JVC VN-V25U, VN-V26U User Manual

IP CAMERA

VN-V25U
VN-V26U

VN-V25U

INSTRUCTIONS

VN-V26U

Thank you for purchasing this JVC product.
Before operating this unit, please read the
instructions carefully to ensure the best
possible performance.

LST0674-001A

Getting Started

Safety Precautions

Information for Users on Disposal of Old Equipment
[European Union]

This symbol indicates that the electrical and electronic equipment should not be
disposed as general household waste at its end-of-life. Instead, the product
should be handed over to the applicable collection point for the recycling of
electrical and electronic equipment for proper treatment, recovery and recycling
in accordance with your national legislation.

By disposing of this product correctly, you will help to conserve natural resources
and will help prevent potential negative effects on the environment and human
health which could otherwise be caused by inappropriate waste handling of this
product. For more information about collection point and recycling of this product,
please contact your local municipal office, your household waste disposal service

Attention:

This symbol is
only valid in
the European
Union.

or the shop where you purchased the product.

Penalties may be applicable for incorrect disposal of this waste, in accordance
with national legislation.

(Business users)

If you wish to dispose of this product, please visit our web page
www.jvc-europe.com to obtain information about the take-back of the product.

[Other Countries outside the European Union]

If you wish to dispose of this product, please do so in accordance with
applicable national legislation or other rules in your country for the treatment of
old electrical and electronic equipment.

FOR USA AND CANADA

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:TO REDUCE THE RISK OF ELECTRIC

SHOCK. DO NOT REMOVE COVER (OR

BACK). NO USER-SERVICEABLE PARTS

INSIDE.REFER SERVICING TO

QUALIFIED SERVICE PERSONNEL.

The lightning flash wish arrowhead
symbol, within an equilateral triangle is
intended to alert the user to the pres­ence of uninsulated "dangerous volt­age" within the product's enclosure that
may be of sufficient magnitude to con­stitute a risk of electric shock to per­sons.

The exclamation point within an equi­lateral triangle is intended to alert the
user to the presence of important op­erating and maintenance (servicing)
instructions in the literature accompa­nying the appliance.

2

Information for USA

This device complies with part 15 of the FCC Rules.
Changes or modifications not approved by JVC could
void the user's authority to operate the equipment.

This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant
to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against
harmful interference when the equipment is operated
in a commercial environment. This equipment
generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance
with the instruction manual, may cause harmful
interference to radio communications. Operation of
this equipment in a residential area is likely to cause
harmful interference in which case the user will be
required to correct the interference at his own
expense.

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1)This device may not cause harmful interference,
and (2) this device must accept any interference
received, including interference that may cause
undesired operation.

Due to design modifications, data given in this
instruction book are subject to possible change
without prior notice.

WARNING:
TO REDUCE THE RISK OF FIRE OR

ELECTRIC SHOCK, DO NOT
EXPOSE THIS APPLIANCE TO RAIN
OR MOISTURE.

AVERTISSEMENT:
POUR EVITER LES RISQUES

D’INCENDIE OU D’ELECTRO­CUTION, NE PAS EXPOSER
L’APPAREIL A L’HUMIDITE OU A LA
PLUIE.

INFORMATION (FOR CANADA)
RENSEIGNEMENT

This Class A digital apparatus complies with
Canadian ICES-003.

Cet appareil num rique de la Class A est

(POUR CANADA)

WARNING (FOR EUROPE):

This is a Class A product. In a domestic environment
this product may cause radio interference in which
case the user may be required to take adequate
measures.

● This installation should be made by a

qualified service person and should conform
to all local codes.

● This installation shall be in accordance with

the National Electrical Code, ANSI/NFPA 70.

● The unit is to be powered by an AC 24 V

power supply.
The AC 24 V power supply should conform to
the following:Class 2 only(For USA),Isolated
power supply only(For Europe and other).

● Any Mention in this manual of Alarm inputs/

outputs have not been evaluated by UL to be
used for Burglar Alarm Functionality.

This manual describes detailed usage of
VN-V25U/26U.
For basic usage of VN-V25U/26U, please
refer to AStart-up GuideB.
For latest information, please refer to
AReadmeB file in the CD-ROM.

● The supplied CD-ROM includes

AInstructions (this manual)B(pdf), AAPI
GuideB(pdf), ASearch toolB and AWhite
Spot Correction ToolB.

FOR USA-California Only

This product contains a CR Coin Cell Lithium
Battery which contains Perchlorate Material ­special handling may apply.
See
www.dtsc.ca.gov/hazardouswaste/perchlorate

ENGLISH

Dear Customer,
This apparatus is in conformance with the valid European directives and standards regarding

electromagnetic compatibility and electrical safety.
European representative of Victor Company of Japan, Limited is:

JVC Technology Centre Europe GmbH
Company name changed in:
JVC Technical Services Europe GmbH
Postfach 10 05 52
61145 Friedberg
Germany

DEUTSCH

Sehr geehrter Kunde, sehr geehrte Kundin,
dieses Gerät stimmt mit den gültigen europäischen Richtlinien und Normen bezüglich

elektromagnetischer Verträglichkeit und elektrischer Sicherheit überein.
Die europäische Vertretung für die Victor Company of Japan, Limited ist:

JVC Technology Centre Europe GmbH
Firmenname geändert in:
JVC Technical Services Europe GmbH
Postfach 10 05 52
61145 Friedberg
Deutschland

3

Getting Started

These are general IMPORTANT SAFEGUARDS and certain items may not apply to all appliances.

IMPORTANT SAFEGUARDS

1. Read all of these instructions.

2. Save these instructions for later use.

3. All warnings on the product and in the operating instructions should be adhered to.

4. Unplug this appliance system from the wall outlet before cleaning. Do not use liquid cleaners or

aerosol cleaners. Use a damp cloth for cleaning.

5.

Do not use attachments not recommended by the appliance manufacturer as they may cause hazards.

6. Do not use this appliance near water - for example, near a bathtub, washbowl, kitchen sink, or
laundry tub, in a wet basement, or near a swimming pool, etc.

7.

Do not place this appliance on an unstable cart, stand, or table. The appliance may
fall, causing serious injury to a child or adult, and serious damage to the appliance.

Use only with a cart or stand recommended by the manufacturer, or sold with the
appliance. Wall or shelf mounting should follow the manufacturer’s instructions,
and should use a mounting kit approved by the manufacturer. An appliance and
cart combination should be moved with care.

Quick stops, excessive force, and uneven surfaces may cause the appliance and
cart combination to overturn.

8. Slots and openings in the cabinet and the back or bottom are provided for
ventilation, and to insure reliable operation of the appliance and to protect it from
overheating, these openings must not be blocked or covered. The openings
should never be blocked by placing the appliance on a bed, sofa, rug, or other similar surface.

This appliance should never be placed near or over a radiator or heat register. This appliance should
not be placed in a built-in installation such as a bookcase unless proper ventilation is provided.

9.

This appliance should be operated only from the type of power source indicated on the marking label.
If you are not sure of the type of power supplied to your home, consult your dealer or local power
company. For appliance designed to operate from battery power, refer to the operating instructions.

10.For added protection for this product during a lightning storm, or when it is left unattended and
unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the product due to lightning and power-line surges.

11.Do not allow anything to rest on the power cord. Do not locate this appliance where the cord will be
abused by persons walking on it.

12.Follow all warnings and instructions marked on the appliance.

13.Do not overload wall outlets and extension cords as this can result in fire or electric shock.

14.Never push objects of any kind into this appliance through cabinet slots as they may touch

dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill
liquid of any kind on the appliance.

