-4310H)]  
By adjusting the gooseneck, locate the microphone with the supplied windscreen in front of your mouth, and  
position it 3-5 cm away from your mouth for the best sound reproduction. When the microphone is too close to  
your mouth or you speak too loud, speech clarity will be impaired, making it hard for the audience to hear  
announcements.  
10. CHANNEL NUMBER SETTING  
Step 1. Slide the battery cover down to open it.  
2
Step 2. Using the supplied screwdriver, set the Channel setting  
switch pointer to the desired channel number.  
Step 3. Replace the battery cover.  
Note: Make sure that the wireless microphone is identical to the wireless tuner in the channel number.  
Should the microphone's setting differ from that of the tuner, the tuner does not receive the  
microphone signal.  
11. AUDIO LEVEL ADJUSTMENT (SENSITIVITY CONTROL)  
To change the factory-preset level, follow the procedures below.  
Step 1. Holding the microphone body, slide the battery cover down  
to open it. The battery cover is designed not to be removed  
from the body.  
Audio level control  
3
Step 2. Switch on the power of the tuner and microphone.  
Step 3. Adjust the audio level control using the supplied screwdriver.  
The microphone sensitivity increases as the control is rotated  
clockwise, and decrease as rotated counterclockwise.  
6
 
Step 4. Adjust the corresponding tuner's volume control so that its knob points to the 2 o'clock position. If the  
tuner's AF PEAK indicator remains lit, readjust the microphone's audio level control to the position  
that causes the indicator to flash when the tuner output level reaches its peak. The AF PEAK indicator  
lights when the output level reaches the point of about 3 dB below the clipping level.  
Note  
The AF PEAK indicator operates in response to the volume control position.  
However, the AF LEVEL indicator (on the WT-4810) indicates the level regardless of the volume  
control setting.  
Step 5. Replace the battery cover.  
12. LICENSE REQUIREMENT  
Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and (2) this device must accept any interference received,  
including interference that may cause undesired operation.  
13. SPECIFICATIONS  
[ WM-4310 ]  
Microphone Element  
Emission  
Electret condenser type, cardioid pattern  
F3E  
Frequency Range  
Selectable Channel  
RF Carrier Power  
Tone Frequency  
Modulation System  
Maximum Input Level  
Battery  
690 – 865 MHz, UHF  
16 channels  
Less than 50 mW  
32.768 kHz  
PLL synthesizer  
120 dB SPL  
6LR61 (9 V x 1)  
Battery Life  
10 hours (alkaline)  
Power/Battery lamp (common use)  
1/4 λ herical type  
Indicator  
Antenna  
Operating Temperature  
Finish  
–10 to +50°C  
Resin, coating, dark gray  
62 (w) x 142 (h) x 32 (d) mm  
150 g (with battery)  
Dimensions  
Weight  
Note: The design and specifications are subject to change without notice for improvement.  
• Accessories  
Screwdriver (for setting) .................................... 1  
Channel identification seal ................................ 1  
Storage case ..................................................... 1  
7
 
[ WM-4310A, WM-4310H ]  
Main unit  
Emission  
F3E  
Frequency Range  
Selectable Channel  
RF Carrier Power  
Tone Frequency  
Modulation System  
Maximum Input Level  
Battery  
690 – 865 MHz, UHF  
16 channels  
Less than 50 mW  
32.768 kHz  
PLL synthesizer  
120 dB SPL  
6LR61 (9 V x 1)  
Battery Life  
10 hours (alkaline)  
Power/Battery lamp (common use)  
1/4 λ herical type  
–10 to +50°C  
Indicator  
Antenna  
Operating Temperature  
Finish  
Resin, coating, dark gray  
62 (w) x 142 (h) x 32 (d) mm  
150 g (with battery)  
Dimensions  
Weight  
Headset  
Microphone Element  
Power Source  
Output Impedance  
Cable Length  
Connector  
Electret type, cardioid pattern  
DC (supplied from lavalier pack)  
1.6 k± 30% (1,000 Hz)  
1.45 m  
ø3.5 mm mini-plug  
Note: The design and specifications are subject to change without notice for improvement.  
• Accessories  
Screwdriver (for setting) .................................... 1  
Channel identification seal ................................ 1  
Waist pouch (WM-4310A only) ......................... 1  
Printed in Taiwan  
133-07-182-30  
 

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