SY AD-18G User manual

SY Electronics Ltd., 7 Worrall Street, Salford, Manchester, M5 4TH
Tel: [phone] – Fax: [phone]
Web: sy.uk
User Manual
SY-AD-18G
18G HDMI 2.0 Audio De-Embedder
Balanced, Un-balanced Analogue and Digital Coax S/PDIF

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This HDMI 2.0 audio de-embedder supports all HDMI signals up to 18Gbps (4K60 4:4:4) with
HDR, EDID and CEC pass-through. It de-embeds the HDMI input audio to analogue balanced,
unbalanced and coax S/PDIF simultaneously for the Pass-through and 2Ch modes, or to digital
coax audio only when set to the Bitstream mode.
This de-embedder will be useful for any situation where the audio needs to be processed
separately from the HDMI signal, such as Video processors or projectors. It is capable of handling
all HDMI resolutions, including the growing 18G sector.
Features
Balanced and Unbalanced audio outputs for L+R and Coax S/PDIF
Supports three audio input modes: Pass-Through, Bitstream and PCM
LPCM 2ch, Dolby 2 / 5.1 Ch and DTS 2 / 5.1 Ch
HDMI HBR (High Bit Rate) supported in PASS mode only
Resolutions up to HDMI 2.0 4K60 4:4:4 (18Gbps), HDR
HDCP 1.4/2.2 supported on HDMI IN – EDID and CEC pass-through
HDCP 1.4 only on HDMI OUT
Audio de-embed even when no display connected
Panel Descriptions
Figure 1 - Front
Figure 2 - Rear
Front
Name
Description
Power LED
RED – Powered with no HDMI input
GREEN when an HDMI input signal is detected
Switch
Set Audio mode to EDID Pass-through, Bitsteam or 2ch Only
HDMI IN
HDMI Input connector from HDMI source
Service
Only for service
PSU
12V DC PSU input
Rear
Name
Description
HDMI Out
HDMI Output connector to HDMI sink
5 way block
Pluggable screw terminal for balanced L/R analogue audio
L Phono & R Phono
Phono connectors for unblanced L/R analogue audio
COAX Phono
Digital audio output

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System Connection
The AD-18G can be located anywhere in the HDMI cabling, the following diagram is only an
installation example.
Figure 3 - SY-AD-18G Connection
Power LED
The front panel power LED will be either red or green when the de-embedder is powered:
Red indicates that the AD-18G is powered but there is no HDMI input signal present.
Green indicates that the AD-18G is powered and the HDMI input signal is present.
Switch Settings
The AD-18G can operate in one of three modes that sets the HDMI IN EDID:
1. Pass – Use the audio settings given in the display EDID
2. Bitstream – Only provide S/PDIF digital audio output
3. 2CH – Force 2 channel LPCM mode only

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The following table summarises the audio outputs that are active for each setting:
Mode
Analogue Audio
Digital Audio
Pass
Yes
Yes
Bitstream
No
Yes
PCM
Yes
Yes
Output Connectors
The AD-18G provides up to four connection modes:
1. Balanced stereo analogue audio on the 5-way pluggable connector
2. Unbalanced stereo analogue audio on the 5-way pluggable connector
3. Unbalanced stereo analogue audio from the L & R phono connectors
4. Digital S/PDIF audio from the COAX phono connector
Balanced Audio Output Wiring
All five connections are required when using balanced audio, be sure to note the polarity of the
output signals and ensure that they are wired correctly to the amplifying equipment.
Figure 4 - Balance Audio Wiring
Unbalanced Audio Output Wiring
Only three connections are required when using unbalanced audio from the 5-way pluggable
block. Only use left and right signals that have the same polarity symbol when using this
configuration.
Figure 5 - Unbalanced Audio Wiring

