LINK-MI LM-VT800 User manual

Wireless HD Video Transmission Kit
Version:1.0
2020.03.29
6TFS.BOVBM
.PEFM-.75

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About this manual
Packing list
Brief introduction
Features
3
Mechanic information
TX
RX
Interface information
TX
RX
Installation instructions
TX
RX
Product specifications
OLED Screen Description
17
Trouble Shooting
19
Notices Description
Contents

The wireless transmission system can help a variety of video
transmission platform to achieve easy to carry,install fast,real
zero-wiring,plug&play,change the traditional site wiring and
get rid of cumbersome cabling,enhanced video transmission
system Flexibility.
RS232 cable * 1 Antenna*4
Double nut * 1
TX RX
FORWORD
- Please read this manual carefully before using this product
and retain it properly for future reference.
- If there is any doubt or difficulty in the process of product usage,
please feel free to contact us or the dealer.
- The company reserves the authority to amend the specification.
PACKING LIST
TX * 1
RX * 1 SDI cable * 1 RS232 cable * 1 Antenna*4
Power Supply(12V/2A)* 1
Double nut * 1
BRIEF INTRODUCTION
FEATURES
Wireless full HD video transmission;
Min 50ms low latency enables no waiting for wonderful
image receiving;
Reliable overvoltage protection for better ensuring the safety
of power supply;
Supports both HDMI and SDI interfaces for video input/output;
Full hardware design; plug & play; eliminates the hassle of
running wires, simple and convenient;
Transmission distance: up to 800 meters under the point-to-point
mode (with 5dBi antenna in open space).

V-mount
SDI cable * 1

RX
 
V-MOUNT
SDI IN
TALLY OUT
RS232
HDMI IN
DC IN 12V
SDI OUT
V-MOUNT TALLY IN
RS232
HDMI OUT
DC IN 12V
SONY F-Type
Battery Plate
5.8G Antenna Interface
Audio IN
OLED Screen
CH Button
Mode switch button
OK Button
LAN interface
SDI LOOP OUT
Power Switch
5.8G Antenna Interface
Audio out
OLED Screen
CH Button
Mode switch button
OK Button
LAN interface
Power Switch
SONY F-Type
Battery Plate
MECHANIC INFORMATION
TX

1 3
2
456
 
No. item Parameter Remark
CH Button（SW1 )
3S long press Frequency witching
Switch RTSP and point-
to-point mode
Valid only after
connected with RX
MODE Button
2. CH Button
3. OK Button
5. Tally out: Output 5V power supply
6. Audio in
Audio in
7. RS232
8. HDMI IN
HDMI IN HD Video input
NC NC
P12V Default set with out
( reserved for 12V voltage output)
1
2
NC
TXD
3
4
GND
RXD
5
6
GND
9. SDI LOOP OUT: SDI Loop output
10. SDI IN
SDI IN
Video source input, if SDI and HDMI are
input at the same time, priority SDI input ,
if not input at the same time, which one is
first input, which one is preferred.
11. DC IN: input power supply 12V/2A
12. LAN: External network port
INTERFACE INFORMATION
TX
1.
MODE Button（SW2 )
6S long press
3S long press
No. item Parameter Remark
6S long press, WPS pairing
Frequency witching
No. item Parameter Remark
4. OLED Screen
No. item Parameter Remark
External audio input and video source audio option,
Can not be superimposed on the audio,
use the function keys to switch
No. item Parameter Remark
NC
Data transmit TX
Data receive RX
No. item Parameter Remark
No. item Parameter Remark
OK Button
No. item Parameter Remark
1. Signal Icon
Indicates current working frequency
2. Frequency Icon
network connections

RX
 
1. MODE Button
5. Tally in: low level input is valid
Audio out LINE OUT output and SDI/HDMI video
source audio output at the same time
7. RS232
8. HDMI OUT
HDMI OUT Both the HDMI and the two SDI outputs simultaneously
9. SDI OUT
SDI OUT Video source output
No. item Parameter Remark
MODE Button 6S long press Switch RTSP and point-
to-point mode
CH Button
2. CH Button
3S long press
No. item Parameter Remark
6S long press, WPS pairing
Frequency witching
6. Audio out
No. item Parameter Remark
NC NC
P12V Default set with out
( reserved for 12V voltage output)
1
2
NC
TXD
3
4
GND
RXD
5
6
GND
No. item Parameter Remark
NC
Data transmit TX
Data receive RX
No. item Parameter Remark
No. item Parameter Remark
10. DC IN: input power supply 12V/2A
11. LAN: External network port
1 3
2
456
3. OK Button
No. item Parameter Remark
4. OLED Screen
OK Button
No. item Parameter Remark
1. Signal Icon network connections
Indicates current working frequency
2. Frequency Icon


