Description
The ST-NPSB51H70 5x1 HDMI USB-C Presentation Switch is a professional 4K60 seamless presentation switch with three HDMI inputs, two USB-C inputs, one HDMI output, and one HDBaseT 3.0 output. The ST-NPSB51H70 5x1 HDMI USB-C Presentation Switch supports seamless switching, multiview display, USB KVM, Dante audio, EDID management, and HDBaseT transmission up to 70m for conference rooms and professional AV installations.
Features
☆ HDCP 2.2, DP 1.2 compliant, 18Gbps video bandwidth
☆ Video resolution up to 4K@60Hz 4:4:4, as specified in HDMI 2.0b
☆ Uncompressed 4K60 over HDBaseT 3.0 up to 132ft/40m via single CAT6A (F/FTP) cable
☆ Uncompressed 1080P & 4K30 over HDBaseT 3.0 up to 230ft/70m via single CAT6A (F/FTP) cable
☆ Up to 5 multiview display modes: Single / PIP / PBP / Triple / Quad
☆ 5x1 seamless switching (single screen) and fast switching (multiview) function
☆ Input: 2x USB-C, 3x HDMI, 1x Analog audio, 1x Dante® 2ch
☆ Output: 1x HDMI and 1x HDBaseT mirrored, 1x Analog audio, 1x Dante® 2ch
☆ USB-C supports DisplayPort Alt mode for A/V, USB 2.0, 100M Ethernet and 60W charging
☆ Local USB 2.0 KVM switching and extending USB 2.0 over HDBaseT 3.0
☆ Manual switching and automatic switching modes
☆ Analog/Dante® audio embedding and de-embedding
☆ Built-in 3x3 audio matrix with independent audio EQ/volume/delay adjustment
☆ CEC/RS-232 control external devices ON/OFF
☆ Advanced EDID management (16 modes including user-defined)
☆ Standard PoE power supply supported (TX_PSE, RX_PD)
☆ Flexible control via front panel buttons, IR remote, RS-232, TCP/IP or Web GUI
Package Contents
① 1x 5x1 Seamless Presentation Switch
② 1x HDBaseT Receiver
③ 1x IR Blaster Cable (1.5 metres)
④ 1x IR Wideband Receiver Cable (1.5 metres)
⑤ 2x 3pin-3.5mm Phoenix Connector (male)
⑥ 3x 5pin-3.5mm Phoenix Connector (male)
⑦ 4x Mounting Ear
⑧ 8x Machine Screw
⑨ 1x 24V/8A Desktop Power Supply & 1x AC Power Cord (1.5 metres)
⑩ 1x IR Remote
1x User Manual
Specifications
| Technical | |
| HDMI Compliance | HDMI 2.0b |
| HDCP Compliance | HDCP 2.2 |
| DP Version | DP 1.2 |
| Video Bandwidth | 18Gbps |
| Input Video Resolution | 480i up to 4K×2K@60Hz 4:4:4 |
| Output Video Resolution | Auto, 3840×2160p60/50/30/25, 4096×2160p60/50, 1920×1200p60RB, 1920×1080p60/50, 1360×768p60, 1280×800p60, 1280×720p60/50, 1024×768p60 |
| Color Space | RGB, YCbCr 4:4:4 / 4:2:2, YUV 4:2:0 |
| Color Depth | Input: 8/10/12-bit (8-bit at 4K60Hz 4:4:4); Output: 8-bit |
| HDR | Input supports HDR; output does not support HDR |
| IR Level | 12Vp-p |
| IR Frequency | Wideband 20K–60KHz |
| USB Bandwidth | TX USB Devices to TX Host/USB-C: 480Mbps RX USB Devices to TX Host/USB-C: 350Mbps RX USB Devices to RX Host: 480Mbps |
| Network Bandwidth (LAN & USB-C) | 100Mbps |
| ESD Protection | IEC 61000-4-2: ±8kV (Air-gap discharge), ±4kV (Contact discharge) |
| Transmission Distance | |
| HDBaseT | 4K60: 131ft/40m | 1080P & 4K30: 230ft/70m (CAT6A F/FTP) |
| TX Analog Audio | |
| Audio Formats | LPCM 2.0 |
| Audio Sample Rate | 48kHz |
| TX Line Input Level (Max) | 8.2dBu (2Vrms) @ balanced or unbalanced audio |
| TX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| Input Impedance | 10K Ohms |
| Output Impedance | 330 Ohms |
| Frequency Response | 20Hz to 20kHz (+0.5dB / -1dB) |
| Audio S/N Ratio | 93dB @ 2Vrms, 1kHz A-weighted |
| Audio THD+N | <0.1% @ 0dBV, 1kHz |
| Audio Output Sync Delay | 0 to 50ms |