15.Do not attempt to service this appliance yourself as opening or removing covers may expose you to
dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

16.Unplug this appliance from the wall outlet and refer servicing to qualified service personnel under
the following conditions:

a. When the power cord or plug is damaged or frayed.
b. If liquid has been spilled into the appliance.
c. If the appliance has been exposed to rain or water.
d. If the appliance does not operate normally by following the operating instructions. Adjust only those controls

that are covered by the operating instructions as improper adjustment of other controls may result in damage

and will often require extensive work by a qualified technician to restore the appliance to normal operation.
e. If the appliance has been dropped or the cabinet has been damaged.
f. When the appliance exhibits a distinct change in performance - this indicates a need for service.

17.When replacement parts are required, be sure the service technician has used replacement parts
specified by the manufacturer that have the same characteristics as the original part. Unauthorized
substitutions may result in fire, electric shock, or other hazards.

18.Upon completion of any service or repairs to this appliance, ask the service technician to perform
routine safety checks to determine that the appliance is in safe operating condition.

PORTABLE CART WARNING

(symbol provided by RETAC)

S3125A

4

Contents

Getting Started ................................... 2

Safety Precautions ..................................... 2

Main Features ............................................. 6

Operating Environment ............................... 7

Cautionary Notes ........................................ 8

Name and Function of Parts ..................... 10

Front / Bottom / Side ............................. 10

Side ....................................................... 11

Rear ...................................................... 12

Features ................................................... 13

Setup Procedures ..................................... 15

Connection / Installation ................. 16

Mounting the Lens .................................... 16

Power Connection .................................... 17

Connecting to the AC 24 V power

supply ............................................ 17

Using the PoE ....................................... 18

LAN Cable Connection ............................. 19

Monitor Signal Output Terminal

Connection ........................................ 19

Connecting the audio signal output

terminal (VN-V26U only) ................... 19

Alarm Input/Output Terminal

Connection ........................................ 20

Alarm Input Terminal ............................ 20

Alarm Output Terminal .......................... 20

Mounting the Camera ............................... 21

Mounting to the Housing Using the Inner

Tripod Base ....................................... 22

Back Focus Adjustment ............................ 23

Network Requirements ............................. 24

Network Settings ............................. 27

IP Address Settings .................................. 27

Setting the IP address for

VN-V25U/26U ............................... 27

When the IP address of

VN-V25U/26U is known ................ 32

When the IP address of

VN-V25U/26U is unknown ............ 32

Setting Using Internet Explorer ......33

Setup ........................................................ 33

Internet Explorer Setup ......................... 33

Setting ...................................................... 36

View Page ............................................. 36

Camera Page ........................................ 38

Encoding Page ..................................... 44

Audio Page (VN-V26U only) ................. 46

Alarm Page ........................................... 47

Alarm Environment Page ...................... 52

Privacy Mask Page ............................... 56

Motion Detection Page ......................... 58

Basic Page ............................................ 60

Details Page ......................................... 62

Protocol Page ....................................... 63

Streaming Page .................................... 64

Access Restrictions Page ..................... 66

Time Page ............................................ 68

Password Page ..................................... 69

Maintenance Page ................................ 70

LED State Page .................................... 71

List of Factory Settings of Each Page ... 72

Miscellaneous Page .............................. 74

Operation Page ..................................... 75

Settings Page ....................................... 76

Operation ..........................................79

Operation of Built-in Viewer ...................... 79

Internet Explorer Setup ......................... 79

Installing the built-in viewer ................... 81

Screen Configuration of JPEG

Viewer ........................................... 82

JPEG Viewer Configuration .................. 84

Exiting the JPEG Viewer ....................... 87

Screen Configuration of MPEG4

Viewer ........................................... 88

MPEG4 Viewer Configuration ............... 90

Exiting the MPEG4 Viewer ................... 93

Audio Setup (VN-V26U only) ................ 94

Shortcut for Built-in Viewer ................... 96

Others ................................................97

Troubleshooting ........................................ 97

Specifications ......................................... 100

Dimension ........................................... 102

5

Getting Started

Main Features

䡵 High Picture Quality

The camera unit of this product employs a
330,000-pixel CCD (1/4") which enables high
quality video surveillance.

䡵 Support for Dual Stream

Simultaneous distribution of JPEG and MPEG4
images is possible.

䡵 Realization of Full Frame Rate

Data transmission is possible in VGA size at a
rate of 30 fps.

䡵 Support for Multicast

This product supports multicast, which enables
transmission of image data to multiple
computers on the network without lowering the
frame rate. (Audio is supported for VN-V26U)

䡵 Built-in Web Server

You can configure the picture quality and
communication settings using the Internet
Explorer.

䡵 HTTP-based API

This product comes with HTTP-based API. This
feature enables you to perform setting and
control via the network.

䡵 Electronic Sense Up

You can shoot images during surveillance at a
dark place by lengthening the exposure time to
enhance the camera’s sensitivity level.

䡵 Night Surveillance

This product comes with a low luminance
feature, which switches automatically to the high
sensitivity mode (black-and-white).
VN-V26U is equipped with an infrared ray cutoff
filter plug that enables day and night
surveillance. Turning off the infrared ray cutoff
filter when the light intensity level is low, such as
at night, enables you to switch to the high
sensitivity mode (B&W mode).
In the case of VN-V25U, you can switch to a
simple high sensitivity mode by turning off the
color signals when the light intensity level is low,
such as at night (Easy day and night mode).

䡵 Privacy Mask

You can configure the privacy mask setting to
hide specific area in shooting area.

䡵 Motion Detection

This feature enables output of an alarm upon
detection of motion in the video image within
preset area.
Pre-/Post-recorded image files may be sent via
FTP using the alarm input.

䡵 Support for PoE (Power over

Ethernet)

This product supports PoE (IEEE802.3af) and
enables power supply from a LAN cable.
PoE: class 2 (VN-V25U)

class 0 (VN-V26U)

䡵

Built-in JPEG and MPEG4 Viewer

Monitoring of JPEG and MPEG4 images via a
computer is possible by downloading the built-in
viewer onto the computer.
VN-V26U also enables monitoring of audio using
the computer.

䡵 Analog Monitor Signal Output (For

Installation)

This product comes with an analog video
monitor signal output terminal for adjusting the
camera angle during installation.

䡵 Compatibility with Conventional

Peripheral Devices

This product comes in the same shape as
conventional CCTV security cameras, and
therefore can be used with other peripheral
devices for security cameras such as housings.

䡵 Built-in microphone and audio output

terminal (VN-V26U only)

Built-in microphone enables sending audio to
computers. And this product can receive audio
from a computer and output to audio terminal.

6

How to use this manual

䡵 Symbols used

Caution : Describes precautions concerning

the operation of this product.

Note : Describes reference information,

such as functions and usage
restrictions of this product.

A : Indicates the reference page

numbers and reference items.

䡵 Diagrams and images on features

that are common between VN-V25U
and VN-V26U are indicated as
VN-V25U.

䡵 Content of this manual

● All rights reserved by JVC. Unauthorized

duplication or reprinting of this manual, in
whole or in part, is strictly prohibited.

● Windows is a registered trademark of

Microsoft Corporation in the U.S.

● All other product names used in this

manual are trademarks or registered
trademarks of their respective companies.
Marks such as 姠, 姞 and 姝 have been
omitted in this manual.

● Illustrated designs, specifications and other

contents of this manual are subject to
changes for improvement without prior
notice.

Operating Environment

䡵 Recommended Computer

Specifications

OS : Windows XP (Professional or

CPU : Pentium4 1.5 GHz or higher

Memory capacity

Free hard disk space

Display and video card

Sound card (VN-V26U only)

Web browser : Internet Explorer

䡵 LAN Environment

● 10BASE-T/100BASE-TX network

interconnected using devices such as an
IEEE802.3-compliant switching hub.

