UWM-2 DUAL CHANNEL UHF WIRELESS LAVALIER MICROPHONE TRANSM TRANSM RECEIVE R ITTER ITTER PRODUCT MANUAL
THANK YOU FOR CHOOSING POLSEN. The Polsen UWM-2 is a camera mountable 100-channel UHF wireless system that can transmit audio up to 300 feet. This wireless mic system is engineered with professional features like headphone monitoring, line input, and frequency agility, which make it ideal for video applications such as interviews, lectures, dialog, and conferences. You can choose from 100 channels to avoid interference. Up to four UWM-2 systems can be deployed simultaneously in the same location.
PREC AUTIONS • Exposure to high sound levels can cause permanent hearing loss. Avoid listening at high volumes for extended periods of time. • Keep this unit away from water and any flammable gases or liquids. • Handle this product with care. • Clean this product with only a soft, dry cloth. • Keep this product away from children. • Use only parts provided by the manufacturer. • All images are for illustrative purposes only.
RECEIVER 1. Antennas 2. Audio output 3. Power indicator 4. Headphone output 5. Power button 6. LCD screen 7. Charging status indicator 8. USB Micro-B charging port 9. Left and right buttons 10. Set button 11. Battery compartment 12. 1/8 in. (3.5 mm) TRS to TRRS cable 13. 1/8 in. (3.5 mm) TRS to dual XLR cable 14. Shoe-mount adapter with 1/4-20 socket 15. Belt clip 4 1. 2. 3. 4. 12. 13. 5. 6. 7. 8. 9. 14. 15. 10. 11.
LCD SCREEN (RECEIVER) 1. Battery indicator 2. Transmitter status indicator (Channel A) 3. RF reception indicator (Transmitter A) 4. Battery status (Transmitter A) 5. Audio level meter (Transmitter A) 6. Channel indicator 7. Output level indicator 8. Audio output mode indicator 9. Transmitter status indicator (Channel B) 10. Channel status indicator 11. RF reception indicator (Transmitter B) 12. Battery status (Transmitter B) 13. Audio level meter (Transmitter B) 1. 8. 2. 3. 9. 10. 11. 4. 12. 5. 6. 7.
TRANSMITTER 1. Antenna 16. Tie clip (×2) 2. Line level input 17. Shoe mount 3. Power indicator 18. Belt clip 4. Mic level input 5. Mute button 6. Power button 7. LCD screen 8. Charging status indicator 9. USB Micro-B charging port 10. Left and right buttons 11. Set button 12. Battery compartment 13. Foam windscreen (×2) 14. Shoe-mount adapter with 1/4-20 socket 15. Omnidirectional lavalier microphone (×2) 6 13. 1. 2. 3. 4. 5. 14. 15. 16. 6. 7. 8. 9. 10. 17. 18. 11. 12.
LCD SCREEN (TRANSMITTER) 1. RF transmission power indicator 2. Mute indicator 3. Transmitter channel selector 4. Low-cut filter 5. Function lock 6. Battery indicator 7. Mic / Line indicator 8. Frequency channel selector / Input level (Gain) 9. Frequency indicator 10. Level meter 1. 10. 2. 3. 4. 5. 6. 7. 8. 9.
I N S TA L L I N G T H E B AT T E R I E S Transmitter and Receiver The transmitter and receiver are each powered by two AA batteries. To install the batteries, follow these steps. 1. Make sure the units are turned off by pressing and holding the power button on all units. 2. Pinch the battery compartment tabs together, and the compartment door will pop open. 3. Insert fresh batteries, following the orientation diagram on the back of the unit. 4.
Tip: Before you record, insert fresh batteries into the transmitter and receiver. Have spare fresh batteries on hand during a session. If you’re using rechargeable batteries, bring extra batteries and a battery charger with you. MOUNTING The transmitter and receiver can be worn attached to a belt or mounted on a camera, or attached to a tripod or articulating arm. Belt Clip Attach the included belt clip by pinching the two ends together and inserting them into the holes on the back of the unit.
Tripod Mounting If you prefer a secure stationary place for the transmitter or receiver, mount it to an accessory with a 1/4-20 mounting screw like a tripod or light stand. 1. Follow the instructions above for attaching the shoe-mount adapter. 2. Use the 1/4-20 socket on the shoe-mount adapter to screw the unit onto a tripod or light stand that has a 1/4-20 mounting screw. BEFORE YOU BEGIN The UWM-2 Dual Channel Wireless System is intuitive and easy to operate.