| Dante® Audio | |
| Audio Formats | LPCM 2.0 |
| Audio Sample Rate | 44.1 / 48 / 88.2 / 96kHz at 24bit |
| Network Bandwidth | 100Mbps |
| Dante Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| Dante Audio Delay | 2 / 3 / 4 / 5 / 10ms |
| Dante Audio Output Sync Delay | 0 to 50ms |
| Dante Audio THD+N | <0.1% @ 0dBV, 1kHz |
| RX Analog Audio | |
| RX Line Output Level (Max) | 8.2dBu (2Vrms) @ balanced audio | 2.2dBu (1Vrms) @ unbalanced audio |
| Output Impedance | 330 Ohms |
| Transmitter (Switch) Connections | |
| Input | 3x HDMI INPUT [HDMI Type A, 19-pin female] 2x USB-C [24-pin female, 60W charging] 1x LINE IN [5pin-3.5mm phoenix connector] 1x DANTE [RJ45] |
| Output | 1x HDMI OUTPUT [HDMI Type A, 19-pin female] 1x HDBT OUTPUT [RJ45, PoE PSE] 1x LINE OUT [5pin-3.5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x LAN [RJ45] 1x USB HOST [USB Type B] 2x USB DEVICES [USB Type A] 1x IR IN [3.5mm stereo mini-jack, 12V level] 1x IR OUT [3.5mm stereo mini-jack, 12V level] |
| HDBaseT Receiver Connections | |
| Input | 1x HDBaseT IN [RJ45, PoE PD] 1x HDMI IN [HDMI Type A, 19-pin female] |
| Output | 1x HDMI OUT [HDMI Type A, 19-pin female] 1x LINE OUT [5pin-5mm phoenix connector] |
| Control | 1x RS-232 [3pin-3.5mm phoenix connector] 1x USB HOST [USB Type B] 2x USB DEVICES [USB Type A] 1x SERVICE [Micro USB] 1x IR IN [3.5mm stereo mini-jack, 12V level] 1x IR OUT [3.5mm stereo mini-jack, 12V level] |
| Mechanical | |
| Housing | Front panel: Aluminium; Rear case: Metal Enclosure — Black |
| Dimensions | Transmitter: 220mm [W] × 150mm [D] × 44mm [H] Receiver: 140mm [W] × 105mm [D] × 21.5mm [H] |
| Weight | Transmitter: 1.21kg | Receiver: 424g |
| Power Supply | Input: AC100–240V 50/60Hz; Output: DC 24V/8A (CE/FCC/UL certified) Receiver also supports PoE (through HDBaseT IN port) |
| Power Consumption (Max) | 150W |
| 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
Switch — Front Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | IR Window | IR signal receiving window for the IR remote control. |
| 2 | USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 / HDMI 5 Buttons | In single screen mode, press to select the corresponding input channel — button light turns on. In multiview mode, button lights indicate which inputs are active in the current layout. Press any input button to switch back to single screen mode. Button lights turn off after 1 second. |
| 3 | AUTO Button | Press to enable/disable auto switching. Button light is on when auto switching is active. |
| 4 | PRESET Button | Press to cycle through preset application scenes. Button light turns off after 1 second. Scenes are configured via Web GUI. |
| 5 | POWER Button | Press and hold for 3 seconds to enter standby mode (button light on). In standby mode, short press to power on (button light off). |
Switch — Rear Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | IR OUT Port | Connect the IR blaster cable. The IR signal originates from the HDBaseT Receiver IR IN port. |
| 2 | RS-232 Port | RS-232 serial port for RS-232 signal pass-through or controlling this product via RS-232 commands. Default baud rate: 115200 (8N1). TCP/IP port: 8000. |
| 3 | LAN Port | Connect to a router or switch for USB-C Internet access or Web GUI control. Default IP: 192.168.0.100. |
| 4 | RESET Button | Press and hold for 5 seconds to restore factory default settings. |