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Troubleshooting
The following table lists some of the basic checks that should be performed before determining
that the product may be faulty:
Problem
Possible
cause
Solutions to try first
Power LED off
PSU
problem
Check that PSU output voltage is correct and the current rating
is sufficient to power the product.
Check that connection polarity is correct – This product uses
centre positive connection.
Power LED red
No HDMI
Input
Check that the HDMI source is outputting an image.
Check that the HDMI cables are good and properly connected.
Power LED green,
but no image
HDMI
output
Check that the HDMI sink is on.
Check that correct input is selected on the HDMI sink device.
Check that the HDMI cables are properly connected.
No analogue
audio
Switch
setting
Analogue audio is only available when the switch is in either the
PASS or the 2CH position.
Check the wiring of the audio connections.
Lack of centre in
stereo image
Phasing
error
Check the wiring of the analogue audio connections is correct at
the 5-way pluggable block and the amplifier input. The
polarities used for both the left and right channels must be
identical for both the SY-AD-18G and the amplifier input.
No digital audio
S/PDIF
Check that the wiring to the COAX output is correct.
Check that the equipment receiving the digital audio is able to
do so.
Ensure that the receiving equipment has its digital audio input
enabled and/or selected.

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Specifications
General
HDMI Video Resolution
VESA and SMPTE 480p to 2160p with 3D.
All HDMI resolutions to 3840x2160p @60Hz 4:4:4 (18 Gbit/s)
480p@60Hz 576p@50Hz 720p@60Hz
1080p@24Hz 1080p@50Hz 1080p@60Hz
4K@24Hz 4K@30Hz 4K@60Hz 4:4:4
All PC resolutions to 1920x1200@60Hz
HDMI Version
2.0 –All HDMI versions to 2.0v
HDCP Version (Input)
1.4 and 2.2
HDCP Version (Output)
1.4 Only
Coax digital audio format
LPCM 2ch, Dolby Digital 2 or 5.1ch, DTS 2 or 5.1ch
Input Connectors
1x HDMI
1x 2.1mm DC connector
Output Connectors
1x HDMI
1x 5 way pluggable screw terminal for L+R balanced
2x Phono for L+R unbalanced
1x Phono for Coax S/PDIF
Power Supply
12V DC @ 1A max.
Power Consumption
3W max.
Environmental
Operating Temperature
-10 to +55°C (+14 to +131°F)
Operating Humidity
10 to 90 % RH (non-condensing)
Weight
245g
Physical
Dimensions (WxHxD)
129 x 21.5 x 77mm
Case Material
Steel chassis
Part Number
SY-AD-18G
18G Audio De-Embedder

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Safety Instructions
To ensure reliable operation of this product as well as protecting the safety of any person using
or handling these devices while powered, please observe the following instructions.
1. Use the power supply provided. If an alternate supply is required, check the voltage,
polarity and that it has sufficient power to supply the device it is connected to.
2. Do not operate this product outside the specified temperature and humidity range
given in the above specifications.
3. Ensure there is adequate ventilation to allow this product to operate efficiently.
4. Repair of this equipment should only be carried out by qualified professionals as this
product contains sensitive devices that may be damaged by any mistreatment.
5. Only use this product in a dry environment. Do not allow any liquids or harmful
chemicals to come into contact with this product.
After Sales Service
1. Should you experience any problems while using this product, firstly refer to the
Troubleshooting section in this manual before contacting SY Technical Support.
2. When calling SY Technical Support, the following information should be provided:
Product name and model number
Product serial number
Details of the fault and any conditions under which the fault occurs.
3. This product has a two year standard warranty, beginning from the date of purchase
as stated on the sales invoice. For full details please refer to our Terms and
Conditions.
4. SY Product warranty is automatically void under any of the following conditions:
The product is already outside of its warranty period
Damage to the product due to incorrect usage or storage
Damage caused by unauthorised repairs
Damage caused by mistreatment of the product
5. Please direct any questions or problems you may have to your local dealer before
contacting SY Electronics.

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