Description
ST-NEHB100HCU3K 4K HDMI Extender is a professional 18Gbps HDBaseT 3.0 USB-C extender designed to transmit uncompressed HDMI, USB-C, USB 2.0, bi-directional IR, and RS-232 signals up to 100 meters over a single CAT6A cable.
Features
☆ Compliant with HDCP 2.3, 18Gbps video bandwidth
☆ HDBaseT 3.0 VS3000 chipset based design
☆ Support video resolution up to 4K2K@60Hz (YUV 4:4:4) as specified in HDMI 2.0b
☆ 4K60/4K30/1080P signal transmission distance up to 328ft/100m via a single CAT6A/7 cable (HDBT Standard Mode)
☆ 1080P 8bit signal transmission distance up to 492ft/150m via a single CAT6A/7 cable (HDBT Long Reach Mode)
☆ TX features with 1x HDMI input, 1x USB-C input, 1x HDBT output, 1x USB 2.0 host and 3x USB 2.0 clients
☆ RX features with 1x HDMI output, 2x USB 2.0 clients
☆ USB-C and HDMI signal inputs support auto or manual switching mode
☆ Auto switching supports HDMI 5V or signal detect selection
☆ USB-C supports DP-ALT mode for A/V, USB 2.0 data and power charging up to 60 watts
☆ HDR, HDR10, HDR10+, Dolby Vision LLM and HLG pass-through
☆ 4K to 1080p downscaling on HDMI output, no frame rate conversion
☆ Both TX and RX support analog audio de-embedding
☆ RS-232 signal pass-through and guest-mode control
☆ Support bi-directional IR signal pass-through and USB 2.0 signal transmission
☆ Advanced EDID management
☆ Each USB-A port provides power up to 5V/500mA
☆ Support bi-directional 24V POC with POC switch
☆ Compact design for easy and flexible installation
Package Contents
① 1x 18Gbps HDMI/USB-C over HDBaseT 3.0 Extender (Transmitter)
② 1x 18Gbps HDMI/USB-C over HDBaseT 3.0 Extender (Receiver)
③ 1x IR Blaster Cable (1.5 meters)
④ 1x IR Wideband Receiver Cable (1.5 meters)
⑤ 2x 3pin-3.81mm Phoenix Connector (male)
⑥ 4x Mounting Ear
⑦ 8x Machine Screw (KM3×4)
⑧ 1x 24V/3.75A Desktop Power Supply
⑨ 1x User Manual
Specifications
| Technical | |
| HDMI Compliance | HDMI 2.0b |
| HDCP Compliance | HDCP 2.3 |
| USB Compliance | USB 2.0 |
| Video Bandwidth | 18Gbps |
| Video Resolution | Up to 4K@60Hz 4:4:4 |
| Color Space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 |
| Color Depth | 8/10/12bit |
| HDR | HDR, HDR10, HDR10+, Dolby Vision, HLG |
| Audio Formats | HDMI/USB-C/HDBT: LPCM 2/5.1/7.1CH, Dolby Digital/Plus/EX, Dolby TrueHD, DTS, DTS-EX, DTS-96/24, DTS High Res, DTS-HD Master Audio, DSD 3.5mm Analog Audio: LPCM 2CH |
| Transmission Distance | HDBT Standard Mode (4K60/4K30/1080P): 328ft/100m (CAT6A/7) HDBT Long Reach Mode (1080P 8bit): 492ft/150m (CAT6A/7) |
| HDMI Cable Length | 4K60: 26ft/8m 4K24: 39ft/12m 1080P60: 50ft/15m |
| IR Level | 12Vp-p |
| IR Frequency | Wideband 20K–60KHz |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Connection | |
| Transmitter Input | 1x HDMI IN [Type A, 19-pin female] 1x USB-C IN [USB Type C, 24-pin female] |
| Transmitter Output | 1x HDBaseT OUT [RJ45, 8-pin female] 1x L/R OUT [3.5mm Stereo Mini-jack] |
| Transmitter Control | 1x IR IN [3.5mm Stereo Mini-jack] 1x IR OUT [3.5mm Stereo Mini-jack] 1x RS-232 [3pin-3.81mm phoenix connector] 1x SERVICE [Micro USB, 5-pin female] 1x USB HOST [USB Type B, 4-pin female] 3x USB Device [USB Type A, 4-pin female] |
| Receiver Input | 1x HDBaseT IN [RJ45, 8-pin female] |
| Receiver Output | 1x HDMI OUT [Type A, 19-pin female] 1x L/R OUT [3.5mm Stereo Mini-jack] |
| Receiver Control | 1x IR IN [3.5mm Stereo Mini-jack] 1x IR OUT [3.5mm Stereo Mini-jack] 1x RS-232 [3pin-3.81mm phoenix connector] 1x SERVICE [Micro USB, 5-pin female] 2x USB Device [USB Type A, 4-pin female] |
| Mechanical | |
| Housing | Metal Enclosure |
| Color | Black |
| Dimensions | Transmitter: 170mm [W] × 102mm [D] × 22mm [H] Receiver: 144mm [W] × 78mm [D] × 23mm [H] |
