ST-NMXB42LMV 4x2 Seamless Matrix Switcher with Multiview

The 4x2 seamless matrix switcher supports video resolutions up to 4K@60Hz 4:4:4 8bit deep 
color and HDCP 2.2 and 1.x compliant, it features multi-view function for multi sources can 
be displayed on single screen. This matrix switcher supports two HDMI™ outputs.
This matrix switcher features four HDMI™ inputs and each input with loop out port for 
cascading connection. 
This matrix switcher can be controlled via front panel buttons, remote control, API commands 
using RS-232 or TCP/IP. A Web server / GUI is built in that features A/V control, and input 
EDID management. The product is ideal for video conference rooms.

Features

☆ Video resolutions up to 4K@60Hz 4:4:4, as specified in HDMI™ 2.0b
☆ HDCP 2.2 and HDCP 1.x compliant
☆ 4x2 seamless switching (single screen) and fast switching (multiview) function
☆ Seamless switching without black screen or tearing screen (matrix mode)
☆ Multiple multiview display modes: Auto/Single/PIP/PBP/Triple/Quad view and customized 
    layouts
☆ Supports HDR10, HDR10+, HLG and Dolby Vision pass-through
☆ Supports HDR to SDR conversion
☆ Auto or manual switching mode
☆ Input: 4x HDMI™
☆ Output: 4x HDMI™ loop, 2x HDMI™, 1x Optical audio, 1x Analog audio
☆ Audio de-embedded
☆ Advanced EDID management
☆ Flexible control via front panel buttons, IR remote, RS-232, TCP/IP or Web GUI

 Package Contents

① 1x 4x2 Seamless Matrix Switcher
② 1x IR Remote Control 
③ 1x IR Wideband Receiver Cable (1.5m)  
④ 1x 3pin-3.5mm Phoenix Connector (male)
⑤ 1x 5pin-3.5mm Phoenix Connector (male) 
⑥ 2x Mounting Ear
⑦ 8x Machine Screw
⑧ 1x Multinational AC Power Cord (1.5m, optional)
⑨ 1x User Manual

 

Specifications

Technical
Video Bandwidth	18Gbps
HDMI Compliance	HDMI 2.0b
HDCP Compliance	HDCP 2.2 and 1.x
HDR	HDR, HDR10, HDR10+, Dolby Vision, HLG
Input Video Resolution	640x480p60Hz, 800x600p60Hz, 1024x768p60Hz, 1280x1024p60Hz, 1360x768p60Hz, 1440x900p60Hz, 1440x1050p60Hz, 1600x1200p60Hz, 480i59, 480p59, 576i50, 576p50, 720p50, 720p59, 720p60, 1080i50, 1080i59, 1080i60, 1080p23, 1080p24, 1080p25, 1080p29, 1080p30, 1080p50, 1080p59, 1080p60, 2160p23, 2160p24, 2160p25, 2160p29, 2160p30, 2160p50, 2160p59, 2160p60, 4096x2160p23.98Hz, 4096x2160p24Hz, 4096x2160p25Hz, 4096x2160p29.97Hz, 4096x2160p30Hz, 4096x2160p50Hz, 4096x2160p59.94Hz, 4096x2160p60Hz
Output Video Resolution	HDR Bypass Mode: Video passthrough from input. HDR to SDR Mode: 1024x768p60Hz, 1280x720p50/60Hz, 1280x800p60Hz, 1360x768p60Hz, 1920x1200p60Hz, 1080i50, 1080i60, 1080p50, 1080p60, 2160p25, 2160p30, 2160p50, 2160p60, 4096x2160p50Hz, 4096x2160p60Hz
Color Space	RGB, YCbCr_4:4:4, YCbCr_4:2:2, YCbCr_4:2:0
Color Depth	8/10/12-bit
Audio Formats (HDMI Passthrough)	LPCM, Dolby Digital/Plus/EX, Dolby True HD, Dolby Atmos, DTS, DTS-HD, DTS-HD Master Audio, DTS-96/24, DTS High Res
Audio Formats (Breakout)	Optical Out: Up to LPCM/Dolby/DTS 5.1CH Line Out: Only LPCM 2CH (sample rate 32~192kHz)
IR Level	12Vp-p
IR Frequency	Wideband 20K–60KHz
Transmission Distance	HDMI passive cable: 9.8ft / 3m
ESD Protection	IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge)
LINE Analog Audio Out
Dynamic Range	>90dB@0dBu, 1kHz A-weighted
Audio S/N Ratio	>90dB@0dBu, 1kHz A-weighted
Output Level (Maximum)	8.2dBu (2Vrms) @ balanced audio; 2.2dBu (1Vrms) @ unbalanced audio
Output Impedance	600 Ohm balanced; 300 Ohm unbalanced
Audio Output Delay	<1ms
Audio THD+N	<0.01% @ +4dBu, 1kHz
Frequency Response	20Hz to 20kHz (-/+0.5dB)
Connection
Input Ports	4x IN [HDMI Type A, 19-pin female]
Output Ports	1x OUT 1 [HDMI Type A, 19-pin female, single/multiview output] 1x OUT 2 [HDMI Type A, 19-pin female, single screen output] 4x LOOP [HDMI Type A, 19-pin female] 1x LINE AUDIO OUT [5pin-3.5mm phoenix connector] 1x OPTICAL AUDIO OUT [S/PDIF]
Control Ports	1x RS-232 [3pin-3.5mm phoenix connector, RS-232 API control] 1x LAN [RJ45 connector, TCP/IP and Web GUI] 1x SERVICE [USB-C with USB 2.0 only, 12-pin female, FW upgrade port] 1x IR EXT [3.5mm audio jack, IR IN 12V level]
Mechanical
Housing	Front panel: Aluminum; Rear case: Metal Enclosure
Color	Black
Dimensions	440mm [W] × 200mm [D] × 44mm [H]
Weight	2.65kg
Power
Power Supply	AC 100–240V 50/60Hz
Power Consumption	61.6W (Max)
Environmental
Operating Temperature	0°C ~ 40°C / 32°F ~ 104°F
Storage Temperature	-20°C ~ 60°C / -4°F ~ 140°F
Operating Humidity	20%~80% (relative humidity, non-condensing)
Storage Humidity	10%~90% (relative humidity, non-condensing)