● IEEE802.3af-compliant switching hub when

PoE is in use.
IGMPv2-compliant network when multicast is

●

in use.

Home Edition) (SP2)

: 1 GB or more

: 512 MB or more

: 1024⳯ 768 pixels or larger,

True Color (24 or 32 bits)
VRAM 8 MB or more (256 MB
and above recommended)

: Sound Blaster (PCI

recommended)

Version 6.0

Note:

● The above PC specifications are guides for

smooth use of the applications, and not a
guarantee of their operation.

● Depending on the condition of use,

applications may not run smoothly even
when the user’s computer meets the
specification requirements.

● Using a computer for which its performance

does not meet the requirements may cause
the JPEG playback frame rate to deteriorate.
In addition, it also causes delay in the
MPEG4 playback images, and may result in
interruption in playback.
Audio may be interrupted. (VN-V26U only)

● To make use of the built-in MPEG4 Viewer of

VN-V25U/26U, install “ffdshow” that is open
source codec. You can download “ffdshow”
from the Internet.

● AD/DA clock varies significantly depending

on the sound card built in the PC. Using such
card may cause overflow or underflow of
audio data and noise may occur in the
playback sound.

7

Getting Started

Cautionary Notes

Maintenance and location of use

䢇 This product is intended for use indoors.

Make sure that you use a housing etc., when
using it outdoors.

䢇 Do not place this product in the following

environments.
Otherwise, it may malfunction or break down.

● Hot or cold locations beyond the

surrounding temperature range of -10°C
to 50°C.

● Locations beyond the allowable operating

humidity range of 20 % to 85 %.
(condensation is not allowed)
Near equipment that emits strong magnetic

●

fields, such as transformers or motors.

● Near equipment that emits radio waves,

such as transceivers and mobile phones.

● Locations with excessive dust or sand.

● Locations that are subject to excessive

vibration.

● Locations prone to moisture such as

window side.

● Locations subject to steam or oil, such as

kitchens.

● Locations that emit radiation, X-rays or

corrosive gases.

䢇 Use of this product or cables connected to

this product at locations where strong electric
waves and magnetic fields are emitted (e.g.,
near radio, TV, transformer, monitor, etc.)
may cause noise interferences in the images
or changes in the color.

䢇 Do not install this product at locations that

may trap heat.
This product also discharges heat from the

surface of the camera unit. As such, do not
install it at locations that may trap heat, such
as near walls.

Handling Precautions

䢇 Do not hang on this product, shake it, or hand

objects over it. Applying an excessive load
may cause the product to fall off and result in
accidents.

䢇 Do not stack up the equipment.

Heat or noise of an equipment may cause
malfunction or failure of the other, and result
in fire.

䢇 Do not block vents around the equipment.

Inadequate heat ventilation may result in
malfunction of this product. Be sure not to
block vents around the product.

Saving Energy

䢇 When this product is not in use for a long

period of time, turn off the power of the
system to ensure safety and reduce power
consumption.

Maintenance

䢇 Be sure to turn off the power before

performing maintenance.

䢇 Wipe this product using a soft cloth.

Wiping with thinner or benzene may melt or
tarnish its surface. For dirt that cannot be
easily removed, wipe using a neutral
detergent diluted with water, followed by
wiping with a dry cloth.

Copyright Protection

䢇 With the exception of the user being the

copyright holder or when permission such as
for duplication has been granted by the
copyright holder, permission is required in
principle for the duplication, modification, or
transmission of copyrighted video and audio
data.
Unauthorized duplication, modification, or
transmission of copyrighted material may
constitute a copyright infringement, and the
user may be liable to compensate for any
damages. When using copyrighted video/
audio data, be sure to check the license
agreement of the copyrighted material
thoroughly.
When rights or rights holders are involved
with regard to the targeted duplicating
subject, permission may be required for
shooting or using (processing) it. Be sure to
check the licensing conditions thoroughly.

Exemption of Liability

䢇 The motion detection feature is not a feature

to prevent theft or fire. JVC shall not be liable
for any damage that occurs.

䢇 JVC shall not be liable for any damage due to

the invasion of privacy by images of this
camera.

Others

䢇 The cable stopper of the alarm terminal may

come off in some cases. When mounting the
cables, make sure to do so carefully.

8

䢇 If a high luminance object (such as a lamp) is

shot, a white smear may appear at the upper
and lower ends of this object on the screen.
This phenomenon (smear) is characteristic of
solid-state image sensors, and is not a
malfunction.

䢇 Some hubs/switches of products that are

equipped with intelligent features may
include a broadcast/multicast suppression
function. Viewing of multicast images on this
product may fail if this function is enabled.

䢇 Electricity can be supplied to this product

either by connecting the AC 24 V power
supply or using the PoE. Make sure to select
only one mode of electrical supply.
Connecting the power cord and the LAN
cable for the PoE at the same time may result
in f ai lure or ma lfuncti on of the ca me ra.
(A Page 17, 18)

䢇 This product comes with a built-in AGC

circuit. When using this product with AGC set
to AMidB, AHighB or ASuperB, the sensitivity
level increases when the image is dark, and
the screen may appear grainy as a result.
However, this is not a malfunction.

䢇 When using this product with the white

balance set to AATWB, the displayed color
may differ slightly from the actual color
according to the condition of the object due to
the principle of the automatic tracking white
balance circuit. This is not a malfunction.

䢇

The electronic shutter of this product is set to

A

1/30B by default. For regions with a
commercial power supply frequency of 50 Hz,
switch to the flickerless mode during use
under fluorescent lights (excluding inverter
lighting equipment) to prevent flickers.

䢇 When the Black-and-white mode (VN-V26U)

or Easy Day and Night mode (VN-V25U) is
enabled, the image becomes black-and-white
in a dark place. As the sensitivity level is
increased in this case, the screen may
appear grainy and more white spots may
appear. When switching between color and
black-and-white images, the brighter area on
the screen is emphasized, which may reduce
the visibility. However, this is not a
malfunction.

䢇

If the power supply voltage is momentarily cut
off or reduced due to lightning, turning on of
the air conditioner’s power, etc., the image
may be disrupted or noise interference may
occur.

䢇

When using multicast, make use of a
IGMPv2-compliant network switch.

䢇

In the case of VN-V26U, the image and sound
may not synchronize when playing back using
built-in viewer. This is not a malfunction.

䢇

When VN-V26U is sending high bitrate, the
image and sound can be paused during
Black-and-white mode changing. This is not a
malfunction.

9

Getting Started

Name and Function of Parts

Front / Bottom / Side

The model illustrated in the diagram is VN-V26U.

A

B

C

Back Focus Adjustment Ring

A

This ring is used for back focus adjustment and
switching the lens mount method.
To operate, loosen the I back focus fastening
screw by turning it in the anti-clockwise direction,
and turn the screw in the clockwise direction to
fasten after operation is complete.
This product is pre-adjusted to a position that is
best suited for CS mount.
(A Page 23)

B Lens Mount

This is a mount for mounting the lens.
The mount is compatible with CS mount lens
and C mount lens.
(A Page 16)

C Camera Mounting Bracket Fastening

Screw (2 pcs: M2.6 x 6 mm)

Use screws with a length of 6 mm. Screws
beyond the specified length must not be used as
doing so may damage the interior.

I
H

G

F

E

D

Use screws with a length between 5 mm to
7 mm. Screws beyond the specified length may
damage the interior, while those shorter than
specified may cause the camera to fall off, and
therefore these must not be used.
(A Page 21)

F Built-in Microphone (VN-V26U only)

Audio picked up using this microphone is sent to
computers.

G [MAC address] Indicator

The MAC address is a unique physical address
of the product. This address cannot be altered.

