LINK-MI LM-W150 User manual

User manual
Wireless HD Video Transmission System
Transmitter
Version 1.0
Receiver

Preface
1. Cautions
2. About
3. Installation
4. Operation instruction
5. Maintenance
6. Trouble shooting
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CONTENTS

Preface
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Thanks for purchasing our Long Range Wireless HDMI HD Video
Transmission Suite. Before using this product, read this user manual
carefully please. Follow the instructions to keep your safety and
avoid products damage. This user manual might be modified
irregularly because of updated products. And the manual is for
instruction only; All the statements in manual do not constitute any
explicit and implicit guarantees.

1. Cautions
Cautions
Do not use this product in the extreme hot, cold, dusty or humid environments
Avoid using sharp and hard objects to scrape the unit
Avoid dropping the product, or it may damage the hardware
Do not spill or get any liquid on the unit since it is not waterproof
Do not dismantle, assemble or alter the product arbitrarily
Icon and meaning
Careful, warning, dangerous, Pay attention to following items.
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2. About
Main features:
HDMI 1.3 supported
HDMI input and output
Resolution up to 1080p 60Hz, no latency and no compression
Supported software upgrade through mini USB
Maximum transmission distance is 150m, relinking range is 120m
5GHz ISM frequency band, maximum 10 frequency channels selectable by user key,
coexist with WIFI. Can be set to automatic frequency mode.
Support audio formats include Dolby True HD, DTS-master, etc
Support point to point network topology
Support DFS function
Support RS232 wireless transmission function
Signal indicators for DC power status, Video status and receiver RSSI
HD video data stream with AES-128 encryption
Each Rx is paired to a unique Tx in factory. 7-36V DC Wide range power voltage input,
12V/1A standard adaptor
Support ±8 kV ESD protection level (HBM, contact discharge)
Industrial metal case, delicate and artistic structure, integrated design and easy installation.
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Product model and standard
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2. About
The Long Range Wireless HDMI Transmission Suite utilize the most
advanced wireless video transmission technology, which can
achieve the broadcast-class level with no loss, no compression and
no latency of full HD HDMI signal transmission. The suite includes
one transmitter and one receiver, both provide HDMI interface. Both
transmitter and receiver have 5 stick antennas. The suite, equipped
with communication frequency selection buttons, providing 10
different frequency channels and can be set to automatic frequency
mode, also, it supports maximum 4 suites working simultaneously.
(point to point transmission, different image). The wireless suite
supports 7-36V wide range DC power input, and is equipped 12V/1A
standard adaptor. The suite can also sustain ±8 kV ESD (HBM,
contact discharge), the industry metal case and professional thermal
design would guarantee most robust reliability.