Operation Controls and Functions

Front Panel

No.	Name	Function Description
1	LCD Screen	1.8-inch LCD panel, with 284×240 resolution and IPS. After powering on, the LCD screen will display the current input/output channel mapping of the matrix by default. Information such as EDID, output resolution, baud rate, and IP address can be displayed/set by pressing menu buttons.
2	IR Window	IR signal receiving window, receiving the IR remote signal to control certain functions of the machine.
3	LCD Screen Operation Buttons (each black button with blue indicator light)	MENU: Press the MENU button to enter the primary menu, with five primary items (INPUT SETTINGS / OUTPUT SETTINGS / AUDIO BREAKOUT / SETUP / FIRMWARE), which can view/set various functions of the matrix, including input EDID, output resolution/HDR/mute/stream, audio source/mute, LCD ontime, baud rate, network configuration, reboot, reset and firmware version. UP: Press the UP button to select the previous item. DOWN: Press the DOWN button to select the next item. LEFT: Left directional operation button. RIGHT: Right directional operation button. ENTER: Press the ENTER button to confirm and take effect. Notes: Pressing the MENU button will return to the previous menu. In any level menu, it will return to the initial display screen if no operation goes on within 10 seconds.
4	Matrix Operation Buttons (each black button with blue indicator light)	IN 1/IN 2/IN 3/IN 4: Input channel selection buttons. OUT 1/OUT 2: Output channel selection buttons. PRESET: Press the PRESET button to recall the presets circularly. FUNC: Function button. OUT + IN: Firstly press the OUT 1/2 button to select the output channel, then press the IN 1/2/3/4 button to select the input channel to complete the matrix mapping. For example, "OUT 1 + IN 1" indicates switching the input 1 signal source to output 1. FUNC + IN: Switch the input source to all outputs. For example, "FUNC + IN 1" indicates switching the input 1 signal source to all output ports. FUNC + FUNC + IN 1: View the IP address. FUNC + FUNC + IN 2: View the baud rate of the serial port. FUNC + FUNC + IN 3: Turn on signal management mode. FUNC + FUNC + IN 4: Turn off signal management mode. Note: The quick information will disappear automatically after being displayed for 3 seconds.
5	POWER Button (black button with red button light)	Short press the POWER button to power on the unit, the button light is off. Press and hold the POWER button for 3 seconds, the unit will enter the standby mode, and the red button light is on.
6	LOCK Button (black button with blue button light)	Press and hold the LOCK button for 3 seconds to lock front panel buttons (except the power button), the blue button light is on; Press it again to unlock, and the button light is off.
7	SERVICE Port	USB-C port with USB 2.0 only, used for firmware upgrade.