Make sure to attach the plug with the locking connector to the transmitter and receiver. Fully insert the plug into the jack, and turn the locking collar clockwise until secure. Don’t overtighten the locking connection. O P E R AT I N G R A N G E Each transmitter has a normal operating range of 150 ft. (45.7 m), and 300 ft. (91.4 m) in optimum conditions. An intermittent or weak signal can be an indication that you have reached the maximum operating distance.
INTERFERENCE Radio Frequency (RF) or Electromagnetic (EM) interference can cause buzzing or humming, noise bursts, pops, clicks, and dropouts. The channel status indicator shows whether a channel is usable, or if it has interference that can affect your audio. See Finding an Interference-Free Channel below.
CONNECTING THE RECEIVER 1/8 in. (3.5 mm) TRS to Dual XLR Cable Use this cable to connect the two-channel output of the receiver to a camcorder, portable recorder/mixer, or mixing board. 1/8 in. (3.5 mm) TRS to TRRS Plug the TRS plug with the locking connector into the receiver’s output, and connect the TRRS plug to the audio input of a smartphone, DSLR camera, or computer. Headphones To monitor the audio in real time, plug a headphone with a 3.5 mm connector into the headphone jack.
O P E R AT I N G T H E R E C E I V E R Powering On Press and hold the power button until the screen illuminates. The battery indicator shows the remaining battery power. Setting the Output Signal The receiver can output a mixed stereo signal or a dual mono signal. • Select the mixed stereo signal when there is only one XLR input available on your camera for your audio. • The dual mono signal is good for recording dialog, so each signal is routed to its own channel. To set the output signal: 1.
Important: Both transmitters and the receiver must be set to the same channel. See Setting the Transmitter Channel below. Finding an Interference-Free Channel The channel status indicator shows whether a channel is usable, or if it has excessive interference that will affect your audio. Busy indicates the receiver has detected interference on the channel. Select another channel. Idle indicates there is no interference on that channel.
When the receiver is not connected to the transmitter, the transmitter signal indicator will blink. A steady transmitter indicator means the receiver is connected and receiving signal from the transmitter. To select a transmitter signal: 1. Press the set button repeatedly until one or both transmitter indicators blink. 2. Use the left/right buttons to select transmitter A, B, or both. 3. Press the set button. Important: Each transmitter signal must be set to the same channel as the receiver.
The audio level should be as high as possible without peaking. If the meter rises to the top due to intermittent loud noises or vocal plosives like P and B sounds, it could distort the audio. To remedy peaking audio, see Setting Mic/Line Level Input and Setting Input Volume (Gain) below. O P E R AT I N G T H E T R A N S M I T T E R Setting Signal Strength The transmitter has a selectable high and low RF transmission power setting. L (Low, 15 mW) is ideal when the transmitter is close to the receiver.
To set the signal strength, follow these steps: 1. Press the set button repeatedly until the RF transmission power indicator blinks. 2. Use the left/right buttons to select H (high) or L (low). 3. Press the set button to accept. Setting the Transmitter Channel The transmission channel determines whether the transmitter sends the signal to the receiver on channel A or B. To set the transmitter channel: 1. Press the set button repeatedly until the transmitter channel selector blinks. 2.
Setting Mic/Line Level Input Select mic to use the included lavalier microphone. Select line to transmit the signal from a smartphone, computer, portable recorder, or field mixer. To set the input level: 1. Press the set button repeatedly until the mic/line indicator blinks. 2. Use the left/right buttons to select mic or line. 3. Press the set button or wait for 10 seconds to implement the change.
Setting Input Volume (Gain) VOL The transmitter’s input volume level, or gain, determines the signal level that’s sent to the receiver. For optimum recording levels, see Audio Level above. To set the input volume: 1. Press the set button repeatedly until the volume level indicator blinks. 2. Use the left/right buttons to adjust the volume from 0 to 7. Important! Setting the volume to 0 means no sound is transmitted to the receiver. 3. Press the set button or wait for 10 seconds to accept.
Muting the Transmitter The mute button mutes the input signal to the transmitter. Press the mute button to mute the microphone while another person is speaking, or to prevent the microphone from picking up a separate audio source like programmed music or a video presentation. Locking the Transmitter Activating the transmitter lock prevents accidental changes to the transmitter’s settings while a recording is in progress.
S P E C I F I C AT I O N S SYSTEM 22 WIRELESS TRANSMISSION Analog UHF OPERATING RANGE 150 ft. (39.6 m) 300 ft. (91.4 m) in optimum conditions FREQUENCY RANGE 538.000 to 586.000 MHz INCLUDED TRANSMITTERS 2 × bodypack with lavalier microphone NUMBER OF RF CHANNELS 100 (50 per transmitter channel) DIVERSITY No RF FREQUENCY BAND A: 538.000 to 557.600 MHz B: 556.400 to 586.000 MHz RF BANDWIDTH 48 MHz FREQUENCY STEP SIZE 400 KHz TOTAL HARMONIC DISTORTION <0.8% MAX OPERATING RANGE >100 ft.