Performance and indicators:
Transmitter Receiver
HDMI Input（Type A Female）; 5 x Antenna
port(RP-SMA male）; DC input; mini USB interface
HDMI Output (Type A female); 5 x Antenna
port(RP-SMA male）; DC input; mini USB interface
7-36V DC 7-36V DC
<8.6W <7.5W
(L x W x H): 148x 90 x 20.5mm, exclude antennas
and battery buckle
(L x W x H): 148x 90 x 20.5mm, exclude antennas
and battery buckle
379g 349g
HDMI:1080p(60/59/50/30/25/24Hz)；
1080i(60/59/50Hz);720p(60/59/50Hz)；
576p(50Hz)； 480p(60/59Hz)
Panel:1920x1080,1768x992,1366x768,1280x768,128
0x720,1280x600,1176x664,1024x768,800x600,720x
576,720x480
/
/
I2S;PCM;SPDIF;AC-3;DTS;Dolby 5.1/7 /
I2S;PCM;SPDIF;AC-3;DTS;Dolby 5.1/7
/
Link-Green； Video-Yellow
OFDM 16QAM
Wireless RSSI-Blue (4 LEDs)；Video-Yellow
5.1-5.9GHz，configurable with China, North
American, Europe, etc
5.1-5.9GHz，configurable with China,
North American, Europe, etc
OFDM OOK
Maximum 13dBm Maximum 17dBm
/ -75dBm
20/40MHz 20/40MHz
Point to point
HDMI 1.3 standard；WHDI 1.0 standard；HDCP 1.2
protocols（HDMI 1.4 3D option）
HDMI 1.3 standard；WHDI 1.0 standard；HDCP 1.2
protocols（HDMI 1.4 3D option）
0-40°C(operating condition);-20~60°C(Storage)
FCC; CE. FCC; CE.
Interface
Supply voltage range
Power consumption
Size
Weight
Input Video Format
Output Video Format
Input Audio Format
Output Audio
Signal Indicator
Frequency Band
Modulation Mode
Transmission Power
Receiver Sensitivity
Broadcast mode
Transmission standard
Bandwidth
Temperature Range
Compliance
HDMI:1080p(60/59/50/30/25/24Hz)；
1080i(60/59/50Hz);720p(60/59/50Hz)；
576p(50Hz)； 480p(60/59Hz)
Panel:1920x1080,1768x992,1366x768,1280x768,128
0x720,1280x600,1176x664,1024x768,800x600,720x
576,720x480
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2. About
Point to point
0-40°C(operating condition);-20~60°C(Storage)

Product introduction
Transmitter:
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1 green LED for link indication
7-seg LED for frequency channel indicator
1 yellow LED for video indication
Frequency select button
Confirm button
Pairing button
Mini USB port
HDMI input port
DC power switch
DC input (7-36V)
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2. About
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2
4
5
3
7
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6
11
10
9
RS232 port
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RSSI(Wireless received signal strength indicator), 4 Blue LEDs for RSSI indication.
7-seg LED for frequency channel indicator
Frequency select button
Confirm button
1 yellow LED for video indication
Pairing button
Mini USB port
HDMI Output port
DC power switch
DC input (7-36V)
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5
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Product introduction
2. About
Receiver:
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5
3
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10
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RS232 port
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Packing list
user Manual
1 * user Manual
10 * 5G high gain antennas 2 * DC 12V/1A Adaptors
1*Receiver1*Transmitter
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2. About

Installation details and cautions
Transmitter side
Install 5 omni-directional and high efficiency antennas to Transmitter's antenna
connectors;
a)
b)
Transmitter
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3. Installation
Installing Bracket
There are 5 1/4-20 screw nuts in transmitter metal case, so the user can
choose appropriate threaded holes to fix transmitter on an installation bracket
or a camera;

c)
DC 12V/1A Adaptor
Attention: Please ensure that the receiver and transmitter's frequency point is the same.
d)
A
Transmitter
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Pluging a 12V/1A adaptor into the DC power socket, then switching the
transmitter on. The LED indicator would display the corresponding frequency
channel after power-on successfully;
Installation details and cautions
3. Installation
Transmitter side
Insert the video source to the transmitter's HDMI input port by HDMI cable
(male connector).

a)
b)
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Installation details and cautions
3. Installation
Receiver side
Install 5 omni-directional and high efficiency antennas to Receiver's antenna
connectors;
Receiver
Installing Bracket
There are 5 1/4-20 screw nuts in receiver metal case, so the user can choose
appropriate location threaded holes to fix receiver on an installation bracket or
a camera;

d)
DC 12V/1A Adaptor
A
Receiver
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Installation details and cautions
3. Installation
Receiver side
c) Pluging a 12V/1A adaptor into the DC power socket, then switching the receiver
on. The LED indicator would display the corresponding frequency channel after
power-on successfully;
connect a LED monitor or HD monitor with the HDMI port.
Attention: Please ensure that the receiver and transmitter's frequency point is the same.

