Suntor ST20NPT User manual

1st
ST20NPT User Manual
TX RX
Contents
I. Disclaimer...............................................................................................................................................................................2nd
II. Precautions for integration................................................................................................................................................... 2nd
III. List of in-box items................................................................................................................................................................4th
IV.Interface Definition................................................................................................................................................................ 5th
4.1 TX Interface Definition............................................................................................................................................... 5th
4.2. RX Interface Definition..............................................................................................................................................6th
V. Operating Instructions & Steps..............................................................................................................................................7th
5.1. Make TX and RX and accessories ready....................................................................................................................7th
5.2. Connection..................................................................................................................................................................8th
5.3. Power on..................................................................................................................................................................... 8th
5.4. Definition of indicators...............................................................................................................................................9th
5.5. Start completed.......................................................................................................................................................... 9th
VI. Antenna Installation........................................................................................................................................................... 10th
6.1. Multi-rotor UAV........................................................................................................................................................ 10th

2nd
6.2. Fixed Wing UAV.........................................................................................................................................................11th
VII. Software Operation........................................................................................................................................................... 11th
7.1. Two ways for changing the parameters.................................................................................................................... 11th
7.2. How to use the software...................................................................................................................................... 12th
7.2.1. Login..............................................................................................................................................................12th
7.2.2. RF Configuration...........................................................................................................................................13th
7.2.3. RS1 Configuration.........................................................................................................................................15th
7.2.4. RS2 Configuration.........................................................................................................................................16th
7.2.5. IP New Network Configuration.................................................................................................................... 17th
7.2.6. RF New NET Configuration......................................................................................................................... 17th
SUNTOR ELECTRONICS CO., LIMITED
I. Disclaimer
SUNTOR is the registered trademark of SUNTOR ELECTRONICS CO., LIMITED. All product names and brands
in this manual are trademarks or registered trademarks of the Company. SUNTOR ELECTRONICS CO.,
LIMITED reserves all copyrights of the product and the manual. All the information must not be copied or
reproduced in any form without permission of SUNTOR. There may be semantic differences between
disclaimers of different languages. The Chinese version shall prevail in Chinese mainland, while the English
version shall prevail in other regions. Thank you for purchasing SUNTOR ST20NPT. Please use ST20NPT
according to local radio regulations. Before using, please carefully read this disclaimer. Once the product is
used, all the contents of the disclaimer will be regarded recognized and accepted. Please install and
operate the product in strictly accordance with the requirements of this manual. SUNTOR ELECTRONICS CO.,
LIMITED and its affiliates will not assume any legal responsibility for results or losses caused by improper
use, installation, assembly and modification (including the use of non-specified SUNTOR parts and
accessories, such as the radio power amplifier, antenna and SMA extension cord).
II. Precautions for integration
1) Be sure to use the parts provided by SUNTOR.
2) Before powering on please make sure the antenna are in good connection and not install or remove
the antennas with power on.
3) Given that the carbon fiber body and metal load may have shielding effects on antenna signals, they
should not be installed between the antenna and ground terminal. Keep the antenna on board free
from winding or blocking by obstacles. The antenna end should be vertically downward without
bending to prevent shortening communication distance and failure communication.
4) Antennas on board should be kept away from other radio antennas to avoid electromagnetic noise and
V2.0

3rd
interference. We recommend to make full use of data and video transmitting function of ST20NPT to
minimize the radio devices quantity on board.
5) Do not disassemble or modify SUNTOR ST20NPT. Any problem occur during installation, contact
SUNTOR or SUNTOR local branch office.
6) Keep appropriate distances between different electronic devices during installation to minimize the
electromagnetic interference.
7) Before using, please make sure all cables are in good connection and all components can work
properly.
8) After starting the product, the self-test indicators of ST20NPT will continuously blink for 30s and then
keep bright. Only after the video from the camera shown on the display, then you can confirm that the
device work properly now.
9) Check the surrounding environment to ensure there is no other 2.4GHz devices to cause interference.
10) If you use the Futaba remote controller, the controller should be adjusted into the French mode.
11) Adjust the Futaba controller into French mode as following steps:
[LINKAGE MENU]→FRQUENCY→ RTN b→ [AREA]→[FRANCE]
Or connect ST20NPT S1 serial port with trainer interface on back side of Futaba by TTL cable. And set the
Futaba RF as OFF. Through the S1 port uplink the PPM/SBUS signal.
12) Before using, please check the power of RX and TX. If the receiver power off, transmitter on board will
lose connection.
13) Adjusting RX antenna inclination can improve the signal strength and image quality.
14) The camera should be fully charged to ensure normal video output.
15) ST20NPT support video and duplex data communication. If the video stuck or stopped for more than
10s. It means the radio signal is weakened or the radio channel is narrowed. In this case, the aircraft
need to fly back to short the distance between TX and RX. Otherwise the TX will lose connection.
16) Please use good electromagnetic shielding accessories(such as HD displays, Network cables, etc.)
Notes: Improper operation of ST20NPT may cause personal injury or damage to properties. Please pay high