INSTALLATION INSTRUCTIONS
TX
1. Install four 5dBi antennas on the transmitter
2. Connect transmitter to 12V Power-supply and turn on the power button,
OLED screen lighted up, the Signal and Frequency icons display,
Finished Starting-up )
Note: When transmitter SDI output, the SDI output can only be used
if SDI under loop output.
4. Audio input, transmitter connected to the microphone,
(MODE key press 3S can switch the internal and external sound).
12V power supply
Camera
SDI loop output
SDI cable connect
SDI monitor
HDMI
HDMI Cable
POO3
HD Player
HDMI
Connect the microphone
install antennas
4. For Transmitter inputs, either HDMI or SDI works, when the input is
SDI source, the SDI loop output(for local monitoring) is enabled."VIDEO"
icon will and only will display in OLED when a video input is properly
connected.

 
HDMI
HDMI
RX
1. Install four 5dBi antennas on the receiver
install antennas
HDMI Cable
TV
SDI cable connect
SDI cable connect
SDI monitor
12V power supply
2. Connect transmitter to 12V Power-supply and turn on the power button,
OLED screen lighted up, the Signal and Frequency icons display,
Finished Starting-up )
3. For Receiver outputs, all HDMI/SDI interface can output synchronously.
The Signal icon shows as a "X" in OLED when network between Transmitter
and Receiver disconnected or connecting; the Signal icon display properly
when network connected."VIDEO" icon will and only will display on OLED
when the video works properly.
4. Audio output, receiver connected to the audio output.

 
PRODUCT SPECIFICATIONS
TX
EVM
OFDM
40MHz
17dBm
≤-70dBm
50ms(min)
H.264
≤-28dB
TX
802.11n
WPA2/WPS
Max 300Mbps
Pairing Function Support
Frequency Hopping Manual
1080p 1080i 720p 576p，576i，480p，480i（up to 1080P/60Hz )， ，，
8-12W
7-17V
5190MHz，5230 MHz，5270 MHz，5310 MHz，5510 MHz，5550 MHz，
5590 MHz，5630 MHz，5670 MHz，5755 MHz，5795 Mhz
RX
EVM
OFDM
40MHz
17dBm
≤-70dBm
50ms(min)
H.264
≤-28dB
802.11n
WPA2/WPS
Max 300Mbps
1080p 1080i 720p 576p，576i，480p，480i（ )， ，， up to 1080P/60Hz
DC12V/2A
7-9W
7-17V
5190MHz，5230 MHz，5270 MHz，5310 MHz，5510 MHz，5550 MHz，
5590 MHz，5630 MHz，5670 MHz，5755 MHz，
5795 Mhz
Operating
Frequency
Antenna Mode 4*4 5dBi External antenna
Modulation Mode
Transmission power
Receiving Sensitivity
Bandwidth
Wireless Protocol
Network encryption
Network Mode point-to-point private protocol, RTSP protocol
Transmission Distance point-to-point Up to 800m LOS,
Transmission Delay
Transmission Rate
HDMI Protocol Support HDMI 1.3
Video Resolution
Audio Format PCM
Video
Compression Format
External Audio Support line-in audio input
IO port signal return Support Tally signal return
Interface
Standard HDMI input*1, SDI port*2 (1 input, 1 Loop Through),
232 interface*1, DC 5.5 power supply input*1,
CH button*1, MODE OLED*1, OK button*1,
LINE IN*1 , RJ45 interface *1, Tally socket*1,
Operating Power Supply DC12V / 2A （with Part 6677 )
Power Supply Range
Power Consumption
RX
Operating
Frequency
Antenna Mode 4*4 5dBi External antenna
Modulation Mode
Transmission power
Receiving Sensitivity
Bandwidth
Wireless Protocol
Network encryption
Network Mode point-to-point private protocol
Transmission Distance point-to-point Up to 800m LOS,
Transmission Delay
Transmission Rate
Pairing Function Support
Frequency Hopping Manual
HDMI Protocol Support HDMI 1.3
Video Resolution
Audio Format PCM
Video
Compression Format
External Audio Support line-in audio input
IO port signal return Support Tally signal return
Standard HDMI output*1, SDI output * 2 (2 channel simultaneous output),
power supply input*1, CH button*1, 232 interface*1
MODE OLED *1, OK button*1,RJ45 interface *1, Tally socket*1,
Operating Power
Supply
Interface
Power Consumption
Power Supply Range

