Mainlink MK-V0107 User manual

版本：V3.0（2018.09）
S2
WI RE L E SS HD VI D E O T RA N S M I SS I O N
INTRODUCTION ／INSTRUCTION ／INSTALLATION GUIDE

版本：V3.0（2018.09）
Catalogue
1、Disclaimer----------------------------------------------------------------------1
2、Announcement ----------------------------------------------------------------1
2.1 Installation Warning----------------------------------------------------------1
2.2 Usages warning ---------------------------------------------------------------1
3、Product profile-----------------------------------------------------------------2
4、Description ------------------------------------------------------------------2
4.1 Transmitter --------------------------------------------------------------------2
4.2 Receiver -----------------------------------------------------------------------3
4.3 Accessory----------------------------------------------------------------------3
5、Wiring installment------------------------------------------------------------4
5.1 Carrier connection diagram-------------------------------------------------4
5.2 Receiver connection diagram-----------------------------------------------5
6、Usages -------------------------------------------------------------------------5
6.1 Channel settings --------------------------------------------------------------5
6.2 transmitter net pull address setting-----------------------------------------6
6.3Video record--------------------------------------------------------------------6
7、Working indicator-------------------------------------------------------------6
7.1 Transmitter indicator----------------------------------------------------------6
7.2 Receiver indicator-------------------------------------------------------------6
8、Specification parameter-------------------------------------------------------7
8.1 Video transmitter specification-----------------------------------------------7
8.2 Video receiver specification--------------------------------------------------7
9、Dimension diagram -----------------------------------------------------------8
10、FAQ (frequently asked question)------------------------------------------9

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Disclaimer
Thanks for purchasing S2. Please ensure that S2 is used in accordance with local laws and
regulations. Please read this disclaimer carefully before using. Once used, it shall be considered as an
endorsement and acceptance of the whole content of this statement. Please strictly follow the installation
steps in the instructions to operate and use the product. For any result or loss caused by improper use,
installation, modification,etc., ShenZhen MainLink Aero communication Technology Co., Ltd and its
affiliated companies will not hold any legal liability.
The copyright of this user manual is belongs to ShenZhen MainLink Aero communication Technology
Co., Ltd. All rights reserved. No reproduction shall be made in any form without permission.
Announcement
S2 is a wireless video transmission equipment, please pay more attention to the announcement to
prevent damage to terminal equipment and personal safety due to improper operation or usage.
1.Please use corresponding frequency of S2 in accordance with local radio regulations.
2.For initial usage, please make sure that the transmitter and receiver are connected correctly and the
antenna is installed correctly.
Installation Warning
1. Before Power On, user should install the antenna and make sure that the interface is
tightened.Otherwise, it will damage to the circuit.
2. Please make sure the transmitter and receiver supply the voltage within the prescribed voltage range.
Otherwise, it will damage to the circuit.
3. Be able to keep antenna of transmitter down vertically and without any obstacles to prevent
shortening communication distance because of blocking.
4. The antenna of receiver should be able to keep away from large metal parts.
5. Please be sure to use the right type of antenna.
6. Please pay attention to keeping the proper distance between the electronic equipment to minimize
the electromagnetic interference.
Usage warning
1. Please make sure that all connecting wires are fastened and connected correctly.
2. There is no entry into any foreign body (e.g. liquid,sand,etc.)
3. Skywalker S2 needs 15 seconds to power on, after that, can transmit video.

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4. Please ensure that there is no interference in the environment with the same frequency or high RF
power wireless transmission equipment, otherwise the receiver may not receive the video
normally.
5. If the signal of the Receiver is poor, try to change the direction of antenna（receiver）.
6. Using HDMI cable, LCD display and other accessories, select a better electromagnetic shielding
performance of the product as far as possible.
Product profile
S2 includes transmitter and receiver. With H.265 video decode, CODFM modulation technique etc.,
the device can achieve wireless real-time HD video transmission in high-speed situation.
Technological advantage:
H.265 decode, higher clarify;
transmission distance reaches 5~50km;
HDMI/AV transmit simultaneously with network camera;
Latency is low to 250ms;
Encryption make transmission more safe.
Component description
Transmitter
1、Channel switching switcher 6、HDMI interface
2、CVBS 7、Usage status indicator
C1：GND A1：power& usage status indicator
C2：video signal input A2：CH1 usage status indicator
3、IP interface A3：CH2 usage status indicator

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4、Antenna interface A4：CH3 usage status indicator
5、Power interface
B1：VCC（DC 9～28V）
B2：GND
Receiver
1、Antenna interface
2.1、Power indicator
2.2、Signal indicator
3、Channel switching switcher
4、Recording switch
5、Power input
B1、VCC（DC 9～28V）
B2、GND
6、USB interface
7、HDMI interface
Receiver antenna Transmitter antenna
Antenna ×2 Whip antenna ×1
Accessory
IP ×1 HDMI ×1
2pin ×2
5
1
2
3
4
6..
7

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Installation and wiring
Take Mutiple-rotor UAV for an example:
Connection diagram：
Fix the transmitter on the suitable
space of drone(by 3M strap) as follow,
and then install antenna vertical down.
Next, connect camera and transmitter
with HDMI cable (or with CVBS cable),
and then Power On.
Attention：
Please ensure to install the transmitter
antenna and fasten it before POWER ON.
Otherwise, it will damage the transmitter
Installation Example

