Car-Interface CI-RL4-A40 User manual

Version 20:05.2022 HW CAM(V100) / (V20.3) CI-RL4-A40
Video-inserter
CI-RL4-A40
Compatible with
Mercedes Benz vehicles with
Garmin Audio30 or Audio40 infotainment
Video-inserter for front- and rear-view camera
and two additional video sources
Product features
Video-inserter for factory-infotainment systems
1 CVBS Input for rear-view camera
1 CVBS Input for front camera
2 CVBS video-inputs for after-market devices (e.g. USB-Player, DVB-T2 tuner)
Automatic switching to rear-view camera input on engagement of the reverse gear
Automatic front camera switching after reverse gear for 10 seconds
Video-in-motion (ONLY for connected video-sources)
Video-inputs NTSC and PAL compatible

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Contents
1. Prior to installation
1.1. Delivery contents
1.2. Checking the interface compatibility of vehicle and accessories
1.3. Connectors - video interface
1.4. Connectors - daughter PCB
1.5. Dip-switch settings
1.5.1. 8 dip –black
1.5.1.1. Activating the front camera input (dip 1)
1.5.1.2. Enabling the interface’s video inputs (dip 2-3)
1.5.1.3. Rear-view camera setting (dip 5)
1.5.2. 4 dip - red
2. Installation
2.1. Place of installation
2.2. Connection scheme
2.3. Installation –Daughter PCB
2.3.1. Warning notes, concerning the installation of ribbon cables
2.4. Connection –20pin picture signal cable
2.5. Connection –10pin Power / CAN cable
2.6. Analogue power supply
2.7. Power supply output
2.8. Connection –video inputs
2.8.1. Audio insertion
2.8.2. After-market front camera
2.8.3. After-market rear-view camera
2.8.3.1. Case 1: Interface receives the reverse gear signal
2.8.3.2. Case 2: Interface does not receive the reverse gear signal
2.9. Connection –external keypad
3. Interface operation by external keypad
4. Picture settings
5. Specifications
6. Frequently asked questions

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Legal Information
By law, watching moving pictures while driving is prohibited, the driver must not be
distracted. We do not accept any liability for material damage or personal injury resulting,
directly or indirectly, from installation or operation of this product. This product should only
be used while standing or to display fixed menus or rear-view-camera video when the
vehicle is moving, for example the MP3 menu for DVD upgrades.
Changes/updates of the vehicle’s software can cause malfunctions of the interface. We
offer free software-updates for our interfaces for one year after purchase. To receive a free
update, the interface must be sent in at own cost. Labour cost for and other expenses
involved with the software-updates will not be refunded.
1. Prior to installation
Read the manual prior to installation.
Technical knowledge is necessary for installation. The place of installation has to be free of
moisture and away from heat sources.
1.1. Delivery contents

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Requirements
Brand
Compatible vehicles
Compatible systems
Mercedes-Benz
Vito (W447) since about 2019
Garmin Audio30/Audio40
Only for head-units made by Garmin - not
compatbile with Audio40 made by Pioneer
Limitations
Video only The interface inserts ONLY video signals into the infotainment.
For inserting Audio signals either the possibly existing factory audio-AUX-input or
a FM-modulator can be used.
In case that 2 AV sources shall be connected, a desired audio switching will
require additional electronic.
Factory rear-view camera Automatically switching-back from inserted video to factory rear-view camera is
only possible while the reverse gear is engaged. To delay the switch-back an
additional electronic part is required.
After market front camera The front camera will automatically be switched for 10 seconds after disengaging
the reverse gear. A manually front camera switching is possible by external
keypad.
1.2. Checking the compatibility of vehicle and accessories

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1.3. connectors - video-interface
The video-interface (daughter PCB) converts the video signals of connected after-market
sources in a factory monitor compatible picture signal which is inserted in the factory
monitor, by using separate trigger options.
1.4. connectors –daughter PCB

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1.5. Dip-switch settings
1.5.1. 8 dip - black
Some settings have to be selected by the dip-switches on the
video interface.
Dip position down is ON and position up is OFF.
*The front camera will automatically be switched for 10 seconds after disengaging the
reverse gear (see following information).
After each Dip-switch-change a power-reset of the Video Interface has to be performed!
1.5.1.1. Activating the front camera input (dip 1)
If set to ON, the interface switches for 10 seconds from the rear-view camera to the front
camera input after having disengaged the reverse gear. In addition, a manual switch-over to
the front camera input is possible via keypad (short press) from any image mode.
Description of the front camera power supply: see chapter “Power supply output”.
1.5.1.2. Enabling the interface’s video inputs (dip 2-3)
Only the enabled video inputs can be accessed when switching through the interface’s video
sources. It is recommended to enable only the required inputs, disabled inputs
will be skipped when switching through the video-interfaces inputs.
Dip
Function
ON (down)
OFF (up)
1
Front camera
enabled*
disabled
Power supply
output
(red wire)
+12V (max. 3A) when reverse gear
is engaged incl. 10 seconds delay
and +12V by manual switching to
front camera by keypad
+12V (max. 3A) ACC
2
CVBS AV1-input
enabled
disabled
3
CVBS AV2-input
enabled
disabled
4
No function
Set to OFF
5
Rear-view cam type
after-market
factory or none
6
No function
Set to OFF
7
No function
Set to OFF
8
No function
Set to OFF

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1.5.1.3. Rear-view camera setting (dip 5)
If set to OFF, the interface switches to factory picture while the reverse gear is engaged to
display factory rear-view camera.
If set to ON, the interface switches to its rear-view camera input „V4 Reverse“ while the
reverse gear is engaged.
Note: Dip 4, 6, 7 and 8 are out of function and have to be set to OFF.
After each Dip-switch-change a power-reset of the Video Interface has to be performed!
1.5.2. 4 dip - red
By using the Dip-switches, the factory Head-unit or vehicle can be chosen which the
interface will be connected to.
Dip position down is ON and position up is OFF.
Set all dip switches to off
Vehicle/Navigation
Dip 1
Dip 2
Dip 3
Dip 4
All vehicles
OFF
OFF
OFF
OFF

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2. Installation
Switch off ignition and disconnect the vehicle’s battery! The interface needs a permanent
12V source. If according to factory rules disconnecting the battery is to be avoided, it is
usually sufficient to put the vehicle to “Sleep-Mode”. In case it does not succeed,
disconnect the battery with a resistor lead.
If power source is not taken directly from the battery, the connection has to be checked
for being start-up proven and permanent.
2.1. Place of installation
The video interface is designated to be connected behind the vehicle`s head unit.
The daughter PCB is prepared to be connected inside the factory head unit).

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2.2. Connection scheme

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2.3. Installation –daughter PCB
Remove the factory monitor and open the head-unit`s housing. The daughter PCB is built to
be installed into the optical lead between the monitor panel and mainboard of the vehicles
monitor.