Failure analysis and treatment of digital mixer's dead condition

We know that the main features of digital mixing station are: analog signal into the mixing station, the first analog-to-digital conversion, the signal into a digital stream; mixing station can not be guaranteed.

External cause

If the external environment of the mixer is not good enough, it may cause the mixer to crash. First, eliminate the power factor. If the power supply connecting the mixer is connected with other high-power appliances at ordinary times, a large voltage transient will occur when the appliances are started. The voltage of the power supply terminal of the mixer descended instantaneously. The adjustments of the transformers themselves to this voltage change are limited, and the machines usually shut down once they exceed the limits allowed; if they do not shut down, extraordinary changes in voltage may also bring noise into the system. Otherwise, in some areas, because of the increase in electricity load, especially in summer, the daytime voltage may be satisfied, and in the evening, after the increase in electricity load, the night market voltage drops more, which about the digital mixing station, if the transformer can not perfunctory this change, it may appear dead.

Secondly, static electricity is also a great danger. The southern climate is relatively humid, because the air humidity is relatively large, the body and object surface charge is difficult to accumulate a lot. In the north, however, the air is relatively dry, and people wear clothes of different materials, often accumulating different charges. The space in which the mixer is installed, usually to manipulate the reflection of sound, is often carpeted on the ground, but the carpet itself is obscure in guiding the charge. This is noticeable in relatively dry autumn and winter seasons. The operator's hand and the exterior of the mixer "close touch" on the start of the "over-current", this instantaneous current, can seize tens of thousands of volts of voltage. When this voltage impulse circuit, some equipment will exceed the limit of load, so the crash appears. So the electric charge in the room is quickly led out. Lay a carpet with better relative conductivity, grounding the mixing table, and the operators wear less electrostatic clothes to guide the charge.

Dust is definitely a killer of digital mixer. Many musicians have the habit of smoking, often smoking next to the equipment, which will make a lot of smoke and dust into the machine, in various touch points and the accumulation of paintings, easy to seize the charge and potentiometer touch bad and other negative effects. We turn on the lid of the digital machine, and we can tell whether there is dust accumulation through the naked eye. When the dust removal device is installed, it can use a strong electric hair dryer to remove the dust from the surface. If necessary, it can use a precision instrument cleaner to spray in a clean place. After evaporation, it can be tested by electricity. The handling of this situation is useful for the use of mixer which is long and lacks maintenance all the year round.

Internal cause

Different sizes of digital mixer are different in handling many situations, parameters and data. For large-scale project processing documents, or the time length is larger, automatic recall of the use of larger documents, will lead to slow response and even crash. In view of this situation, we need to dispose of the engineering documents as far as possible. For example, a 60-minute jumbled engineering document can be saved as a document every 20 minutes, with three documents to record the entire operation, which greatly reduces the risk of crash.

Digital mixer is similar to a computer, mixer deactivation phenomenon is generally restarted, 80% of the cases, the symptoms can disappear, but this is not a cure for the symptoms. Mixer sometimes in a certain situation to perform the operation is always crashed (recording digital mixer), and the reason is not easy to find. Fortunately, there is an important storage condition in any digital mixer - the factory settings marked Default Setting, which can be invoked to restore the mixer to its original state, so that the crash condition can basically disappear.

The digital mixer also has its own operation system to run its own software in the system. There are some hardware drivers that may be a source of crashes. General manufacturers will provide their own digital mixer hardware and operating system for free promotion service, promotion, the need for a connection network computer assistance. General equipment in the process of user use will respond to a lot of information, the manufacturer based on these information processing problems and make amends to make up for the improvement of software and hardware are improved. Need to note that, because the promotion process is dangerous, please do a good job of data maintenance before promotion, and pay special attention to the promotion process must not power off, otherwise it will bring irreparable loss. If you don't know well, ask for professional skills.

With regard to digital mixers, the larger the mixer, the greater the degree of separation between the control and signal processing parts, and the greater the need for our skilled personnel to increase the judgment process in dealing with crashes. Only by analyzing the causes of the crash can we better handle the problem. Today, with the development of computer skills, many phenomena can not be associated with traditional audio skills, which is a challenge for radio operators. Most word mixing stations have self-checking procedures, after booting, the equipment will detect its own situation, if the problem, will be mentioned, together with the supply of error number, if there is a repair manual, it is good to find the reason, the symptomatic medicine, the problem can be handled conveniently. Another good way to do this is to focus on the digital mixer vendors'forums for pioneering products. Many people from different countries around the world will help you to provide valuable information to you. If the mixer is too old to find the cause of the crash, then we still ask experienced experts to consult, with their help to deal with the problem.

Through these methods, I think most of the digital mixer's condition can be handled. Because of the characteristics of digital equipment itself, there will be many possibilities in the use of digital mixer, when you understand the principles and methods of operation, the problems encountered, you can better deal with.