H Camera Mounting Bracket

This bracket is pre-mounted to the bottom
surface of the camera. It can also be mounted to
the top surface according to the usage. Mount it
to the screw holes at the top surface using the C
camera mounting bracket fastening screws.
(A Page 21)

J

D Anti-rotation Hole

Use this anti-rotation hole to mount the camera
firmly.

E Camera Mounting Screw Holes

(1/4-20UNC)

Use this hole when mounting this product to a
fixer or rotating platform.

10

I [BF LOCK] Back Focus Fastening Screw

This is the fastening screw for the back focus
adjustment unit. (A Page 23)

J Inner Tripod Base Screw Hole (1/4-20UNC)

Use this hole when mounting this product to a
miniature housing.
You can mount to the housing through this hole
directly without using the H camera mounting
bracket. (A Page 22)

Side

MONITOR OUT

STATUS

K

[MONITOR OUT] Monitor Output Selection
Switch

Use this switch to select the availability of output
from the O [MONITOR OUT] terminal as well as
the signal system.
NTSC : Outputs NTSC signals.
OFF : No output. Select this value when

distributing images to the network.
PAL : Outputs PAL signals.
[Default setting: OFF]

Caution:

● Images are not distributed to the network

when ANTSCB or APALB is selected.

● When the switch is changed, press the L

Reset button to reboot the unit.

L [RESET] Reset Button

This is a button for rebooting the camera. Press
this button and release within 5 seconds to
reboot the camera.
It takes about one minute for the camera to
reboot. During startup, the [RESET] button is
disabled.

Note:

Pressing the [RESET] button for 5 seconds or
longer switches the camera to the service
verification mode. Do not press the button for 5
seconds or longer.

M [IRIS] Iris Terminal

Use this terminal to connect the DC iris lens.
(Connection with the video iris lens is not
possible.)
(A Page 16)

N [STATUS] Status Indicator

This status of this product is indicated in green
or orange color.
Starting up: Lights up in orange
Startup complete: Lights up in green
Error: Blinks in orange

K

L

PAL OFF NTSC

RESET

IRIS

MN

Note:

You can adjust the [LED State] settings via the
network to turn off the indicator after startup is
complete. (A Page 71)

11

Getting Started

Rear

VN-V25U

R

1

AC24V

MONITOR

CLASS 2 ONLY FOR USA

ISOLATED POWER ONLY

FOR EUROPE AND OTHER

SEE INSTRUCTION MANUAL

CAUTION

: NEVER USE

DO NOT CONNECT TO THE TELEPHONE NETWORK

Q

2

G 2 1 2 1

INPUT

PoE

OUT

10BASE-T/
100BASE-TX

PoE

AND

AC 24V

ALARM

AT THE SAME TIME

OUTPUT

SS

PUSH

PO

[MONITOR OUT] Monitor Video Signal

O

Output Terminal (RCA)

This is an output terminal for composite video
signals (1 V (p-p), output impedance of 75 K).
Use this terminal to connect to devices such as a
video monitor.
This terminal is used for adjusting the camera
angle during installation. (A Page 19)

Note:

● Use the K [MONITOR OUT] switch to select

the availability of output as well as the signal
system. When the switch is changed, press
the L Reset button to reboot the unit.

● When using the [MONITOR OUT] output, set

the privacy mask to AOffB. (A Page 56)

P [10BASE-T/100BASE-TX]

Use this terminal to connect to the network via a
LAN cable.
This product supports PoE (IEEE802.3af) and
therefore can be used without a power cable.
PoE: class 2 (VN-V25U)

class 0 (VN-V26U)

(A Page 17)(A Page 19)

Q [ALARM INPUT/OUTPUT] Alarm Input/

Output Terminals

Use these terminals to connect to an external
alarm device.
(A Page 20)

R [AC24V] Power Input Terminal

Use this terminal to connect to an AC 24 V,
50/60 Hz power supply.

(A Page 17)

VN-V26U

R

1

AC24V

MONITOR

CLASS 2 ONLY FOR USA

ISOLATED POWER ONLY

FOR EUROPE AND OTHER

SEE INSTRUCTION MANUAL

CAUTION

: NEVER USE

DO NOT CONNECT TO THE TELEPHONE NETWORK

O

Q

2

G 2 1 2 1

INPUT

PoE

OUT

10BASE-T/
100BASE-TX

PoE

AND

AC 24V

ALARM

AT THE SAME TIME

AUDIO OUT

PUSH

OUTPUT

T

P

S Fall Prevention Wire Mounting Screw

(M3 x 6 mm)

Use this screw to mount the fall prevention wire.

A

Page 21)

(

T [AUDIO OUT] Audio signal output terminal

(mini jack R3.5 mono) (VN-V26U only)

Outputs audio (analog) received from a
computer.
Does not output audio from the F built-in­microphone.

12

Features

r

Surveillance via Dual Stream

Surveillance Using the Built-in Viewer

VN-V25U/26U comes with a built-in ActiveX
JPEG Viewer and MPEG4 Viewer.
JPEG images and MPEG4 images of
VN-V25U/26U can be monitored using the
computer by installing this built-in viewer on the
computer. JPEG images that are currently
displayed can also be captured in the
computer’s hard disk.
For VN-V26U, you can check the audio of the
built-in microphone using the computer.
AOperation of Built-in ViewerB (A Page 79)

VN-V25U/26U

MAC address

Network

Computer

VN-V25U/26U accepts requests from 20 clients
at maximum.

Monitoring via Multicast

Multicast enables monitoring of JPEG and
MPEG4 images on multiple computers.
For VN-V26U, you can check the audio of the
built-in microphone using the computer.

AStreaming PageB (A Page 64)
AJPEG Viewer ConfigurationB (A Page 84)
AOperationB (A Page 90)

Simultaneous distribution of JPEG and MPEG4
images enables real-time surveillance using
MPEG4 (30 fps) and recording of JPEG images
at the same time. You can also lengthen the
recording time by lowering the frame rate,
resolution, and picture quality settings for JPEG
images.

Real-time Surveillance

VN-V25U/26U

MAC address

Using MPEG4

Computer

Network

Storage Device

Recording JPEG Images

Saving JPEG images to the FTP server
at regular intervals

JPEG images may be uploaded to the FTP
server at regular intervals.
AFTPB (A Page 53)

VN-V25U/26U

MAC address

VN-V25U/26U

MAC address

IGMP­Compliant
Network

Computer

Compute

Computer

Network

Uploads the latest JPEG
images to the FTP server
at regular intervals

Computer

13

Getting Started

MAC address

Sending audio to the network (VN-V26U
only)

Sends out audio picked up using the built-in
microphone of VN-V26U to computers.

VN-V26U

MAC address

Built-in
mike

Network

Headset

Computer

Receiving and outputting audio from
the computer via the network (VN-V26U
only)

Receives audio that is input to a computer, and
outputs the audio to a speaker that is connected
to [AUDIO OUT] terminal of VN-V26U.

Speaker with
amplifier

VN-V26U

MAC address

Headset

Alarm

VN-V25U/26U comes with a motion detection
feature and dual alarm input.
By motion detection or alarm input, actions such
as mail delivery, message transmission via TCP/
UDP, alarm output can be triggered. These
actions can also be triggered by combination of
two alarm inputs.
Installing an FTP server enables uploading of
JPEG images before and after the alarm input
time (pre-/post-recording) to the server.

AAlarm PageB (A Page 47)
AJPEG Viewer ConfigurationB (A Page 84)

VN-V25U/26U

Sending JPEG images
before and after alarm
input to FTP

Alarm Device

Network

Computer

Restrictions on Clients

VN-V25U/26U enables users to authorize or
reject the acquisition of images by specific IP
address.

