BIETRUN WXM28 UHF
Professional 2 Channels Rechargeable Wireless Microphone System
User Manual
If you have any questions, please feel free to contact us. E-mail: [email protected]
Product introduction
This UHF Professional 2-Channels Rechargeable Wireless Microphone System uses UHF frequency band transmission, which has the characteristics of long transmission distance, strong anti-interference ability, low delay, and clear sound quality. It is easy to use and operate.
Note: Please read and follow all warnings carefully before use, and keep this manual for subsequent use.
Product description
Bodypack Headset Transmitter Mic A
| Serial NO. | Part Name | Function Description | Notes |
| 1 | Mic input port | (1)Plug in a headset microphone to pick up sound; (2)The microphone adopts a nut structure to make the connection firmer. | (1)The microphone should be pointed towards the mouth as much as possible. and the distance from the mouth should be as short as possible: (2)lighten the headset mic as much as possible. |
| 2 | Power button | Power on/off: Press and hold to turn on, long press to turn off. | |
| 3 | Display screen | Information about microphone: power, signal, channel, volume, microphone A. | When Changes to Hand blinks,it needs to charge |
| 4 | Charging indicator | The charging indicator light is red in the charging state. and it lights up green when fully charged: | |
| 5 | Charging port | Connect an external DC 5V power supply to charge the transmitter. | (1)Please charge when the transmitter cannot be turned on, (2)When its not used for a long time. make sure that its charged at least once a month to ensure battery activity |
| 6,7 | Frequency switch button | (1)Press “CH+” to increase the current channel, press”CH+” to decrease the current volume (2)When there is interference in the same frequency band with other equipment or large environmental interference. you can press this button to change and adjust the transmitter frequency. There are 15 channels in total. (3)When adjusting the frequency. the blue indicator light of the receiver will flicker. After the frequency is matched, the blue light wit is on again. | no need to adjust frequency under normal circumstances |
| 8,9 | Volume + / Volume – | (1)Press to increase the current volume (2)Press to decrease the current volume | The maximum volume of this machine is level 5, and the lowest level is level 1. |
Handheld Mic B
No. | Part Name | Function Description | Notes |
| 1 | Microphone | Pickup voice | |
| 2 | Display | (1)Information about microphone: power, signal, channel, volume, microphone B; (2)Only battery level wil be displayed after 5 seconds of no operation on the microphone. | |
| 3 | Power
| (1)Power on/off: Press and hold to turn on. long press to turn off; (2)Volume: Short press to adjust the volume in turn. 1-5 levels, level 1 is the smallest, and level 5 is the largest. | |
| 4 | Channel | Press this button to adjust the channel, 15 channels in total. | Press this button to switch channels when the connection is unstable. |
| 6 | Charging port | External DC 5V power supply charges the product. | (1)Charge it once before your first use; (2)Charge it with low power. |
| 6 | Indicator light | (1)Green: the microphone is on, (2)Red flash: low power: (3)Red: charging; Red light is off when fully charged. |
No. | Part Name | Function Description | Notes | |
| 1 | Power | Press I to turn on, so” to turn off | ||
| 2 | Mic A volume | Turn left to decrease the volume, turn right to increase the volume. | ||
| 3 | Mic B volume | |||
| 5 | LCD Display
| RF | Wireless signal |
|
| AF | Audio signal | |||
 | Power level | |||
 | Flash: to be connected Slay on: Connection is successful | |||
| VOL | Volume | |||
| FREQUENCY | Microphone Frequency | |||
| 5+11 | Antenna | Receive wireless microphone | signals A and B | (1) Please tighten the nut to the right of the antenna before turning it on for the first time 2) When the connection is unstable and the Sound is intermittent, you can adjust the antenna direction to improve it. |
| 6 | Mic B Output | The audio output port of microphone B | This port only outputs the audio signal of microphone B | |
| 7 | 6.35mm Audio Output | 6.35mm audio output interface | The audio is a mixture of AB microphone | |
| 8 | 3.5mm Audio Output | 3.5mm audio output interface | The audio is mixed by an AB microphone, and the Bluetooth audio is a stereo output | |
| 9 | Charging port | The input voltage is DC 12V Please | Please use the adapter provided with the product | |
| 10 | Mic A Output | The audio output port of microphone A | only outputs the audio signal of This port microphone | |
| 12 | Bluetooth antenna | Receive Bluetooth wireless signal | Please tighten the nut to the right of the antenna before turning it on for the first time | |
3.1 Bluetooth connection
For smart devices with Bluetooth audio, search for the Bluetooth name “Bietrun” of this product in the Bluetooth device list and connect it. The audio output from Bluetooth is stereo audio. If the Bluetooth connection is successful, there will be a prompt, and the Bluetooth logo on the display of the receiver will stay on.
