StarTech.com ST12MHDLAN2K User manual

Manual Revision: 10/22/2018
User Manual
For the latest information and specications visit
www.startech.com/ST12MHDLAN2K
www.startech.com/ST12MHDLAN2R
HDMI Over IP Extender Kit - 1080p
Actual product may vary from photos
SKU#: ST12MHDLAN2K & ST12MHDLAN2R

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Compliance Statements
FCC Compliance Statement
This equipment has been tested and found to comply
with the limits for a Class A digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is
no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
turning the equipment o and on, the user is encouraged to
try to correct the interference by one or more of the following
measures:
• Reorient or relocate the receiving antenna
• Increase the separation between the equipment and receiver
• Connect the equipment into an outlet on a circuit dierent
from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for
help
Industry Canada Statement
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe [A] est conforme à la norme
NMB-003 du Canada.
CAN ICES-3 (A)/NMB-3(A)

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Use of Trademarks, Registered Trademarks, and other
Protected Names and Symbols
This manual may make reference to trademarks, registered
trademarks, and other protected names and/or symbols of
third-party companies not related in any way to StarTech.com.
Where they occur these references are for illustrative purposes
only and do not represent an endorsement of a product or
service by StarTech.com, or an endorsement of the product(s)
to which this manual applies by the third-party company
in question. Regardless of any direct acknowledgement
elsewhere in the body of this document, StarTech.com hereby
acknowledges that all trademarks, registered trademarks,
service marks, and other protected names and/or symbols
contained in this manual and related documents are the
property of their respective holders.
For the State of California
WARNING: Cancer and Reproductive Harm
www.P65Warnings.ca.gov

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Safety Statements
Safety Measures
• Wiring terminations should not be made with the product and/or electric
lines under power.
• Product installation and/or mounting should be completed by a certied
professional as per the local safety and building code guidelines.
• Cables (including power and charging cables) should be placed and routed
to avoid creating electric, tripping or safety hazards.
Mesures de sécurité
• Les terminaisons de câblâge ne doivent pas être eectuées lorsque le produit
et/ou les câbles électriques sont sous tension.
• L’installation et/ou le montage du produit doit être réalisé par un
professionnel certié et dans le respect des normes locales et du code de
construction local.
• Les câbles (y compris les câbles d’alimentation et de chargement) doivent
être placés et acheminés de façon à éviter tout risque électrique, de chute ou
de sécurité
安全対策
• 電源が入っている状態の製品または電線の終端処理を行わないでください。
• 製品の設置やマウントは、使用地域の安全ガイドラインおよび建築基準に従い、有資格の専門業者が行うようにしてください。
• ケーブル（電源ケーブルと充電ケーブルを含む）は、適切な配置と引き回しを行い、電気障害やつまづきの危険性など、安全上のリスクを回避するよう
にしてください。
Misure di sicurezza
• I terminiali dei li elettrici non devono essere realizzate con il prodotto e/o le
linee elettriche sotto tensione.
• L’installazione e/o il montaggio dei prodotti devono essere eseguiti da un
tecnico professionale certicato che conosca le linee guida locali sulle norme
edilizie e sulla sicurezza.
• I cavi (inclusi i cavi di alimentazione e di ricarica) devono essere posizionati
e stesi in modo da evitare pericoli di inciampo, rischi di scosse elettriche o
pericoli per la sicurezza.
Säkerhetsåtgärder
• Montering av kabelavslutningar får inte göras när produkten och/eller
elledningarna är strömförda.
• Installation och/eller montering får endast göras av behöriga yrkespersoner
och enligt gällande lokala förordningar för säkerhet och byggnormer.
• Kablar (inklusive elkablar och laddningskablar) ska dras och placeras på så
sätt att risk för snubblingsolyckor och andra olyckor kan undvikas.

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Table of Contents
Compliance Statements........................................................................1
Safety Statements..................................................................................3
Product Diagram ....................................................................................6
Transmitter Front....................................................................................................................................... 6
Transmitter Rear ........................................................................................................................................ 6
Receiver Front............................................................................................................................................. 7
Receiver Rear .............................................................................................................................................. 7
Product Information ..............................................................................8
Package Contents (ST12MHDLAN2K)................................................................................................ 8
Package Contents (ST12MHDLAN2R)................................................................................................ 8
Requirements ............................................................................................................................................. 9
Installation ..............................................................................................10
Optional Installation..............................................................................11
Using a Separate 3.5 mm Audio Source............................................................................................ 11
Connect the Devices to a Gigabit LAN Network............................................................................ 11
Using the RJ-11 to RS-232 Adapters................................................................................................... 12
Installing the IR Receiver and IR Blaster............................................................................................ 13
Mounting the Extender........................................................................................................................... 14
Installing the Feet ..................................................................................................................................... 15
Conguration..........................................................................................16
Rotary DIP Switch...................................................................................................................................... 16
Serial 1 Control Port ................................................................................................................................. 16

