Dual XDVD251BT Operating instructions

INSTALLATION/OWNER’S MANUAL
Multimedia Receiver with Bluetooth®
featuring a 6.2" Touch Screen Display
;'9'%7
The DVD video display of the in-dash unit will not operate while the vehicle is moving. This is a safety feature
to prevent driver distraction. In-dash DVD video functions will only operate when vehicle is in Park and the
parking brake is engaged. It is illegal in most states for the driver to view video while the vehicle is in motion.
Safety Notes:
XDVD251BT

2
Upon installation of this Monitor/DVD player (“unit”) into a vehicle, the driver of the vehicle
must not operate this unit by watching videos or playing video games while driving.
Failure to follow this instruction could lead to driver distraction which could result in
serious injury or death to the vehicle’s occupants or persons outside the vehicle and/or
property damage.
Several states prohibit the installation of monitors/DVD players if the screen is visible from
the driver’s seat. If you reside in a jurisdiction which has enacted such a law, this unit
must not be installed so that the screen is visible from the driver’s seat. When installing
this unit in the front console/dashboard, the unit must be positioned so that it is facing the
front passenger seat only. Failure to follow this instruction could lead to driver distraction
which could result in serious injury or death to the vehicle’s occupants or persons outside
the vehicle and/or property damage.
This unit is designed so that it may be operated only when the vehicle is in “Park” and the
parking brake is fully engaged. To this end, this unit includes a parking brake lock-out
feature which prohibits the unit from operating if the vehicle is not in “Park” and/or the
parking brake is not fully engaged. When installing this unit, the installer must connect
the parking brake detect wire to the parking brake mechanism in order to make the
parking brake lock-out feature operable. DO NOT simply ground the parking brake detect
wire to a metal portion of the vehicle. Failure to properly install the parking brake lock-
out feature could lead to driver distraction which could result in serious injury or death to
the driver’s occupants or persons outside the vehicle and/or property damage.
Once the parking brake lock-out feature is installed, the owner/user must not attempt to
disrupt/neutralize the parking brake lock-out feature by (a) partially engaging the parking
brake and/or (b) purchasing/using any device or unit designed to send necessary brake
signals to the unit. Failure to follow these instructions could lead to driver distraction
which could result in serious injury or death to the driver’s occupants or persons outside
the vehicle and/or property damage.
When operating this unit, keep the unit’s volume level low enough so that the vehicle’s
occupants can hear traffic-related sounds such as police and emergency vehicles.
Failure to follow this instruction could lead to driver distraction which could result in
serious injury or death to the vehicle’s occupants or persons outside the vehicle and/or
property damage.
WARNING
;'9'%7 PREPARATION

3
;'9'%7 OPERATION
Safety Information
Please read all instructions carefully before attempting to install or operate.
Due to its technical nature, it is highly recommended that your DUAL ;'9'%7 is installed by a professional
installer or an authorized dealer. This product is only for use in vehicles with 12VDC negative ground only.
To prevent damage or injury:
• Make sure to ground the unit securely to the vehicle chassis ground.
• Do not remove the top or bottom covers of the unit.
• Do not install the unit in a spot exposed to direct sunlight or excessive heat or the possibility of water splashing.
• Do not subject the unit to excessive shock.
• When replacing a fuse, only use a new one with the prescribed rating. Using a fuse with the wrong rating may
cause the unit to malfunction.
• To prevent short circuits when replacing a fuse, disconnect the wiring harness first.
• Use only the provided hardware and wire harness.
• You cannot view video while the vehicle is moving. Find a safe place to park and engage the parking brake.
• If you experience problems during installation, consult your nearest DUAL dealer.
• If the unit malfunctions, reset the unit as described on page 10 first. If the problem still persists, consult your
nearest DUAL dealer or call tech assistance @ 1-866-382-5476.
• To clean the monitor, wipe only with a dry silicone cloth or soft cloth. Do not use a stiff cloth, or volatile solvents
such as paint thinner and alcohol. They can scratch the surface of the panel and/or remove the printing.
• When the temperature of the unit falls (as in winter), the liquid crystal inside the screen will become darker than
usual. Normal brightness will return after using the monitor for a while.
• When extending the ignition, battery or ground cables, make sure to use automotive-grade cables or other cables
with an area of 0.75mm (AWG 18) or more to prevent voltage drops.
• Do not touch the liquid crystal fluid if the LCD is damaged or broken. The liquid crystal fluid may be hazardous
to your health or fatal. If the liquid crystal fluid from the LCD contacts your body or clothing, wash it off with soap
immediately.
FCC Compliance
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.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