A

Page 66)

(

Network

Computer

Note:

● Use of a headset for audio input/output of the

computer is recommended to prevent
howling.

14

Control via customized application
software

The following uses are also possible by
developing a customized application software
that supports the API of VN-V25U/26U.
For details, please refer to AAPI GuideB in the
supplied CD-ROM.

● Monitors via the computer while at the same

time records images to the HDD of the
computer.

● Performs recording by changing the frame

size/frame rate during alarm occurrence.

● Records the type and time of alarm

occurrence on the computer.

Setup Procedures

Step 1 Connection/Installation (APage 17)

Connect the lens mount, power supply cord,
LAN cable and alarm.
Next, mount the camera to the ceiling.
Remember also to mount the fall prevention
wire. After the camera is mounted, connect the
video monitor to the [MONITOR OUT] terminal
at the rear of the unit, followed by adjusting the
camera angle.
You can select the video signals of the
[MONITOR OUT] terminal using the
[MONITOR OUT] switch. (
(Back focus adjustment
([MONITOR OUT] switch

T After adjusting the camera angle using the

[MONITOR OUT] terminal, set the
[MONITOR OUT] switch to AOFFB. Images
are not distributed to the network when
ANTSCB or APALB is selected. After changing
the [MONITOR OUT] switch setting, press
the Reset button to reboot the camera.

A

NTSCB or APALB)

A

Page 23)

A

Page 11)

G

Step 2 Network settings (A Page 27)

Configure the network settings of the
computer and this camera.

T In a system where multiple units of VN-V25U/

26U are used, turn on the power of only one
unit to configure the IP address settings
using the Internet Explorer. Upon doing so,
turn on the power of the second unit and
configure accordingly. Configure the settings
for the other cameras using the same
procedure.

G

Step 3 Configuring settings using the
Internet Explorer (A Page 33)

Configure the picture quality and alarm
settings using the Internet Explorer.

G

Step 4 Operating the built-in viewer
(A Page 79)

The built-in viewers enable you to monitor
JPEG and MPEG4 images and save JPEG
images.

15

Connection / Installation

STATUS

MONITOR OUT

IRIS

PAL OFF NTSC

RESET

3

42

1

3.

2.

Mounting the Lens

1.Check the mounting method of the lens to

be used before mounting

● The default method used for this camera is

CS mount. To use a C mount lens, loosen the
back focus fastening screw using a
screwdriver, followed by turning the back
focus adjustment ring using a finger or
pointed object (e.g., screwdriver, etc.) to
change the mount method.

● Make use of the values listed in the table

below for the dimensions of the lens mount
(a) indicated in the following diagram.

Lens

C Mount
Lens

CS Mount
Lens

● Objects longer than the dimension (a) must

not be used as doing so may damage the
camera interior or prevent the lens from
being properly mounted, hence resulting in
malfunctions.

Flange Focus (b)

Dimension (a)

17.526 mm VN-V25U: 10
mm and below
VN-V26U: 5.5
mm and below

12.5 mm 5.5 mm and
below

2.Turn the lens in the clockwise direction to

mount it to the camera firmly

3.When using a DC iris lens, pay attention

to the pin position before connecting the
lens cable

4.Pin Plug

3

1

4

2

16

DC Iris Lens

Loosen

Back Focus Fastening
Screw (M2.6)

(a)

F

Pin No.

(Without Built-in EE Amplifier)

1 Damping (-)

2 Damping (+)

3 Driving (+)

4 Driving (-)

(b)

Power Connection

Electricity can be supplied to this product either
by connecting to the AC 24 V power supply or
using the PoE (A Page 18).

When power is supplied to this product, the

䢇

[STATUS] indicator at the side lights up. The
indicator lights up in orange color during
startup, and switches to green color after
startup is complete.
You can select not to light up the [STATUS]
indicator when the unit is running. (

Caution:

●

Make sure to select only one mode of electrical
supply. Connecting the power cord and the
LAN cable for the PoE at the same time may
result in failure or malfunction of the camera.

● Be sure to use an AC 24 V supply that is

isolated from the primary power supply
circuit. Using a variable voltage power supply
will cause the camera and system to
malfunction or breakdown.

Connecting to the AC 24 V power supply

Connect this product to the AC 24 V power
supply when the PoE is not used.

Caution:

●

Make sure to select only one mode of electrical
supply. Connecting the power cord and the
LAN cable for the PoE at the same time may
result in failure or malfunction of the camera.

● The unit is to be powered by an AC 24 V

power supply.
The AC 24 V power supply should conform to
the following: Class 2 only (For USA),
Isolated power supply only (For Europe and
others).

2

1

AC24V

MONITOR

OUT

CLASS 2 ONLY FOR USA

ISOLATEDPOWER ONLY

FOR EUROPE AND OTHER

SEE INSTRUCTION MANUAL

CAUTION

:NEVER USE

DO NOT CONNECT TO THE TELEPHONE NETWORK

INPUT

PoE

PoE

AC 24V

AND

G 2121

10BASE-T/
100BASE-TX

AT TH E S AM E TI ME

ALARM

A

Page 71)

To Power
Supply

OUTPUT

PUSH

MONITOROUT

PAL OF F NTSC

STATUS

IRIS

Status Indicator

RESET

䢇 Power cord

● To prevent misconnection and detachment of

cords, use a lug plate to connect the cord to
the terminal.

● When a two-core VVF (vinyl insulated vinyl

sheath cable) is used, the connection
distance is as follows. (Reference value)

Conductor Diameter
(AWG No.)

Maximum
Extension

VN-V25U 150 m 400 m 630 m

VN-V26U 90 m 240 m 370 m

R

1.0 mm
(18) and
above

R

1.6 mm
(14) and
above

R

2.0 mm
(12) and
above

Warning

The rated power of this product is AC 24 V,
50 Hz/60 Hz. Make sure to use it with the
correct voltage.
Use an AC 24 V supply that is isolated from
the primary power supply.
Supplying a power beyond the rated value
may result in failures, smoke or fire. When the
camera breaks down, turn off the power and
contact our service center immediately.
When a power beyond the rated value is
supplied, the internal components may be
damaged even if no abnormality is found on
the appearance and operation of the camera.
Please contact our service center immediately
for servicing (charged separately).

Note:

●

After DHCP timeout, all IP addresses of
VN-V25U/26Us are set to 192.168.0.2 by default.
When the power of multiple cameras within the
same LAN environment are turned on at the
same time, the IP address of the cameras
overlap, thus preventing proper access. As such,
make sure to turn on the power of the cameras
one by one.

17

Connection / Installation

● In a system where multiple units of VN-V25U/

26U are used, turn on the power of only one
unit to configure the IP address settings
using the Internet Explorer. Upon doing so,
turn on the power of the second unit and
configure accordingly. Configure the camera
settings using the same procedure.

● When overlapping of the IP address occurs,

check to ensure that there is only one
VN-V25U/26U unit within the same LAN
environment, and wait for a while (at least 10
minutes) or power off and on all network
devices under the same LAN environment.
Otherwise, access to VN-V25U/26U may fail.

Using the PoE

Connect to a device that supports PoE to supply
electricity from the LAN cable.

2

1

G 2121

MONITOR

OUT

INPUT

PoE

10BASE-T/
100BASE-TX

PoE

AC 24V

AND

AC24V

CLASS 2 ONLY FOR USA

ISOLATEDPOWER ONLY

FOR EUROPE AND OTHER

SEE INSTRUCTION MANUAL

CAUTION

:NEVER USE

DO NOT CONNECT TO THE TELEPHONE NETWORK

ALARM

AT THE SAME TIME

OUTPUT

PUSH

Connect to PoE­compatible device

Note:

● For details on the connection method and

cable type, please refer to ALAN Cable
ConnectionB (A Page 19).

