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Building system installation and debugging
2012-09-13 14:31:21

 

First, in ensuring the correct line and wiring, equipment in good condition, unit power system can work normally.

In second, unit building commissioning, put in front of the host and the lowest layer of protection converter / decoder and the indoor machine all the wiring connection, while the extension housing according to instructions number; electric debugging this system works, confirmed in front of the host and the bottom line and equipment, whether it is normal.

Third, if the normal work in front of the host and the line and equipment is normal; and then cut off the power supply system, and then connected with a layer of system main line, second tier debugging ( system wiring must power off ), in order to increase.

In fourth, unit building commissioning process, must start from the bottom layer to debug, namely the first layer after debugging, and second layers of debugging, and so has been up until the entire unit debugging, debugging and completed the work.

Building intercom ten brands under normal circumstances, can be obtained by using multimeter voltage measuring the following voltage parameter distinguishing lines or equipment quality;

In static state, the supply voltage and the ground voltage: 12V +B

Audio line to ground voltage: 0V A2

The data line to ground voltage: 0V P

Call extension, audio line to ground voltage will change: to 5.6V

At the same time call extension moment data lines in the P line can be measured to a quick change pulse voltage between 0-5V changes.


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