AMX DUX-TX-70 User manual

USER MANUAL
DUX-TX-70
DUX-RX-70
HDMI EXTENDER

2USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Table of Contents
Important Safety Instructions ...............................................................................03
Introduction...........................................................................................................04
Features............................................................................................................04
Packing List...........................................................................................................05
Specifications........................................................................................................06
DUX-TX-70 Transmitter....................................................................................06
DUX-RX-70 Receiver........................................................................................07
Cable Specifications .........................................................................................07
Panel .....................................................................................................................08
DUX-TX-70 Transmitter....................................................................................08
DUX-RX-70 Receiver........................................................................................10
Install Hardware....................................................................................................12
Operate with IR .....................................................................................................14
Control the Display...........................................................................................14
Control the Source ...........................................................................................15
Operate with RS232 ..............................................................................................16
RS232 Pinout...................................................................................................16
RS232 for Firmware Upgrading........................................................................16
RS232 for Serial Communication.....................................................................17
Troubleshooting ....................................................................................................18

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USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Important Safety Instructions
NOTE:
We reserve the right to change the content from time to time without notice.
WARNINGS:
To reduce the risk of fire, electric shock or product damage, please observe
the following Safety Instructions while installing and operating the product:
Do not expose this apparatus
to rain, moisture, dripping or
splashing. No objects filled with
liquids, such as vases, shall be
placed on the apparatus.
To prevent risk of electric
shock or fire hazard due to
overheating, do not obstruct
the unit’s ventilation openings
with newspapers, tablecloths,
curtains, and similar items.
Do not install near any heat
sources such as radiators,
heat registers, stoves, or other
apparatus (including amplifiers)
that produce heat.
Do not place sources of naked
flames, such as lighted candles,
on the unit.
Clean this apparatus only with
dry cloth.
Protect the power cord from
being walked on or pinched
particularly at plugs.
Refer all servicing to qualified
service personnel.
Unplug this apparatus during
lightning storms or when un-
used for long periods of time.
Only use attachments/accesso-
ries specified by the manufac-
turer.
Do not install or place this
unit in a bookcase, built-in
cabinet or in another confined
space. Ensure the unit is well
ventilated.

4USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Introduction
DUX-TX-70 Transmitter and DUX-RX-70 Receiver are a pair of HDMI extenders used to
extend HDMI signals up to 70 meters / 230ft (1080p) or 40 meters/131ft (4K@30Hz)
over a single CatX cable.
Through PoE, one power supply to DUX-TX-70 will be able to power both DUX-TX-70
and DUX-RX-70. Via IR pass-through, you can either control the source from the display
location or the display from the source location. The two HDMI extenders allow RS232
control via pass-through over a CatX cable.
The DUX-TX-70 and DUX-RX-70 HDMI extenders are ideal for applications at homes,
offices, digital entertainment centers, control centers, conference rooms, schools and
corporate training spaces, where a long-distance HDMI signal distribution is needed.
Features
 Slim appearance, space saving and easy-to-install.
 For 1080p signal, supports HDMI input and output cables up to 15 meters.
 For 4k@30Hz signal, supports HDMI input cable up to 10 meters and HDMI output
cable up to 15 meters.
 HD signal transmission up to 70 meters / 230ft (1080p) or 40 meters / 131ft
(4K@30Hz) via a single CatX cable.
 Single CatX cable solution, including transmission of HD Audio/Video, IR control,
RS232 pass-through, and PoE (DUX-TX-70 to DUX-RX-70).
 Fully compliant with HDMI 1.4, and compatible with HDMI 2.0 (4K@60Hz 4:2:0).
 HDCP 2.2 compliant.
 Bi-directional IR control from source or display location.
 RS232 port for firmware upgrading and serial communication.
 Universal power supply of high reliability and energy efficiency for reduced
operation cost.
NOTE: The actual signal transmission distance depends on signal resolution and cable
quality.