4
Before You Start
•Disconnect negative battery terminal. Consult a qualified technician for instructions.
•Avoid installing the unit where it would be subject to high temperatures, such as from direct sunlight, or where it
would be subject to dust, dirt or excessive vibration.
Getting Started
;'9'%7 INSTALLATION
Preparation
Decorative Ring
Head Unit
Screw (Taptite
Truss Head)
5x6mm
Screw (Taptite
Binding Head) 5x6mm
TYPICAL FRONT-LOAD MOUNTING METHOD
• Connect wiring harness as shown on page 6. Consult a qualified technician if you are unsure.
•Certain vehicles may require an installation kit and/or wiring harness adapter (sold separately).
• Reconnect negative battery terminal, and test for correct operation.
•Snap trim ring into place (if required).

5
Wiring Diagram - Inputs/Outputs
;'9'%7 INSTALLATION
Note:
When replacing a fuse, make sure to use the correct type and amperage. Using an incorrect fuse could cause
damage. The unit uses (1) 10 amp ATC mini style fuse located on the power connector.
Wiring Notes:
Rear camera input
A rear view camera (not included) can be used with the Camera input.
BATTERY 12V(+)
Steering Wheel Control (SWC) Input
(Compatible with most SWC adapters)

6
Control Locations
;'9'%7 OPERATION
MicroSD Slot
Microphone
Eject
Reset
Voice Control
1
2
3
Tune/Track Up
Power/Mute/Volume
Tune/Track Down
USB Port
Auxiliary Input
6
7
8
9
4
510
1. Standby Mode or Dimmer
2. Eject
3. Voice Control
4. Audio
5. Navigation Hot Button
6. Settings
56
The touch screen controls on the bottom of each screen allow direct access to important
features during any mode of operation.
Touch Screen Controls
1 2 4
3

7
;'9'%7 OPERATION
Momentarily press to turn the unit on or off.
Rotate the volume knob to increase or decrease the volume level.
Momentarily press MUTE to silence the audio. Momentarily press MUTE
again to return to the previously selected volume. Rotating the volume
knob while the volume is muted will also cancel the mute function.
Press MODE to step through all available input modes: Radio, Disc,
Settings, Rear Camera, USB, microSD, Bluetooth Phone, Bluetooth
Audio and Auxiliary Input. Modes of operation are indicated on the
display and/or the monitor. Optional USB device must be inserted to
appear in the mode selection string.
Connect external audio devices to the 3.5mm auxiliary input on the
front panel.
Insert a USB device to play MP3 files or view JPG photos.
When the monitor is open, press the house icon in the top left corner to
access the Main Menu screen.
Power On/Off
Volume
Mute
Mode
Auxiliary Input
USB
Main Menu
General Operation

8
;'9'%7 OPERATION
From the Main Menu screen, press SETTINGS to access the Setup
menu and adjust the following options.
General:
•OSD Language - Select English Only.
•Wallpaper - Select between three available wallpaper options.
•Screen Calibration - Select to calibrate the touch screen.
•Radio Area - Select your current geographic area: Europe, USA,
South America, Russia and Asia.
•Time Setting - Adjust the current time (hours and minutes) and
choose between a 12-hour and 24-hour clock.
•Beep - Select to turn the audible beep On or Off.
•Camera - Select to turn the rear camera On or Off.
•Version - Select to view information about the unit.
•Restore Default - Select to restore the unit to default settings.
Audio:
•Sound Effect - Select to access three sound effect sub-menus.
•EQ - Select from any preset equalization curve (Classic, Rock,
Pop, Jazz, Beat, Flat) or use custom settings (User).
•Loudness - Turn the Loudness setting On or Off.
Video:
•Aspect Ratio - Select desired aspect ratio: 4:3PS, 4:3LB or 16:9.
•Adjust - Select to adjust levels of Brghtness, Contrast, Hue,
Saturation and Sharpness.
•Panel - Select to choose backlight settings: 10s, 20s, 30s or Off.
Bluetooth:
•Auto Connect - Turn auto connect feature On or Off.
•Auto Answer - Turn auto answer feature On or Off.
General Operation
Setup Menu