What is PoE (Power over Ethernet)?

This is a function that enables operation of a
LAN equipment without a power cable by
supplying power simultaneously with the data
using a LAN cable.

18

LAN Cable Connection

Connect the camera to a hub or computer using
a LAN cable.

Cable to use

● Shielded cable

● Length of 100 m or shorter

䡵 When connecting to a hub

Make use of a straight cable.

䡵 When connecting to a computer

Make use of a cross cable.

2

1

1

AC24V

AC24V

CLASS2ONLYFORUSA

ISOLATEDPOWER ONLY

FOR EUROPEAND OTHER

SEEINSTRUCTION MANUAL

CAUTION

:NEVER USE

DONOT CONNECT TO THE TELEPHONE NETWORK

CLASS2ONLYFORUSA

ISOLATEDPOWER ONLY

FOR EUROPEAND OTHER

SEEINSTRUCTION MANUAL

CAUTION

:NEVER USE

DONOT CONNECT TO THE TELEPHONE NETWORK

Caution:

● However, cross cables cannot be used with

some computer models. When connecting
VN-V25U/26U directly to a computer, check
the computer’s LAN specifications in
advance.

Note:

● Make use of a Category 5 (or higher) cable

when 100BASE-TX is used.

● To distribute images to the network, set the

[MONITOR OUT] switch at the side of this
product to AOFFB.

[MONITOR OUT] Switch

MONITOROUT

2

MONITOR

OUT

MONITOR

OUT

STATUS

INPUT

INPUT

PoE

PoE

PoE

AC 24V

AND

PoE

AC 24V

AND

G 2121

G 2121

ALARM

ALARM

10BASE-T/
100BASE-TX

AT THE SAME TIME

10BASE-T/
100BASE-TX

AT THE SAME TIME

PAL OF F NTSC

OUTPUT

OUTPUT

PUSH

PUSH

RESET

Monitor Signal Output Terminal Connection

This terminal is used for adjusting the camera
angle during installation. Connect it to devices such
as a video monitor using a video cable (RCA).

2

1

AC24V

CLASS2ONLYFORUSA

ISOLATEDPOWER ONLY

FOR EUROPEAND OTHER

SEEINSTRUCTION MANUAL

CAUTION

:NEVER USE

DONOT CONNECT TO THE TELEPHONE NETWORK

MONITOR

OUT

INPUT

PoE

PoE

AND

AC 24V

G 2121

ALARM

10BASE-T/
100BASE-TX

AT THE SAME TIME

OUTPUT

PUSH

Caution:

● A longer cable extension distance causes

signals to be attenuated, image resolution to
deteriorate and noise to increase.

Note:

●

Select the signal system for the monitor output
using the [MONITOR OUT] switch at the side of
this product. (
After adjusting the camera angle, set the switch

A

OFFB. After changing the switch settings,

to
press the Reset button to reboot the camera.

A

NTSCB or APALB)

Connecting the audio signal
output terminal (

Connect to the speakers with a built-in amplifier,
etc. using mini jack (R3.5 mono) cable.

Y

THER

WER ONL

OPEAND O

CLASS 2 ONLYFOR USA

ISOLATEDPO

FOR EUR

SEEINSTRUCTION MANUAL

CAUTION

DONOT CONNECT TO THE TELEPHONE NETWORK

VN-V26U only

2

1

AC24V

:NEVER USE

MONITOR

OUT

G

INPUT

PoE

10BASE-T/
100BASE-TX

PoE

AC 24V

AND

AT THE S A ME T I ME

2121

ALARM

AUDIO OUT

PUSH

)

OUTPUT

IRIS

19

Connection / Installation

DC3.3 V

R

3.3 V

1 mA

VCC

OUT

GND

GND

OUT

R

IN

R

DC 12 V

GND

Alarm Input/Output Terminal Connection

Connect the alarm input/output terminals with
external devices, such as a sensor or buzzer.
Plug/Unplug the cable while pressing the button
as shown in the diagram below.

Cable to use

● Shielded cable

● Length of 50 m or shorter

2

1

AC24V

MONITOR

OUT

CLASS 2 ONLY FOR USA

ISOLATEDPOWER ONLY

FOR EUROPE AND OTHER

SEE INSTRUCTION MANUAL

CAUTION

:NEVER USE

DO NOT CONNECT TO THE TELEPHONE NETWORK

PoE

Push

G 2121

INPUT

ALARM

PoE

10BASE-T/
100BASE-TX

AC 24V

AND

AT THE SAME TIME

OUTPUT

PUSH

VN-V25U/26U

INPUT 1 or
2 Terminal

G Terminal

(Alarm Input Equivalent Circuit)

Sensor Example

(1)

Sensor Example

(2)

Relay Switch, etc.

Alarm Output Terminal

Connect this terminal to annunciating devices,
such as annunciators, indicators, lights, or
buzzers.

䡵 Output requirements

● Equivalent to NPN open collector output (Set

the output logic using the Internet Explorer)

● Allowable applied voltage: DC12 V and below

● Allowable inflow current: 50 mA

Momentary (100 ms - 5000 ms) output

●

(Set time using the Internet Explorer
(A Page 52))

Caution:

● Noises from an external source may cause

the camera to malfunction even when the
cable used is within 50 m. In this case, move
the cable away from the noise source.

Alarm Input Terminal

Connect this terminal to sensor devices, such as
an infrared sensor, door sensor, metal sensor or
manual switch.

䡵 Input requirements

● No-voltage relay NPN open collector input

● Polarity of input detection can be selected

using a software

● Make/Break (500 ms and above)

● Circuit current at low level: 1 mA

● Applied voltage at high level: 3.3 V

20

Annunciating

VN-V25U/26U

OUTPUT 1
or 2 Terminal

G Terminal

(Alarm Output Equivalent Circuit)

Device Example

Caution:

● Connect the G terminal of this camera to the

GND terminal of the annunciating device or
alarm input sensor.

Mounting the Camera

Use the screw hole on the camera mounting
bracket to mount this camera to a fixer or
rotating platform.

Camera
Mounting
Screw Hole
1/4-20UNC

Camera Mounting
Bracket Fastening Screw
(2 pcs: M2.6 x 6 mm)

䡵 Mounting the camera mounting

bracket on the top of the camera

Camera
Mounting
Bracket

Anti-rotation Hole

Camera
Mounting
Bracket

Fall
Prevention
Wire

M3x6 mm

(15/64 inch)

6 mm

2 mm and below

Caution:

● When mounting the camera, use screws with

a length between 5 mm to 7 mm from the
mounting surface. Screws beyond the
specified length may damage the interior,
while those shorter than specified may cause
the camera to fall off, and therefore these
must not be used.

1/4-20UNC

5 mm and
above

7 mm and
below

Caution:

● The camera mounting bracket is mounted on

the bottom surface of the camera by default.
To mount it to the top surface, do so by
removing the two fastening screws from the
camera mounting bracket. Make sure to
fasten the screws firmly.

21

Connection / Installation

Warning

● Special attention is required when mounting

the camera to a wall or ceiling. Users
should get professional contractors to
perform mounting operations instead of
doing it themselves. Failure to do so may
cause the camera to fall off and result in
injuries or accidents.

● When mounting the camera to a fixer or

rotating platform, ensure that the camera is
firmly mounted by using the anti-rotation
holes to prevent it from falling off.

● To prevent the camera from falling off,

ensure that it is connected to a firm place
(ceiling slab or channel) using a fall
prevention wire.

● Pay also careful attention to the length,

strength, wiring, and material (insulating
properties) of the fall prevention wire to be
used. The length used should be as short
as possible within the permissible range of
the mounting length. The wire should be
strong enough to withstand the total weight
of this product and the fixer. (Pay also
attention to the finishing at the end of the
wire.)

