Pravis 4CH Compact Case, 4CH with DVD±RW, 8 ch, 16CH with DVD±RW, 16 ch User Manual

1 | H.264 Digital Video Recorder

Safety Informatio n

The safety information is provided for the wellness of the equipment and for the safety of the
operator.
Please review and observe all instructions and warnings in this manual.

Preparations before installation

T o protect your DVR from damage and to optimize performance, be sure to keep the DVR away from dust, humidity, and area
with high voltage equipment such as refrigerator.

Do not install or place equipment in areas where the air vents can be obstructed, such as in tight enclosures or small utility
closet. Keeping the unit in a temperature-controlled room with ample regulated power is highly recommended. Do not
overload the wall outlet, as this can result in the risk of fire or electric shock.

Uninterruptible power devices such as UPS power surge protectors are recommended, and the DVR units must at least be
connected with UL, CUL, or CSA approved power surge protector. Avoid direct sun light and avoid heat.

FCC Information

This equipment has been tested and found to comply with the limits of 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 radiates 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. Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment under FCC rules.

UL Information

- for pluggable equipment, the socket-outlet shall be installed near the equipment and shall be easily accessible

- if the battery is placed elsewhere in the equipment, there shall be a marking close to the battery or statement in the servicing
instructions.

C

AUTION RISK OF EXPLOSION IF AN INCORRECT TYPE REPLACES BATTERY.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTION.
THIS EQUIPMENT IS FOR INDOOR USE, AND ALL THE COMMUNICATION WIRING IS LIMITED TO

INSIDE OF THE BUILDING, OR ANY SIMILAR WORD.

Note : Keep this manual handy every time you operate this equipment. Also, check with your dealer

for further assistance and for the latest revision of this manual. Your dealer might provide you with a
digital version of this manual. We also ask to keep the original box and packing materials in case of

return and for long-term storage of the DVR unit.

User’s Manual | 2

Contents

CHAPTER 1 : DVR USER MANUAL

1 GETTING STARTED 6

1.1 Checking Supplied Items 6

1.2 Connecting Peripheral Device 7

1.3 System Startup and Shutdown 8

2 EXPLANATION FOR EACH FUNCTION 10

2.1 Front Panel 10

2.2 Rear Panel 14

2.3 IR Remote Control l er 17

3 OPERATION 18

3.1 User Log-in 18

3.2 Live Display Mode 19

3.3 PTZ Operation 23

3.4 Freeze Mode 25

3.5 Call Monitor Operation 26

3.6 Playback of Recorded Video 27

3.7 Clean Button during Pla yback 28

3.8 Quick Backup during Playback 29

3.9 Search Recording Image 31

3.10 DST Setting and Screen Saver 36

4 SETTING 38

4.1 System 39

4.2 Device 46

4.3 Record 51

4.4 Network 57

4.5 Backup 61

4.6 Quick Setup 63

5 WEB SURVEILLANCE 64

5.1 Web Login 64

5.2 Web Configuration 64

5.3 Web m oni t or i ng 67

5.4 Web Playback 69

3 | H.264 Digital Video Recorder

CHAPTER 2 : ACS CLIENT SOFTWARE USER MANUAL

6 ACS USER GUIDE 72

6.1 System Requirement 72

6.2 Install 72

6.3 Uninstall 75

6.4 Basic Operation 76

6.5 Advanced Operation 82

6.6 ACS Setup 85

CHAPTER 3 : MAC ACS CLIENT SOFTWARE USER MANUAL

7 MAC ACS USER GUIDE 92

7.1 System Requirement 92

7.2 Install 92

7.3 Basic Operation 94

CHAPTER 4 : MOBILE PHONE SOFTWARE USER MANUAL

8 MOBILE PHONE SOFTWARE USER GUIDE 104

8.1 iPhone application software 104

8.2 Android application software 108

8.3 BlackBerry application software 113

8.4 Using WAP+3G Connection 118

APPENDIX : DYNDNS SITE REGISTRATION 120

APPENDIX : SPECIFICATION 123

User’s Manual | 4

Chapter 1

DVR USER MANUAL

5 | Chapter 1 : DVR User Manual

User’s Manual | 6

1 GETTING STARTED

1.1 Checking Supplied Items

Make sure that you have the following items supplied with your DVR. If any of these items are missing or damaged, notify your
vendor immediately. Keep the packing utilities for moving or storage purposes afterwards.

