Справочник Пользователя для JVC VN-H257VPU

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Remove the dome cover and the inner dome.

Knob (two 
locations)

Dome cover

Fall prevention 

wire

Wrench (supplied)

Inner dome

Memo

•  When you remove the dome cover, use the supplied wrench.
•  To remove the inner dome, turn it 45 degrees and grasp the inner 

dome near the catches (two locations). It will come off easily.

Note

 Read before starting work.

•  Special skills are required to install this unit.
•  Install this unit on a location that is strong enough to hold it.
•  Use the appropriate attachment screws and tighten them securely.
•  Make sure you turn off the power supply to the device before starting work.
•  When you attach the camera body to the ceiling, be sure to wear 

safety goggles to protect your eyes from falling objects.

Opening a hole (approx. Φ 30 mm) on 
the ceiling or wall

Open a hole (approx. Φ 30 mm) in the ceiling or wall, 

and pull the cables out of the hole.

To attach the fall prevention wire, remove the attachment 

screws of the fall prevention wire on the bottom of the camera 

body (the fall prevention wire and cables are not provided).

Note

•  Attach the fall prevention wire to a sufficient strong location such as 

the ceiling or wall.

•  Mount the fall prevention wire using an attachment screw.
•  Take note of the length and strength of the fall prevention wire. Use wire 

made of insulated material. Make the wire length as short as possible.

•  Use the appropriate attachment screws and tighten them securely.
•  Use stainless steel attachment screws. If you use stainless steel 

screws, apply rust-proofing, for example, by painting them after 
installation. Tighten the screws securely so that the unit will not fall off.

Camera 
body

Approx. Φ 30 mm

Fall prevention wire (Not provided)

Fall prevention wire

8 mm

2 mm

Shooting direction mark

4.3 mm or less

Φ 12 mm or less

Φ 4.1 to Φ 6.5 mm

Filling the dust hole and the mounting holes (two 

locations) with waterproof seal material (GE silicon).

Waterproof treatment (three locations)

*  This illustration does not show 

the inside of the camera body 
for convenience of explanation.

After adjusting images, place the silica gel in the location 

shown in the diagram below.

Rug plate

* Fix the silica gel 

so that it will not 
fall off.

Silica gel

Silica gel
Insertion space

Note

•  Take silica gel out of the aluminum pack, place in the space for 

inserting silica gel inside the camera body, and fix it using the rug 
plate.

•  Completely plug the duct hole and the mounting holes. Water and 

moisture may get inside and fog the lens and dome cover.

•  If it is raining when you install the unit, exercise care to prevent any 

rain from entering.

•  Be sure to place silica gel. If you use a type of silica gel other than 

that supplied with this unit, the camera lens and the dome cover may 
become fogged.

•  When you open the dome cover for repair or maintenance, replace 

the silica gel.

•  Correctly waterproof all the cables using waterproof tape (adhesive).
•  If you do not adjust the field angle (

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 Page 3) immediately after 

installing the camera, place the silica gel when adjustment is 
finished. The effects of silica gel wear off if it is exposed to air for a 
long period of time.

•  Apply seal materials to or caulk the gap between the camera and the 

ceiling or wall.

After connecting the cables, attach the camera to the ceiling (or 

on the wall).

Use the attachment screw (approx. Φ 4 mm) to secure the 

camera body to the ceiling or wall.

When you mount it, align the shooting direction mark with the 

range you want to shoot.

Note

•  Check to ensure that there is no gap between the ceiling and the camera.
•  Ensure that neither the cables nor the fall prevention wire of the 

dome cover are tucked in.

* This illustration does not show 

the inside of the camera body for 
convenience of explanation.

Shooting direction mark

Mounting 
hole

Attachment screw 
(Prepared by customer) 

Loosen the fastening screws (M3 x 6 mm) and remove the 
plug for the duct hole using a flat-blade screwdriver.

Note

•  When you insert a pipe, do not insert it deeper than 12 mm. Inserting 

it further may damage the inside of this unit.

•  If you install the unit, using the duct hole on the bottom or on the side, 

wrap seal tapes around the connecting parts (the point where the thread 
of the duct hole and the screw hole meet) of the duct at least twice.

Plug for duct hole

Setscrews

Seal tape

Plug for duct hole

*  This illustration does not show 

the inside of the camera body for 
convenience of explanation.

* Place the duct hole plug that you 

removed into the duct hole at the 
bottom of the camera.

Alarm cable 

(VN-H257VPU)

Fall prevention wire

Power cable (VN-H257VPU)

Soldering or crimping

Wrapping insulation tapes

LAN cable 
connector

LAN cable

Audio cable (VN-H257VPU)

LAN cable

Ferrite core

(VN-H257VPU)

Connect the AC 24 V power cable, alarm cable, and audio cable to 
their respective connectors by crimping them or soldering them.
Wrap unused connectors and the ends of unused cables with insulation 
tape and waterproof tape.
Make sure the LAN cable is completely inserted into the connector. 
After confirming the connection, waterproof it by wrapping it with 
waterproof tape.
Attach the supplied ferrite core only to the Alarm I/O cable. (VN-H257VPU)
Securely attach the fall prevention wire to a section that is sufficiently 
strong (a slab or channel).

Note

•  Always use the AC 24 V power supply that is insulated from the 

primary power circuit. An autotransformer or similar single winding 
transformer may fail or damage the camera.

•  If you use both the AC 24 V power cable and the PoE-based LAN 

cable simultaneously, the camera may fail. Always supply power 
using either method.

Memo

•  Put the cables into the hole that you opened on the ceiling or wall 

after connecting.

When using the duct hole at the bottom of the base or on 
the side, attach the LAN cable as follows.

SD card slot

Mounting hole 
for a screw

SD card slot

Mounting hole 
for a screw

Note

•  Make sure that the LAN cable does not cover the SD card slot. 
•  Writing data to and reading data from an SD card is not currently 

supported. Do not insert an SD card.

•  When connecting the LAN cable, keep it away from the mounting 

hole for a screw.

Inner 
dome

Wrench 
(supplied)

Dome cover 
protective 
sheet

Camera 
body

Dome 
cover

Approx. Φ 30 mm

* The VN-H257VPU camera is shown in the illustration.

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5/24/2012   2:59:08 PM

5/24/2012   2:59:08 PM