9
;'9'%7 OPERATION
Select the Radio icon from the Main Menu screen.
Press to return to Main Menu screen.
Displays current mode of operation.
Press << to tune radio to a lower frequency. Press < to tune the unit
down one step at a time.
Press between 2 AM and 3 FM bands.
Press to toggle between Local and DIstance tuning.
Press >> to tune radio to a higher frequency. Press > to tune the unit
up one step at a time.
Press to scan presets and listen to the first 10 seconds of each. Press
again to stop scanning and listen to the station. Press and hold to
automatically find and store the strongest stations as presets.
Press to toggle between Stereo and Mono tuning.
Press and hold to set the current station in that preset spot. Press
momentarily to recall the desired preset and begin playback.
Radio Operation
Main Menu 1
Current Mode Indicator 2
Tune Frequency Down 3
Band 4
Local / Distance 5
Tune Frequency Up 6
AS/PS 7
Stereo 8
Preset Stations 9
3
AM/FM Tuner Operation
6
4
5
7
8
9
1 2

10
;'9'%7 OPERATION
CD/USB/microSD Operation
CD/USB/microSD
Operation
Main Menu 1
Current Mode Indicator 2
Repeat 3
Random 4
Previous File / Track 5
Play / Pause 6
Next File / Track 7
Folder Access 8
To play audio files from a disc or MP3 files from a disc or USB device,
insert disc or device and playback will begin automatically. To return
to disc or USB playback from another mode of operation, select the
corresponding icon from the Main Menu.
• Disc Playback - Insert disc into the slot, and playback will begin
automatically.
• USB Playback - Insert a USB device into the USB slot.
• microSD Playback - Insert a microSD card into the microSD slot.
Press to return to Main Menu screen.
Displays current mode of operation.
Press to select a repeat option: Repeat 1, Repeat Folder or Repeat Off.
Press to enable or disable random playback.
Press to go back to the previous file or track.
Press to pause or resume playback.
Press to advance to the next file or track.
Press to access all folders on device.
2
3
4
5 6 7 8
1

11
;'9'%7 OPERATION
Media Compatibility - CD/DVD
File Type MP3
File System
ISO9660 Level 1, Level 2 
Level 3 X
ISO9660
Extension JOLIET Playback 
Filename 32 bytes
Other
Extensions
ROMEO Playback X
Filename X
Apple ISO X
File
Extension
.mp3/.MP3/.Mp3/.mP 3 
.rmp/.m4a X
MPEG
Format
MPEG 1 
MPEG 2 
MPEG 2.5 
Sampling
Frequency
MPEG 1 32/44.1/48kHz
MPEG 2 12/16/22.05/24kHz
MPEG 2.5 8/11.025/12kHz
Bitrate
MPEG 1 32 ~ 320kbps
MPEG 2 8 ~ 160kbps
MPEG 2.5 8 ~ 160kbps
Other
Information
Directory Depth Unlimited
File Name Length 32 bytes
Total File Number 2000 files
Total Folder Number 200 folders
File Number via Folder 2000 files
MP3 ID3 TAG
ver.1.x 
ver.2.x 
Title, Artist, Album 
Notes:
• It is not possible to view JPG files on the in-dash monitor while the vehicle is moving. This is a safety feature to
prevent driver distraction.
• The JPG image viewer function will only operate when vehicle is in park and the parking brake is engaged as
described on page 26.

12
;'9'%7 OPERATION
Media Compatibility - USB/microSD
File Type MP3
File System FAT FAT 12 X
FAT 16/FAT 32 
File
Extension
.mp3/.MP3/.Mp3/.mP 3 
.rmp/.m4a X
MPEG
Format
MPEG 1 
MPEG 2 
MPEG 2.5 
Sampling
Frequency
MPEG 1 32/44.1/48kHz
MPEG 2 12/16/22.05/24kHz
MPEG 2.5 8/11.025/12kHz
Bitrate
MPEG 1 32 ~ 320kbps
MPEG 2 8 ~ 160kbps
MPEG 2.5 8 ~ 160kbps
Other
Information
Directory Depth Unlimited
File Name Length 32 bytes
Total File Number 2000 files
Total Folder Number 200 folders
File Number via Folder 2000 files
MP3 ID3 TAG
ver.1.x 
ver.2.x 
Title, Artist, Album 
Notes:
• For USB/microSD mode, it is not possible to view JPG files on the in-dash monitor while the vehicle is moving. This is
a safety feature to prevent driver distraction.
• The JPG image viewer function will only operate when vehicle is in park and the parking brake is engaged.
• Due to ongoing technological advancement, some USB flash drives may be incompatible with
this unit.