VIDEO
RTSP
5630
2.Signal icon
3.VIDEO
4.Mode
5.Frequency
1. AUDIO
Video
Mode
OLED Screen Descriptionitem
Audio
Network connections
Indicates current working frequency
Remark
OLED SCREEN DESCRIPTION
TX
Icon Indication
Contents
Signal icon
X
Signal bar
VIDEO
Connecting
(Blank)
Network connection success
No Video input
Video source connected
successfully
VIDEO
RTSP Video RTSP Streaming
Point to Point Transmitting
Mode
5---- Indicates current working
frequency
Frequency
RX
Model Status
(Blank)
Icon Indication
Contents
Model Status
Signal icon
X
Signal bar
VIDEO
Connecting
(Blank)
Network connection success
No Video input
Video source connected
successfully
VIDEO
RTSP Video RTSP Streaming
Point to Point Transmitting
Mode
5---- Indicates current working
frequency
Frequency
(Blank)
Signal icon
(Blank) No Video input ()VIDEO Video source connected successfully
Frequency
(RTSP) Video RTSP Streaming Point to Point Transmitting
(Blank)
(Blank) No Audio input
Audio display, display of the headphone icon table, external audio input,
OLED SCREEN
 

 
TROUBLE SHOOTING
Solutions:
Power on transmitter.
Place the TX or RX onto the base and replace them erectly.
Move the receiver closer to the transmitter.
Reduce the number of solid walls between TX and RX.
Move the receiver closer to the transmitter.
Rematch the code of transmitter and receiver.
Power off other independent transmitter, place the
receiver away from the other sources of interference.
Connect the transmitter to video source by SDI/HDMI cable.
Power ON the video source.
Switch the Video source to SDI/HDMI output.
Remove and then re-plug the cable of transmitter
Reboot the transmitter.
Change the SDI/HDMI cable.
Switch the output video resolution to other modes.
Power on receiver.
Connect receiver to TV/Monitor via SDI/HDMI cable.
Switch TV/Monitor to SDI/HDMI input.
Remove then re-plug the SDI/HDMI cable.
Switch the TV/Monitor to normal operation mode.
Reboot the receiver.
Re-plug the cable of the receiver or TV/Monitor
Reboot the receiver
Please contact your retailer
OSD Information on TV
Image
Displaying “Link Connecting...” for long time
Transmitter is not electrified.
Transmitter or receiver is not placed erectly.
The transmitter and receiver are too far away.
Several solid wall partition TX and RX.
There are too many obstacles between TX and RX.
Haven't matched the code of TX and RX.
There is other transmitter which is under working
condition near the receiver.
No Video Signal received
Transmitter and video source are not connected.
The video source is turned OFF.
Video source were NOT switched to SDI/HDMI output.
Bad contact of cable of transmitter
Abnormal working of transmitter
Problem with cable between TX and video source
Player NOT support the output resolution format.
No signal input to Receiver or TV/Monitor
Receiver is turned OFF.
Receiver and TV are not connected.
TV/Monitor NOT switched to SDI/HDMI input.
No image appear on TV/Monitor
Bad contact of the cable of receiver or TV/monitor
TV/Monitor turn into standby mode
Abnormal working of receiver.
Bad contact of receiver or cable.
Abnormal working of receiver
Receiver failure
Troubles & Possible Reasons:
Solutions:Troubles & Possible Reasons:
Restart transmitter
Switch the transmitter to embedded audio
Video works but audio fails
Video input without audio
The transmitter in external audio input mode
Image
Network failure IP reset the PC and the transmitter at the same IP
network segment.
change to a compatible lan cableTally
IP is not on the same network segment
Lan cable is incompatible
Tally inoperation
High-electrical Level is effective to this product.
Pins definition should be exactly correct
9600Bd/s Baud rate default in 9600B/s
The definition of electrical level of user’s device is
different from this product.
Unable to send and receive data
RS232 transmission

 
NOTICES DESCRIPTION
1. Please do not plug or unplug the HDMI cables on transmitter&
receiver when the transmission kit are powered on during normally
using transmission kits.
2. Please connect the transmitter with video source and the receiver with
monitor/TV via HDMI cables before power on the transmission kit.
3. Please power off and reset the transmission kit when OSD indicates
Pairing Failed. If still failed to connect after reset, please redo pairing.
4. Please remove and replug the HDMI cable on receiver/transmitter
when failed to get video output(black screen) after changing video
source resolution. If still failed to obtain video after this operation,
please power off and reset the transmission kits.
5. Please power off and reset the kits if failed to connect for minutes
after frequency channel switched.
6. Please replug the HDMI and check TV/Monitor is working or standby
when transmission kits connected normally but failed to output right
video. If failed to output after this operation, please try to change the
display device.
7. Please switch frequency channel to avoid the jamming frequency
when presented image lag or mosaic, because this might be arisen by
frequency jamming. Switching Frequency operation, please refer to
the instruction of frequency switching in this manual.