Lenkeng LKV424 Matrix Switcher User Manual
- June 12, 2024
- LENKENG
Table of Contents
Lenkeng LKV424 Matrix Switcher
Important Safety Instructions
- To prevent electric shock, please ensure that all apparatus is properly grounded.
- Do not place this apparatus near or over a radiator or heat register, or where it is exposed to direct sunlight.
- Place the device in a well-ventilated area, do not block any ventilation openings.
- Do not expose this apparatus to rain or place it near water. Any liquid that goes into the apparatus may cause a failure, fire, or electric shock.
- Do not place the device on an uneven or unstable surface. The device may fall resulting in a malfunction.
- Never insert anything metallic into the open parts of this apparatus. This may cause a danger of electric shock.
- If a three-party power supply is used, please ensure that the power supply specifications meet the product requirements.
Introduction
This is a 4 in 4 out HDMI matrix switch, it can switch 4 HDMI input signals to 4 HDMI displays as needed. It supports up to 4096×2160@60Hz HDR UHD resolution, and a variety of switching methods (IR remote control, buttons and RS232) flexibly match input and output devices; Any two of the four HDMI outputs support Auto Down-scaling. This unit is a reliable, ultra-high- definition video transmission solution, which is widely used in security monitoring, education and training, exhibition and broadcasting, command center and other scenarios.
Features
- Support 4 HDMI input signals and 4 HDMI output signals.
- Support up to 4096×2160@60Hz resolution and is backward compatible.
- Support HDR10.
- Support multiple switching mode: IR remote control, buttons, RS232.
- Support setting the EDID of the product.
- Any two of the four HDMI outputs support Auto Down-scaling.
- Lightning protection, surge protection, ESD protection.
Package Contents
-
Matrix Switch x1
-
Power Adapter 5V/1A x1
-
User Manual x1
-
Remote Control x1
-
Mounting Ear x2
-
Screw x6
-
Grounding Screw x2
-
Terminal block x1
Installation Requirements
- Source device: signal source with HDMI output interface, such as PS4, TV box, PC, etc.
- Display device: 4K or 1080P display device with HDMI input interface, such as TV, projector.
Panel Description
| 1 | Power indicator | When there is power, the indicator will light solid yellow |
|---|---|---|
| 2 | IR receiving window | Receive IR signal |
| 3 | RS-232 | Used for RS-232 command control |
| 4 | EDID DIP | Switch output display resolution |
| 5 | HDMI input indicator 1,2,3,4 | Corresponding to HDMI input 1,2,3,4 |
respectively
6| HDMI output Switch 1,2,3,4| Control the switch of HDMI output 1,2,3,4
respectively
7| DC5V| Connect with DC5V/1A power adapter
8| HDMI input 1,2,3,4| Connect with HDMI source device
9| HDMI output 1,2,3,4| Connect with HDMI display device
Remote Control
This remote control is just used for inputs or outputs switched.
Installation Procedures
Connection Diagrams
Connection Instructions
- Connect the source devices to the HDMI input ports with HDMI cables.
- Connect the display devices to the HDMI output ports with HDMI cables.
- Power on the devices to get started.
RS-232 control
Baud rate: 9600
Data bits: 8
stop character: 1
Parity: none
Operation mode one|
/
| HDMl1 input| HDMl2 input| HDMl3 input| HDMl4
input
---|---|---|---|---|---
HDMl1 output| PS11R| PS12R| PS13R| PS14R
HDMl2 output| PS21R| PS22R| PS23R| PS24R
HDMl3 output| PS31R| PS32R| PS33R| PS34R
HDMl4 output| PS41R| PS42R| PS43R| PS44R
HDMl1/2/ 3/4 output| PA1R| PA2R| PA3R| PA4R
Operation mode two| 
PAPXPXPXPX
PA is the command prefix, and the “X” of PX can be any number from 1 to 4. Pl
represents HDMI 1 source content for output, PZ represents HDMI 2 source
content for output, and so on to P4.
