DigitalMedia™ 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
>> 4K60 4:4:4 video over standard Gigabit Ethernet
>> No latency penalty for real-time video performance
>> HDR (High Dynamic Range) video support (HDR10)
>> Dolby® TrueHD, Dolby Atmos®, DTS-HD®, DTS:X®, and
uncompressed 7.1 linear PCM audio support
>> HDCP 2.2 compliant
>> Configurable as an encoder or decoder
>> Dual onboard RJ45 LAN ports
>> Option for a fiber optic network connection via SFP port [2]
>> Enterprise-grade security
>> Two auto-switching HDMI® inputs and one HDMI output [1]
>> Built-in 4K60 4:4:4 scaling
>> Onboard video wall processing
>> Analog audio port configurable as a balanced stereo input
or output [5]
>> Analog audio embedding or de-embedding
>> Stereo downmixing of surround sound audio signals
>> Simultaneous distribution of stereo and surround sound signals
>> Audio breakaway capability [6,7]
>> Dynamic text overlay capability
>> RS-232 and IR control ports [9]
>> CEC device control gateway [9]
>> USB and KVM signal extension and routing [4]
>> Easy setup via built-in webpages
>> Fully-controllable via a Crestron® control system
>> Compact, surface-mountable form factor
>> Powered via local power pack or optional power injector [8]
>> 100-240V universal power pack included
Real-Time 4K60 Video Distribution
Engineered for demanding conference room and classroom applications,
DM NVX ensures real-time, full-motion 4K60 video performance for the
presentation of multimedia, videoconferencing, and live camera images.
DM NVX employs high-quality JPEG 2000 encoding using a patent-pending
technique that overlaps scaling and encoding latencies, achieving an
ultra-low end-to-end latency of 30 ms at 60 fps, so on-screen functions
such as mousing and game play are fluid and natural.
Encoder and Decoder in One
In a single compact device, the DM-NVX-351 is configurable to operate as
either a network AV encoder or decoder.
DigitalMedia™ NVX technology transports ultra high-definition 4K video
with 60 Hz frame rates and 4:4:4 color sampling over standard Gigabit
Ethernet. Support for HDR video (HDR10) and HDCP 2.2 ensures the
ultimate in picture quality and compatibility for all of today’s varied media
sources. Using standards-based Ethernet wiring and switches, DM® NVX
delivers a vastly scalable, high-performance solution for enterprise-wide
4K content distribution.[1]
• As an encoder, it allows a laptop computer, camera, or other media
source to be connected via HDMI® and then transmitted over
the network.[1]
The Crestron® DM-NVX-351 is a compact video encoder/decoder
designed to function as either a transmitter or receiver with the ability to
switch between the two modes programmatically via commands from a
Crestron control system. Featuring simple web-based control and
management, USB and KVM integration, and support for copper and fiber
LAN connectivity, the DM-NVX-351 offers a one-stop solution for any-sized
network AV installation.[2]
• The encoder/decoder mode can be switched on-the-fly via a control
system to provide a versatile, cost-effective presentation switching
solution using one integrated device.
The DM-NVX-351 includes all the features of the DM-NVX-350 with the
addition of surround sound to stereo downmixing. Refer to the “7.1
Surround Sound Audio with Downmixing” section below for details.
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• As a decoder, it receives the signal from a DM NVX encoder and feeds it
to a display device via the HDMI output. It can quickly and easily switch
between multiple encoders on the network alongside locally-connected
HDMI sources.[1]
2x1 HDMI® Auto-Switcher
The DM-NVX-351 includes two HDMI inputs. Switching between the
two inputs can be performed automatically using auto-switching mode,
manually using the onboard input select button, programmatically via a
Crestron control system, or through a computer using a web browser.