TRANSMITTER FORM FACTOR Body pack RF POWER OUTPUT 15 mW, 25 mW AUDIO I/O 1/8 in. (3.5 mm) female line in (lockable) 1/8 in. (3.5 mm) female mic in (lockable) THD 0.
TRANSMITTER (CONT.) 24 APPROXIMATE BATTERY LIFE 8 hours (alkaline) DISPLAY & INDICATORS Backlit LCD (transmitter signal strength, transmission channel, mic/line, channel, volume, low-cut filter, mute) OPERATING TEMPERATURE 32°F to 122°F (0°C to 50°C) DIMENSIONS (H × W × D) 3.5 × 2.4 × 0.9 in. (8.9 × 6.2 × 2.2 cm) WEIGHT 2.8 oz.
RECEIVER FORM FACTOR Camera mount MOUNTING OPTIONS Mounting foot, 1/4-20 threaded socket, belt clip ANTENNA 2 flexible, fixed NUMBER OF AUDIO CHANNELS 2 (mixed, dual mono) AUDIO I/O 1/8 in. (3.5 mm) female lockable 1/8 in. (3.
MICROPHONE 26 TRANSDUCER Back electret condenser POLAR PATTERN Omnidirectional FREQUENCY RESPONSE 50 Hz to 20 kHz SENSITIVITY -37 dB ± IMPEDANCE 2.2 kΩ MAXIMUM SPL 100 dB TOTAL HARMONIC DISTORTION <5% OPERATING VOLTAGE 1 to 5 V HEAD DIAMETER 0.25 in. (0.
F R E Q U E NC Y A L LO C AT I O N C H A R T TRANSMITTER A TRANSMITTER B CHANNEL FREQUENCY FREQUENCY 1 538.000 566.400 TRANSMITTER A TRANSMITTER B CHANNEL FREQUENCY FREQUENCY 15 543.600 572.000 2 538.400 566.800 16 544.000 572.400 3 538.800 567.200 17 544.400 572.800 4 539.200 567.600 18 544.800 573.200 5 539.600 568.000 19 545.200 573.600 6 540.000 568.400 20 545.600 574.000 7 540.400 568.800 21 546.000 574.400 8 540.800 569.200 22 546.400 574.
TRANSMITTER A (CONT.) TRANSMITTER B (CONT.) CHANNEL FREQUENCY FREQUENCY 29 549.200 577.600 30 549.600 578.000 TRANSMITTER A (CONT.) TRANSMITTER B (CONT.) CHANNEL FREQUENCY FREQUENCY 43 554.800 583.200 44 555.200 583.600 31 550.000 578.400 45 555.600 584.000 32 550.400 578.800 46 556.000 584.400 33 550.800 579.200 47 556.400 584.800 34 551.200 579.600 48 556.800 585.200 35 551.600 580.000 49 557.200 585.600 36 552.000 580.400 50 557.600 586.
T R O U B L E S H O OT I NG Problem Solution The audio is noisy or distorted. This can include dropouts, white noise, bursts, pops, and clicks. • Noise might be caused by RF interference. Try a different channel. Make sure both units are on the same channel. • There can be a lot of RF interference outdoors. Try moving indoors, where there is less RF interference. • Keep the units’ antennas at least 2 feet (0.6 m) away from conductive objects like metal and water.
Problem 30 Solution The input level on the camera, recorder, or mixer is too high. • Turn down the audio input level on your camera or recording device. • Decrease the receiver’s output level. • Make sure the output of the receiver is plugged into the line-level input on your mixer, or that the line/mic switch on your mixer is set to line. • Turn down the gain on your mixer. • Adjust the output volume on the transmitter, but keep this level as high as possible without distortion. There is no audio.
Problem Solution Too much ambience is being picked up. • If you’re using an omnidirectional microphone, the microphone may be picking up too much ambience or room noise. • Make sure the microphone is as close as possible to the subject. Approximately 6 inches (15.2 cm) from the subject is usually good microphone placement, but you may need to experiment. • Reduce acoustic reflections in the area by hanging an acoustic blanket, acoustic foam, fabric, or rug over bare walls, floors, and windows.
O N E -Y E A R L I M I T E D WA R R A N T Y This Polsen product is warranted to the original purchaser to be free from defects in materials and workmanship under normal consumer use for a period of one (1) year from the original purchase date or thirty (30) days after replacement, whichever occurs later.