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Receiver connection diagram
Connect the HDMI of receiver to LCD display.
And connect the antenna ,fasten it.
Installation notes：
1.Keep the antenna away from metal equipment of drone, and the antenna should have wide space
within 20cm to other objects to ensure efficient transmission;
2.Make a proper planning about frequency of all wireless equipment on UAV. Otherwise it will cause
the equipment to be unable to use normally .
Usage
S2 HD video transmitter achieves long distance HD video transmission, suitable for real-time
applications.
Channel setting
The transmitter and receiver are in the same channel by default. After the transmitter and receiver
are installed normally, HD video transmission can be realized.
To switch the channel, follow the steps as follows:
1.The product has two RF channel. Press “SW” on the transmitter, one of the signal indicator
CH1/CH2 lights. Green LED means the current channel is in use.
2. Press “SW” of receiver, the OLED will display current channel and
indicate the current signal strength. Since transmitter has two channels,
each channel support two videos input(HDMI and IP), the receiver can

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receive four videos: CH1-HDMI,CHI1-IPC, CH2-HDMI,CHI2-IPC.
Setting up the address of pulling stream at transmitter network
The network port input of the transmitter supports RTSP IP cameras. The default stream address of
the transmitter is rtsp://192.168.1.100:554/stream0, and the network flow can only be available when IP
address (192.168.1.100) and port (554) are both correct. There are two options to use the network flow:
1. Change the configuration of the IP camera to the stream address supported by our product;
2. Login to the background system of the transmitter through the web (the computer needs to be
connected to the transmitter through the network cable and the default IP of the transmitter is
192.168.1.168. For the connection, the IP segment of the computer also needs to be consistent with the
transmitter); modify the default stream address of IP cameras, as shown in the following chart. Except the
IP address, it is usually unnecessary to change the port and name. Afterwards, click to save, and then click
Reboot to restart the transmitter. Consequently, the video streaming can be accessible from the modified
pull-stream address. RTSP User Name and Password are only used when stream of the IP camera needs to
be authenticated.
Video record （Receiver）
Wireless HD video receiver support video recording. The steps are as follows:
1.Insert USB device, OSD will output “USB device is inserted”.
2.Start video recording by pressing receiver “REC”.
3.To stop recording, please press “REC” again. After finishing recording, video is automatically saved
to USB storage device.
4.Recording video is saved to USB storage device “HBPVR” document.

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LED indicator
Transmitter status Description
Receiver status Description
节Spot on the left flashes to show that it is recording
Received signal strength indicator
Current channel indicator
2.2
Press CH
Switch output clarify, display shows update clarify
Press REC
Display shows current SN number
A1
Power on: Green
Power on, device initialization
Green(blink)
Completed initialization, video source input not
detected
Working: Green(all the time)
Working properly, video source input
One of light : Green
Indicates current channel, corresponding to
CH1/CH2
PWR: A1 CH1: A2 CH2: A3
A2、A3
2.1

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Specification
Product HD video transmitter
Model
MK-V0106
Frequency
300~900MHz (can be customized*)
Antenna interface
50Ω SMA
Modulation
COFDM 2K
Subcarrier Modulation QPSK，16QAM
Video Bit Rate
3~12Mbps（can be customized）
Bandwidth
8MHz
Transmitter
Latency
About 250ms
Compressed Format
H.265
Resolution
1080P60 (downward compatibility)
Voltage
DC9~28V
Audio Input Interface
HDMI（type A）
Power Consumption
≤10W
5km@ Output power >500mW
Transmission Range Distance
10km@ Output power >1W
50km@ Output power >5W
Weight
About 98g
Dimension
82*62*24mm
Product HD video receiver
*Note: making the frequency is controlled by local Radio Management Committee, and by customer demand.
Model
MK-V0107
Frequency
300~900MHz (can be customized)
Antenna interface
50Ω SMA female head
Voltage
DC9~18V
Video input interface
HDMI（type A）
Reception Sensitivity
<-96dBm
Power Consumption
≤3.5W
Weight
About 116g
Dimension
87*63*24mm

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FAQ (frequently asked question)
Questions Possible reason Solution
OLED Output no
signal
●Unturned transmitter
●Check that whether the transmitter is
properly installed and powered on
●Abnormal decode of
transmitter, is closing down
●Close input video source, restart transmitter,
until signal of receiver is normal, then turn
on video source again
●Receiver channel and
transmitter channel are
inconsistent
●Switch receiver channel to transmitter same
channel
Video can not be
recorded or
recorded
properly
●IP address can not match with
transmitter
●Please refer to the usage method to reset IP
address
●Camera can not normally
connect to transmitter
●Check if the wire is loose, if any, using Ping
of transmitter (192.168.1.168) network cable
to test
Receiver LED
Output Input
Signal loss
●Transmitter has no source
input
●Please check the signal status of transmitter,
check HDMI interface again, at the
moment, check the camera
●HDMI connecting Video
source to transmitter is
disturbed
●Replace HDMI connection between video
source and transmitter to the shielding
line.(recommended original accessories)
●The compatibility problem of
transmitter and video source
●Change another input source
●The receiver does not switch
corresponding program
●Each channel of receiver has two program,
press CH in short time switch corresponding
program
●Abnormal signal of transmitter
●Check that whether transmitter and the

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Close range
communica
tion，video
is not
smooth
antenna connect fastening, if applicable,
test output power of transmitter is
normal or not
●Video format of video source
and transmitter does not
match
●Please try to use Gopro as video source
first, check whether it is caused by video
format, if no improvement, please check
the output power of transmitter
Communica
tion distance of
video is
shortened
●Antenna of transmitter does
not match or the antenna is
shielded
●Please ensure that the antenna of transmitter
is original antenna, whether there are
obstruction within 20cm around the
antenna or mental, if any, please change
the position of antenna
●Wireless transmission devices
interfere with other wireless
devices
●Close other wireless devices (data link), if
transmission distance is longer which
shows the interference exist, so please use
suitable frequency
●Severe occlusion between
transmitter and receiver
antenna
●Place the antenna of receiver on heights
until without any obstruction