When used as a decoder mounted behind a typical conference room
display device, the HDMI inputs provide a convenient way to connect a
Crestron AirMedia® presentation gateway.[1]
DM-NVX-351 DM® 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
Top View
Bottom View
HDMI Output
When configured as a decoder, the DM-NVX-351’s HDMI output feeds
the decoded signal to the local display device (or any other device with
an HDMI input). Its built-in scaler ensures an optimal image, scaling the
encoded source resolution up or down to match the native resolution of the
display device. When used as an encoder, the HDMI output can be used to
feed a local display, confidence monitor, or audio system.[1,3]
Analog Audio Embedding or De-embedding
A balanced stereo analog audio port is included, which may be configured
as either an input or output. As an input, it allows a stereo audio source to
be connected and combined with the video signal from either HDMI input
or the incoming network video stream. As an output, it can provide a stereo
line-level signal to feed a local sound system or sound bar. The output
volume is adjustable via a control system or web browser.[5]
USB and KVM Integration
For a complete signal management solution, DM NVX supports the
extension of USB signals, which may be switched and routed alongside
the AV signal or separately via the control system. USB 2.0 host and device
ports are provided on each DM-NVX-351 box, allowing a USB mouse,
keyboard, or other device to be connected at one box and routed to a
computer or other host at another box. KVM switch functionality is a
natural application for this feature, but all types of USB peripherals are
supported including whiteboards, touch screens, game controllers,
cameras, mobile devices, headsets, and flash drives.[4]
Breakaway Audio
A DM NVX decoder may select and combine separate video and audio
signals from two different inputs, even two different encoders. There are
just two exceptions: A) signals may not be combined between the two
onboard HDMI inputs, and B) combining signals from two separate
encoders is limited to 2-channel stereo audio.[6,7]
USB signals can also be routed to other locations where a DM NVX
box does not exist using Crestron USB over Ethernet Extender Modules
(USB-EXT-DM). USB signals can be freely routed between DM NVX and
USB-EXT-DM units over Ethernet under the management of a Crestron
control system.
7.1 Surround Sound Audio with Downmixing
DM NVX supports the lossless transport of 7.1 surround sound audio
signals, including Dolby® TrueHD, Dolby Atmos®, DTS-HD®, DTS:X®,
and uncompressed linear PCM. The DM-NVX-351 includes the ability to
decode the incoming multichannel surround sound signal, whether from
the network or an HDMI input, and downmix that signal to stereo. The
stereo downmix signal is automatically routed to the onboard analog
output [4], while the HDMI output can be configured to output either stereo
or multichannel. As an encoder, the DM-NVX-351 distributes both stereo
and multichannel signals simultaneously over the network, allowing either
signal to be selected at any decoder on the network.
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Text Overlay
The ability to display dynamic or fixed text on screen provides a means
to label the video source or display special instructions, schedules,
announcements, alerts, and other messaging.
Video Wall Processing
A video wall composed of up to 64 individual displays can be configured
using multiple DM-NVX-351 units. Each unit provides fully-adjustable zoom
capability and bezel compensation to accommodate a range of video wall
configurations and display types. One DM-NVX-351 is required per display,
supporting configurations of up to eight wide by up to eight high.
Copper or Fiber LAN Connectivity
The DM-NVX-351 includes two RJ45 1000Base-T LAN ports. Either port
may be used as the primary LAN connection, allowing the other to be used
to provide a network connection for the display, AirMedia gateway, or other
local device(s). These ports may also be used to daisy-chain multiple units
feeding a single-source video wall or individual displays all showing the
same video image. Port 1 is also capable of receiving power from a
Crestron power injector (DM-PSU-ULTRA-MIDSPAN).[8]
DM-NVX-351 DM® 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
Connection to a fiber optic network is facilitated by inserting an appropriate
SFP transceiver module (Crestron SFP-1G series [2]) into the SFP port on the
DM-NVX-351. A selection of modules is offered to accommodate various
multimode and single-mode fiber types.