Rear Panel

No.	Name	Function Description
1	IN 1/2/3/4 Ports	INPUT: Four HDMI signal input ports, supporting auto switching, connected to HDMI source devices such as DVD or Blu-ray player with HDMI cable. LOOP: Four HDMI signal loop output ports, supporting bypass and downscale, connected to HDMI display devices such as TV or monitor with HDMI cable.
2	MULTIVIEW OUT 1 Port	HDMI signal output port, supporting single screen or multiview display.
3	SINGLE OUT 2 Port	HDMI signal output port, only supporting single screen display. Besides, it supports HDR bypass, and HDR to SDR conversion.
4	OPTICAL Port	Optical fiber audio output port, supporting audio de-embedding up to 5.1CH.
5	LINE Port	Analog audio output port, supporting balanced/unbalanced 2CH audio output (with a maximum output level of 2Vrms). Balanced connection method: L+, L-, GND, R+, R- Unbalanced connection method: L+, GND, R+
6	LAN Port	Ethernet port, used for TCP/IP and Web GUI control. • Green light on: The unit is linked with PC. • Green light off: The unit is not linked with PC. • Yellow light flashing: There is data transmission. • Yellow light off: There is no data transmission.
7	RS-232 Port	RS-232 serial port, with baud rate of 115200, used for upgrade and API commands transmission.
8	IR EXT Port	IR signal receiving port, with a default IR level of 12V, connected with the 12V IR Receiver cable. If the IR signal receiving window of the unit is blocked or the unit is installed in a closed area out of infrared line of sight, the IR receiver cable can be inserted to the "IR EXT" port to receive the IR remote signal.
9	GND	Connect the unit housing to the ground.
10	Power Switch	Press the power switch to turn on/off the power.
11	Power Port	Universal AC power outlet, connected to the 100-240V AC 50/60Hz power supply.

 IR Cable Pin Assignment

The pin assignment of the IR Receiver cable and IR Blaster cable is as below:

Note: When the angle between the IR receiver and the remote control is ± 45 °, the transmission 
distance is 0-5 meters; when the angle between the IR receiver and the remote control is ± 90 °, the transmission distance is 0-8 meters.  

LCD Display Navigation

Various functions of the matrix can be set through the operation of buttons on the front panel, and the corresponding content can be displayed on the LCD screen. The LCD display navigation consists of five primary menus: INPUT SETTINGS / OUTPUT SETTINGS / AUDIO BREAKOUT / SETUP / FIRMWARE.

Level 1	Level 2	Level 3	Level 4
INPUT SETTINGS	EDID	INPUT 1/2/3/4	1. Auto 2. Copy HDMI Out 1 3. Copy HDMI Out 2 4. 4K2K60_444 2.0CH 5. 4K2K60_444 5.1CH 6. 4K2K60_444 7.1CH 7. 4K2K30_444 2.0CH 8. 4K2K30_444 5.1CH 9. 4K2K30_444 7.1CH 10. 1080p60_444 2.0CH 11. 1080p60_444 5.1CH 12. 1080p60_444 7.1CH 13. 720P60_444 2.0CH 14. 1920x1200 2.0CH 15. 1680x1050 2.0CH 16. 1600x1200 2.0CH 17. 1440x900 2.0CH 18. 1360x768 2.0CH 19. 1280x1024 2.0CH 20. 1024x768 2.0CH 21. User Defined 1 22. User Defined 2
OUTPUT SETTINGS	RESOLUTION	OUTPUT 1/2	1. Auto 2. 3840x2160p60 3. 3840x2160p50 4. 4096x2160p60 5. 4096x2160p50 6. 3840x2160p30 7. 1920x1080p60 8. 1920x1080p50 9. 1920x1080i60 10. 1920x1080i50 11. 1280x720p60 12. 1280x720p50 13. 1360x768p60 14. 1280x800p60 15. 1920x1200p60RB 16. 1024x768p60
	HDR	OUTPUT 2	1. HDR Bypass 2. HDR to SDR
	MUTE	OUTPUT 1/2	1. ON 2. OFF
	STREAM	OUTPUT 1/2	1. ON 2. OFF
AUDIO BREAKOUT	SOURCE	OPTICAL / LINE	1. Follow HDMI Out 1 2. Follow HDMI Out 2 3. HDMI In 1 4. HDMI In 2 5. HDMI In 3 6. HDMI In 4
	MUTE	OPTICAL / LINE	1. ON 2. OFF
SETUP	LCD ONTIME	OFF / ALWAYS ON / 15 SECONDS / 30 SECONDS / 60 SECONDS
	BAUD RATE	4800 / 9600 / 19200 / 38400 / 57600 / 115200
	NETWORK	DHCP ON / DHCP OFF IP, Subnet Mask, Gateway, MAC
	REBOOT	Are you sure you want to REBOOT the system? Yes, press "FUNC" / No, press "MENU"
	RESET	Are you sure you want to RESET the system to default? Yes, press "FUNC" / No, press "MENU"
	—	—
FIRMWARE	BOOT FW V1.00.XX MCU FW V1.00.XX WEB GUI V1.00.XX LCD FW V1.00.XX