● Mount the fall prevention wire using the

black screw at the rear of the camera unit.

● Designated screw for fastening of fall

prevention wire (M3 x 6 mm): Screws
beyond the specified length must not be
used as doing so may damage the interior.

Mounting to the Housing Using the Inner Tripod Base

This product comes with an inner tripod base at
the bottom surface. You can use the inner tripod
base by removing the camera mounting bracket
that is attached to the bottom surface. Mount this
product to the miniature housing using the screw
hole of the inner tripod base.

Inner Tripod Base

Camera Mounting
Bracket

Remove the screws for the bracket (2 pcs)

Bottom Surface

22

Inner Tripod Base Screw Hole (1/4-20UNC)

Inner Tripod Base Mounting Screw

Make use of 1/4-20UNC screw. The length of
the mounting screw shall be between 6 mm to
7 mm from the mounting surface.

Caution:

● Using a screw with a length longer than

specified may damage the internal parts of
the camera, while using a length shorter than
specified may cause the camera to fall off.
Use a washer to adjust the length from the
mounting surface.

Max. 7 mm
(17/64 inch)

Mounting Plate

Washer

Min. 6 mm
(15/64 inch)

Back Focus Adjustment

The CS mount is adjusted to the widest point of
the applicable range by default. When using the
zoom lens or C mount lens, or when the lens
remains out of focus upon using the focus ring,
readjustment is required.

● Follow the method below when necessary to

adjust the back focus.

● In order to adjust the back focus accurately,

do so according to the steps below upon
opening the lens iris using the iris adjustment
and ND filter.
(ND filter is a filter that is used to evenly
reduce the amount of light entering the lens
at all wavelengths.)

● Connect a video monitor to the [MONITOR

OUT] terminal at the rear of the unit, followed
by adjusting as follows.

Back Focus Adjustment Ring

Fixed focus lens

Adjust when the lens cannot be brought into
focus using the focus ring.

1.Loosen the back focus fastening screw by

using a Phillips screwdriver and turning it in
the anti-clockwise direction

2.Shoot the object or a fine pattern that is

farther away than the object

3.Set the focus ring of the lens to ∞

4.Turn the back focus adjustment ring to obtain

a sharp focus

5.Tighten the back focus fastening screw by

turning it in the clockwise direction, and
ensure that it is securely fastened

Zoom lens

Perform the zooming operation (Tele - Wide)
and adjust accordingly if it is out of focus.

1.Loosen the back focus fastening screw by

using a screwdriver and turning it in the anti­clockwise direction

2.Shoot the object or a fine pattern that is

farther away than the object

3.Set the zoom lens to Tele and turn the lens

focus ring to adjust the focus

4.Set the zoom lens to Wide and turn the back

focus adjustment ring to adjust the focus

5.Repeat Steps 3. and 4. for two to three times

6.Tighten the back focus fastening screw by

turning it in the clockwise direction, and
ensure that it is securely fastened

Tighten

Loosen

Back Focus Fastening
Screw (M2.6)

Lens Focus Ring

23

Connection / Installation

Network Requirements

●

Ensure that there is sufficient network
bandwidth for the data volume to be sent out
by VN-V25U/26U. Do not send multicast
stream that exceeds the bandwidth. If the
entire bandwidth is used by the multicast
stream, control of this camera via the network
may fail.

●

Data volume to be sent by VN-V25U/26U varies
with the settings and number of distributions.

●

The maximum bit rate for transmission is
about 20 Mbps.

Estimation of Total Bit Rate

The total JPEG bit rate from VN-V25U/26U is
determined by the VN-V25U/26U settings,
number of clients, and the client’s requested
number of frames. The total MPEG4 bit rate
from VN-V25U/26U is determined by the number
of distributions. Develop a design upon taking
the above into consideration.

Bit Rate of JPEG Stream

The JPEG file size per frame varies with the
encoding settings as well as input video signals.
The following table may be used as a reference.
When VFS is selected, the quantization table
during JPEG encoding will be maintained, and the
file size will increase/decrease according to the
input signals. When AFS is selected, encoding will
be performed such that the target file size is the
average size of multiple JPEG images.

Picture Quality
Control Method

VFS
(Variable

File Size)

AFS
(Average File Size)

The maximum number of distributions varies
with the bit rate settings as well as the client’s
requested frame rate. Up to 20 streams can be
distributed (including multicast). The total frame
rate refers to the sum of these frame rates.

1 (High) 80 KB 27 KB

2 60 KB 20 KB

3 40 KB 13 KB

4 (Medium) 30 KB 10 KB

5 25 KB 8 KB

6 20 KB 7 KB

7 (Low) 15 KB 5 KB

VGA File
Size

Selectable
between
10 KB ­100 KB

QVGA File
Size

Selectable
between
3 KB ­33 KB

For example, when 10 fps is requested by two
clients, and in addition, multicast is transmitted
at a rate of 10 fps, the total frame rate will be:

10 + 10 + 10 = 30 fps

If the JPEG file size per frame is 30 KB, then the
total bit rate will be:

30 KB x 30 fps = 900 KB/s = Approx. 7.2 Mbps

Bit Rate of MPEG4 Stream

You can select either the Variable Bit Rate
(VBR) or Constant Bit Rate (CBR) system for
MPEG4 stream.
When the VBR system is selected, the bit rate
varies according to the condition of the input video
signals. The VBR system delivers a stable picture
quality, but forecast of the bit rate is difficult.
When the CBR system is selected, encoding is
performed at a fixed bit rate regardless of the
condition of the input video signals. The picture
quality varies under the CBR system, but the bit
rate can be easily forecast.
You can specify an estimated bit rate for both
VBR and CBR. (64 kbps - 8000 kbps)

Bit Rate of Audio (VN-V26U only)

Up to 2 audio data streams can be sent by VN­V26U.
Only 1 audio data stream can be recieved. Data
volume for 1 audio stream is 64 kbps. Audio data
volume may be calculated using the following
formula.
64 kbps x no. of streams
The number of streams is the total number of
streams sent via TCP (number of clients), streams
sent via multicast, and stream received by
VN-V26U
(Example)
When
receives 1 audio stream, data volume will be as
follows.
64 kbps x 3 = 192 kbps

.

VN-V26U

sends out 2 audio streams and

24

Restrictions on the Number of
Distributions for VN-V25U/26U

The maximum number of distributions for
VN-V25U/26U is determined by the settings as
well as requirements from the client.

When only JPEG images are distributed, the
maximum number of distributions is determined
based on the highest bit rate within the stream.
When a distribution request that exceeds the
maximum number of distributions is received,
this request is denied. For example, if Client A
requests for and receives data at 1 Mbps, while
Client B requests for and receives data at
5 Mbps, the maximum number of distributions is
4 streams according to the table below.

Maximum number of distributions when only
JPEG data is distributed

Distribution

at maximum

bit rate

1 Mbps and
below

5 Mbps and
below

10 Mbps and
below

Larger than
10 Mbps

When only MPEG4 images are distributed, the
maximum number of distributions is determined
by the preset bit rate. When a distribution
request that exceeds the maximum number of
distributions is received, this request is denied.

When distributing only MPEG4 data

Preset bit

rate

0.6 Mbps
and below

3 Mbps and
below

6 Mbps and
below

Larger than
6 Mbps

Maximum

number of

distributions

20 20 Mbps

4 20 Mbps

2 20 Mbps

1 Maximum

Maximum

number of

distributions

20 12 Mbps

4 12 Mbps

2 12 Mbps

1 Maximum

Total

maximum bit

rate

configurable
value
(24 Mbps)

Total

maximum bit

rate

configurable
value (8
Mbps)

When both JPEG and MPEG4 images are
distributed simultaneously, distribution up to two
clients for JPEG and MPEG4 respectively is
possible. However, distribution requests that
exceed a total bit rate of 20 Mbps will be denied.