Session Initiation: Multicast via RTSP
Copy Protection: HDCP 2.2
Enterprise-Grade Security
A secure AV network ensures its own reliability by protecting the integrity
of the content being delivered and the privacy of the personnel accessing
it. Employing advanced security features and protocols like 802.1x
authentication, Active Directory credential management, PKI certification,
AES encryption, TLS, SSH, and HTTPS, DM NVX delivers a true enterprisegrade network AV solution engineered to fulfill the demanding IT policies of
corporate, university, medical, military, and governmental clients. DM NVX
runs on a dedicated AV network, with fully-managed access to, or isolation
from, the customer’s LAN or the Internet.
Input Signal Types: HDMI w/HDR10, Deep Color, and 4K60 4:4:4
support [1,10] (Dual-Mode DisplayPort and DVI compatible [11])
Output Signal Types: HDMI w/HDR10, Deep Color, and 4K60 4:4:4
support [1] (DVI compatible [11])
Switcher: 2x1 auto-switching, Crestron QuickSwitch HD™ technology
Scaler: 4K60 4:4:4 video scaler with motion-adaptive deinterlacing,
intelligent frame rate conversion, Deep Color support, HDR10 support,
widescreen format selection (zoom, stretch, maintain aspect-ratio, or 1:1),
video wall processing up to 8 wide x up to 8 high, static or dynamic
text overlay
Copy Protection: HDCP 2.2
Device Controller
The DM-NVX-351 includes built-in RS-232 and IR control ports for control
of the connected display, camera, and other devices under the management
of a control system. Additional control capability is afforded by harnessing
the CEC (Consumer Electronics Control) signal embedded in HDMI. Through
its Ethernet connection to the control system, the DM-NVX-351 provides a
gateway for controlling the display and source devices right through their
HDMI connections, potentially eliminating the need for any dedicated serial
cables or IR emitters.[9]
Web-Based Setup
Setup of the DM-NVX-351 is accomplished using a computer web browser.
Full control and monitoring of the device is enabled through integration
with a Crestron control system.
Low-Profile Installation
The DM-NVX-351 mounts conveniently to a flat surface or rack rail, and
fits easily behind a flat panel display, above a ceiling-mounted projector,
beneath a tabletop, or inside a lectern, AV cart, or equipment cabinet. All
connections and LED indicators are positioned on the top and bottom,
offering optimal access and visibility for a clean, serviceable installation.
Power is provided using the included 100-240V universal power pack or an
optional power injector (Crestron DM-PSU-ULTRA-MIDSPAN).[8]
Please refer to the DigitalMedia Resources Webpage at
http://www.crestron.com/dmresources/ for additional design tools and
reference documents.
Video Compression: JPEG 2000
Video Resolutions: Up to 4096x2160@60Hz (DCI 4K60), 4:4:4 color
sampling, HDR10 and Deep Color support
Audio Formats: Primary multichannel (up to 8-channel LPCM or encoded
HBR 7.1 surround sound), secondary 2-channel LPCM
Bitrates: 100 to 990 Mbps
Streaming Protocols: RTP, RTSP, SDP
Container: MPEG-2 transport stream (.ts)
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Maximum Resolutions: Scan
(Input only)
4096x2160 DCI 4K
3840x2160 4K UHD
24 Hz
36 bit
30 Hz
36 bit
60 Hz
36 bit
60 Hz
24 bit
2560x1600 WQXGA
60 Hz
36 bit
1920x1080 HD1080p
60 Hz
36 bit
1920x1080 HD1080i
30 Hz
36 bit
NOTE: Common resolutions are shown; other custom resolutions are
supported at pixel clock rates up to 600 MHz
Input Signal Types: HDMI (Dual-Mode DisplayPort compatible [11]),