| 5 | IR IN Port | Connect the IR receiver cable — used for IR signal pass-through or controlling this product via IR remote. IR blaster pin 1: +, pin 2: −. IR receiver pin 1: IR Signal, pin 2: GND, pin 3: 12V. |
| 6 | LINE IN Port | Analog audio input (5pin-3.5mm phoenix connector). Balanced/unbalanced, max 2Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 7 | LINE OUT Port | Analog audio output (5pin-3.5mm phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 8 | DANTE Port | Dante® network port — connect to a network switch with other Dante® devices. Supports both receive and transmit. |
| 9 | HDBT OUTPUT Port | HDBaseT output port — connect to the HDBaseT IN port of the receiver with a CAT6A (F/FTP) cable. Supports PoE PSE to power the receiver. |
| 10 | HDMI OUTPUT Port | HDMI signal output — connect to an HDMI display device (TV, monitor) with HDMI cable. |
| 11 | Link Signal Indicator (Green) | On: Transmitter and Receiver linked. Flashing: Link poor. Off: Not linked. |
| 12 | Data Signal Indicator (Yellow) | On: HDMI signal with HDCP. Flashing: HDMI signal without HDCP. Off: No HDMI signal. |
| 13 | HDMI IN 3/4/5 Ports | HDMI signal input ports — connect to HDMI source devices (DVD, Blu-ray player) with HDMI cable. |
| 14 | USB-C 1/2 Ports | USB-C signal input ports supporting DisplayPort Alternate mode A/V and 60W charging. |
| 15 | HOST 3 Port | USB Host port — connect to PC for KVM functionality. |
| 16 | USB DEVICES Ports (1/2) | Two USB extension ports — connect to mouse, keyboard, USB camera or other USB devices. |
| 17 | DC 24V Port | Connect the included DC 24V/8A power adapter. |
HDBaseT Receiver Panel
| No. | Name | Function Description |
|---|---|---|
| 1 | Power LED (Red) | On when the receiver is powered on. |
| 2 | LINK LED (Green) | On: Good connection to transmitter. Flashing: Poor connection. Off: Not connected. |
| 3 | VIDEO LED (Green) | On: HDMI signal with HDCP. Flashing: HDMI signal without HDCP. Off: No signal. |
| 4 | HDBT LED (Green) | On when the HDBaseT IN port is selected as the signal input channel. |
| 5 | HDMI LED (Green) | On when the HDMI IN port is selected as the signal input channel. |
| 6 | SELECT Button | Press to toggle the signal input channel between HDBaseT IN and HDMI IN. |
| 7 | IR IN Port | Connect the IR receiver cable — IR signal will be sent to the IR OUT port of the transmitter. |
| 8 | IR OUT Port | Connect the IR blaster cable — IR signal originates from the IR IN port of the transmitter. |
| 9 | DEVICES Ports (1/2) | Two USB extension ports — connect to whiteboard, mouse, keyboard, USB camera or other USB devices. |
| 10 | SERVICE Port | Micro USB port for firmware update. |
| 11 | HDBaseT IN Port | HDBaseT input port — connect to the HDBT OUTPUT port of the transmitter with CAT6A (F/FTP) cable. Supports PoE PD to power the receiver. |
| 12 | Data Signal Indicator (Yellow) | On: HDMI signal with HDCP. Flashing: Signal without HDCP. Off: No signal. |
| 13 | Link Signal Indicator (Green) | On: Transmitter and Receiver linked. Flashing: Link poor. Off: Not linked. |
| 14 | HDMI IN Port | HDMI signal input — connect to HDMI source device with HDMI cable. |
| 15 | HOST Port | USB Host port — connect to PC for USB KVM over HDBaseT. |
| 16 | HDMI OUT Port | HDMI signal output — connect to HDMI display device (TV, monitor) with HDMI cable. |
