Mainlink S1 pro User manual

版本：V2.0（2018.09）
S1 pro
WI R E L ES S H D VI D E O TR A NS M I S S IO N
INTRODUCTION ／INSTRUCTION ／INSTALLATION GUIDE

版本：V2.0（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 example-------------------------------------------------4
5.2 Receiver connection example-----------------------------------------------5
6、Usages -------------------------------------------------------------------------5
6.1 Channel settings --------------------------------------------------------------5
6.2 Video record ------------------------------------------------------------------6
7、Working indicator-------------------------------------------------------------6
7.1 Transmitter indicator----------------------------------------------------------6
7.2 Receiver indicator-------------------------------------------------------------6
8、Specification ------------------------------------------------------------------7
8.1 Video transmitter specification-----------------------------------------------7
8.2 Video receiver specification--------------------------------------------------7
9、FAQ (frequently asked question)--------------------------------------------8

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Disclaimer
Thanks for purchasing S1pro. Please ensure that S1pro 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
S1pro 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 S1pro 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. S1 pro 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
S1 pro is the upgraded version of S1, includes transmitter and receiver. Adopted by H.264 video
decode, CODFM modulation technique etc., S1pro can transmit video in poor condition.
S1 pro Technological advantage:
Bandwidth reaches 8M,
Transmission distance reaches 5~10km;
Stronger anti-interference capability;
HDMI /AV input, HDMI output;
Light and small (transmitter);
More humanized HD Video transmission, OLED indicate current channel and signal strength;
Strong environmental adaptability, working temperature range is -40~+70℃.
*Different specification has different transmission distance, please order the corresponding product.
Description
Transmitter
1、HDMI input interface 4、Channel switching switcher
2、Signal indicator 5、Power input

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A1：Power&video signal indicator 6、Antenna interface（SMA）
A2：CH1 channel indicator
A3：CH2 channel indicator
A4：CH3 channel indicator
3、CVBS（AV）signal output interface
Receiver
1、USB interface 4、Antenna interface
2、Power interface 5、OLED display screen
B1: VCC（9V~28V）6、CH Channel switching switcher
B2:GND 7、REC Recording switch
3、HDMI Output interface
Receiver antenna Transmitter antenna
Antenna ×2 Whip antenna ×1
Or

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Accessory
HDMI cable ×1
2pin power line×2 2pin CVBS cable×1
Installation and wiring
Take Muti-rotor UAV for an example:
Carrier connection example：
Fix the transmitter on the suitable Station
of drone(by 3M strap), and then
install antenna with vertical down.Next,
camera and transmitter connect with HDMI
cable (or with CVBS cable),and then
connect to power.
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 example:
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 UAV, 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
S1 pro achieves long distance HD video transmission, suitable for high-real-time applications in
point-to point transmittion. Please order in specific demand.
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.
The steps of channel switching are as follows:
1. The product has three RF channel. Press “SW” on the transmitter, one of the signal indicator
CH1/CH2/CH3lights. 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. As shown on the right, the indicator shows current signal
quality.CH1 express current channel of receiver.

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Video record （Receiver）
Wireless HD video receiver support record video. The steps are as follows:
1.Insert USB device, HDMI of receiver 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.
LED indicator
Transmitter status Description
Receiver status Description
节 目 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(all the time)
Indicates current channel, corresponding to
CH1/CH2/CH3
PWR: A1 CH1: A2 CH2: A3 CH3: A4
A2、A3、A4
2.1

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Specification
Product HD video transmitter
Model
MK-V0105
Frequency
300~900MHz(can be customized）*
Antenna interface
50Ω SMA female head
Modulation
COFDM 2K
Subcarrier Modulation
QPSK，16QAM
Video Bit Rate
3~12Mbps
Bandwidth
8MHz
Transmission
Latency
About 300ms
Compressed Format
H.264
Resolution
1080P @60/50/30（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*2
Weight
About 90g
Dimension
80*58*25mm
Product HD video receiver
Note：*1:Making the frequency is controlled by local Radio Management Committee, and by customer demand.
*2The transmission distance 50km is belongs to customized product, please order in advance.
Model
MK-V0103B
Frequency
300~900MHz (can be customized）
Antenna interface
50Ω SMA female head
Voltage
DC9~18V
Video input interface
HDMI（type A）
Reception Sensitivity
<-95dBm
Power Consumption
≤3.5W
Weight
About 150g
Dimension
89*63*24mm

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FAQ (frequently asked question)
Questions Possible reason Solution
Transmitter LED
Output No signal
●Unturned transmitter
●Check 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 in
same channel
Receiver LED
Output Input Signal
loss
●Transmitter has no source
input
●Please check the signal status of transmitter,
check HDMI interface again and 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
●First, close the transmitter and video source,
after confirming HDMI connection is normal,
open video source
Close range
communication ，
video is not smooth
●Abnormal signal of transmitter
●Check whether transmitter and the 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
Communication
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

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●Wireless transmission devices
interfere with other wireless
devices
●Close other wireless devices (data link), if
transmission distance is longer, it might
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
Video can not be
recorded or
recorded properly
●USB storage device version
●Recommend USB3.0 to save video
document
●Compatibility of playing
software on the computer
●Please play the stored files by player of
windows