E.g . PAP3P1 P4P2 represents :
Output port HDMI 1 outputs content from input port HDMI 3 Output port HDMI 2
outputs content from input port HDMI 1 Output port HDMI 3 outputs content from
input port HDMI 4 Output port HDMI 4 outputs content from input port HDMI 2
Return value| PAXXXR is the command to read the status of all
interfaces; after sending the command, OKPXPXPXPX is displayed, where X is 1
to 4; if the command sent is incorrect, ERR appears.
Reset| Device restart
Recover| Restore device factory setting
BaudXX| Set baud rate value: 9600 (default), 19200
EDID settings
The product has 16 built-in EDID states, which can be set to switch the output resolution through the DIP switch. The DIP switch up means “1” and down means “O”.
DIP switch status
|
Resolution information
---|---
| 2| 3| 4
0| 0| 0| 0|
4K@60Hz 2CH
| 0| 0| 0| 4K@60Hz 5.1CH
0| | 0| 0|
4K@60Hz 7.1CH
0
| 0| | 0| 4K@60Hz HDR 7.1CH
0| 0| 0| |
4K@30Hz 2CH
| | 0| 0| 4K@30Hz 5.1CH
| 0| | 0|
4K@30Hz 7.1CH
| 0| 0| | 4K@30Hz HDR 7.1CH
0| | | 0|
1080p@60Hz 2CH
0
| | 0| | 1080p@60Hz 5.1CH
0| 0| | |
1080p@60Hz 7.1CH
| | | 0| 1080i@60Hz 2CH
| | 0| |
1080i@60Hz 5.1CH
| 0| | |
1080i@60Hz 7.1CH
0
| | | |
1080p@60Hz HDR 7.1CH
| | | |
- Read only the EDID that was first connected to the output
- Connect 4 outputs at the same time, only read the EDID of HDMI 1 output
FAQ
Q: No video or audio signal output on the displays?
A:
- Please check and make sure the matrix switch is connected well and powered.
- Please check and make sure all HDMI cables are connected}.
- Please check and make sure the input channel of displays are.
Q: Picture quality is not fluent and stable?
A:
- Please check and make sure all HDMI cables are connected
- Try to connect the source device to display device directly, or change to another source device for a try to see the picture quality.
- Please use high quality HDMI standard cable when HDMI 4K signal
Specification
| Items | Description |
|---|---|
| **HDMI version** | HDMl2.0 (HDR, YUV4:4:4) |
Compatible with HDCP2.2,HDCP1 .4
HDMI interface| 4 HDMI input, 4 HDMI output
Transmission rate| 18Gbps
Bandwidth| 600MHz
**Resolution| 480i@60Hz, 480p@60Hz, 576i@50Hz, 576p@50Hz,
720p@50/60Hz, 1080i@50/60Hz, 1080p@50/60Hz, 3840×2160@24/25/30/60Hz,
4096×2160@24/25/30/60Hz
****Audio format| LPCM7.1/DTS-HD/DTS-Audio/Dolby Digital plus/ Dolby
TrueHD 7.1/Dolby Digital 7.1CH/Dolby Atmos
RS-232| 3 Pin(GND/Rx/Tx), Baud rate 9600
Voltage| DC5V/1A
Power consumption| <4W
Working temperature| -20’C~60’C
Storage temperature| -30’C~70’C
Humidity| 0~90%RH(No Condensation)
Housing| Iron
Color| Black
Weight| 375g
Dimensions| 210.0(L)80.0(W)21.0(H) mm
****Protection| ** ESD protection
1a Contact discharge level 2 (±4KV) 1b Air discharge level 3
(±8KV)Implementation of the standard: IEC61000-4-2
Lightning protection, Surge protection
Disclaimer
The product name and brand name may be registered trademark of related manufactures. ‘” and ® may be omitted on the user manual. The pictures in this user manual are just for reference. The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. We reserve the rights to make changes without further notice to a productor system described herein to improve reliability, function or design.