Items

Photo

Quantity

User Manual
(DVR & Software)

Quick Start Guide

1 Set
1 Set

CD (Manual & Software)
and Rubber Mount

1 Set
1 Set (4 Pieces)

12V DC Adaptor
and Power Cable

1 Set

IR Remote Controller

1 Set

USB Mouse

1 Set

7 | Chapter 1 : DVR User Manual

1.2 Connecting Peripheral D evi c e

This section describes how to connect peripheral devices efficiently to the DVR.
Install the DVR on flat surface. If required, attach a rubber mount for installation. If a 19-inch rack is used with 1.5U Height

case, it is recommend to install the system on a shelf and use 2.5~3U (1U=1.75 inch or 4.45 cm) space for proper ventilation.

[4CH Compact Case (W)270x(H)71x(D)215mm]

[4/8/16CH with DVD±RW (W)360x(H)66x(D)380mm]

NOTE

Install the system in a location with good ventil at i on to prevent overheating.

W

ARNING

!

※When connecting power cord to the system, it is strongly recommended first to plug the power cord to

the system and then plug the other side of power cord into the wall AC socket.

User’s Manual | 8

1.3 System Startup and Shutdown

1.3.1 System Startup

After connecting peripheral devices such as cameras, monitors, and a mouse to the DVR, power up the DVR by connecting
DC12V 6.67A adaptor to the power jack on the rear panel. The boot log will display as shown below. Please wait until the boot
process completes.

Login with ‘User Name’ at the login screen, which will appear as shown below.
There is only one Administrator Account configurable in the DVR system. It is assigned with an unchangeable User ID marked

as ‘admin’. The default password is empty (No Password). Administrator account has full access to the DVR and its
configurable parameters. The Administrator Account also has the ability to create new users and to assign rights to the new
user accounts. Those new users created by ‘admin’ account can also login with a specific password set by ‘admin’ account.

N

OTE Do not forget the administrator’s password that was set for the first time. In case the password is lost,

contact your vendor.

N

OTE The mouse is included. In case you need to replace it, it is highly recommended to choose well-known

major brands such as DELL, MICROSOFT, LOGITECH, or SAMSUNG.

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1.3.2 `System Shutdown and change password

Unplug the power cable from the back of the unit to power off the DVR.
The default password for ‘admin’ account is none. Therefore, just click ‘Enter’ button on the dial pad. If you changed the

password for ‘admin’ account, please type in the changed password to login.

N

OTE User can type in the password using the virtual keyboard or the numeric buttons on the IR remote

controller.

User’s Manual | 10

2 EXPLANATION FOR EACH FUNCTION

2.1 Front Panel

[4CH Compact Case (W)270x(H)71x(D)215mm]

No.

Buttons

Functions

1

Menu
Exit

Open system menu /
Return to previous mode

2 Fast Rewind Button

Forward Playback : Decrease the speed /

Reverse Playback : Increase the speed

3

Forward & Backward Play /

Pause Button

Forward play & Backward Play (Long Press) /

Pause (Short Press)

4 Fast Forward Button

Forward Playback : Increase the speed /

Reverse Playback : Decrease the speed

5

Search
Instant Play (Press and hold)

Go to search mode /
Used to initiate Instant Reverse Playback

6

Book-Mark

Call Monitor (Press and hold)

Book-Mark /

Used to display full screen video of a selected spot out channel

7

PTZ

I-backup (Press and hold)

Bring up PTZ Camera control /

Used to initiate instant back up

8

Mode

Freeze(Press and hold)

Change screen mode /

Used to initiate Freeze function

9 USB Port

USB port (Ver. 2.0) for mouse operation and backup device or
F/W update

10 LED Indicator

Indicates sy stem status

Power, Record, HDD and Remote Control

11

Instant Record

Emergency Recording

12

Enter Button

Select value or setting

13 Direction Button Move to the direction that user wants to select

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[4/8/16CH with DVD±RW (W)360x(H)66x(D)380mm]

No.