analog stereo [5]
Output Signal Types: HDMI (multichannel pass-through or 2-channel
downmix), analog stereo (2-channel downmix) [5]
Digital Formats: Dolby Digital®, Dolby Digital EX, Dolby Digital Plus,
Dolby TrueHD, Dolby Atmos, DTS®, DTS-ES, DTS 96/24, DTS-HD High Res,
DTS-HD Master Audio, DTS:X, LPCM up to 8 channels
Analog Formats: Stereo 2-Channel
Analog-To-Digital Conversion: 24-bit 48 kHz
Digital-To-Analog Conversion: 24-bit 48 kHz
Analog Performance: Frequency Response: 20 Hz to 20 kHz ±0.5 dB;
S/N Ratio: >95 dB 20 Hz to 20 kHz A-weighted;
THD+N: <0.005% @ 1 kHz;
Stereo Separation: >90 dB
Analog Volume Adjustment: -80 to +20 dB
DM-NVX-351 DM® 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
Ethernet: 10/100/1000 Mbps, auto-switching, auto-negotiating,
auto-discovery, full/half duplex, TCP/IP, UDP/IP, CIP, DHCP, SSL, TLS, SSH,
SFTP (SSH File Transfer Protocol), IEEE 802.1x, IPv4, HTTPS web browser
setup and control, Crestron control system integration
USB: USB 2.0 host or device signal extension; USB 2.0 computer console
(for setup)
RS-232: 2-way device control and monitoring up to 115.2k baud with
hardware and software handshaking (via control system); computer
console (for setup)
IR/Serial: 1-way device control via infrared up to 1.1 MHz or serial
TTL/RS-232 (0-5 Volts) up to 19.2k baud (via control system)
DM NVX (via Ethernet): HDCP 2.2, AES, RTP, RTSP, SDP, ONVIF, IGMPv3 (v2
coming soon), SMPTE 2022
NOTE: Supports management of HDCP and EDID; supports management
of CEC between the connected HDMI devices and a control system
USB DEVICE: (1) USB Type B female;
USB 2.0 device port;
USB signal extender port for connection to a computer or any other USB
2.0 host [4]
USB HOST: (1) USB Type A female;
USB 2.0 host port;
USB signal extender port for connection of a mouse, keyboard, or any other
USB 2.0 device [4];
Available Power: 500 mA at 5 Volts DC
LAN 1: (1) 8-pin RJ45 female;
10Base-T/100Base-TX/1000Base-T Ethernet port;
PD (powered device) port compatible with Crestron
LAN 2: (1) 8-pin RJ45 female;
10Base-T/100Base-TX/1000Base-T Ethernet port
LAN 3: (1) SFP port;
Accepts one Crestron SFP-1G series SFP transceiver module [2]
HDMI OUTPUT: (1) 19-pin Type A HDMI female;
HDMI digital video/audio output (DVI compatible [11]) [1]
HDMI INPUT 1 – 2: (2) 19-pin Type A HDMI female;
HDMI digital video/audio inputs [1];
(DVI & Dual-Mode DisplayPort compatible [11])
AUDIO I/O: (1) 5-pin 3.5 mm detachable terminal block;
Balanced/unbalanced stereo line-level audio input or output [5];
Input Impedance: 24k Ohms balanced/unbalanced;
Maximum Input Level: 4 Vrms balanced, 2 Vrms unbalanced;
Output Impedance: 200 Ohms balanced, 100 Ohms unbalanced;
Maximum Output Level: 4 Vrms balanced, 2 Vrms unbalanced
CONSOLE, SERIAL: (1) 8-pin RJ45 female;
RS-232 computer console port (for setup)
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CONSOLE, USB: (1) USB Type B female;
USB 2.0 computer console port (for setup)
IR 1 – 2: (1) 4-pin 3.5 mm detachable terminal block;
Comprises (2) IR/Serial ports [9];
IR output up to 1.1 MHz;
1-way serial TTL/RS-232 (0-5 Volts) up to 19200 baud
COM: (1) 5-pin 3.5 mm detachable terminal block;
Bidirectional RS-232 port [9];
Up to 115.2k baud, hardware and software handshaking support
24VDC 2.0A: (1) 2.1 x 5.5 mm DC power connector;
24 Volt DC power input;
PW-2420RU power pack included
G: (1) 6-32 screw;
Chassis ground lug
Controls & Indicators
TX: (1) Green LED, indicates unit is in transmitter (encoder) mode
