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Received Signal is Noisy or 

Contains Extraneous Sounds 

with the Microphone(s) ON

There is Noise Coming from 

the Receiver with the Micro-

phones Turned OFF

Momentary Loss of Sound 

as Microphone(s) are 

Moved Throughout the 

Operating Range

Battery Running Low Even 

After Recharging

No Sound Output

Troubleshooting

Make sure the microphone and receiver power switches are 

set to the ON position.

Check microphone batteries to ensure that they are providing 

sufficient power. Let battery charge or replace if necessary.

Check receiver’s AC power connection.

Make sure antennas are firmly connected and angled to 

optimal positions.

If necessary, reduce the distance between the microphones 

and receiver.

Turn up the receiver’s VOLUME level controls.

Check for proper connection between receiver and external 

amplifier/mixer.

Talk into the microphone and observe the receiver’s signal 

LED’s on the display screen. If they glow, the problem is 

elsewhere in the sound system.

Check microphone(s) batteries and recharge or replace if the 

charge is low.

Remove local sources of UHF interference, such as lighting 

equipment.

Signal may be too weak. If so, reposition antennas. If 

possible, move them closer to the transmitter.

Remove local sources of UHF interference, such as lighting 

equipment.

Reposition the receiver or antennas.

Reposition the receiver, perform a “walkthrough”, and 

observe the signal strengths. If audio dropouts persist, 

mark these “dead spots” in the operating area and avoid 

them during the performance.

Replace rechargeable batteries (rechargeable batteries have 

a life of 500 hours of charging and recharging).

PROBLEM

POSSIBLE SOLUTION(S)

Содержание UHF-388

Страница 1: ...POWER ANT A CHARGING CHANNEL A ANT B CHARGING CHANNEL B RECHARGEABLE UHF WIRELESS MIC SYSTEM UHF 388 POWER ON OFF UHF 3700 POWER ON OFF UHF 3700 OWNER S MANUAL ...

Страница 2: ...ou below VocoPro 1728 Curtiss Court La Verne CA 91750 Toll Free 800 678 5348 TEL 909 593 8893 FAX 909 593 8890 Customer Service General Information info vocopro com Tech Support techsupport vocopro com Remember Our Website Be sure to visit the VocoPro website www vocopro com for the latest information on new products packages and promos And while you re there don t forget to check out our Club Voc...

Страница 3: ...structions FCC Information Listening for a Lifetime Specifications and Features Getting started Getting Connected Controls and Functions Front Panel Rear Panel Microphone Microphone Basics Operations Troubleshooting 2 3 4 5 6 8 9 9 10 11 12 13 ...

Страница 4: ... other appliances including amplifiers that produce heat 10 Power Sources The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance 11 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of an appliance is not defeated 12 Power Cord Protection Power supply cords should be ...

Страница 5: ...e CA 91750 1 To ensure the finest performance please read this manual carefully Keep it in a safe place for future reference 2 Install your unit in a cool dry clean place away from windows heat sources and too much vibration dust moisture or cold Avoid sources of hum transformers v motors To prevent fire or electrical shock do not expose to rain and water 3 Do not operate the unit upside down 4 Ne...

Страница 6: ...dial and leave it there Pay attention to the different levels in various recordings Taking a minute to do this now will help to prevent hearing damage or loss in the future After all we want you listening for a lifetime Used wisely your new sound equipment will provide a lifetime of fun and enjoyment Since hearing damage from loud noise is often undetectable until it is too late this manufacturer ...

Страница 7: ...Outputs Individual Balanced XLR outputs and single mixed output Specifications and Features Reciever Frequency Stability 0 005 S N Ratio 100dB RF Sensitivity 107dBM 12dB S N AD Image Rejection 60dB T H D 1 KHz 60dB Display VFD Controls Power ON OFF Volume controls Audio Output Level 12dB AF Output Impedence 2 2Ω Unbalanced Operation Voltage 14 18V DC 800mA Output Connector 2 balanced XLR 1 unbalanc...

Страница 8: ... the micro phones NOTE Do not place the UHF 388 in a space where there is something above the antennas such as a rackspace or an entertainment center ANT B CHANNEL B Fig B Close up of Antenna BNC Fig C Close up of BNC Input on Face of UHF 388 Line up the slots on the antenna s BNC connector Fig B with the pegs on the receiver s BNC inputs Fig C and push in Twist the antennas BNC connector clockwis...

Страница 9: ...reless microphone installation is a unique situation and can present a variety of problems Never attempt a live performance without first conducting a walkthrough test of the system in the performing area If major changes additional wireless systems or intercoms relocation of scenery etc have been made since the last walk through test check the wireless system again as close to performance time as...

Страница 10: ...e are a number of ways to integrate the UHF 388 into your audio system Using a cable connect the MIXED output to a mic input on your all in one system Fig J Connect each mic channel to separate channels on the mixer using the BALANCED XLR outputs Fig G or output both channels to a single input using the MIXED output Fig H Connecting to a Mixer Connecting to an All In One System Fig G Fig H Fig J ...

Страница 11: ...ach mic channel Turn clockwise to raise vol ume and counter clockwise to lower the volume DISPLAY screen Displays the signal level of each mic channel BALANCED A and B outputs Outputs each mic channel independently using a balanced XLR microphone cable MIXED output Outputs both mic channels together using a microphone cable AC POWER connection Main power jack for connection to an AC electrical out...

Страница 12: ...ower is on The light will be off when the mic is turned off or when the battery is dead POWER switch Used to turn the microphone power ON and OFF The mic power is ON when the switch is in the ON position and the power is OFF when the switch is in the OFF position BATTERY COMPARTMENT Removable lid hides and protects the microphone batteries MICROPHONE 1 2 3 4 Controls and Functions Cont ...

Страница 13: ...o the microphone Each time this distance is halved the sound system output will increase by 6dB Reduce the number of open microphones Move the loudspeaker farther away from the microphone Each time this distance is doubled the sound system output can be increased by 6dB Move the loudspeaker closer to the listener Use an equalizer feedback reducer to cut the frequency bands in which the feedback oc...

Страница 14: ...e and counter clockwise to lower the volume POWER ANT A CHARGING CHANNEL A ANT B CHARGING CHANNEL B RECHARGEABLE UHF WIRELESS MIC SYSTEM UHF 388 Place the mics in the charger compartments on top of the UHF 388 s receiver Make sure to position the mics with the power switch facing out towards the front of the receiver The charging LED on the receiver will light up when the mic is inserted correctly...

Страница 15: ...ver s VOLUME level controls Check for proper connection between receiver and external amplifier mixer Talk into the microphone and observe the receiver s signal LED s on the display screen If they glow the problem is elsewhere in the sound system Check microphone s batteries and recharge or replace if the charge is low Remove local sources of UHF interference such as lighting equipment Signal may ...

Страница 16: ...UHF 388 MANUAL 2006 VOCOPRO WWW VOCOPRO COM ...

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