| Weight | Transmitter: 484g / Receiver: 318g |
| Power Supply | Input: AC 100–240V 50/60Hz, Output: DC 24V/3.75A (US/EU standards, CE/FCC/UL certified) |
| Power Consumption (Max) | 94.32W (Power supply from TX, 60W USB-C charging, POC to RX) 10.8W (Power supply from TX or RX, without USB-C charging) |
| Operating Temperature | 0°C ~ 40°C / 32°F ~ 104°F |
| Storage Temperature | -20°C ~ 60°C / -4°F ~ 140°F |
| Operating Humidity | 20% ~ 90% RH (non-condensing) |
Operation Controls and Functions
Transmitter
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED (Red) | Red LED indicates that the transmitter is powered on. |
| 2 | LINK LED (Green) | Light on: Transmitter and receiver are in good connection status. Light flashing: Transmitter and receiver are in poor connection status. Light off: Transmitter and receiver are not connected. |
| 3 | USB-C LED (Green) | When the USB-C IN port is selected as the video signal input channel, the USB-C LED will be on. |
| 4 | HDMI LED (Green) | When the HDMI IN port is selected as the video signal input channel, the HDMI LED will be on. |
| 5 | SELECT Button | Press this button to switch between HDMI and USB-C signal input. |
| 6 | MODE Switch | Switch to "STD": HDBT Standard Mode (factory default) — extends 4K60/4K30/1080P up to 100m via CAT6A/7. Switch to "LRM": HDBT Long Reach Mode — extends 1080P 8bit up to 150m via CAT6A/7. Note: In Long Reach Mode, USB 2.0 devices cannot be transmitted; only USB HID devices (mouse, keyboard) are supported. |
| 7 | EDID DIP Switch | Used for EDID setting: 00 – Copy display's EDID (factory default) 01 – 4K30 4:4:4 10 – 1080p60 4:4:4 11 – 1200p60 4:4:4 |
| 8 | USB Device Ports (1–3) | Three USB extension ports connected to mouse, keyboard, USB Flash Drive or other USB devices. Maximum power supply: 5V/500mA per port. |
| 9 | SERVICE Port | Firmware update and API command control port (Micro USB). |
| 10 | USB-C Port | USB Type C port with three functions: (1) USB-C video signal input, connected to source device. (2) USB-C host port for USB 2.0 signal transmission when USB-C is selected as input. (3) USB-C charging port — provides 60W charging only when TX is connected to the 24V/3.75A power supply. |
| 11 | USB HOST | USB host port, connected to PC. Follows the HDMI IN port — when HDMI IN is selected as input, USB 2.0 signal can only be output through this port. |
| 12 | HDMI IN | HDMI signal input port, connected to HDMI source device. |
| 13 | Link Signal Indicator (Green) | Light on: Transmitter and receiver are in good connection status. Light flashing: Poor connection status. Light off: Not connected. |
| 14 | Data Signal Indicator (Yellow) | Light on: Video signal transmission with HDCP encryption. Light flashing: Video signal transmission without HDCP encryption. Light off: No video signal transmission. |
| 15 | HDBaseT OUT | HDBaseT output port, connected to the HDBaseT IN port of the receiver with a CAT6A/7 cable. Used for all signal pass-through. |
| 16 | L/R OUT | Analog audio output port for audio de-embedding output. |
| 17 | IR IN | IR signal input port, connected with the IR Receiver cable. |
| 18 | IR OUT | IR signal output port, connected with the IR Blaster cable. |
| 19 | RS-232 | RS-232 serial port, used for RS-232 command pass-through and API command control. |
| 20 | DC 24V | DC 24V/3.75A power supply input port. Note: The extender supports POC — if either TX or RX is powered by the 24V adapter, the other unit does not require a separate power supply. |
| 21 | POC Switch | Use the switch to turn the POC (Power over CAT) function on or off. |
Receiver Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED (Red) | Red LED indicates that the receiver is powered on. |