Buttons

Functions

1

Menu
Exit

Open system menu /
Return to previous mode

2 Fast Rewind Button

Forward Playback : Decrease the speed /

Reverse Playback : Increas e the speed

3

Forward & Backward Play /

Pause Button

Forward play & Backward Play (Long Press) /

Pause (Short Press)

4 Fast Forward Button

Forward Playback : Increase the speed /

Reverse Playback : Decrease the speed

5

Search
Instant Play (Press and hold)

Go to search mode /
Used to initiate Instant Reverse Playback

6

Book-Mark

Call Monitor (Press and hold)

Book-Mark /

Used to display full screen video of a selected spot out channel

7

PTZ

I-backup (Press and hold)

Bring up PTZ Camera control /

Used to initiate instant back up

8

Mode

Freeze(Press and hold)

Change screen mode /

Used to initiate Freeze function

9 USB Port

USB port (Ver. 2.0) for mouse operation and backup device or F/W
update

10 LED Indicator

Indicates sy stem status

Power, Record, HDD and Remote Control

11

Instant Record

Emergency Recording

12

Enter Button

Select value or setting

13 Direction Button Move to the direction that user wants to select

14

DVD±RW

DVD±RW : Open to use a pre-installed DVD±RW(Option)

N

OTE

I- Backup (Instant Backup)

In playback mode, the user can press the “I-backup” button on the frontal keypad to configure both “start” and
“End” time. Once the “Start” and “End” time is set, click the “Start” button to start the backup process.

User’s Manual | 12

2.1.1 DIRECTION Button

1) Live Display & Playback Mode
User can change channel number by using Left & Right arrow button.
User can change display mode by using Up & Down arrow button.

2) Menu Mode (when system menu displays)

To move to desired menu position

3) Pan & Tilt Mode (once PTZ Button is pressed)

T o move connected camera to desired direction

4) Zoom & Focus Mode (when PTZ Button is pressed again)

User can control Zoom-In & Out by using Up & Down arrow button.
User can control Focus-In & Out by using Left & Right arrow button.

5) CALL Monitor Mode (once Call Monitor is pressed)

User can bring up the full screen out of spot out channels by using Up & Down arrow button.

2.1.2 ENTER Button

T o select value or setting

2.1.3 EXIT Button

To exit the menu setup or return to previous mode

2.1.4 MENU Button

To set the system configuration according to user requirement

2.1.5 MODE (Press once) / FREEZE (Press and hold) Button

MODE (Press once): to select the Screen display mode
FREEZE (Press and hold): Screen display will be paused until the Freeze button is pressed again.

2.1.6 PTZ (Press Once) / I-BACK UP (Press and hold) Button

PTZ (Press once): Once pressed, DVR is changed to Pan & Tilt mode. User can control Pan & Tilt operation by using
Direction Button. If pressed again, DVR is changed to Zoom & Focus mode. User can control Zoom & Focus operation by
using Direction Button.

I-BACK U P (Press and hold): Press and hold to go to instant Back up mode.

2.1.7 INSTANT REC (Press once)

INSTANT REC (Press once): Used for emergency recording mode.

2.1.8 B-MARK (Press once) / CALL MON (Press and hold) button

Book-MARK (Press once): Used for bookmark.

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CALL Monitor (Press and hold to enable): Used to display a full screen video of a selected channel out of the assigned spot
out channels. During CALL Monitor mode, if you click “CLOSE” button at the bottom of the numeric panel, the spot out display
will go back to the previously programmed spot out mode.(CALL Monitor)

2.1.9 SEARCH (Press once) / INSTANT PLAY (Press and hold)

SEARCH (Press once): To search the recorded Video by time and date
INST ANT PL AY (Press and hold): Used to initiate Instant Reverse Playback. Refer to “Operation > Search recording Image”

for detailed image searching method.

2.1.10 IR Sensor Window (Remote Control Receiver)

To receive input signal from the IR remote control

2.1.11 DVD±RW

Open to use a pre-installed DVD±RW (Option)

User’s Manual | 14

2.2 Rear Panel

[4CH Compact Case (W)270x(H)71x(D)215mm]

[4/8/16CH with DVD±RW (W)360x(H)66x(D)380mm]

4 BNC ports available on 4CH model and 8 BNC ports available on 8CH model

No.