RX: (1) Green LED, indicates unit is in receiver (decoder) mode
OL: (1) Green LED, indicates an online connection to a control system
via Ethernet
LAN 1 – 2: (4) LEDs, green indicates Ethernet link status, amber indicates
Ethernet activity
LAN 3 LNK: (1) Green LED, indicates Ethernet link status
LAN 3 ACT: (1) Green LED, indicates Ethernet activity
HDMI OUTPUT: (1) Green LED, indicates video signal transmission at the
HDMI output
HDMI INPUT 1 – 2: (2) Green LEDs, each indicates sync detection at the
corresponding HDMI input
PWR: (1) Bi-color green/amber LED, indicates operating power supplied
via the power pack or injector, illuminates amber while booting and green
when operating
SETUP: (1) Red LED and (1) recessed pushbutton for Ethernet setup
RESET: (1) Recessed pushbutton for hardware reset
INPUT SEL: (1) Pushbutton for manual input selection and (2) bi-color
green/amber LEDs to indicate the current active input and signal presence
at each corresponding input
Power Pack (included): Input: 1.5 Amps maximum @ 100-240 Volts AC, 50/60 Hz
Output: 2 Amps @ 24 Volts DC
Model: PW-2420RU
Power over Ethernet: Compatible with Crestron DM-PSU-ULTRA-MIDSPAN
only [8]
Power Consumption: 35 Watts typical
Temperature: 32° to 104° F (0° to 40° C)
Humidity: 10% to 90% RH (non-condensing)
Heat Dissipation: 85 BTU/hr
DM-NVX-351 DM® 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
Chassis: Metal, black finish, integral mounting flanges, fan cooled; vented
top, front, bottom, and sides
Mounting: Freestanding, surface mount, or attach to a single rack rail
1. 4K60 4:4:4 performance requires the use of HDMI cables with a minimum TMDS bandwidth
of 18 Gbps, such as Crestron model CBL-HD (20 ft / 6.1 m max. length). If 4K60 4:2:0 or
4K30 4:4:4 performance is acceptable, cables with a minimum bandwidth of 10.2 Gbps may
be used, such as Crestron models CBL-HD-LOCK or CBL-HD (any available length).
Performance may also be affected if an HDMI coupler is inserted in the HDMI signal path.
Crestron coupling products (MP-WP150, MP-WP152, MPI-WP150, or FTA-CP-HD-101) and
cable retractors (CBLR2-HD) all have a specified bandwidth of 10.2 Gbps, and thus do not
support 4K60 4:4:4. Please be aware that bandwidth loss is cumulative, so the combination of
multiple components inserted inline may reduce performance.
2. To add a fiber optic LAN port requires the purchase of a Crestron SFP-1G series SFP
transceiver module (sold separately). All LAN ports on the DM-NVX-351 are for connection to
an Ethernet based AV network or device; they cannot be connected to the “DM” ports of other
Crestron devices.
3. When in encoder mode, the HDMI output resolution is matched to the resolution of the
encoded source.
4. The DM-NVX-351 can be configured to accept the connection of a USB device or a USB host,
not both. Crestron DM NVX products are engineered to deliver maximum compatibility with
the widest possible range of USB products. Crestron does not guarantee that all USB products
are compatible with DM NVX products. DM NVX is compatible with Crestron USB-EXT-DM
products, but is not compatible with the “USB HID only” signal extender technology found in
other Crestron DM products.
5. The analog audio port can function as an input or output, not both.
6. Audio from one onboard HDMI input may not be combined with video from the other onboard
HDMI input.
7. Combining audio from one encoder with video from another encoder utilizes the secondary
2-channel audio stream. Multichannel audio from one encoder cannot be combined with video
from another encoder.