5
USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Packing List
DUX-TX-70 Transmitter
 1 x DUX-TX-70 Transmitter
 1 x Power Adapter (12 VDC,1.5A)
 1 x Phoenix Male Connector (3.5 mm, 3 pins)
 1 x IR Emitter
 1 x Broadband IR Receiver (30 KHz ~ 50 KHz)
 2 x Mounting Brackets
 1 x User Manual
DUX-RX-70 Receiver
 1 x DUX-RX-70 Receiver
 1 x Power Adapter (12 VDC,1.5A)
 1 x Phoenix Male Connector (3.5 mm, 3 pins)
 1 x IR Emitter
 1 x Broadband IR Receiver (30 KHz ~ 50 KHz)
 2 x Mounting Brackets
 1 x User Manual

6USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Specifications - DUX-TX-70 Transmitter
Technical
Input 1 x HDMI IN
Input Signal Type TMDS
Input Resolution Support 4K, 1080p, 1080i, 720p, 576p, 480p, 576i, 480i
Input Video Level 0.5-1.2 V p-p
Input DDC Signal 5 V p-p
Output 1 x HDBT OUT
Output Signal Type HDBT
Output Resolution Support 4K, 1080p, 1080i, 720p, 576p, 480p, 576i, 480i
Video Impedance 100 Ω
Maximum Pixel Clock 297 MHz
General
Operating Temperature / RH 32°F ~ 113°F (0°C ~ 45°C) / 10% ~ 90%, non-condensing
Storage Temperature / RH -4°F ~ 140°F (-20°C ~ 70°C) / 10% ~ 90%, non-condensing
Power Supply 12 VDC 1.5A
Power Consumption ≤11.8 W (pair)
ESD Protection
Human-body model:
• ±8 kV (Air-gap discharge)
• ±4 kV (Contact discharge)
Surge Protection Voltage: ±1 kV
Electrical Fast Transient/Burst Data communication cord: 1 kV
Power core: 2 kV
Net Weight 400 g
Dimension (W × H × D) 173 mm × 18 mm × 94.8 mm (6.84” × 0.71” × 3.75”)
Certification CE, FCC

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USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Specifications - DUX-RX-70 Receiver
Technical
Input 1 x HDBT IN
Input Signal Type HDBT
Input Resolution Support 4K, 1080p, 1080i, 720p, 576p, 480p, 576i, 480i
Input Video Level 0.5-1.2 V p-p
Input DDC Signal 5 V p-p
Output 1 x HDMI OUT
Output Signal Type TMDS
Output Resolution Support 4K, 1080p, 1080i, 720p, 576p, 480p, 576i, 480i
Video Impedance 100 Ω
Maximum Pixel Clock 297 MHz
General
Operating Temperature / RH 32°F ~ 113°F (0°C ~ 45°C) / 10% ~ 90%, non-condensing
Storage Temperature / RH -4°F ~ 140°F (-20°C ~ 70°C) / 10% ~ 90%, non-condensing
Power Supply 12 VDC 1.5A
Power Consumption ≤11.8 W (pair)
ESD Protection
Human-body model:
• ±8 kV (Air-gap discharge)
• ±4 kV (Contact discharge)
Surge Protection Voltage: ±1 kV
Electrical Fast Transient/Burst Data communication cord: 1 kV
Power cord : 2 kV
Net Weight 400 g
Dimension (W × H × D) 173 mm × 18 mm × 94.8 mm (6.84” × 0.71” × 3.75”)
Certification CE, FCC
Cable Specifications (Straight-through Ethernet cable of T568B is recommended)
Cable Type Range Supported Video
Cat6a/7
70 m / 230 ft 1080p@60Hz, 36 bpp
40 m / 131 ft
1080p@60Hz, 48 bpp
1080p@60Hz, 3D
4K@30Hz
Cat5e/6
60 m / 197 ft 1080p@60Hz, 36 bpp
35 m / 115 ft
1080p@60Hz, 48 bpp
1080p@60Hz, 3D
4K@30Hz

8USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Panel - DUX-TX-70 Transmitter
Item Name Description
1 POWER LED On: DUX-TX-70 is powered on.
Off: DUX-TX-70 is powered off.
2 STATUS LED Blinking: DUX-TX-70 is working properly.
Off: DUX-TX-70 is not working properly.
3 HDCP LED
On: HDCP video is being transmitted.
Blinking: Non-HDCP video is being transmitted.
Off: No HDMI signal.
4 LINK LED On: DUX-TX-70 and DUX-RX-70 are linked.
Off / Blinking: No link or link error.
Fig 1: DUX-TX-70 - Front Panel
POWER STATUS HDCP LINK
1 2 3 4

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USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Item Name Description
1 DC 12V
Connects the power adapter provided. If DUX-TX-70 is connected to a
power supply, DUX-RX-70 can be powered by DUX-TX-70 through PoE.
DUX-TX-70 and DUX-RX-70 can also be powered individually.
2 HDBT OUT Connects to HDMI IN of DUX-RX-70 using a CatX cable.
3 IR IN Connects the broadband IR Receiver provided.
4 IR OUT Connects the IR Emitter provided.
5 RS232 For firmware upgrading or serial communication.
6 HDMI IN Connects to an HDMI source using an HDMI cable.
7 MODE
NORMAL (Default Setting)
• RS232 signal can be passed through.
• DUX-TX-70 cannot be upgraded.
UPDATE (Only used for firmware upgrading)
• DUX-TX-70 can be upgraded.
• RS232 signal cannot be passed through.
Fig 2: DUX-TX-70 - Rear Panel
IR IN IR OUT HDMI IN NORMALUPDATE
TX RX G
IR IN IR OUT RS232 HDMI IN HDBT OUT MODE
TRANSMITTER DC 12V
1 2 3 4 5 6 7

10 USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Panel - DUX-RX-70 Receiver
Item Name Description
1 POWER LED On: DUX-RX-70 is powered on.
Off: DUX-RX-70 is powered off.
2 STATUS LED Blinking: DUX-RX-70 is working properly.
Off: DUX-RX-70 is not working properly.
3 HDCP LED
On: HDCP video is being transmitted.
Blinking: Non-HDCP video is being transmitted.
Off: No HDMI signal.
4 LINK LED On: DUX-TX-70 and DUX-RX-70 are linked.
Off / Blinking: No link or link error.
Fig 3: DUX-RX-70 - Front Panel
POWER STATUS HDCP LINK
1 2 3 4

11
USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Item Name Description
1 DC 12V
Connects the power adapter provided. If DUX-TX-70 is connected to a
power supply, DUX-RX-70 can be powered by DUX-TX-70 through PoE.
DUX-TX-70 and DUX-RX-70 can also be power individually.
2 HDBT IN Connects to HDMI OUT of DUX-TX-70 using a CatX cable.
3 IR IN Connects the broadband IR Receiver provided.
4 IR OUT Connects the IR Emitter provided.
5 RS232 For firmware upgrading or serial communication.
6 HDMI OUT Connects to an HDMI display using an HDMI cable.
7 MODE
NORMAL (Default Setting)
• RS232 signal can be passed through.
• DUX-RX-70 cannot be upgraded.
UPDATE (Only used for firmware upgrading)
• DUX-RX-70 can be upgraded.
• RS232 signal cannot be passed through.
Fig 4: DUX-RX-70 - Rear Panel
IR IN IR OUT HDMI OUT NORMALUPDATE
TX RX G
IR IN IR OUT RS232 HDMI OUT HDBT IN MODE
RECEIVER DC 12V
1 2 3 4 5 6 7

