Exploring the frequently encountered problems of surveillance camera maintenance
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B. The BNC connector or video cable is not in good contact.
C. Is the lens aperture open?
D. Whether the video or DC-driven auto iris lens control cable is connected.
2. The image quality is not good. a. The lens has fingerprints or is too dirty.
B. Is the aperture adjusted?
C. Poor video cable contact.
D. There is no problem with the electronic shutter or white balance setting.
E. Is the transmission distance too far?
F. Is the voltage normal?
G. Is there a source of interference nearby?
H. When installing in the elevator, ensure that the elevator is insulated from interference.
i. Is the CS interface connected?
Precautions before maintenance and maintenance of the monitoring system 1. Before the main unit is energized, check it first to avoid burning the parts due to poor contact. The inspection method is:
A. Shake the host to check if there is any loose inside.
B. Check whether the cards are skewed and the contact is bad after checking from the host;
C. Whether the voltage selection switch is set at 230 and matched with the supply voltage;
1. There is an abnormal phenomenon, please do not electrify. Notify the supplier immediately and listen to the comments.
2. Many interfaces on the rear panel are pin-type. Check whether the pins are skewed before connecting to avoid damage to the interface.
3. The interface is not well matched. If the audio and video connectors are tightly matched, please replace the connector first.
4. The host computer is a card structure. When the external connector is connected, it must not be hard pushed and hard pulled to avoid poor contact.
5. When the host is working, please fix the position and do not drag.
6. According to the host interface properties, connect all relevant peripherals and check if the contact is good.
7. Use the online uninterruptible power supply (UPS) to supply power to the host to avoid damage to the hard disk caused by power failure.
8. Shut down according to the correct procedure. Do not use the power off mode to shut down to avoid system damage.
Name:C.I.Solvent Yellow 90
Molecular Structure: azo,Metal Complexes
CAS Registry Number:61116-26-5
Features:
Weather resistance.
Eco friendly
Long shelf life