音响灯光设备外壳有带电现象的检查顺序
Inspection sequence of electrified enclosure of audio and lighting equipment
设备外壳带电检查的顺序是要检查供电线路是否出现损坏的情况，其次是线路相位是否正确，然后还要了解设备接地和电压是否正确。
The order of live inspection of equipment shell is to check whether the power supply line is damaged, then whether the line phase is correct, and then whether the equipment grounding and voltage are correct.
怎么检查声场中发生共振和反馈
How to check resonance and feedback in the sound field
如果在音响设备中出现共振和声反馈的情况，要检查房间频响是否有峰点，还有就是要检查房间结构和装饰是否合理，还要检查分频点和低音增益是否合理，房间混响时间是否有出现过长的情况。
If there is resonance and acoustic feedback in professional audio equipment, first check whether the room frequency response has a peak point, and whether the room structure and decoration are reasonable. It is best to check whether the frequency division point and bass gain are reasonable, and whether the room reverberation time is too long.
产生干扰噪声的检查方法
Inspection method for generating interference noise
音响设备中如果有噪声，就要检查调光干扰，音响和灯光电源是否出现断开的情况，其次就要检查灯光电源和控制线路是否离音频信号线太近，有没有出现硅箱离音频设备太近的情况。
If there is noise in professional audio equipment, first check the dimming interference and whether the audio and light power supply are disconnected. Secondly, check whether the light power supply and control line are too close to the audio signal line and whether the silicon box is too close to the audio equipment.
一般情况下出现音箱系统有噪声的情况，通常都是由于信号的传输不合理的情况所导致的，所以当信号线的屏蔽出现问题，或者信号的接地不正确的情况，就容易出现噪声干扰的情况。
Generally, the noise in the speaker system is usually caused by the unreasonable signal transmission. Therefore, when the shielding of the signal line is faulty or the signal grounding is incorrect, the noise interference is easy to occur.
音响系统音量不足的情况检查顺序
Inspection sequence for insufficient volume of professional sound system
一般情况下如果音响设备中出现音量不足的情况，就要及时的检查功放和音箱的线路电平设置是否正确，其次还要了解音箱线连接是否牢固，还有就是功放与音箱的相位是否一致，均衡器衰减幅度是否在正常的范围呢?压限器的起控电平是否恰当?
Generally, if the volume is insufficient in professional audio equipment, it is necessary to timely check whether the line level setting of power amplifier and speaker is correct. Secondly, it is also necessary to understand whether the speaker line connection is firm, whether the phase of power amplifier and speaker is consistent, and whether the attenuation amplitude of equalizer is in the normal range? Is the starting control level of the voltage limiter appropriate?
灯光失控的检查方法
Inspection method of out of control light
灯光失控就要检查控制器的程序有没有问题，灯具的地址编码有没有出现问题，控制线的接法是不是正确，还有需要检查控制线的屏蔽有没有受到不良干扰，灯具的限位调整是否恰当等。
If the light is out of control, first check whether there is a problem with the program of the controller, whether there is a problem with the address code of the lamp, whether the connection method of the control line is correct, whether the shielding of the control line is subject to adverse interference, and whether the limit adjustment of the lamp is appropriate.
电脑灯灯泡损坏检查
Computer lamp bulb damage inspection
在舞台音响灯光中容易出现的就是灯泡易坏的情况，所以出现问题，就要检查安装的灯泡否牢靠，有没有沾染尘土和水气，还有就是要检查灯泡的散热是不是在正常范围内，需要检查的是电压是否在正常的范围内，有没有使用电源开关过于频繁的情况。
In the stage sound and lighting, the most likely thing is that the bulb is easy to break. Therefore, in case of problems, it is necessary to check whether the installed bulb is reliable and whether it is contaminated with dust and moisture. In addition, it is also necessary to check whether the heat dissipation of the bulb is within the normal range. It is best to check whether the voltage is within the normal range and whether the power switch is used too frequently.
音响设备中无线话筒的声音不稳定：
The sound of wireless microphones in professional audio equipment is unstable:
如果无线话筒有不稳定的情况，就要检查声音不稳定的原因在哪里，是由于系统内有高频干扰源导致的，还是天线连接错误、接收机微调、话筒电池电量等连接设备出现问题导致的。
If the wireless microphone is unstable, first check the cause of the sound instability, whether it is caused by high-frequency interference sources in the system, or problems with connecting equipment such as antenna connection error, receiver fine-tuning, microphone battery power, etc.
音视频系统中对视频图像的检查
Inspection of video image in audio and video system
如果在音响设备中出现视频图象不正常的情况，就需要检查节目制式是不是在正确的范围，设备外壳有没有带电的情况，其次还要检查信号屏蔽是不是容易受到高电平干扰，要检查投影管是否在正常的范围内，液晶投影的灯泡的性能有没有出现问题。舞台灯光音响设备
If the video image is abnormal in professional audio equipment, first of all, it is necessary to check whether the program system is in the correct range and whether the equipment shell is charged. Secondly, it is also necessary to check whether the signal shielding is vulnerable to high-level interference. It is best to check whether the projection tube is in the normal range and whether there is a problem with the performance of the liquid crystal projection bulb. Stage lighting and sound equipment
Shandong public broadcasting audio has been dedicated to the industry for many years and has served customers wholeheartedly. Your satisfaction is our development. For details, click:
