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Quick Start Guide

DA4-HDMI20-C

Further Information

Contact Us

[email protected]

+36 1 255 3800

[email protected]

+36 1 255 3810

Lightware Visual Engineering PLC.

Peterdy 15, Budapest H-1071, Hungary

Doc. ver.: 1.0 

19210005

Important Safety Instructions

Please read and keep the information in the attached safety instructions supplied with the 

product before starting to use the device.

Introduction

Thank  you  for  choosing  Lightware’s  DA4-HDMI20-C  1x4  distribution  amplifier,  which  can 

distribute and amplify one HDMI input signal to four HDMI outputs. This device supports 

HDMI video resolution up to 4K@60Hz 4:4:4, including multichannel audio formats. Besides 

passing EDID information from the display, there are multiple built-in EDID settings that can 

be selected with the 4-pin DIP switch on the front panel. The device also supports firmware 

update though a micro-USB port.

Features

 

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Resolutions of up to 4K@60Hz with 4:4:4 colorspace

 

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HDMI 2.0 and 1.x compliant

 

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HDCP 2.3 support

 

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Supports video resolution downscaling (e.g. 4K to 1080p)

 

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18 Gbps bandwidth

 

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Advanced EDID management: multiple built-in EDIDs can be selected

 

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Built-in equalizer for signal enhancement to avoid signal attenuation in transmission

 

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No signal latency, zero frame delay

 

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Supports CEC passthrough

 

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LEDs indicate current operating status

 

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Firmware update via Micro-USB port

Box Contents

Distributor-amplifier

Safety and Warranty Info, 

Quick Start Guide

5V DC Power Adaptor, 

interchageable plugs

Mounting ear pack

1

Power LED

The LED is lit in red when power is applied.

2

Input LED

The LED is lit in green when HDMI signal is present on the input.

3

Output LEDs

The LEDs is lit in green when HDMI signal is present on the respective output.

4

DIP switch

4-pin DIP switch for EDID setting and HDCP mode selection.

5

Micro-USB port

Firmware update can be performed through this port.

Safety and

Warranty

Info

Quick

Start

Guide

Firmware Update

Please follow the steps below to update the firmware of the device via the Micro-USB port:

1.  Connect the device to the PC with a USB cable.

2.  Power on the device. The PC will automatically detect a U-disk called “BOOTDISK”.

3. 

Double-click on the U-disk to open it, and take note of a file named “READY.txt”.

4. 

Copy the latest update file (.bin) directly to the “BOOTDISK” U-disk.

5. 

The “READY.txt” shall turn into “SUCCESS.txt” upon successful firmware update. If the 

update failed, please check the (.bin) file and then try the process desribed above again.

6. 

Remove the USB cable after firmware update is complete.

Uploading a custom EDID

To upload a custom EDID to the device, please follow these steps:
1.  Connect the device to a host computer using the micro-USB port.

2. 

Make sure that the custom EDID file is in binary format, contains either 128 or 256 bytes 

(with CEA extension), and that its extension is 

.edid

.

3. 

Copy  the  chosen  EDID  file  to  the  device.  If  the  upload  is  successful,  a  file  called 

“E_SUCC.txt” shall appear on the device.

If the upload is successful, the custom EDID can be emulated by setting the DIP switch to the 

010- position.

 

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The custom EDID remains in the device memory even if it is turned off.

1

HDMI Input port

Type-A female HDMI input port to connect an HDMI source.

2

HDMI Output ports

Four type-A female HDMI output ports to connect HDMI displays.

3

DC 5V barrel port

DC barrel port to connect an AC power adapter.

DIP Switch Operation
EDID Management

The DIP switch represents “1” when in the upper position, and “0” when in the lower position.
Switch 1-3 are used for setting the EDID. The DIP switch statuses and their corresponding 

settings are shown on the top of the product.

ID

DIP SET

Emulated EDID

000-

1 2 3

4

Copy from Output 

1

001-

1 2 3

4

Priority select

010-

1 2 3

4

Custom EDID

011-

1 2 3

4

1920x1080p60 

2ch PCM

100-

1 2 3

4

3840x2160p30 

2ch PCM

101-

1 2 3

4

3840x2160p60 

2ch PCM

110-

1 2 3

4

4096x2160p60 

2ch PCM

111-

1 2 3

4

3840x2160p60, HDR, 4:2:0 

2ch PCM

 



If the DIP switch is set to 010- (Custom EDID), but there is no custom EDID present in the 

device, the EDID of the 101- position will be emulated automatically.

HDCP management

When the fourth switch is in the upper position, HDCP capability on the input is disabled. 

When it is in the lower position, HDCP capability is enabled.

ON

1 2 3

4

HDCP capability is enabled.

OFF

1 2 3

4

HDCP capability is disabled.

1

2

3

4

Front view

Rear view

1

2

3

1

2

5

4

3

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