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Audio Embed Switch ............................................................................................................................... 16
Function Buttons....................................................................................................................................... 17
Rebooting the System............................................................................................................................. 18
StarTech.com Wall Control App ........................................................................................................... 19
General Navigation and Operation .................................................................................................... 19
Software Installation .............................................................................20
Connecting Transmitters and Receivers to the Software ........................................................... 21
Adjusting the IP Address and Subnet Masks .................................................................................. 22
Switching Your Remote Displays Between Video Sources ......................................................... 24
Conguring Your Remote Displays for a Video Wall Application............................................. 26
Adjusting Video Tear ................................................................................................................................ 33

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Product Diagram
Actual product may vary from photos
Transmitter Front
Transmitter Rear
F2
Cong.
Button F1 Link
Button
IR In
Port Audio
Out Port
DIP
Rotary
Switch
Serial 1
Control
Port
(RJ-11)
IR Out
Port
DC 12V
Power
Port
LAN
Port Video In
Port
Audio In
Port
LED Indicator
Locking
Screw
Audio
Embed
Switch
Reset
Button
Serial
2 Aux/
Ext
Port
(RJ-11)

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Receiver Front
Receiver Rear
DIP
Rotary
Switch
F2
Cong.
Button F1 Link
Button
IR Out
Port Audio In
Port
IR In
Port
Output
Resolution
Switch
DC 12V
Power
Port
LAN
Port Video In
Port Audio
Out
Port
LED Indicator
Locking
Screw
Reset
Button
Serial
2 Aux/
Ext
Port
(RJ-11)
Serial 1
Control
Port
(RJ-11)

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Product Information
Package Contents (ST12MHDLAN2K)
• HDMI Transmitter x 1
• HDMI Receiver x 1
• Universal Power Adapters (NA, EU, UK, ANZ) x 2
• Hardware Kit x 1
• Mounting Brackets x 2
• Mounting Screws x 8
• HDMI Locking Screws x 2
• Plastic Screwdriver x 1
• CAT5 Cable x 1
• RJ-11 to RS-232 Adapters x 2
• RJ-11 Cables x 2
• IR Blaster x 1
• IR Receiver x 1
• Foot Pads x 8
• User Manual x 1
Package Contents (ST12MHDLAN2R)
• HDMI Receiver x 1
• Universal Power Adapters (NA, EU, UK, ANZ) x 1
• Hardware Kit x 1
• Mounting Brackets x 2
• Mounting Screws x 8
• HDMI Locking Screws x 1

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• Plastic Screwdriver x 1
• CAT5 Cable x 1
• RJ-11 to RS-232 Adapters x 1
• RJ-11 Cables x 1
• IR Blaster x 1
• IR Receiver x 1
• Foot Pads x 4
• User Manual x 1
Requirements
For the latest requirements, please visit www.startech.com/
ST12MHDLAN2K or www.startech.com/ST12MHDLAN2R.
Installation:
• Phillips Head Screwdriver
• Writing Utensil
• Level
Display:
• HDMI Displays x 1 (per HDMI Receiver)
Devices:
• HDMI Video Source x 1 (per HDMI Transmitter)

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Installation
1. Set up an HDMI Video Source Device (e.g. computer) and
an HDMI Display Device in the desired location.
2. Position the HDMI Transmitter near the HDMI Video
Source Device you set up in step 1.
3. Connect an HDMI Cable from the HDMI Video Source
Device to the Video In Port on the back of the HDMI
Transmitter.
Note: If you are using a Locking HDMI Cable, use a Phillips
Head Screwdriver to remove the screw above the Video Port.
Connect an HDMI Cable to the Video In Port on the back of
the HDMI Transmitter, and re-insert the Locking Screw into
the Locking Screw Hole. Using the Phillips Head Screwdriver,
tighten the Locking Screw. Be careful not to over-tighten.
4. Position the HDMI Receiver near the HDMI Video Display
Device you set up in step 1.
5. Connect an HDMI Cable from the Video Out Port on the
back of the HDMI Receiver to the HDMI Video Display
Device.
Notes: To connect additional HDMI Receivers (sold sepa-
rately), repeat step 5.