| 17 | LINE OUT Port | Analog audio output (5pin phoenix connector). Balanced max 2Vrms / Unbalanced max 1Vrms. Balanced: L+, L−, GND, R+, R− | Unbalanced: L+, GND, R+ |
| 18 | RS-232 Port | RS-232 serial port for RS-232 signal pass-through or controlling external devices via the receiver. |
| 19 | DC 24V Port | Connect the DC 24V power adapter. Note: The receiver can also be powered by PoE through the HDBaseT IN port. |
IR Cable Pin Assignment
The pin assignment of the IR Receiver cable and IR Blaster cable is as below:
IR Remote Control
| Button / Group | Function |
|---|---|
| Power | Press to power on the switch or set it to standby mode. |
| VIDEO — USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 / HDMI 5 | Select input source in single screen display mode. Corresponding input button light on front panel lights blue. |
| VIDEO — ◄ / ► | Circularly select the previous or next input source in single screen mode. |
| VIDEO — AUTO | Enable/disable the auto switching function. |
| VIDEO — PRESET | Cycle through preset application scenes. |
| VIDEO — ⊞ (Multiview) | Short press to cycle through multiview modes: Single → PIP → PBP → Triple → Quad. |
| VIDEO — RES. | Cycle through output resolution options. |
| VIDEO — FREEZE | Freeze/unfreeze the screen. |
| VIDEO — RX HDBT | Select the HDBaseT IN port as the signal source input channel of the receiver. |
| VIDEO — RX HDMI | Select the HDMI IN port as the signal source input channel of the receiver. |
| AUDIO — USB-C 1 / USB-C 2 / HDMI 3 / HDMI 4 / HDMI 5 / WIN 1 / AIN / DANTE | Select the audio input channel for the HDMI/HDBT output. USB-C 1, USB-C 2, HDMI 3–5 and WIN 1 are audio input channels of Main In (HDMI/USB-C In). |
| AUDIO — MUTE | Mute/unmute the audio of Master Out. |
| AUDIO — VOL− / VOL+ | Decrease/increase the audio output volume of Master Out. |
Web GUI
Default IP address: 192.168.0.100. Connect the LAN port to a PC on the same network segment and enter the IP in a browser. Default credentials: Admin / admin and User / user. Web GUI pages: Information (model, version, IP, temperature), Status (input/output connection, resolution, color, HDCP), Preset (up to 5 scenes), EDID (16 modes per input, download/upload user-defined), Video (auto switch, fallback input, multiview layout, output resolution, HDCP), Audio (source select, input/output gain, GEQ, delay, mix), USB (follow video/manual/auto switch), RS-232 (baud rate, display auto power commands), Network (DHCP/Static, IP, gateway, domain), System (display control, CEC, PoE, fan speed, firmware update).
Domain name "PS51KVM-[MAC].local" can be used to log in to the Web GUI.
Dante® Web GUI
The switch has a built-in Dante® Web GUI. Connect the switch and PC to the same Ethernet switch, set the PC to obtain an IP address automatically, then open Dante® Controller to find the device IP. Enter that IP in a browser and log in with Admin / admin. The Dante® Web GUI provides Information, Network configuration, and System pages (firmware update, factory reset, reboot).
RS-232 Control
Connect the RS-232 port to a PC using a 3pin-3.5mm phoenix connector cable and an RS-232 to USB cable. Default baud rate: 115200 (8N1). TCP/IP port: 8000. Full ASCII command set covers system control, input/output switching, multiview layout, audio matrix, USB switching, CEC, preset management, and network configuration. Send the command "help" or "?" to retrieve the full command list.
Connection Diagram