8. The DM-NVX-351 is powerable using the 24V power pack (included) or a DM-PSU-ULTRAMIDSPAN (sold separately).
9. Device control via RS-232, IR, CEC, or Ethernet requires integration with a Crestron control
10. 3D video input signals are automatically converted to 2D.
11. HDMI connections require an appropriate adapter or interface cable to accommodate a DVI or
Dual-Mode DisplayPort signal. CBL-HD-DVI interface cables are available separately.
Height: 8.61 in (219 mm)
Width: 9.27 in (236 mm)
Depth: 1.50 in (39 mm)
2.0 lb (0.91 kg)
Available Models
DM-NVX-351: DigitalMedia™ 4K60 4:4:4 HDR Network AV Encoder/
Decoder w/Downmixing
Included Accessories
PW-2420RU: Desktop Power Pack, 24VDC, 2A, 2.1mm, Universal
(Qty. 1 included)
Available Accessories
SFP-1G: SFP Transceiver Modules
USB-EXT-DM: USB over Ethernet Extender with Routing
DM-CBL-ULTRA-PC: DigitalMedia™ Ultra Patch Cables
DM-CONN-ULTRA-RECP: DigitalMedia™ Ultra Keystone RJ45 Jack
DM-CBL-ULTRA-NP: DigitalMedia™ Ultra Cable, Non-Plenum Type CMR
DM-CBL-ULTRA-P: DigitalMedia™ Ultra Cable, Plenum Type CMP
DM-CBL-ULTRA-LSZH: DigitalMedia™ Ultra Cable, Low Smoke Zero
DM-CONN: Connector for DM-CBL-ULTRA
DM-CBL-8G-NP: DigitalMedia 8G™ Cable, non-plenum
DM-CBL-8G-P: DigitalMedia 8G™ Cable, plenum
DM-8G-CONN: Connector for DM-CBL-8G
DM-8G-CRIMP: Crimping Tool for DM-8G-CONN
DM-8G-CONN-WG: Connector with Wire Guide for DM-CBL-8G
DM-8G-CRIMP-WG: Crimping Tool for DM-8G-CONN-WG
CBL Series: Crestron® Certified Interface Cables
CNSP-XX: Custom Serial Interface Cable
IRP2: IR Emitter Probe w/Terminal Block Connector
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This product may be purchased from an authorized Crestron dealer. To find a dealer, please
contact the Crestron sales representative for your area. A list of sales representatives is available
online at www.crestron.com/salesreps or by calling 800-237-2041.
The specific patents that cover Crestron products are listed online at: patents.crestron.com.
Certain Crestron products contain open source software. For specific information, please visit
Crestron, the Crestron logo, AirMedia, DigitalMedia, DigitalMedia 8G, DM, and QuickSwitch HD
are either trademarks or registered trademarks of Crestron Electronics, Inc. in the United States
and/or other countries. Dolby, Dolby Atmos, and Dolby Digital are either trademarks or registered
trademarks of Dolby Laboratories in the United States and/or other countries. DTS, DTS-HD, and
DTS:X are either trademarks or registered trademarks of DTS, Inc. in the United States and/or
other countries. HDMI and the HDMI logo are either trademarks or registered trademarks of
HDMI Licensing LLC in the United States and/or other countries. Other trademarks, registered
trademarks, and trade names may be used in this document to refer to either the entities claiming
the marks and names or their products. Crestron disclaims any proprietary interest in the marks
and names of others. Crestron is not responsible for errors in typography or photography.
Specifications are subject to change without notice. ©2017 Crestron Electronics, Inc.
DM-NVX-351 DM® 4K60 4:4:4 HDR Network AV Encoder/Decoder w/Downmixing
Crestron Electronics, Inc. 15 Volvo Drive Rockleigh, NJ 07647
Tel: 800.237.2041 / 201.767.3400
| Fax: 201.767.1903
All brand names, product names and trademarks are the property of their respective owners.
©2017 Crestron Electronics, Inc.
Specifications subject to change without notice. Revised 04/28/17
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