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6. Connect a CAT5e/CAT6 Cable to the LAN Port on the back
of the HDMI Transmitter.
7. Connect the other end of the CAT5e/CAT6 Cable to the LAN
Port on the back of the HDMI Receiver.
Note: The cabling should not go through any networking
equipment (e.g. router, switch, etc.).
8. Connect the Universal Power Adapter to the DC 12V
Power Port on both the HDMI Transmitter and HDMI
Receiver and to an AC Electrical Outlet.
Optional Installation
Using a Separate 3.5 mm Audio Source
Audio In Port (Transmitter)/Audio Out Port (Receiver):
If you intend to add a separate 3.5 mm audio source
(Microphone) that can be embedded into the HDMI signal and
selected as the audio source:
1. Connect a 3.5 mm Audio Cable to the Audio In Port on the
HDMI Transmitter and the other end to the Audio Source
Device.
2. Connect a 3.5 mm Audio Cable to the Audio Out Port on
the HDMI Receiver and the other end to an Output Device.

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Audio Out Port (Transmitter)/Audio In Port (Receiver):
If you intend to transmit an audio signal from the HDMI
Receiver to the HDMI Transmitter.
1. Connect a 3.5 mm Audio Cable to the Audio In Port on the
HDMI Receiver and connect the other end of the cable to
the Audio Device.
2. Connect a 3.5 mm Audio Cable to the Audio Out Port on
the HDMI Transmitter and connect the other end of the
cable to the Output Device.
Connect the Devices to a Gigabit LAN Network
The HDMI Transmitter and HDMI Receiver can be used
in a video wall or point to multi-point or point-to-point
conguration over a Gigabit LAN.
1. Connect a CAT5e/CAT6 Cable to the LAN Port on the HDMI
Transmitter.
2. Connect the other end of the CAT5e/CAT6 Cable to a
Gigabit LAN hub, router or switch.
3. Connect a CAT5e/CAT6 Cable to the LAN Port on the HDMI
Receiver.
4. Connect the other end of the CAT5e/CAT6 Cable to a
Gigabit LAN hub, router or switch.
Note: Your router must support IGMP snooping. Please refer
to your network switch or router documentation to ensure
IGMP snooping is supported and enabled.
5. Verify that the image from your Video Source appears on
the Display Devices attached to the HDMI Receiver(s).

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Using the RJ-11 to RS-232 Adapters
The RJ-11 to RS-232 Adapter can be used to connect a Serial
Device to either the HDMI Transmitter or HDMI Receiver.
1. Connect an RJ-11 Cable to the Serial 2 Aux/Ext Port (RJ-
11) on either the HDMI Transmitter or HDMI Receiver.
2. Connect the other end of the RJ-11 Cable to the RJ-11 Port
on a Adapter.
3. Plug the RS-232 Connector on the Adapter into an RS-232
Port on the Serial Device.
Note: When connecting the RS-232 connector on the Adapt-
er to the Serial Device you may need to use an additional
serial cable or adapter.
Installing the IR Receiver and IR Blaster
The IR Receiver and IR Blaster can be connected to either the
HDMI Transmitter or HDMI Receiver.
HDMI Transmitter:
If the device receiving the IR signal is at the HDMI Receiver
side:
1. Connect the IR Receiver to the IR In Port on the front of the
HDMI Transmitter.
2. Position the IR Receiver where you’ll point your IR Remote
Control.

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If the device receiving the IR signal is at the HDMI Transmitter
side:
1. Connect the IR Blaster to the IR Out Port on the front of the
HDMI Transmitter.
2. Position the IR Blaster directly in front of the HDMI Video
Source’s IR Sensor (if you’re unsure, check the manual
of your HDMI Video Source to determine the IR Sensor
location).
HDMI Receiver:
If the device receiving the IR signal is at the HDMI Receiver
side:
1. Connect the IR Blaster to the IR Out Port on the HDMI
Receiver.
2. Position the IR Blaster directly in front of the device’s IR
Sensor (if you’re unsure, check the manual of your Video
Source to determine the IR Sensor location).
If the device receiving the IR signal is at the HDMI Transmitter
side:
1. Connect the IR Receiver to the IR In Port on the HDMI
Receiver.
2. Position the IR Receiver where you’ll point your IR Remote
Control.

