JVC VN-H257U دليل المستخدم

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SAFETY PRECAUTIONS
FOR USA
This device complies with Part 15 of the FCC Rules. Operation
is subject to the following two conditions: (1) This device may
These are general IMPORTANT SAFEGUARDS and
FIXED HD IP DOME CAMERA
not cause harmful interference, and (2) this device must accept
any interference received, including interference that may
certain items may not apply to all appliances.
cause undesired operation.
Instructions (Installation)
VN-H257U
IMPORTANT SAFEGUARDS
INFORMATION (FOR CAN

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When mounting the camera with Removing the dome cover cables pulled out from the side and inner dome If you cannot cut a large enough hole in the ceiling or walls, connect by pulling the cables out through the • Turn the dome cover counterclockwise to remove it. opening in the side of the camera body. • Turn the inner dome 45 degrees counterclockwise and grasp the inner dome near the stops (two locations) to remove it. 1 Power cable (VN-H257U) Alarm cable (VN-H257U) Audio cable (VN-H257U) L

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2 Roughly adjust the focus. Adjust the field angle and focus 1 Lift the focusing gear control, release the catch from position A Turn on the power 1 Adjust the zoom ratio. and insert it into position B to disengage the gear. Loosen the fastening screw of the zoom adjustment ring, then Note move the ring to the right and left to adjust the zoom ratio. After • If you open the gear beyond position B, the gear shaft is After all connections and installations are completed, completing the adjust

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87.5 4.5 Cables Troubleshooting Symptom Causes and Countermeasures Cable type Color Signal name Images on the monitor are dark • If you connect the monitor output (RCA terminal) inside the dome cover to the test 1 Monitor output cable (Common) 2 3 4 monitor while the monitor output cable on the bottom is connected to video recording 1 2 Power cable Red AC 24 V equipment or another monitor, images may be dark. (VN-H257U) Black AC 24 V • Disconnect the monitor output cable from the video record