12 USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Install Hardware
WARNING:
 Before installation, disconnect the power supplies of all the devices.
 Please use quality cables and accessories specified or provided by the
manufacturer.
 During installation, connect and disconnect cables with caution.
To install DUX-TX-70 and DUX-RX-70 (See Fig 5: Installation Instruction Chart on
Page 13):
1. Connect an HDMI source device (e.g. Blu-ray player, game console, satellite/cable
TV, media server, etc.) to DUX-TX-70’s HDMI IN port via an HDMI cable.
2. Connect a display device (e.g. LED/LCD display or projector) to DUX-RX-70’s
HDMI OUT port via an HDMI cable.
3. Connect DUX-TX-70’s HDBT OUT port to DUX-RX-70’s HDBT IN port via a CatX
cable.
4. Connect an IR Emitter to IR OUT port of DUX-TX-70 and a broadband IR Receiver
to IR IN port of DUX-RX-70. (Or connect a broadband IR Receiver to IR IN port of
DUX-TX-70 and an IR Emitter to IR OUT port of DUX-RX-70.)
5. Connect the power adapter to DUX-TX-70, then connect the adapter to a power
supply. (DUX-TX-70 and DUX-RX-70 can be connected to power individually.)
6. Power on all the units and start operation.
Note: When all set, check the LED indicators of both DUX-TX-70 and DUX-RX-70. For
LED indication, please refer to page 08 and 10.

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USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Fig 5: Installation Instruction Chart
HDBT OUT
CATx Cable
Broadband
IR Receiver IR Emitter
HDMI Cable
Display Remote
Broadband
IR Receiver IR Emitter
HDMI Cable
Blu-Ray Player Remote
HDBT IN
DUX-TX-70
DUX-RX-70
Blu-Ray Player
Display

14 USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Operate with IR
IR pass-through function allows you to control the source from the display location or
the display from source location.
Control the Display
To control the display from the source location:
1. Connect a broadband IR Receiver to IR IN port of DUX-TX-70 ;
2. Connect an IR Emitter to IR OUT port of DUX-RX-70.
When all set, the display can be controlled at the source end through a display remote.
Fig 6: Application Example - Control the Display
HDBT OUT
CATx Cable
Broadband
IR Receiver
HDMI
Display Remote
IR Emitter
HDMI
HDBT IN
DUX-TX-70
DUX-RX-70
Blu-Ray Player
Display

15
USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Control the Source
To control the souce from the display location:
1. Connect an IR Emitter to IR OUT port of DUX-TX-70;
2. Connect a broadband IR Receiver to IR IN port of DUX-RX-70.
When all set, the source can be controlled at the display location through a source device
remote.
Fig 7: Application Example - Control the Source
HDBT OUT
CATx Cable
IR Emmitter
HDMI Cable
Broadband
IR Receiver
HDMI Cable
Blu-Ray Player Remote
HDBT IN
DUX-TX-70
DUX-RX-70
Blu-Ray Player
Display

16 USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Operate with RS232
RS232 Pinout
The following figure shows the RS232 pinout. Please connect with Phoenix Connectors
provided.
RS232 for Firmware Upgrading
RS232 port of DUX-TX-70 and DUX-RX-70 can be used for firmware upgrading.
To upgrade firmware of DUX-TX-70 or DUX-RX-70:
1. Download firmware upgrading execution software (please contact the product
manufacturer or your local dealer) to your PC;
2. Swith the “MODE” to “UPDATE”;
3. Connect your PC to RS232 port using a RS232 Cable;
4. Click to run the execution software;
5. When the upgrading is successful, power cycle the device.
NOTE: DUX-TX-70 and DUX-RX-70 must be upgraded individually.
Fig 8: RS232 Pinout
Control System
TX
TX
RX
RX
GND
GND
HDBT OUTDUX-TX-70
HDBT IN
DUX-RX-70
RS232 Cable
PC
RS232 Cable
PC
Fig 9: RS232 for Firmware Upgrading

