CMX UHF-300 Operation Manual Download Page 21

UHF-300 Wireless Conference System 

  20 

3. UHF-300 System Trouble shooting 

Situation 

Check 

Solutions 

The  microphone  unit  shut  off 

automatically 

 

Check the battery capacity 

 

 The batteries must be charged 

before initial use 

 Charge before use 

The receiver unit is not turn on. 

 

Is  power  plug  inserted  into  the 

outlet? 

  Insert  power  plug  into  the 

outlet 

Microphone  can  not  turned  on 

properly 

 

Is  the  correct  data  channel 

number set 

 

Is the receiver antenna installed 

correct 

Is there any obstruction between 

the 

microphone 

unit 

and 

receiver, 

or 

the 

distance 

between  the  microphone  and 

receiver is too far. 

 

Is any inference of the frequency 

 Receiver and microphone data 

channel should be same 

  Install  the  antenna  in  correct 

position. 

    Install  externed  antenna  or 

antenna amplifier 

 Set the new data channel and   

audio channel. 

More than 1 microphone turned 

on/off at the same time 

 

Is  the  microphone  ID  number   

same 

 Set the ID number    again 

 

Operating 

time 

of 

the 

microphone  unit  battery  is 

short. 

 

 

 

The battery is dying (*1) 

 

Purchase a new battery 

The  microphone  unit  battery 

can not be charged. 

 

The  charging  lamp  does  not 

light 

 

The charging lamp is flashing 

 

Charging  does  not  complete 

after 12 hours 

 

 

Are the charging terminals dirty? 

 

Has  the  battery  been  left  for  a 

long time after charging? 

 

Can other batteries be charged? 

 

Clean the charging terminals

 

 

Replace it with new one 

 

 

 

*1. The battery life is usually approximately 300 charge cycles. 

*2. If battery capacity display in microphone LCD is flash, it means that battery capacity is low, user 

should turn off that mic and charge the battery. 

*3. Take out the battery if the microphone will not use for a long time.   

 

 

 

 

 

 

Guangzhou CMX Audio Co., Limited 

1004 RM, 9 Block, North Media, Asia Games Town, Panyu, Guangzhou, China 511447 

Web: 

www.cmxaudio.com

    E-mail:

 [email protected]

   Tel: +0086-20-39125019 

 

Specifications may change without pre-notice. 

Summary of Contents for UHF-300

Page 1: ...UHF 300 WIRELESS CONFERENCE SYSTEM Version REV1 0 2017 OPERATION MANUAL...

Page 2: ...rameter of battery charge 8 1 5 Wireless meeting system Lithium battery 8 1 5 1 Picture of the actual object 8 1 5 2 Features of Lithium battery 8 1 5 3 Schematic diagram of Lithium battery 8 1 5 4 Pa...

Page 3: ...e same time Microphones can be operated on either their built in rechargeable batteries Battery life approx 8 hours during speech and approx 30 hours when standby Wireless communication system elimina...

Page 4: ...300MC Power switch RF Audio Level indicator First channel only for chairman mic the last four channels for delegate mic Volume knob of chairman microphone Channel 1 Volume knob of delegate microphone...

Page 5: ...ystem receiver unit UHF 300MC Items Parameter Audio channel Transmission method UHF Wireless two way Audio channel 5 1 chairman 4 delegate Carrier frequency band 610MHz 665MHz Modulation method FM Rec...

Page 6: ...off the power or in standby if receiver powered off 1 3 3 Features of wireless chairman microphone UHF 300CU Including the functions of the delegate unit chairman unit has other following functions C...

Page 7: ...y band 610MHz 665MHz Modulation method FM Maximum modulation 60KHz Radiant power 9dBm Frequency deviation 0 002 Frequency response 50Hz 15KHz S N Ratio 85dB T H D 0 8 Data control channel Transmission...

Page 8: ...6 PCS of lithium battery per charging c Intelligent charging management electro circuit to protect the LIP battery d Equipped with extendable handle and pulley easy for moving 1 4 3 Schematic diagram...

Page 9: ...eless meeting system LIP battery UHF 300LB 1 5 1 Picture of the actual object 1 5 2 Features of Lithium battery UHF 300LB a Excellent safety performance light weight High capacity ratio b Improved saf...

Page 10: ...e Receiver unit Battery charger Do not place anything on the power cables Do not route them under a rug or furniture Receiver unit Battery charger Do not cover the units with cloth or place them in lo...

Page 11: ...d properly Periodically clean the charging terminals The battery charger may become hot during charging Use it in a well ventilated area After the battery is fully charged turn off the battery charger...

Page 12: ...ption Model No Max Qty Marks Receiver Unit 1 Chairman Microphone 1 Delegate Microphone 999 Data Control Antenna 1 Audio Control Antenna 3 Battery Charger LIP Battery 2 3 Installation and connection of...

Page 13: ...RF antenna B 652 50MHz Please note Receiver antennas should be connected correct position or system can not work properly 2 3 3 Receiver unit to sound system a Mono output Please connect MIX OUT inter...

Page 14: ...ver unit Please note coaxial cable should be 50 2 4 Installation of wireless microphone unit 2 4 1 Mounting the battery a Mounting battery Put the battery on the bottom side of the microphone unit sli...

Page 15: ...he chairman microphone is turn on while the delegate microphone being turn off until the priority button is released or delegate microphone can not turn on again Mode setting method Press SET key one...

Page 16: ...d please see 1MAX LIMIT setting method 1MAX FIFO System only allowed 1 piece delegate microphones turned on at the same time if other delegate microphone turns on system will turn off the first on mic...

Page 17: ...n in this bandwidth frequency interval is 250 KHz Please note there are 4 audio channel of the delegate microphone in the system so the channel number can not be same d System project setting Press SE...

Page 18: ...a room channel frequency point even the system locked We recommend user to use auto scan function if any interference in each channels System will shut off all microphones include chairman microphone...

Page 19: ...this function Microphone working mode Default mode is LINK User can press VOL switch to FREE mode and press VOL switch to LINK mode In Free mode microphone can be tuned on off any time with communica...

Page 20: ...ecording press to exit recording and play the record file automatically The record file will save in the folder named Record the file format is mp3 Bluetooth In this interface user can use other Bluet...

Page 21: ...rophone turned on off at the same time Is the microphone ID number same Set the ID number again Operating time of the microphone unit battery is short The battery is dying 1 Purchase a new battery The...

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