Wireless microphone FM pairing ultimate tutorial! Disconnection, noise, frequency mismatch, all at once.

Many people's wireless microphones are not broken, powered and connected normally, but there are often problems such as no sound, intermittent radio reception, noisy noise and frequent disconnection.
90% of novices don't know that the key to the use of wireless microphones is not charging maintenance and placement, butCorrect FM pairing.
Wireless microphone relies on UHF/2.4G radio frequency band to transmit audio signals. Once the transmitting and receiving frequency points are misplaced, the frequency bands conflict and the pairing is out of sync, it will directly lead to failures such as silence, jamming, crosstalk and noise floor. Online tutorials are messy, and the model buttons are different. Today, I will sort out a set.
All netcom uses and adapts to all brands.
The standard process of wireless FM pairing includes automatic frequency matching, manual FM, multi-machine mixing, troubleshooting of pairing, hands-on practical teaching, and never ask for help after reading it.
First, first understand the principle: Why do you have to FM pairing?
Wired microphones rely on lines to transmit signals, and can be used stably when plugged in; The wireless microphone belongs to two-way radio frequency communication equipment,
The receiver and transmitter must lock the same set of frequency points.
In order to transmit sound normally.
In daily use, switching on and off the device, changing the use environment, peripheral Bluetooth /WiFi interference, device restart and voltage fluctuation will all cause frequency shift and pairing cache failure. This is also the core reason why the microphone turned on normally, but suddenly lost its voice and the noise surged. Simply put:
Pairing is not right, even the best microphone can't receive the radio normally.
Second, automatic infrared frequency matching for the whole network (95% home/live broadcast microphone adaptation)
At present, most of the collar-clip wheat, hand-held wireless wheat and live wireless wheat on the market support infrared one-button frequency matching, which is simple to operate and has the highest success rate. It is also the official standard pairing method.
Complete standard operating procedures：
1. Power failure restart initialization
: The receiver and microphone transmitter are all turned off, let stand for 3 seconds, and completely empty the old frequency cache to avoid historical data interfering with the new pairing.
2. Turn on the receiver first
: Turn on the power of the receiver, wait for the screen to light up and the self-check of the equipment to be completed, and keep the standby state.
3. Enter the exclusive frequency mode.
: Press the SET/SYNC/ frequency key on the receiver for a short time or a long time, and a flashing horizontal line, PAIRING logo or infrared icon will appear on the screen, thus successfully entering the pairing state.
4. Infrared precise alignment
Turn on the power supply of the microphone transmitter, find the infrared sensing window marked with IR on the fuselage, aim at the infrared area of the receiver vertically, keep a distance of 3-5cm, and do not tilt or block the sensing port.
5. Wait for automatic synchronization to complete.
: Let it stand for 2-5 seconds, the screen frequency number is fixed, the indicator light changes from flashing to constant light, and there is no error prompt, that is, the pairing is successful and the radio can be used normally.
Key points for attention
Strong light and direct sunlight will interfere with infrared signals, so it is recommended to operate in indoor soft light environment to greatly reduce the probability of pairing failure.
Third, manual FM course (required for professional UHF microphone/multi-equipment live broadcast room)
Professional microphones without infrared frequency matching function, or scenes where multiple sets of microphones are used at the same time and cross-talk interference frequently occurs, must be manually tuned to lock clean frequency points, so as to eliminate equipment interference from the root.
Detailed steps of manual frequency modulation：
1. After the device is turned on, observe the receiver screen, and manually switch the channel and the corresponding frequency through the CH/FREQ/ addition and subtraction buttons.
2. Give priority to blank, clean frequency points without interference, and actively avoid the interference frequency bands of surrounding WiFi, Bluetooth and electronic equipment.
3. After fixing the frequency point of the receiver, adjust the frequency of the microphone transmitter synchronously,
Ensure that the frequency figures at both ends of the transceiver are completely consistent.
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4. After the frequency matching is completed, press and hold the channel key to turn on the LOCK frequency locking function to prevent frequency hopping and disconnection caused by accidental touch.
Practical core skills
: single set of equipment is used, and automatic frequency alignment is completely sufficient;
Two or more wireless microphones work at the same time, and the frequency points must be staggered manually.
The frequency band interval of each set of equipment is more than 5MHz, which completely solves the problems of crosstalk, crosstalk and signal interference.
Fourth, the practical method of simultaneous pairing of multiple microphones without conflict
In live broadcast rooms, conference rooms, multi-person interviews and other scenes, when multiple sets of wireless microphones are working at the same time, the problems of frequency scrambling, crosstalk, silence and jamming are most likely to occur. The correct step-by-step operation method is as follows:
1. All microphones and receivers should be turned off, and the standby cache of the equipment should be emptied to avoid the conflict of starting and scrambling for frequency.
2. The first set of equipment is turned on separately, and the automatic frequency matching or manual frequency modulation is completed. After locking the frequency point, it is allowed to stand for use.
3. Turn on the second set and the third set of equipment in turn, and each set of equipment will be replaced with a brand-new blank frequency point and paired separately.
4. After all devices are paired, turn on the frequency locking function to prevent signal interference caused by automatic frequency hopping of devices.
Fifth, the pairing failed, can't match the frequency? 6 reasons+accurate solutions
The vast majority of pairing failures are not equipment hardware failures, but errors in operation details, which can be quickly repaired by targeted investigation:
1. The equipment is low in power.
: When the microphone and receiver are low-powered, the intensity of the transmitted signal is attenuated, so it is impossible to complete synchronous pairing. Before pairing, it is necessary to ensure that the equipment has sufficient power.
2. Infrared occlusion, angle offset
: fuselage film, dust and inclined plane alignment will block the infrared transmission signal, which can be solved by wiping the sensing window and vertical alignment.
3. Strong light interference
: Sunlight and high-power light direct at the infrared window, which will lead to synchronization failure. Just change the cool and soft light environment and re-pair.
4. Peripheral radio frequency interference
: Routers, Bluetooth devices, chargers, and computer hosts are clustered in close proximity, which will interfere with frequency band signals. When pairing, it is necessary to stay away from all kinds of electronic interference sources.
5. Old frequency buffer residue
: The device remains historical pairing data, which will lead to the failure of new pairing. All transceiver devices will be shut down and restarted, and the cache will be cleared before operation.
6. Frequency not unlocked.
: Some professional microphones have their own frequency locking function, so they need to be switched to the UNLOCK state before they can be tuned and paired normally.
6. There is still noise and disconnection after successful pairing. Ultimate optimization scheme
1. After successful pairing, avoid frequent switching on and off and repeated frequency alignment. Excessive operation will easily lead to disorder of equipment frequency points and unstable signals.
2. The receiver should be placed in a high place with no shielding as far as possible, away from metal equipment, computer mainframe and power adapter, so as to reduce signal shielding and attenuation.
3. In noisy environment and multi-equipment working scene, priority should be given to manually fixing frequency points, and the functions of automatic frequency sweeping and automatic frequency hopping of equipment should be turned off to ensure the continuous stability of signals.
4. When the equipment is used for a long time, the signal attenuation and sound quality become worse, and the signal link can be refreshed again to restore the best radio state quickly.
80% of radio failures of wireless microphones are caused by
Wrong FM pairing mode. Single person daily use, automatic infrared frequency matching can stabilize the radio; When multiple devices work together, it is necessary to manually frequency modulate and stagger the frequency bands. Mastering this general practical course can solve all common problems such as wireless microphone silence, disconnection, noise and crosstalk at one time without changing equipment and professional maintenance.

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