3.2 Output connection
Audio amplifier devices with XLR interface, 6.35mm and 3.5mm audio input interfaces can be connected to this product, including mixers, multimedia speakers, Bluetooth speakers, power amplifiers, and lever speakers. 
Note: signals can be connected to different amplifying devices, but not to the same device. otherwise, the sound may not be played normally.
FQA
| No. | Problems | Solutions |
| 1 | The receiver can’t be turned on | (1)Check whether the power is turned on, whether the power button is pressed to the “I” position; (2)Check whether the adapter and cable are connected with the receiver correctly and firmly. |
| 2 | Microphones can’t be turned on | (1)Charge first and check whether the mic charging indicator is on; (2)Press and hold the power button for 2 seconds to turn on, and the short press can not turn on. |
| 3 | No sound | (1)Check whether the volume of the microphone, amplifier, and Bluetooth devices have been turned on; (2)Check whether the microphone is successful), connected to the receiver, the display will be on if the connection is successful; (3)Turn up the volume of the receiver; (4)Check the XLR interface. 6.35 interface, 3.5mm interface are connected correctly; (5)The amplifying device may need to set the input mode, please refer to the manual of the amplifying device for setting; (6)When the Bluetooth is silent, check whether the Bluetooth device is connected to the receiver and whether the volume of the Bluetooth device is turned on. |
| 4 | Small sound | (1)Adjust the VOL button on the microphone to increase the volume. 1 is the minimum, 5 is the maximum; (2)Turn the knob to the right to increase the microphone volume on the receiver; (3)Turn up the volume of the amplifier. |
| 5 | Intermittent sound | (1)Shorten the distance between the microphone and the receiver(within 50M, with No obstacle) (2)Shorten the distance between the Bluetooth device and the receiver(within 10M, with No obstacle) (3)Switch channel |
| Howling or screaming | (1)Reduce the volume of amplifier or microphones; (2)Don’t place the microphones to dose to the speaker. |
Parameter
Receiver
| Frequency: | U Band | Frequency stability: | <0.002% |
| Sensitivity: | 2mV | Interference frequency ratio: | > 90dB |
| Image interference ratio: | >88dB | Signal to noise ratio: | >95dB |
| Audio output: | 800mV-1.4V | Working range: | Standard conditions are 30 to 50 m |
| Receive channel: | 2 | Supply Voltage: | DC 12V |
| Power consumption: | 3W | Antenna: | universal antenna |
Bodypack Headset Transmitter Mic A
| Wireless frequency | U Band | Mic type | Unidirectional |
| Signal-to-noise ratio | >98dB | Pickup | MO Unidirectional |
| audio signal | Digital sampling 48KHz | ||
| Battery | Lithium polymer battery | ||
| Frequency response | 50Hz-20KHz | ||
| Supply voltage | DC 5V | ||
| Work time | – 8H |
Headset Mic B
| Wireless frequency | U Band | Frequency stability: | <0.002% |
| Transmit power: | 10 mW | Current consumption: | <25mA |
| Harmonic: | <Main wave 40dB | Mic type | Dynamic |
| Pickup: | 6000 unidirectional | Battery: | Lithium polymer battery |
| Work time | ::.6H | Supply Voltage: | DC 5V |
Complex Index
| Dynamic Range: | >95dB | System distortion: | <1%, UK Hertz modulation |
| Frequency response: | 50Hz-18KHz(i3dB) |
Packing List
- 1*Bodypack Headset Transmitter Mic A
- 2* Microphone Antenna
- 1*Handheld Mic B
- 1* 6.35mm to 6.35mm cable
- 1*Receiver
- 1* 3.5mm to 3.5mm cable
- 1*Bluetooth Antenna
- 1* Charging cable
- 1* Adapter
- 1* Manual
Manufacturer:
SHENZHEN LONGXIANG INTELLIGENT TECHNOLOGY CO, LTD.
Address: FLOOR 4, BUILDING D, FUXINLIN INDUSTRIAL AREA,
HANGCHENG INDUSTRIAL ZONE FUHUA COMMUNITY XIXIANG STREET, BAOAN DISTRICT SHENZHEN GUANGDONG CHINA
FCC Warning
This device complies with part 15 of the FCC Rules. 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.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help.
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