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USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
RS232 for Serial Communication
RS232 port of DUX-TX-70 and DUX-RX-70 can also be used for serial communication.。
To start serial communications between DUX-TX-70 and DUX-RX-70:
1. Connect a RS232 Master (or Slave) Device to RS232 port of DUX-TX-70 using a
RS232 cable;
2. Connect a RS232 Slave (or Master) Device to RS232 port of DUX-RX-70 using a
RS232 cable;
3. Connect HDBT OUT of DUX-TX-70 and HDBT IN of DUX-RX-70 using a CatX cable.
4. When all set, serial communication can be realized between the two RS232 devices.
HDBT OUT
CATx Cable
DUX-TX-70
HDBT IN
DUX-RX-70
RS232 Cable
RS232 Device
RS232 Cable
RS232 Device
Fig 10: Application Example - RS232 for Serial Communication

18 USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
Troubleshooting
1. Why the Power LED is off?
• Check that all the devices are on.
• Check that all the cables are qualified and connected properly.
2. Why the Link LED is off or blinking?
• Check that all the devices are on.
• Check that all the cables are qualified and connected properly.
• Check that the length of CatX cable is less than 70 meters (1080P) or 40 meters
(4K). For more information, see Cable Specifications in Specifications.
3. Why the display connected to the DUX-RX-70 shows no picture?
• Check that all the devices are on.
• Check that all the cables are qualified and connected properly.
• Check that the Link LED is steady on. For more information, see Q2 above.
• Check that the display works properly, and that the source device has normal
signals output.
• Ensure that the display device supports HDCP.
• Ensure the length of CatX cable is less than 70 meters (1080P) or 40 meters
(4K). For more information, see Cable Specifications in Specifications.
• Ensure the length of HDMI cables: when transmitting 1080p signal, HDMI input
and output cables should be less than 15 meters; when transmitting 4k@30Hz
signal, HDMI input cable should be less than 10 meters, HDMI output cable less
than 15 meters. For more information, see Cable Specifications in Specifications.
• Check that your display device is switched to the correct source input mode, for
example, switching to HDMI 1 if HDMI 1 interface is connected to DUX-RX-70 via
an HDMI cable.
• Check that no compatibility issue exists between DUX-RX-70 and the display. If
so, replace the display with other models.
4. Why the display connected to the DUX-RX-70 shows snow or mosaic?
• Check that all the cables are qualified and connected properly.
• Check that Ethernet cables are Cat5e/6 or higher gauge.
• Check that the source input device has no such problem as snow, mosaic or with
a damaged disc. If so, replace with another qualified input source.
• Check that no compatibility issue exists between DUX-RX-70 and the display. If
so, replace the display with qualified models.

19
USER MANUAL - DUX-TX-70 / DUX-RX-70 HDMI EXTENDER
AMX DUX SERIES
DUX-8C
Compact 8x8 HDMI 2.0
matrix switcher for video
signals up to 4K@60Hz 4:4:4
(bandwidth 18 Gbps)
DUX-8D
Dual output 8x8 HDMI 2.0
matrix switcher with 4 mir-
rored HDBT outputs for vid-
eo signals up to 4K@60Hz
4:4:4 (bandwidth 18 Gbps)
DUX-TX HDMI 1.4 over HDBT TX up
to 100m
DUX-RX HDMI 1.4 over HDBT RX up
to 100m
DUX-TX-70 HDMI 1.4 over HDBT TX up
to 70m
DUX-RX-70 HDMI 1.4 over HDBT RX up
to 70m
DUX-SCL HDMI scaler up to 4K@60Hz
4:4:4
DUX-SRX HDBT scaling receiver up to
4K@60Hz 4:4:4
DUX-MTX HDMI 1.4 & VGA over HDBT
TX up to 100m
DUX-MTX-WP HDMI 1.4 & VGA over HDBT
wall-plate TX up to 100 m

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without prior notice at any time.
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