Name

Description

1

Video-In

Camera (Supports NTSC/PAL)

2

Audio-In

Audio input device (with amplifier)

3

Audio-Out

Audio output device (with amplifier)

4 Video-Out Composite Monitor

5

Spot-Out

Comp osite S pot Monitor

6

RS-232 Port

RS-232 input device

7

USB Port

USB port (Ver 2.0) for mouse operation and backup Device or firmware update

8 VGA Port VGA Monitor

9

LAN Port

10/100 Ethernet connection terminal

10

Power Input

Power supply connection (Default : 12 V, 3.33A/6.67A)

11

Sensor Input

Sensor input

12 Alarm Output Alarm output

13

RS-485 Port

PTZ camera or external keyboard

14

Loop Out

Loop Out Port

15

MIC-In

MIC input device

16 HDMI Port HDMI Port Out

N

OTE Carefully check whether the specification of the peripheral devices matches the DVR’s specification.

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2.2.1 Video-In

To connect the camera input to the corresponding channel marked on rear panel.

2.2.2 Audio-In

To connect audio input

2.2.3 Audio-Out

To connect audio output

2.2.4 Video-Out

To connect composite monitor

2.2.5 Spot-Out

The spot monitor can be used to display input images in automatic switching mode.

2.2.6 VGA-Out

To connect a VGA Monitor

2.2.7 HDMI-Out

To connect a HDMI Port Monitor

2.2.8 USB Port (Version 2.0)

1) T o backup recorded Video by using USB storage device (USB Memory Stick or USB HDD)

2) Firmware upgrade

3) To connect a mouse for system navigation

2.2.9 LAN Port

To connect RJ-45 jack of LAN cable
Consult network administrator or the internet service provider for proper network setting.

2.2.10 NTSC / PAL Selection

NTSC/ PAL is automatically selected when the system boots up.
*Please connect cameras to DVR prior to booting up.

2.2.11 RS-485 Terminal Block

Connect RS-485 cable for the control of PTZ camera or external keyboard controller

N

OTE Camera Input voltage level is 1Vp-p±10%.

N

OTE Use of audio output with an amplifier is recommended

User’s Manual | 16

2.2.12 Sensor Terminal Block

Connect sensors

2.2.13 Alarm Terminal Block

Connect various alarm devices controlled by relay output

2.2.14 Power Input

Before connecting the power cord to the system, check if the power is in accordance with the system specification.

N

OTE Support both N/O (Normal Open) and N/C (Normal Close) type of sensors. If connected sensor is not

functioning, ensure wiring is correct. The connection method may differ according to the type of P/T/Z

controller. Enquire to your vendor for guidance.

17 | Chapter 1 : DVR User Manual

2.3 IR Remote Controller

In order to use IR Remote Controller, the ID of the IR Remote Controller must be same as the ID of the DVR.
(Default ID # for DVR and IR Remote Controller is “1”.)
If you have more than two DVRs, you are able to control them individually with just one remote controller by setting up

‘Remote ID’. (The Remote ID is adjustable from ‘1’ up to ‘8’.)

The function buttons of the IR Remote Controller are as below.

No.

Functions

1 Instant (Emergency) Recording Button

2

Numeric Button

3

Auto-Sequence Button on Live Display Mode

4

Freeze Button

5 Call Monitor Button

6

Channel Selection Button

7

Instant (Emergency) Playback Button

8

Search Button

9 OK (Select) Button

10

Audio Mute Button

11

Playback Button on Search Mode

(Fast Backward/Playback/Stop/Fast Forward)

12

Exit Button

13 Display Mode Button

14

Zoom Button

15

PIP Mode Button

16

Bookmark Button

17 Zoom In & Out Button / Volume(+ & -) Button

18

Backup Button

19

PTZ Button

20

Direction Button (Up/Down/Right/Left)

21 Menu Button

22

ID Select Button (DVR1 ~ DVR8)

User’s Manual | 18

3 OPERATION

3.1 User Log-in

Check the power connection. The system can be used after power-on.
The DVR has various setting categories. The administrator can set the system password and <User> to prevent unauthorized

changes to setting values and alteration of recorded file.

Enter the <Admin> or <User> password which had been set by using the virtual keyboard.