13
;'9'%7 OPERATION
Media Compatibility
The following types of discs/files are compatible:
• CD-DA, CD-ROM (ISO), CD-R, CD-RW
• DVD Video, DVD+R/RW, DVD-R/RW
The following types of discs/files are not compatible:
• WMA files that are protected by DRM (Digital Rights Management)
• WMA lossless format
• Discs recorded with Track At Once or packet writing
• MP3 PRO format, MP3 playlists
• RMP format
• WAV format
• WMV format
• AAC, protected AAC, M4A format
Some recordable DVD's and CD's may be incompatible with this unit,
depending on media type and recording method.
MP3 playback sequence begins in the root folder of the disc, USB device or
microSD card. Any empty folders or folders that do not include MP3/JPG files
are skipped.
ISO9660 standards:
• Maximum nested folder depth is 8 (including the root folder).
• Valid characters for folder/file names are letters A-Z (all caps), numbers
0-9, and “_” (underscore). Some characters may not be displayed correctly,
depending on the character type.
• This device can play back discs in Joliet and other standards that conform
to ISO9660. MP3 written in the formats other than the above may not play
and/or their file names or folder names may not be displayed properly.
Some files may not play or be displayed correctly, depending on sampling
rates and bit rates.
For best results, use the following settings when ripping MP3 files:
128kbps or higher constant bit rate
44.1kHz or higher sampling frequency
Media Compatibility
Playback Order
Compatible Recording Formats
Notes

14
Inserting a Disc
Ejecting the Disc
Touchscreen Controls
Main Menu 1
Elapsed Time 2
Repeat 3
Previous Chapter 4
Play / Pause 5
Next Chapter 6
Random 7
Audio 8
Insert disc into the slot, and playback will begin automatically. Sub-
menus may have to be pressed to access the DVD content. Read the
directions of your specific DVD disc for other features.
Press to eject the disc.
Press anywhere on the LCD to display touch screen controls.
Press to return to Main Menu screen.
Displays elapsed time and time remaining on the DVD.
Press to select from the following repeat options: Repeat Chapter,
Repeat Title, Repeat All or Repeat Off
Press to return to the previous chapter on the DVD.
Press to play or pause DVD playback.
Press to advance to the next chapter.
Press Random to play chapters in random order or Random Off to play
disc in order.
Press to adjust audio language settings.
DVD Operation
;'9'%7 OPERATION
1
2
43 5 76 8

15
DVD Operation
;'9'%7 OPERATION
Press to adjust screen color settings.
Press to zoom in or out on an image.
Press to access subtitle options.
Press to adjust audio options.
Press to put the monitor in standby mode.
Press to directly access the setup menu.
Screen Setup 9
Zoom 10
Subtitle 11
Audio 12
Monitor On/Off 13
Settings 14
109 11 1312 14

16
;'9'%7 OPERATION
Bluetooth Operation
Before you can use a Bluetooth device, it must be paired and
connected. Make sure that Bluetooth is activated on your device
before you begin the pairing process.
The unit broadcasts the pairing signal constantly when no
devices are currently connected. Complete the pairing sequence
from your Bluetooth device. Refer to the owner's manual for
your device for more details. The device name is ";'9'%7". The
Bluetooth passcode is "0000". The unit can be in any mode of
operation when pairing is performed. On certain phones, pairing
may need to be done more than once.
Most Bluetooth devices support the auto-connect feature and will
connect automatically if the device is in range when the unit is
powered-on. If your device was previously paired but does not
connect, enter the Bluetooth setup menu and ensure that Auto
Connect is On.
To access the phone, select Bluetooth Phone from the Main Menu
or press the phone icon from any operational mode.
Press to return to the Main Menu screen.
Displays current mode of operation.
Use the phone keypad to dial the desired phone number.
Alternately, numbers can be dialed directly from the phone.
Press to access Bluetooth phone.
Press to access Bluetooth music.
Press to view a list of available devices.
Press to connect a call.
Press to end a call.
Preparation
Pairing a New Device
Connecting a
Paired Device
Bluetooth Phone
Main Menu 1
Current Mode Indicator 2
Phone Keypad 3
Bluetooth Phone 4
Bluetooth Music 5
Available Devices 6
Talk 7
End Call 8
12
4
5
6
7
3
8