IR Remote

The matrix switcher supports two methods to receive the IR remote control signal.
Method 1: The IR window receives the IR remote signal. The furthest distance is 7 meters and the angle is ±45°.
Method 2: If the IR receiver window is blocked or the matrix switcher is installed in a closed area out of infrared line of sight, the IR receiver cable can be inserted to the "IR EXT" port. The furthest distance is 7 meters and the IR remote is directly faced to the IR receiver head.

Button / Group	Function Description
Power	Press this button to power on the unit or set it to standby mode.
OUT 1 Buttons
IN 1 / IN 2 / IN 3 / IN 4	Press to select input source for the OUT 1 port.
AUTO	Press this button to enable/disable the auto switching function in single screen display mode.
◄ ►	Press to circularly select the previous or next input source for OUT 1 in single screen display mode, or for WIN 1 in multiview display mode.
RES.	Press this button to cycle through the output resolution for the OUT 1 port.
PIP	Press this button to switch output 1 to PIP display mode.
PBP	Press this button to switch output 1 to PBP display mode.
TRIPLE	Press this button to switch output 1 to Triple display mode.
QUAD	Press this button to switch output 1 to Quad display mode.
OUT 2 Buttons
IN 1 / IN 2 / IN 3 / IN 4	Press to select input source for the OUT 2 port.
AUTO	Press this button to enable/disable the auto switching function.
◄ ►	Press to circularly select the previous or next input source for the OUT 2 port.
RES.	Press this button to cycle through the output resolution for the OUT 2 port.
Preset Buttons
PRESET 1 / 2 / 3 / 4 / 5 / 6 / 7 / 8	Press to recall the saved preset scenes.

Method 1: The IR window receives the IR remote signal. When using the IR remote, the 
furthest distance is 7 meters and the angle is ± 45°. The diagram is shown as below:

Method 2: If the IR receiver window of the matrix switcher is blocked or the matrix switcher is 
installed in a closed area out of infrared line of sight, the IR receiver cable can be inserted to 
the “IR EXT” port to receive the IR remote signal. The furthest distance of using the IR remote is 7 meters and the IR remote is directly faced to the IR receiver head. The diagram is shown as below.

 

9. Multiview

The OUT 1 port of the matrix switcher supports multiple multiview display modes:

Display Mode	Description
Auto	When the Auto mode is selected, the multiview display modes set through Web GUI will be recalled automatically.
Single	Single screen display mode.
PBP	Dual screen display modes, including Dual-LR and Dual-TB.
PIP	PIP screen display modes, including PIP-LT, PIP-LB, PIP-RT and PIP-RB.
Triple	Triple screen display modes, including Triple-L, Triple-R, Triple-T and Triple-B.
Quad	Quad screen display modes, including Quad-L, Quad-R, Quad-T, Quad-B and Quad-S.
Custom Layout	Five customized multiview display modes are supported.
Copy HDMI Out 2	Copy the display mode selected by the OUT 2 port.

Multiview window distributions are as following:

You can set/select multiview display modes for OUT 1 via Web GUI. For details, please refer 
to the Video and System interface operation of  “10. Web GUI Operation Guide”.
In addition, you can select multiview display modes for OUT 1 via IR remote control or 
RS-232 commands.

RS-232 Control Command

The product also supports RS-232 command control. Connect the RS-232 port of the product 
to a PC with a 3-pin phoenix connector cable and a USB to RS-232 serial cable. The 
connection method is as follows.

Then open a Serial Command tool on PC to send ASCII commands to control the product. 
The ASCII command list about the product is shown as below.

Connection Diagram

1: General Application

 

Cascading Application

 

 

 AV over IP Application