N

OTE 1) <LOGIN> window will be permanently displayed in monitor as above picture until user logs in with the

right ID and password.

2) If it is set as Auto Log-In, DVR does not require LOG-IN. (Please refer to 4.1.2 User.)

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3.2 Live Display Mode

3.2.1 Channel Selection

Real-time live image can be seen by easy button operation after power-on.
The images can be seen on real-time by 1, 4, 9, 16 and PIP screen. Whenever the up/down arrow button on the front panel or

IR remote controller is pressed, the screen will be sequentially changed.

[1 Ch] [4 Ch]

[9 Ch] [16 Ch]

[PIP Mode]

T o select channel by mouse, click the left mouse button on the desired channel. To return to previous screen mode, click the
left mouse button again.

N

OTE To properly select a channel using the mouse, the user is required to perform a slow and clear click of the

left mouse button.

User’s Manual | 20

3.2.2 Icons

The live mode display’s icons or messages will be indicated on the screen to indicate the system mode or status.
Below are the icon categories that are indicated on the monitor.

Icon to be shown

at right-upper corner on each channel screen

Icon to be shown

at right-bottom corner on full screen.

Continuous Recording

PTZ Camera

Motion Detection Recording

No HDD, Smart Alarm & HDD Failure

Sensor Activating Recording

Using Emergency Recording

Continuous+ Motion Recording

Using PTZ

Continuous + Sensor Activating

Recording

Warning for exceeding temperature

Motion Detection + Sensor Activating

Recording

Showing sequence mode

Continuous + Motion Recording + Sensor

Activating Recording

Showing digital zoom mode

Emergency Recording

Sensor Activated

Motion Detected

Audio Channel

User can place a USB Mouse pointer on the bottom of the monitor during live mode. The menu bar will instantly appear as
shown below.

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Red Circle icon button means “instant (emergency) recording”, which is useful to urgently start recording. In
emergency recording, the system follows the panic record settings. The default settings for panic record is 30(25)FPS @CIF
Resolution for all channels. If you want to change the panic record settings for each channel, please go to RECORD  Panic
Record.

Joystick icon button means “PTZ” mode, which is useful to instantly switch to PTZ control. In PTZ mode, user can
move pan/tilt and zoom-in/out by moving the mouse pointer, like a v irtual joystick.

User can click the right-forwarded arrow button to automatically playback the latest video clip.

Circle icon button means the HDD usage percentage by video recording. If it shows 60%, then 60% of HDD space
has been used up for recording.

NOTE If you cannot find any colored-mark in the top right corner of the live screen mode, then it means that the

system does not record any image. In this case, you need to check recording schedule or camera of the

main setup menu.

3.2.3 Pop-up Menu

User can click the right button of the mouse to pop up sub-menu as shown below .

When “SEQUENCE” is selected, icon is shown on the bottom right corner of the screen, and display screen will
be sequentially changed.

When “ZOOM” is selected on full screen mode, digital zoom function is activated, and icon is shown on the
bottom right corner of the screen. In zoom pop-up menu, the user can move a yellow box by using the mouse to drag in the
desired area of the camera to zoom. In order to go back to live display mode, please click “Zoom” again.

User’s Manual | 22

When a camera is disconnected, a warning sound may be generated depending on the system settings.

Admin user can set different level of authorization for each user. If a certain user is not allowed to view a certain live and
playback channel, then no image appears on the display screen as shown above.

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3.3 PTZ Operation

User can go to PTZ mode by clicking right button of mouse and selecting “PTZ” in the pop-up menu as shown below or by
selecting the joystick button in the menu bar located on the bottom of the main screen.

In PTZ mode, user can control PTZ operation with USB mouse.
While pressing the left button of mouse, user can drag the mouse pointer to up/down or left/right to move pan/tilt position of

the camera. If user moves the mouse pointer far away from the center position of the main screen, the PTZ camera moves at
faster speed. The user can also zoom-in/out by rolling the wheel of mouse up or down.

NOTE

Full PTZ functions are available by using USB mouse, IR remote control, or keyboard controller

User’s Manual | 24

For focus control in PTZ screen mode, the user can right-click using the mouse to get the pop-up menu as shown below.
Default mode is to “ZOOM”. The user can select “FOCUS” to switch the wheel function of mouse from zoom-in/out to focus.
This will change the default behavior of the mouse wheel.