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Mounting the Extender
Notes: StarTech.com is not responsible for any damages
related to the installation of this product.
Prior to mounting, please test the product’s port compatibil-
ity with all devices intended for use with this product.
1. Align the Mounting Bracket with the two Mounting Screw
Holes on the side of the HDMI Transmitter and/or HDMI
Receiver (two per side).
Note: Make sure that the large circular opening on the
Mounting Holes is at the bottom when the Mounting Brack-
ets are installed. This will ensure that you can properly mount
the bracket on the wall.
2. Insert the Mounting Screws through the Mounting Bracket
and into the Mounting Screw Holes on the side of the
HDMI Transmitter and/or HDMI Receiver.
3. Using a Phillips Head Screwdriver tighten the four
Mounting Screws, be careful not to over-tighten.
4. Before mounting the HDMI Transmitter and/or HDMI
Receiver make sure that the surface you are mounting
to is strong enough to support the weight of the HDMI
Transmitter and HDMI Receiver. It is recommended that
you mount the HDMI Transmitter and/or HDMI Receiver
onto a wall stud to provide the correct support.
5. Measure the distance between the Mounting Screw Holes
on the Mounting Brackets.

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6. Using a Level and a Writing Utensil, mark the distance
measured between the two Mounting Screw Holes on the
mounting surface.
7. Using a Phillips Head Screwdriver, screw the two
Mounting Screws into the surface, using the Mounting
Screw Hole locations marked in step 6 as a guide. Make sure
that you leave space between the head of the screw and the
wall.
8. Align the large circular holes on the Mounting Bracket with
the Mounting Screws.
9. Slide the HDMI Transmitter and/or HDMI Receiver down,
to lock the Mounting Brackets in place.
Installing the Feet
1. Remove the adhesive backing from the foot pads.
2. Align each of the foot pads with the four impressions on the
bottom of the HDMI Transmitter and HDMI Receiver.
3. While applying pressure, ax the feet to the bottom of the
HDMI Transmitter and HDMI Receiver.
Conguration
Rotary DIP Switch
The Rotary DIP Switch on the HDMI Transmitter and
connected HDMI Receiver(s) must be set to the same position/
channel for the devices to communicate.
• Use the at end of the Plastic Screwdriver (included) to
adjust the Rotary DIP Switch’s position.

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Serial 1 Control Port
The Serial 1 Control Port is currently not support by StarTech.
com. It is recommended that the StarTech.com Wall Control
app is used to congure the HDMI Transmitter and HDMI
Receiver(s).
Output Resolution Switch
The Output Resolution Switch is located on the HDMI
Receiver and has two settings:
Native:
Sets the video output to a max of 1080p @ 60Hz.
Scaling:
Set the video output to 720p @ 60Hz
Audio Embed Switch
The Audio Embed Switch is located on the HDMI Transmitter
and has two settings:

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Embedded:
Embeds external audio from the Audio In Port into the HDMI
signal.
HDMI:
Uses the audio from the HDMI signal.
Function Buttons
The F1 (Link) and F2 (Cong.) function buttons allow you to
perform the following functions:
HDMI Transmitter/HDMI Receiver F1 Button
Link/Unlink Video:
• Press the F1 Button once.
Factory Reset:
1. Power o the HDMI Transmitter or HDMI Receiver (unplug
the Universal Power Adapter from the HDMI Transmitter
or HDMI Receiver).
2. Press and hold the F1 Button.
3. Power on the HDMI Transmitter or HDMI Receiver
(plug the Universal Power Adapter back into the HDMI
Transmitter or HDMI Receiver).
4. Release the F1 Button after 17 seconds (the Power/Link
LED will ash green and blue).
5. For a second time power cycle the HDMI Transmitter or
HDMI Receiver.

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HDMI Transmitter/HDMI Receiver F2 Button
Graphic/Video Mode:
• Press and hold the F2 Button for 1 second.
Anti-Dither Adjustment Mode:
• Press and hold the F2 Button for 3 seconds.
EDID Copy (HDMI Receiver only):
1. Power o the HDMI Transmitter or HDMI Receiver (unplug
the Universal Power Adapter from the HDMI Transmitter
or HDMI Receiver).
2. Press and hold the F2 Button.
3. Power on the HDMI Transmitter or HDMI Receiver
(plug the Universal Power Adapter back into the HDMI
Transmitter or HDMI Receiver).
4. Release the F2 Button after 12 seconds (the Network Status
LED will ash yellow).
Rebooting the System
1. With the HDMI Transmitter or HDMI Receiver powered on,
Insert a pointed-tip object (e.g. pin) into the recessed Reset
Button.
2. Hold the recessed Reset Button until the HDMI Transmitter
or HDMI Receiver reboots.