17
;'9'%7 OPERATION
Bluetooth Operation
Play / Pause 15
Next File/Track 16
Bluetooth Phone 17
Press to go back to the previous file or track.
Press to pause or resume playback.
Press to advance to the next file or track.
14 15 16

18
;'9'%7 OPERATION
Voice Activation
Your receiver is designed with an easy access voice activation button to use Siri® or the Google Assistant™ via
your car's Bluetooth. Interact with your smartphone assistant while you drive with only the push of a button!
Bluetooth should be paired between your smartphone and the receiver. Press the voice activation button , and
the receiver will switch into Bluetooth mode, This will activate Siri® or Google AssistantTM on your smartphone.
You will need to manually switch back to the previous or desired mode once this operation is terminated.
Navigation Hot Button
Press the Navi hot button to connect your receiver to your phone through the on-screen UI. Instantly stream audio
from your favorite navigation apps on a connected smartphone through your car's reclever vla Bluetooth.
Note: A smartphone with date is required to stream navigation.
Dual iPlug P1 Smart App Remote Control
Use the Dual iPlug P1 Smart App Remote Control on an
Apple or Android smartphone to control the receiver via
Bluetooth.
Change the mode, station, song, volume, and settings
directly from your smartphone without being in the
receiver's line-of-sight.
Download the Dual iPlug P1 Smart App Remote Control
from Apple App Store or Google Play Store and install it
on your smartphone or tablet (QR code download link on
the right).

19
;'9'%7 OPERATION
Front 3.5mm Aux Input
Rear Camera Operation - (Optional)
Connect an optional audio source into the 3.5mm (front panel) input.
Select auxiliary input from the Main Menu to listen to audio.
Adjust volume on the external audio source as needed (if connected to the
headphone output of the device).
Connect an optional rear camera to the Camera Input (Black RCA connector with
violet cap). Refer to the wiring diagram for details.
Manual selection - Touch CAMERA icon from the Main Menu or from any
operational mode (when enabled) to select camera mode. Touch the top left area
on the screen to exit camera mode.
Note: The manual mode is for dedicated cameras that are ALWAYS on while
driving, it is not meant for cameras that are connected to the vehicle's reverse
light.
The unit will automatically select camera mode when connected to the reverse
lamp circuitry.
Auxiliary Input
Using Rear Camera
Auto Selection

20
;'9'%7 OPERATION
SWC Input Operation
The built-in SWC Interface is compatible with PAC steering wheel control modules. The
PAC SWI-RC is recommended. A third-party adapter must be used in order for the
;'9'%7 to be compatible with any steering wheel controls. The following controls are
available for most vehicles.
1. Volume Up (+) 4. Preset (+) 7. Seek/Track Up (+) 10. BT Talk
2. Volume Down (-) 5. Preset (-) 8. Seek/Track Down (-) 11. BT End
3. Mute 6. Mode 9. Band
Note: Not all OE steering wheel functions may be supported by the ;'9'%7
PAC SWI-RC Installation Hints
1. Set "Radio Select Switch". Set the SWI-RC to position 7 - "Pioneer/Other/Sony".
2. To program, use the Pioneer/Sony/Other radio function mapping order for Dual units.
3. When programming the SWI-RC, if a function is not supported (or not desired), then the
function MUST be skipped as per the PAC SWI-RC instructions.
4. The SWC function MUST be programmed in the correct order per the PAC SWI-RC radio
function mapping order instructions.
Function
Order
Function
Mapping
SWI-RC (3.3VDC Reference)
Center Pin (Ring) Voltage
(Function Select) Tip Pin Voltage
1 Volume + H 5.0v 2.07
2 Volume - H 5.0v 2.32
3 Mute H 5.0v 1.01
4 Preset + L 0.0V 1.54
5 Preset - L 0.0V 1.81
6 Source H 5.0v 0.60
7 Seek + / Track + H 5.0v 1.54
8 Seek - / Track - H 5.0v 1.81
9 Band H 5.0v 2.73
10 BT Talk L 0.0V 0.60
11 BT End L 0.0V 1.01