Total bit

rate

20 Mbps and
below

Maximum

number of

distributions

for JPEG

22

Maximum

number of

distributions

for MPEG4

Insufficient network bandwidth

When there is insufficient bandwidth, the
number of JPEG frames (frame rate) that the
client can acquire will decrease. Delay will also
occur in the distribution of images. In the case of
MPEG4, noise interference may occur and
playback may fail.
There may be a longer delay or interruption in
the audio.

Network Delay

When the client acquires JPEG via TCP,
VN-V25U/26U will send out data while checking
the ACK from the client at the same time. For
networks with considerable delay, data cannot
be sent out until ACK is received, and therefore
the frame rate will drop. In the case of MPEG4,
noise interference may occur and playback may
fail.
Audio may be interrupted.
Decrease in the frame rate due to network delays
can be eliminated by receiving data via multicast.

Network Jitter

When there is considerable network jitter, delay
time may be prolonged and the image frame rate
may drop. In the case of MPEG4, noise
interference may occur and playback may fail.
Audio may be interrupted.

Packet Loss

When acquiring images from VN-V25U/26U via
TCP, packet loss may be recovered by TCP
transmission. When there is considerable delay
in the network, however, missing data may occur
and the image frame rate may drop. In the case
of MPEG4, noise interference may occur and
playback may fail.
Audio may be interrupted.
When packet loss occurs during multicast
sending from VN-V25U/26U, the image frame
rate may drop. In the case of MPEG4, noise
interference may occur and playback may fail.
Audio may be interrupted.

25

Connection / Installation

Network Requirements
(continued)

List of Protocols and Port Numbers
Used by VN-V25U/26U

VN-V25U/26U uses the protocols and port
numbers listed below. Ensure that these ports
are allowed through the firewall when a firewall
is to be installed.

Protocol/Port No. Purpose of Use

Source

TCP/80 JPEG/MPEG4

TCP/10020
TCP/10021
TCP/10023

TCP/32040 Alarm server

Destination

TCP/20, 21 FTP

TCP/25 Mail delivery

TCP/110 POP (Mail Delivery)

TCP/User Setting No. Sending alarm

UDP/123 SNTP

UDP/User Setting No. Sending alarm

acquisition, Web
Settings page, API,
Sending/Receiving
audio (VN-V26U
only)

(Reserved for
adjustment)

26

Network Settings

IP Address Settings

Setting the IP address for VN-V25U/26U

There are two methods to set the IP address for
VN-V25U/26U as follows.

(A) Assigning an IP address to VN-V25U/26U

from the DHCP server

(B) Assigning a static IP address to VN-V25U/

26U

䡵 (A) Assigning an IP address from the

DHCP server

● VN-V25U/26U is set to ADHCP EnableB (the

DHCP client feature is on) by default. To
assign an IP address from the DHCP server,
connect VN-V25U/26U to LAN with DHCP
server, and turn on VN-V25U/26U. Allowing
the DHCP server to assign the same IP
address to VN-V25U/26U every time eases
access to VN-V25U/26U.

● For details on IP addresses assigned to

VN-V25U/26U, consult your network
administrator.
You can look up the IP address of VN-V25U/
26U using the search tool in the supplied
CD-ROM.
For details, please refer to AReadmeB file in
the CD-ROM.

Caution:

● Set the DHCP server such that the same IP

address is always assigned to the MAC
address of VN-V25U/26U by the DHCP
server. Connection may fail if the above
setting is not performed.

䡵 (B) Assigning a static IP address

䢇 System configuration required for setting

IP address

The default setting for VN-V25U/26U is ADHCP
EnableB (DHCP client feature is turned on).
Upon starting up in LAN without DHCP server,
VN-V25U/26U starts running with the following
IP address after time out of DHCP.

IP address : 192.168.0.2

Subnet mask : 255.255.255.0

Default gateway : Nil

Note:

● To set a static IP address for VN-V25U/26U,

connect VN-V25U/26U, the switching hub
and the computer for setting using a straight
LAN cable of Category 5 and above.

䢇 Set up the computer for setting the IP

address.

● Minimum computer specifications for

setting

OS : Windows XP (Professional or

Home Edition) (SP2)

Web browser : Internet Explorer

Version 6.0

Caution:

● When setting the IP address for VN-V25U/

26U, do so by using a network that is made
up only of VN-V25U/26U, the computer for
setting and the switching hub.

● Using a hub connected to other network

devices or networks via a LAN cable for
setting can cause problems.

27

Network Settings

D

IP Address Settings
(continued)

䢇 IP address setting at the computer

Set the computer to an IP address that enables communication with VN-V25U/26U.

1.Click [Start]

● Select in the sequence of [Control Panel]-[Network Connection]-[Local Area].

2.The computer on which Internet Explorer is launched automatically selects the connected

network

● Right-click and select [Properties].

● Check to ensure that the [Client for Microsoft Networks] and [Internet Protocol(TCP/IP)] check

boxes are selected.

3.Select [Internet Protocol(TCP/IP)] and click [Properties]

4.Set the IP address

Select [Use the following IP address].

A

Specify the [IP address]. (For example,

B

use 192.168.0.100 when VN-V25U/
26U is in its default settings and there
is no DHCP server)

Note:

Make sure that you take note of the
original IP address before altering.

Caution:

Ensure that a duplicate IP address is
not specified within the same network
environment.

C

Set [Subnet Mask] to a value that is
appropriate for the setting operation.
Consult the network administrator if
you have any queries.
(Use 255.255.255.0 when VN-V25U/
26U is in its default settings and there
is no DHCP server)

When a [Default Gateway] is present,
make use of the corresponding IP
address (e.g., 192.168.0.254).

E

Click [OK].

5.Click [OK] on the ALocal Area Connection PropertiesB screen

28

䢇 Changing the IP address using the Internet Explorer

1.Launch the Internet Explorer on the computer

2.When proxy settings are enabled in the Internet Explorer, follow the steps below to disable

the proxy of the Internet Explorer

● Select in the order of [Tool]-[Internet Options]-[Connections]-[LAN Setting], followed by

deselecting the check for [Use a proxy server for your LAN] under [Proxy Server] of the [Local
Area Network (LAN) Settings] window.

Deselect the check

3.

If the active script of the Internet Explorer is disabled, follow the steps below to enable it

● Select [Trusted sites] under [Tool]-[Internet Options]-[Security]. Upon doing so, the [Sites…]

button directly below becomes active. Click this button and deselect the check in the displayed
window, and add the following web site to the zone.

http://192.168.0.2

● Next, select [Trusted sites] under [Tool]-[Internet Options]-[Security], and press the [Custom
Level] button. Select [Enable] under [Scripting]-[Alarm] of the [Security Settings] window that
has been opened.

Select [Enable]

29

Network Settings

IP Address Settings
(continued)

䢇 Changing the IP address using the Internet Explorer (continued)

4.Launch the Internet Explorer

Enter the following IP address into the address field.

A

http://192.168.0.2

Click [Go].

B

Note:

● If the proxy server settings for access to the Internet via the Internet Explorer is enabled, you may

not be able to specify the IP address directly. In this case, change the proxy settings of the Internet
Explorer.

● After the [Security Settings] screen appears, press the [OK] button to proceed.

5.Enter the user name and password (login as administrator)

Enter the user name.

A

VN-V25

This is set to AadminB by default.

B

Enter the password.
This is set to Avn-v2xB by default.

30

C

Click [OK].