Typical connection instruction
or
Adaptor
DVD、PC
Transmitter
Receiver
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3. Installation
Connect PC, DVD or camera HDMI output to transmitter HDMI input port, and connect HDMI
output port of the receiver to HDMI port of the HD monitor. Make sure all antennas, batteries and
video cable are equipped normally. See below figure:
Adaptor Fixed bracket
LED monitor

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4. Operation instruction
Getting start
After finishing all steps above, system is workable, follow the below steps.
a) Ensure the video source output of the camera is OK, and the HD monitor is power on
and switched to the connected video input channel;
b) Ensure all input, output HDMI cables are connected;
c) Ensure all antennas are installed, and the straight line distance is 3-5m between
transmitter and receiver, it is better to keep the antennas of Tx and Rx face to face for
best RF performance. see the below figure;
d) Ensure both the transmitter and receiver is installed batteries or DC input ports are
connected well.If connecting to outside 12V DC power sources, please make sure the
DC power correctly connected to the transmitter and receiver. Then toggle power switch
of transmitter and receiver to 'ON' respectively, then 'Power' indicator will light on. then
the receiver 7-seg LED frequency channel indicator will display the corresponding
frequency point showing that the power working normally;
e) Ensure the transmitter and receiver are set to the same frequency channel;
Note: this product support two different working mode, fixed frequency mode and
DFS mode, fixed frequency mode is 0-9; DFS mode is “A”. please choose “A” for the DFS
mode.
Transmitter Receiver

Searching.....
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4. Operation instruction
Getting start
f) When Tx is connected to video source, the “VIDEO” indicator will always light on. Before
the Tx and Rx wireless connection is established, the Tx and Rx's LINK indicator light
(green)will not light on. Only when the wireless connection is established and Rx detects
with normal video signal from Tx through wireless communication, then the “LINK”, “RSSI”
and “VIDEO”（yellow） indicator will light up. Before Rx outputs normal video signal, HD
monitor will show “Searching...” as the below picture showed;
g) The system will spend 20-30 seconds on constructing communication link, and the real
link period depending on the local condition. When wireless link is set up, “LINK” and “
VIDEO” indicator will light on and “RSSI” indicator shows the current received wireless
signal strength. When “VIDEO” indicator lighting shows receiving the normal video signal,
and then connected HD monitor will display the video and audio accordingly;
h) After Tx and Rx are connected normally, if the video outputs correctly from the PC, DVD
or camera, then Tx and Rx's “VIDEO”(yellow), “LINK”(green) and “RSSI”(Blue) indicators
will light on; if disconnected, then Tx and Rx's “VIDEO”(yellow), “LINK”(green) and “RSSI”
(Blue) indicators will not light on.
Note: RSSI is the strength of signal reception.

RSSI indicators
Signal strength indicator
light number
4
2-3
1or0
Strong
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4. Operation instruction
Getting start
I) For the best wireless transmission performance, the transmitter and receiver should kept
in the same height that more than 1.5m above the ground , and make sure no obstacles
between them. Moreover, it is better to keep the transmitter antennas face to face. Because
the system works in ISM band, the real transmission distance is also relevant to current air
electromagnetic environment.
The receiver will calculate received RF signal strength internally and 4“RSSI” LEDs will
indicate wireless signal power and quality. The user can observe the RSSI LED status to
know if the current wireless link is reliable or not:
Wireless signal
strength
Video quality
Middle
Weak
Best
Good
Noise is visible
Video

Frequency selection and configuration
00
0 Frequency point
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99 AA
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4. Operation instruction
The wireless suite can work in 5.1-5.9GHz frequency band and can be configured by
upgrading software flexibly to meet licensed or ISM band around global different regions,
users can press “CH” button to choose frequency point, then press “OK” button.
Attention: Please ensure Tx and Rx's communication frequency point is the same. If more
than one sets（maximum 4 sets）are working simultaneously，make sure the frequency
point of each pair is different.
See below frequency figure example:
9 Frequency point
1 Frequency point
DFS mode