Debugging of intercom and visual parts of the unit building 1. Under the condition that the wiring and wiring are correct and the equipment is in good condition, the unit system can work normally after being powered on.
2. In the debugging of the unit building, first connect all the wiring of the door host and the lowest layer protector/decoder and indoor unit, and at the same time number the extension's room number in accordance with the instructions for use; Confirm whether the door host and underlying lines and equipment are normal.
3. If the normal work shows that the door host and the line and equipment are normal; then cut off the system power supply, and then connect the main line of the next layer of the system, the second layer of debugging (the system must be off when wiring), in order to increase .
4. During the debugging of the unit building, it is necessary to start the debugging one by one from the bottom layer, that is, after the first layer is debugged, the second layer is debugged, and the debugging is continued until the whole unit is debugged. Commissioning is completed and it can work normally.
Under normal circumstances, the following voltage parameters can be used to determine the quality of the line or equipment by using the multimeter's voltage file;
Static, supply voltage and +B voltage to ground: 12V
Audio line A2 voltage to ground: 0V
Data line P voltage to ground: 0V
After calling the extension, the voltage of the audio line will change to ground: rise to 5.6V
At the same time, the moment of the call through the extension can be measured on the data line P line to a rapid change in pulse voltage between 0-5V change.
5. If the entire unit system equipment is installed and the wiring is correct, but can not work after power-on, the first power off only leaving the underlying protector/decoder, indoor unit and the door of the host is connected, that is, more than two layers The bus of the protector/decoder is completely removed, and it is confirmed whether the main door and the bottom protector/decoder and the indoor unit are normal. If it is normal, the fault is in the protector/decoder or indoor unit above the second floor. In this way, you must find the root cause of the fault layer by layer.
6. If you encounter the above fault, if the floor is high, you can use the "golden section method" to check the fault, that is, disconnect the middle floor (if the 20 floors need to be disconnected in the 10th floor) above the protector/decoder. Bus, restore the bus connected to the second floor, confirm the fault is specifically in the middle layer or above the middle layer, according to this method can quickly identify the root cause of the fault.
7. As long as the wiring between the indoor unit and the protector/decoder is correct, the connection cable between the protector/decoder and the indoor unit is plugged in and the video line is connected. After the room number of the extension is programmed, it can be normal without debugging. jobs;
8. If the image of the indoor unit appears ghosted or the image is distorted due to excessive signal strength, a 75-ohm-size carbon film resistor must be connected to the video output of the last protector/decoder at the top layer for attenuation. / Match the video signal 9. If the indoor unit's image appears blurred or the image is relatively white, indicating that the video signal is weak, you can adjust the video gain by turning on the video amplifier circuit on the protector; the method is to put the protector on the side by side 3 The jumpers J1, J2, and J3 can be turned to the ON position from the original OFF position. At the same time, the size of the video gain and the size of the high-frequency signal can be adjusted by adjusting the two potentiometers on the protector. Specific measures can be taken to the side of the extension connected to the protector, while adjusting the potentiometer, while observing the image; generally low-level (7 layers below) does not need to open the video amplifier circuit; high-level (more than 20 layers) also just open a protector Video amplifier circuit can be.
10. During the call between the host computer and the indoor unit, if there is a harsh whistling sound or the sound of the host horn is small, you can use a small flat-blade screwdriver to perform the potentiometers VR1 and VR2 on the mainboard of the entrance door. Speaker, microphone volume adjustment.
2. In the debugging of the unit building, first connect all the wiring of the door host and the lowest layer protector/decoder and indoor unit, and at the same time number the extension's room number in accordance with the instructions for use; Confirm whether the door host and underlying lines and equipment are normal.
3. If the normal work shows that the door host and the line and equipment are normal; then cut off the system power supply, and then connect the main line of the next layer of the system, the second layer of debugging (the system must be off when wiring), in order to increase .
4. During the debugging of the unit building, it is necessary to start the debugging one by one from the bottom layer, that is, after the first layer is debugged, the second layer is debugged, and the debugging is continued until the whole unit is debugged. Commissioning is completed and it can work normally.
Under normal circumstances, the following voltage parameters can be used to determine the quality of the line or equipment by using the multimeter's voltage file;
Static, supply voltage and +B voltage to ground: 12V
Audio line A2 voltage to ground: 0V
Data line P voltage to ground: 0V
After calling the extension, the voltage of the audio line will change to ground: rise to 5.6V
At the same time, the moment of the call through the extension can be measured on the data line P line to a rapid change in pulse voltage between 0-5V change.
5. If the entire unit system equipment is installed and the wiring is correct, but can not work after power-on, the first power off only leaving the underlying protector/decoder, indoor unit and the door of the host is connected, that is, more than two layers The bus of the protector/decoder is completely removed, and it is confirmed whether the main door and the bottom protector/decoder and the indoor unit are normal. If it is normal, the fault is in the protector/decoder or indoor unit above the second floor. In this way, you must find the root cause of the fault layer by layer.
6. If you encounter the above fault, if the floor is high, you can use the "golden section method" to check the fault, that is, disconnect the middle floor (if the 20 floors need to be disconnected in the 10th floor) above the protector/decoder. Bus, restore the bus connected to the second floor, confirm the fault is specifically in the middle layer or above the middle layer, according to this method can quickly identify the root cause of the fault.
7. As long as the wiring between the indoor unit and the protector/decoder is correct, the connection cable between the protector/decoder and the indoor unit is plugged in and the video line is connected. After the room number of the extension is programmed, it can be normal without debugging. jobs;
8. If the image of the indoor unit appears ghosted or the image is distorted due to excessive signal strength, a 75-ohm-size carbon film resistor must be connected to the video output of the last protector/decoder at the top layer for attenuation. / Match the video signal 9. If the indoor unit's image appears blurred or the image is relatively white, indicating that the video signal is weak, you can adjust the video gain by turning on the video amplifier circuit on the protector; the method is to put the protector on the side by side 3 The jumpers J1, J2, and J3 can be turned to the ON position from the original OFF position. At the same time, the size of the video gain and the size of the high-frequency signal can be adjusted by adjusting the two potentiometers on the protector. Specific measures can be taken to the side of the extension connected to the protector, while adjusting the potentiometer, while observing the image; generally low-level (7 layers below) does not need to open the video amplifier circuit; high-level (more than 20 layers) also just open a protector Video amplifier circuit can be.
10. During the call between the host computer and the indoor unit, if there is a harsh whistling sound or the sound of the host horn is small, you can use a small flat-blade screwdriver to perform the potentiometers VR1 and VR2 on the mainboard of the entrance door. Speaker, microphone volume adjustment.
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