Introduction

Precautions for Correct Operation

●To save energy, turn the system off whenever it is not in use.

●This camera has been designed for indoor use. It cannot be used outdoors.

●This camera has been designed to be hung from a ceiling, do not install it in an upright position on a surface or at an angle, as this may cause a malfunction or a noticeable short- ening of its service life.

●Do not install or use the camera in the following locations.

•In a place exposed to rain or water. (The waterproof char- acteristics of the camera for TK-C676 are equivalent to IEC 529.)

•In a place containing vapor or oil soot, for example in a kitchen.

•In a place outside the operating temperature range (-10°C to 50°C).

•Near a source of strong radio waves or magnetism, ra- diation or X-rays.

•In a place where corrosive gassed are generated.

•In a place subject to vibrations.

•In a place with excessive dust.

●Insufficient ventilation of the camera may cause a malfunc- tion. Be careful not to block ventilation to the camera. This unit radiates heat from the panel surfaces (top panel and side panels). Do not install it in a place where a heat pool may form, such as near a wall.

●Do not install the camera in a place exposed to cold air, for example near to the air outlet of an air conditioner. Other- wise, moisture may become condensed inside the dome cover.

●Do not point the lens at a strong light source, for example the sun, doing so may cause the camera to malfunction.

●The camera incorporates an AGC circuit. As a result, when it is used under low light conditions the camera gain may increase automatically. This makes the picture appear un- even , however this is not a malfunction

●When equipment that generates strong magnetism such as a transceiver is used near to the unit while the AGC circuit is ON, beat noise, etc may interfere with the picture. If a transceiver or similar equipment is used keep it a dis- tance of at least 3 meters from this unit.

●In auto iris mode, when the AGC circuit is ON, varying the iris with the iris control button may not change the picture brightness. This is due to the automatic gain boost by the AGC circuit. In this case, set AGC to OFF or use the manual iris mode.

●In auto iris mode, the iris control button may not function under certain brightness conditions (i.e. when a sufficient amount of light cannot be obtained). In this case, set the iris mode to manual.

●When the camera is used in ATW (Auto White balance) mode, the colors captured by the camera may differ from the actual colors being shot due to the mechanics of the auto-tracking operation within the white balance circuit. However, this is not a malfunction.

●If a very bright object (such as a lamp) is being monitored, the picture may contain vertical lines (smear) above and below the bright object in the picture. This is a phenom- enon normal to a solid-state image pickup devices (CCD) and is not a malfunction.

●The electronic shutter speed of the camera has been set to 1/50 second at the factory. If the camera is used under a fluorescent light source in an area with a local power fre- quency of 60 Hz, change the shutter speed to 1/120 sec- ond using the remote control unit. (Note that the sensitivity will deteriorate slightly.)

However, when the ExDR function is ON, the flicker may not disappear.

●When the camera is used to monitor the same position over many hours ( e.g. continuously for 24 hours a day) the con- tact resistance of the panning mechanism may increase. This may cause the picture to be affected by noise interfer- ence or the remote control operation becoming unstable. To prevent this happening, once a week, turn the system off and on in order to initialize the camera and to clean the contacts.

●Do not touch the lens on the dome cover directly by hand. Contamination of the cover will lead to deterioration of the picture quality.

●Since the dome cover is of a hemispherical shape, the pic- ture tends to become distorted at the edges of the hemi- sphere. When the camera is tilted and pointed in the hori- zontal-direction, the picture may be out of focus because the camera will then capture the edges of the hemisphere.

●When an object is located near a light source or contains a large difference in brightness, a ghost may interfere with the picture. This phenomenon is due to the characteristics of the dome cover and the built-in lens and is not a mal- function.

●Observe the following points when carrying out mainte- nance of the camera.

•Turn the system off before proceeding.

•Clean the dome cover using a lens cleaning cloth (or tis- sue).

The dome cover may become stained in a very short period in certain operating environments. If the dome cover lens becomes excessively contaminated, clean it with a lens cleaning cloth (or tissue) moistened with a solution of neutral detergent in water.

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JVC TK-C676 manual Precautions for Correct Operation
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TK-C676 specifications

The JVC TK-C676 is a professional-grade CCTV camera renowned for its impressive image quality and reliable performance in various surveillance applications. As part of JVC's reputable line of security products, the TK-C676 incorporates advanced technologies that make it a popular choice among security professionals and businesses alike.

One of the standout features of the TK-C676 is its high-resolution imaging capability. With a 1/3-inch CCD sensor, this camera delivers crisp and clear images, ensuring optimal visibility even in challenging lighting conditions. The camera offers a resolution of 540 TV lines, which allows for detailed surveillance footage that can be crucial for identifying individuals or activities in monitored areas.

Another notable characteristic of the TK-C676 is its robust low-light performance. Thanks to its sense-up technology, the camera can automatically adjust its sensitivity in low-light environments, providing better image quality without the need for external lighting. This feature is particularly valuable for nighttime surveillance or in dimly lit indoor settings, enhancing the overall effectiveness of security measures.

The TK-C676 also excels in flexibility and adaptability with its mechanical IR cut filter. This technology allows for seamless switching between day and night modes, ensuring consistent image quality during both daytime and nighttime operation. This adaptability makes the camera suitable for various applications, including retail stores, parking lots, and public spaces.

Additionally, the JVC TK-C676 features a varifocal lens with a focal length of 3.5mm to 8mm, providing users with the ability to adjust the field of view based on specific surveillance needs. This versatility enables the camera to cover wide areas or focus on particular subjects, making it ideal for both indoor and outdoor placements.

In terms of durability, the TK-C676 is built to withstand harsh environmental conditions. With a sturdy housing that resists both water and dust, this camera can be installed in various locations without compromising on performance. This reliability is essential for continuous operation in demanding environments.

Overall, the JVC TK-C676 is a well-rounded CCTV camera that offers high-resolution imaging, excellent low-light performance, and adaptable features. Its combination of advanced technology, durable construction, and flexible camera options makes it a strong choice for anyone seeking a reliable surveillance solution. Whether for commercial, industrial, or residential applications, the TK-C676 proves to be a valuable asset in enhancing security measures.
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