First, the operator should pay attention to the problem 1, the problem should be paid attention to before use. The operator should carefully check the wireless microphone before the performance, correctly connect the system, properly set up the antenna to ensure that the microphone is in normal working condition, mainly pay attention to the following point. In order to avoid the soundless phenomenon of the wireless microphone during the performance. Crosswalk Signal Light,Pedestrian Traffic Light,Customized Dimming Function Signal Light,Led Crosswalk Signal Pedestrian Traffic Light Jiangsu Bosiwei Optoelectronics Group Co.,ltd , https://www.bswledled.com
(1) Check if the battery case is in good contact and the battery has power.
(2) Turn on the receiver first, check the RF meter head, make sure there is no RF interference in this channel, and then turn on the transmitter.
(3) Check the microphone mute switch to ensure that the wireless transmitter and microphone are always active.
(4) Hang the waistband transmitter antenna down on the belt to avoid sagging and bending due to gravity, which will affect the launching effect. Do not let the waistband transmitter come into direct contact with human skin because the actors are prone to sweating during the performance and affect the normal operation of the electronic device.
(5) In order to avoid the carrier frequency deviation, please do not directly touch the waistband transmitter with metal objects, such as keys, belt buckles, etc.
(6) Do not stack the receivers together to avoid interference between the receivers.
2. Problems that should be paid attention to during use (1) During the performance, pay attention to observe whether the RF signal indicator is normal or not, and prevent interference from external wireless signals.
(2) When the microphone is handed over, avoid stacking multiple open wireless microphones together, and do not close to the receiving antenna to avoid intermodulation interference and affect the use of wireless microphones.
(3) If there is noise in the sound, the microphone head may not be installed in place, or the sensitivity of the microphone head is set too high, or the frequency used may be disturbed, mainly for the following reasons.
There are interference sources in the venue (such as mobile phones, walkie-talkies, cordless phones, etc.). When this happens, you can try a different frequency. When replacing a new frequency, it is best to change the frequency of the receiver first to find the receiver. The RF signal light has no disturbing frequency and then changes the frequency of the transmitter.
The receiving conditions of the venue are not good (such as the column blocking in the field, or the reflection of metal equipment and glass in the field, the sound control room leaving the venue far away, the wall blocking or turning, etc.) will affect the normal reception of the signal. There are usually several ways to solve the problem:
1 Try to use a diversity wireless system (ie one microphone, two antennas) because the two antennas have a larger receiving range.
2 You can change the direction, angle, etc. of the antenna to improve the reception.
3 If the receiving environment is too bad, such as the sound control room is not in the venue, as long as the antenna can be extended to solve the problem, the emergency method: take a video cable 10-15 m, connect with the antenna of the original receiver, and install it in the energy The place where the signal is received is sufficient.
(4) When it is necessary to replace the wireless microphone battery in use, the microphone power should be turned off first, then replaced, and then the microphone switch turned on.
Second, the issue of the use of the artist should pay attention to
1. Do not hold the microphone head of the microphone by hand. Because all the microphones have a certain directivity, if you hold the mesh part by hand, it will change the directivity and frequency response of the microphone, and also due to the aggregation effect of the palm. , causing effects such as returning and howling;
2. Do not hold the microphone. The antenna is usually a hand-held microphone. The transmitting circuit and antenna are located in the lower part of the microphone (away from the end of the microphone). When the human hand touches the antenna, most of the RF energy cannot enter the air. Loss, reduce the scope of use of the wireless system, affecting the reception effect;
3, should properly maintain the distance between the microphone and the mouth When using the handheld wireless microphone, the distance between the microphone and the mouth is generally kept at 5-10cm, too close to produce a near-talk effect, too far sound is very light, will destroy the sound quality; When using a lavalier microphone, prevent the microphone from being too far away from the mouth, as close as possible to the mouth; use a headband microphone to avoid the mouth facing the microphone head and avoid the impact of the audible airflow, which should be moved to both sides;
4. Avoid pointing the microphone directly to the speaker. If the microphone is pointed directly at the speaker, a closed loop is formed in the whole system, which will generate positive feedback (howling), which must be avoided;
5, to avoid the two wireless microphone transmitters together When using multiple sets of wireless microphone systems, if the same series of products, if possible, it is best to use the antenna distributor to minimize the mutual interference between the antennas, If there is no antenna splitter, the antenna of the wireless microphone receiver should be adjusted to the optimal position, and then paralleled in a word, and each wireless microphone receiver should maintain an appropriate distance (the antennas on each receiver cannot be phased). Touch), so that each receiver has better receiving conditions, to improve the directivity of the wireless receiver, to avoid mutual interference between the frequencies, in order to obtain a better wireless signal. In addition, the performance of large-scale occasions is best installed Extend the antenna or active amplifying antenna to improve the receiving effect;
6. Prevent the silent phenomenon that may appear in the performance. Do not turn off the power and mute switch during the performance. Use the black electric cloth to occupy the dead power and the mute switch, so that the wireless transmitter microphone is always in working state, and it is controlled by the mixer. volume. With the black cloth occupying the dead power and the mute switch, the following problems will not occur.
7. Correctly recognize that when using two or more handheld wireless microphones of the same type in the wireless microphone performance in use, each wireless microphone should be marked with a different color to prevent misoperation, and the mark should generally be attached to the handheld. The bottom position of the wireless microphone is not easy to block when holding the microphone. At the same time, the same color as the microphone should be marked or marked on the channel corresponding to the microphone on the mixer. In this way, even if the actor mistakenly takes the wireless microphone, the operator can correct it in time when the presenter introduces the actor or plays the song. In addition, you can also use the color microphone dust cover to mark, which not only eliminates the "gasp" sound and the "beep" sound, but also can be used as a microphone mark, which is really good for both. Especially when singing or re-singing, it is more important to adjust the volume and tone of each microphone according to the color code.