| 2 | LINK LED (Green) | Light on: Transmitter and receiver are in good connection status. Light flashing: Poor connection status. Light off: Not connected. |
| 3 | IR IN | IR signal input port, connected with the IR Receiver cable. |
| 4 | IR OUT | IR signal output port, connected with the IR Blaster cable. |
| 5 | SERVICE Port | Firmware update and API command control port (Micro USB). |
| 6 | HDBaseT IN | HDBaseT input port, connected to the HDBaseT OUT port of the transmitter with a CAT6A/7 cable. Used for all signal pass-through. |
| 7 | Data Signal Indicator (Yellow) | Light on: Video signal transmission with HDCP encryption. Light flashing: Video signal transmission without HDCP encryption. Light off: No video signal transmission. |
| 8 | Link Signal Indicator (Green) | Light on: Transmitter and receiver are in good connection status. Light flashing: Poor connection status. Light off: Not connected. |
| 9 | HDMI OUT | HDMI signal output port, connected to HDMI display device such as TV or monitor. |
| 10 | USB Device Ports | Two USB extension ports connected to mouse, keyboard, USB Flash Drive or other USB devices. |
| 11 | L/R OUT | Analog audio output port for audio de-embedding output. |
| 12 | RS-232 | RS-232 serial port, used for RS-232 command pass-through and API command control. |
| 13 | DC 24V | DC 24V power supply input port. Note: The extender supports POC — if either TX or RX is powered by the 24V adapter, the other unit does not require a separate power supply. |
| 14 | POC Switch | Use the switch to turn the POC function on or off. |
IR Pin Definition
IR Receiver and Blaster pin’s definition 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.
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.
API Commands
The product supports API command control via RS-232 (3-pin phoenix connector) or the SERVICE port (Micro USB). Serial port protocol: Baud rate 115200, Data bits: 8, Stop bits: 1, Parity: none. End mark: <CR><LF>.
| Command Code | Function Description |
|---|---|
| help | Get the list of all commands |
| r fw version | Get firmware version |
| s reboot | Reboot the device |
| s reset | Reset to factory defaults |
| r status | Get system status (input, video, audio, HDCP, USB host, HDBT link, EDID) |
| s tx input x | Set TX input video. x = USBC, HDMI, AVMUTE, OFF |
| r tx input | Get TX input port selection |
| s tx autoswitch x | Set TX auto-switching on/off. x = ON, OFF |
| r tx autoswitch | Get TX auto-switching status |
| s tx autoswitch mode x | Set TX auto-switching mode. x = 0 (5V detection), 1 (signal detection) |
| r tx autoswitch mode | Get TX auto-switching mode status |
| s rx downscale x | Set RX downscaling mode. x = AUTO (auto by display), ON (force 4K to 1080p), OFF (bypass) |
| r rx downscale | Get RX downscaling mode |
| s tx audio mute x | Set TX de-embedding audio mute on/off. x = ON, OFF |
| r tx audio mute | Get TX de-embedding audio mute status |
| s rx audio mute x | Set RX de-embedding audio mute on/off. x = ON, OFF |
| r rx audio mute | Get RX de-embedding audio mute status |
| s edid x to y | Set input port EDID. x = USBC, HDMI, ALL. y = 00–11 (see EDID options: 00 DIP switch, 01 1080p Stereo, 02 WUXGA, 03 1080p HD Audio, 04 4K60 4:2:0 Stereo, 05 4K60 Stereo, 06 4K30 Stereo, 07 4K60 HD Audio, 08 4K60 HDR LPCM 6CH, 09 Copy from RX HDMI out, 10 User Defined 1, 11 User Defined 2) |
| r edid x | Get input port EDID. x = USBC, HDMI |
| r edid data x | Get input port EDID data. x = USBC, HDMI |
| s user edid x <y> | Set user defined EDID. x = 1 or 2, y = 256 bytes EDID data |
| r user edid x | Get user defined EDID. x = 1 or 2 |
Application Example
