Digitus professional DS-55503 User manual

4K HDMI HDBaseT Extender Set,
70m
Manual
DS-55503

Please read below safety instructions carefully before installation and
operation:
1. Please pay attention to all the warnings and hints on this device.
2. Do not expose this unit to rain, moisture and liquid.
3. Do not put any stuff into the device.
4. Do not repair or open this device without professional instructions.
5. Shut off power and make sure environment is safe before
installation.
6. Do not plug-in/out the connected cables when it is in using.
7. Use DC12V/2A. Make sure the specification matched if using 3rd
party DC adapters.
Introduction
This HDBaseT single network cable extender transmits HDMI signal up to
70 meters over Cat 6 network cable fluently and clearly. It is lossless in
signal and supports 3D, 24bits deep color, CEC, HDCP and 4K2K/60Hz
resolution. This product supports to power over network cable, just
connect the power adapter with the receiver unit, can keep this device
working well. It's a perfect solution for audio&video transmission in
applications of HD conference system, HD multimedia education system,
HD digital advertising and signage etc.
Features
1. Support bi-directional IR pass back.
2. Uncompressed HDMI video signal.
3. Support bi-directional RS232 passback.
4. Supported resolution is up to ultra HD 4Kx2K@60Hz.
5. Support HDBaseT, HDCP2.2, CEC, 24 Deep Color.
6. Support LPCM, DTS-HD and Dolby True HD audio.
7. Transmit 4K2K/60Hz signal over Cat 6 up to 70 meters.
8. Can be powered by network cable. It only needs to connect the 12V
power on the receiver unit; both transmitter and receiver start work.

Package Contents
TX Sender x1pcs RX Receiver x1pcs
DC12V/2A x1pcs User manual x1pcs
IR blaster extension
cable x2pcs
IR receiver extension
cable x2pcs
RS232 serial port
cap ×2pcs
Installation Requirements
1. HDMI source devices with HDMI OUTPUT interface
2. Display devices: With HDMI INPUT port
3. Network cables: Cat6/Cat6A/Cat7

Panel Description
1. TX Sender
①Power input Connect with DC 12V/2A power adapter (optional)
②Transmission signal
indicator
1. LED 1: It turns on when power on.
2. LED 2:
It turns on when the transmitter unit and the receiver
unit connect well with each other, and it flashes when
there is no transmission between the transmitter unit
and the receiver unit.
3. LED 3:
It flashes when the receiver unit connected well with
the HDMI display device, and it turns off when no
transmission between the receiver unit and the display
device.
③HDBT Output To connect with receiver by network cable
④HDMI input Connect with HDMI source device
⑤Reset button Press for restarting the unit
⑥RS232 RS232 control
⑦IR receiver extension
cable interface
Connect with IR receiver extension cable. Please make
sure the remote control is within the required range of
IR receiver
⑧IR blaster extension
cable interface
Connect with IR blaster extension cable. Please put the
IR blaster close to source device to best transmit the IR
signal from receiver

2. RX Receiver
①Power input Connect with included DC12V2A power adapter (It is
recommended to power from the receiver unit)
②Transmission signal
indicator
1. LED 1: It turns on when power on.
2. LED 2:
It turns on when the transmitter unit and the receiver
unit connect well with each other, and it flashes when
there is no transmission between the transmitter unit
and the receiver unit.
3. LED 3:
It flashes when the receiver unit connected well with
the HDMI display device, and it turns off when no
transmission between the receiver unit and the display
device.
③HDBT input To connect with receiver by network cable
④HDMI output Connect with HDMI display device
⑤Reset button Press for restarting the unit
⑥RS232 RS232 control
⑦IR receiver extension
cable interface
Connect with IR receiver extension cable. Please make
sure the remote control is within the required range of
IR receiver
⑧IR blaster extension
cable interface
Connect with IR blaster extension cable. Please put the
IR blaster close to source device to best transmit the IR
signal from receiver

Installation
1. Connections
NOTE: It is recommended to power from the receiver unit
2. Bi-directional IR pass back
1) It supports bi-directional IR pass back. User can control DVD at RX
end and control TV at TX end.
2) If control at RX end, please connect IR blaster extension cable with IR
OUT of TX and connect IR receiver extension cable with IR IN of RX. If
control at TX end, please connect IR receiver extension cable with IR
IN of TX and connect IR blaster extension cable with IR OUT of RX.
3. RS232 serial bi-direction passback function
1) Baud rate
Different encoding mechanism cannot mix-connect, the baud rate of
RS232 serial of these transmitter unit and receiver unit, support 4800,
9600, 19200, 28800, 38400, 57600, and 115200
DVD
Sender Receiver
TV
IR IN
IR IN
IR OUT IR OUT

2) Line order
Check and make sure the RS23S serial line connect firmly and well, and
make sure serial data line is connected correctly as below:
If the RS232 serial does not work by following above connection, please
try to change the order of TXD line and RXD line.
3) Check baud rate
If need to check the baud rate at last time, firstly, set the baud rate to
115200 on your serial port test tool before power on . Then power on,
when the RS232 serial of product connects to serial port test tool the
software will read out the baud rate at once.
e.g: software show information "Baud rate: 9600" means 9600 is the
current baud rate.
4) Set baud rate
For example: the current baud rate is 9600, but the baud rate of control
equipment is 19200, so the baud rate should be set as 9600.
At this time, in serial port tool, choose baud rate "9600", then input
command "set: 19200" in character format and send it out.
GND line RXD line
TXD line
GRT

Specification
Items Specifications
HDMI signal Support HDMI2.0 HDCP2.2, support CEC and 24bits deep
color
Resolution Supported 480i/480P/576i/576P/720P/1080i/1080P/3D/4Kx2K
Audio LPCM, DTS Digital, Dolby Digital
Network cable CAT6, CAT6A, CAT7
Transmission length
CAT6 70m
1080p@60Hz 48bpp,
1080p@60Hz 3D, 4Kx2K@60Hz
CAT6A 70m
CAT7 70m
IR control Support 20~60kHz wide frequency devices and
Bi-directional IR transmission
Working temperature 0~55°C
Storage temperature -10~70°C
Humidity 0~90% (no condensation)
Power supply DC 12V/2A x1pcs
Power consumption TX: <6W; RX: <8W
Product dimension 109.49(L)x87.0(W)x23.4(H)mm
Material Iron alloy material
Weight TX: 240g RX: 250g
Color Black

FAQ
Q: No output on screen?
A: 1) Firstly, please check and make sure the power supply is
connected well. Then, check and make sure all cables are
connected correctly.
2) Please check and make sure the right HDMI input port of the
TV/screen has been chosen.
3) Please check and make sure there is HDMI signal to be fed into
transmitter unit, and check and make sure the receiver unit
has been connected well with the display device.
Q: Indicator LED 2 keeps off and no output?
A: Check and make sure the HDMI display device has been switched
to the right HDMI input channel.
Q: Indicator LED 3 keeps off?
A: Check whether the TX’s HDMI IN has signal input and make sure
RX’s OUT is well connected with HDMI display
Q: Output image with snow point?
A: Change the HDMI cable between the transmitter unit and the
source device; it will be better to use a shorter HDMI cable for
re-testing.
This is a Class A product. In home environment, this product may cause radio interference. In
this case, the user may be required to take appropriate measures.
Hereby Assmann Electronic GmbH, declares that the Declaration of Conformity is part of the
shipping content. If the Declaration of Conformity is missing, you can request it by post
under the below mentioned manufacturer address.
www.assmann.com
Assmann Electronic GmbH
Auf dem Schüffel 3
58513 Lüdenscheid
Germany