4th
attention to operation safety.
III. List of in-box items
On board *1
Ground terminal *1
TX antenna *2
RX antenna *2
DC to DC power cable *2
Network cable *2
TTL cable *2 (Length: 20cm)
TTL to RS232 * 2(Supply On Request)
USB TTL Cable*2
SMA Cable(Copper wire tinned shield semi-soft line) *2

5th
IV.Interface Definition
4.1 TX Interface Definition
A: DC7~18V input *1
B: Power on/off
C: RS232 serial port
D: S2 serial port(Audio)
E: Ethernet*1
F: WL indicator*1
G: Screw hollows *4 (for installation)
H: SMA antenna *1 (AUX Antenna)
I: S1 TTL serial port*1
J: Working station indicators * 6
K: SMA antenna *1 (Main Antenna)
L: HDMI mini*1(No available for ST20NPT)

6th
4.2. RX Interface Definition
4.2.1. RF Interface
RF: Standard SMA to connect with antenna or feeder cable
4.2.2. Ethernet Port
ETH：EZH 4P 1.5mm
4.2.3. Power Input Interface
DC: 3.5×1.35(Male) to 5.5×2.1(Female)
No
ETH Signal Definition
1
TX+
2
TX
3
RX+
4
RX

7th
4.2.4. Serial Port: : H 1.0mm 5P
V. Operating Instructions & Steps
5.1. Make TX and RX and accessories ready.
Besides the whole equipment we supply, you also need to make sure the IP Camera, display and power ready before
operating.
SH 5P NO.
Definition
1
TXD
2
RXD
3
3.3V
4
GND
5
No Definition

8th
5.2. Connection
Make the power cable, Ethernet cable, serial port cable and antennas in good connection.
(the serial port cable is for data links)
5.3. Power on
After checking all the connections are in good condition, turn on the the IP Camera, PC, transmitter and receiver. The
indicators will bright and the whole system starts work.

9th
5.4. Definition of indicators
5.4.1. TX Indicators Definition
After powering on, the devices will boot normally.
Then the indicators’ normal state will be as follows:
(1) Indicator light 1, 2, 3 and 6 will turn on in
green color.
(2) After one second, indicator light 1(green),
2(green), 3(green) and 6(blue) will start to
blink.
(3) After the startup completed, indicator light 1(green), 2(green), 3(green), 5(green) and 6(blue) will keep constant
bright. Indicator light 4(red) will blink frequently.
5.4.2. RX Indicators Definition
When the device begin to normally start work, all
indicators status is described as follow:
1) After powering on, light 1,2,3 turn green, light 6
turns blue and light 8 turns red.
2) After 1 second, light 1(Green), 2(Green), 3(Green)
and 6(Blue) start to blink. Light 5 (Green) and
8(Red) will keep constant light.
3) After the starting completed. Light 1(Green),
2(Green), 3(Green), 4(Red), 6(blue) and 8(Red) will
keep constant bright. By the way, when you use the the ETH1, 7 (Green) will blink frequently.
5.5. Start completed
The default IP address of the transmitter is 192.168.55.1 and the receiver is 192.168.55.2. You can match the IP camera
with the devices, then you can see the video in the screen which is transferred from the IP camera.
Remark: In UAV application, please make the connection successfully and the video show on ground station smoothly
then fly the UAV. About how to install the antenna on UAV please refer the following description.

10th
VI. Antenna Installation
6.1. Multi-rotor UAV
1) Using SMA metal shielded semi-flexible blue feeder cable provided by SUNTOR to connect the TX SMA
port with antenna.
2) The antenna needs to be
mounted vertically downwards.
3) The best installation location is
UAV ground bracket. With
antenna inside, the bracket can
only use fiberglass material.
4) If the ground bracket is
automatically retracted, the
antenna can be installed in the
lower part of the aircraft.
5) If the antenna is intercepted by
the camera or pod or the
loudspeaker, the video on RX
will appear image stuck or
mosaic.
SMA Feeder Cable