The user can also select the preset button or exit PTZ screen model.

N

OTE User will see numeric pad to select “Preset” number. The preset is defined by setting a PTZ protocol in the

setting menu. The maximum number of preset is 255, but the max supported by the PTZ may be less

User can automatically switch PTZ camera positions according to the defined of preset setting by using GUARD TOUR
function. The connected PTZ camera must support touring functions. “GUARD TOUR” on the pop-up menu can be enabled
after the channel that the PTZ camera is connected to is changed to full screen. Please make sure that PTZ camera setting is
correct, otherwise, “GUARD TOUR” is shown as disabled.

C

AUTION Depending on PTZ camera, some preset positions might be skipped if, for example, the PTZ camera

cannot mechanically move or control focus within the interval time required by the DVR. In this case, it
is recommended to increase the interval setting to a value that allows for the cameras to finish its Pan

& Tilt.

25 | Chapter 1 : DVR User Manual

3.4 Freeze Mode

Press FREEZE button on the front panel, or click the right button on the mouse and select the Freeze mode while viewing a
live image. In the Freeze mode, the image pauses; the date/ time information does not; and the system clock continues
running. Press FREEZE to pause the live view. To resume the live view, press FREEZE again, or click the right button on the
mouse and select the FREEZE again.

User’s Manual | 26

3.5 Call Monitor Operation

Press the CALL MON button on the front panel, or click the right button on the mouse and select the CALL MONITOR in order
to enter call monitor control mode. The numeric panel will pop up at the center of the screen.

Click the specific channel button on the numeric panel to display full screen mode out of assigned spot out channels.
▪ Press the close button on the bottom of the numeric panel. It will go back to the previously programmed spot monitor mode.

27 | Chapter 1 : DVR User Manual

3.6 Playback of Recorded Video

T o play a recorded image, press the Play button from the Front Panel or IR Remote Controller.
It is easy to use the USB mouse to playback recording files. The recorded files can be seen backwards or forwards. Press the

rewind and fast-forward buttons, and the playback speed can be controlled in steps of 2, 4, 8, 16, 32 times real time when
playing backwards or forwards.

User can click the right-forwarded arrow button to automatically play the latest video clip.

The picture below shows the system playing back a video.
In playback screen, user can make various playback modes, make an instant manual backup (archive), go to calendar search

mode, change channel, and change screen modes. By clicking the left mouse button in the colored-time bar, the user can
jump to a different time in the recording. In addition, user can move the vertical search bar and release by dragging it back and
forth to search the desired time in detail.

User’s Manual | 28

3.7 Clean Button during Playback

De-interlacing feature is required for smooth playback of video that is recorded by 720x480/576 (D1) resolution.
In playback mode, user can press “CLEAN” icon at the menu bar located in the bottom of the main screen, or user can click

the right button on the mouse and select “ De-interlace ”. After pressing “CLEAN” icon, a blue circle forms around the icon,
which means de-interlacing is activated. After changing to de-interlacing mode, press the pause and step forward icon. User
can get better image as shown below. Pressing “CLEAN” icon again, this function will be inactivated.

Click CLEAN icon Enable. Click CLEAN icon Disable.

The picture comparison below shows the difference between “Interlace” video and a “De-interlace” video clip.

N

OTE De-interlacing feature by pressing the “CLEAN” icon can be activated only during a full screen mode.

[ De-interlace Image]

[ Interlace Image ]

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3.8 Quick Backup during Playback

User can easily archive video while viewing the video playback.
In playback mode, user can press and hold “I.BACKUP” button on the front panel to set archive “start time”. After pressing this

“I.BACKUP” button, user will see “INST AN T BACKU P START” on the bottom right of the playback monitor. Once “INSTANT
BACKUP START” message is shown, user can keep playing back video until user wants to finish archiving and then press
and hold the same “I.BACKUP” button again to set backup “end time”. The backup menu window will pop up, and user can
select the backup media, like CD/DVD or USB thumb drive and execute archiving.

Press “I.BACKUP” button to set “start” and “end” time
of archive during video playback.