VPort 461A Series

Superior video performance, 1-channel H.264/MJPEG industrial video encoders

Features and Benefits

Supports up to 4 video streams simultaneously for H.264 and MJPEG
Up to Full D1 resolution (720 x 480) @ 90 fps for 3 video streams with legacy analog video images
Video latency under 200 ms
2 Ethernet ports for cascading or Ethernet port redundancy
DynaStream™ for optimized network efficiency
ONVIF support for standardization and interoperability
Local storage capability with SD card slot
Industrial design with -40 to 75°C operating temperature range

Certifications

Introduction

The VPort 461A 1-channel industrial video encoder has a H.264 video compression algorithm that helps provide the best video quality on the market, but with a smaller bandwidth requirement than other video compression standards. In addition, to meet various video stream requirements, the VPort 461A can provide up to 4 video streams simultaneously using H.264 and MJPEG compression formats. Video streams can be used for different purposes, such as viewing, recording, and analysis. In addition, the rugged industrial design, which includes a -40 to 75°C operating temperature and industrial certifications, makes the VPort 461A suitable for harsh environments.

The VPort 461A is equipped with Moxa’s innovative DynaStream™ technology, which allows users to change the video frame rate automatically. With DynaStream™, users can control their network bandwidth budget and simplify network system management. The CBR Pro™ function helps to guarantee the lowest packet loss under limited bandwidth transmissions to ensure that images will not exhibit the mosaic effect.

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SD Slot

SDXC

Digital Input Channels

2
Digital Inputs

+13 to +30 V for state 1
-30 to +1 V for state 0
Max. input current: 8 mA
Relay Channels

2
Contact Current Rating

Resistive load: 1 A @ 24 VDC
Connector

Terminal block

10/100BaseT(X) Ports (RJ45 connector)

2

Protocols

TCP/IP
IPv4/IPv6
UDP
HTTP
RTP/RTSP
ARP
UPnP
FTP
TFTP
NTP Client
DNS
QoS
IGMP v3
ICMP
SNMPv1/v2c/v3
Modbus TCP
HTTPS
802.1X
NTCIP

Password

User-level password protection
Filter

IP address
Authentication

802.1X
Encryption

HTTPS
SSH

LED Indicators

STAT: Indicates if system is booted up properly or not
Power 1: Power 1 on/off
Power 2: Power 2 on/off
FAULT: Can be configured to correspond to system alarm, power failure, or disconnected network
Video: Video input signal
PTZ: Indicates if PTZ or COM port data has been transmitted
SD: Indicates if SD card was mounted successfully
Network: 10 Mbps or 100 Mbps

PTZ Port

1, RS-232 or RS-422/485 port, terminal block connector, 115.2 kbps
COM Port

1, RS-232 or RS-485 port, DB9 male connector, 115.2 kbps
Console Port

1 RS-232 port, 10-pin RJ45 (115200, n, 8, 1)

No. of Power Inputs

2
Input Voltage

Redundant dual inputs
Operating Voltage

12 to 32 VDC, 18 to 30 VAC
Input Current

0.64 A @ 12 VDC, 0.18 A @ 32 VDC
0.59 A @ 18 VAC
0.35 A @ 30 VAC
Power Connector

2-pin terminal block

Video Compression

H.264 (ISO/IEC 14496-10) or MJPEG
Video Input

1, BNC connector (1.0 Vpp, 75 ohm)
Video Output

via Ethernet
Video Streams

4 independent H.264 or MJPEG video streams
NTSC/PAL

Auto-sensing or manual

Video Resolution and FPS (frames per second)

	NTSC		PAL
	Size	Max. FPS	Size	Max. FPS
QCIF	176 x 112	30	176 x 144	25
CIF	352 x 240	30	352 x 288	25
VGA	640 x 480	30	640 x 480	25
4CIF	704 x 480	30	704 x 576	25
Full D1	720 x 480	30	720 x 576	25

Video Viewing

DynaStream™ support for changing the video frame rate automatically
CBR Pro™ for good image quality in limited bandwidth transmissions
Adjustable image size and quality
Timestamp and text overlay
OSD (On Screen Display) position adjustable
Image tuning: control brightness, contrast, saturation
Maximum of 10 simultaneous unicast connections, 50 multicast clients

Audio Inputs

1 Line-in or MIC-in with 3.5 mm phone jack
Audio Outputs

1 Line-out, with 3.5 mm phone jack
Audio Format

Mono, PCM (G.711)

Video Standards

ONVIF Profile S

PTZ Camera Control

Via PTZ port or COM port
PTZ Control Functions

Pan, tilt, zoom, focus, move speed, preset position (max. 128 positions)
PTZ Function Updates

Driver upload supported
Protocols

Pelco D, Pelco P, Custom Camera

Intelligent Video

Camera tampering detection
Video Motion Detection

3 independently configurable areas
Scheduling

Daily repeat timing schedule
Imaging

JPEG snapshots for pre/trigger/post alarm images
Custom Alarms

HTTP event servers for setting customized alarm actions
FTP Messaging

Automatic transfer of stored images via FTP as event-triggered actions
Pre-Alarm Buffer

50 MB video buffer for JPEG snapshot images
Video Recording

Event recordings stored on the SD card

Memory Size

1 GB
Operating System

Windows 7 or above
Browser

Internet Explorer 9.x or above
Multimedia

DirectX 9.0C or above

Housing

Metal
Dimensions

46 x 134 x 105 mm (1.81 x 5.31 x 4.13 in)
Weight

710 g (1.57 lb)
Installation

DIN-rail mounting
Wall mounting (with optional kit)

Operating Temperature

Standard Models: -25 to 60°C (-13 to 140°F)
Wide Temp. Models: -40 to 75°C (-40 to 167°F)
Storage Temperature (package included)

-40 to 85°C (-40 to 185°F)
Ambient Relative Humidity

5 to 95% (non-condensing)
Altitude

2000 m

EMI

CISPR 32, FCC Part 15B Class A
EMS

IEC 61000-4-2 ESD: Contact: 6 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 20 V/m
IEC 61000-4-4 EFT: Power: 2 kV; Signal: 2 kV
IEC 61000-4-5 Surge: Power: 2 kV; Signal: 1 kV
IEC 61000-4-6 CS: 10 V
IEC 61000-4-8 PFMF
Freefall

IEC 60068-2-31
Safety

UL 60950-1
Shock

IEC 60068-2-27
Vibration

IEC 60068-2-6

Time

862,568 hrs
Standards

Telcordia SR332

Warranty Period

5 years
Details

See www.moxa.com/warranty

Download datasheet

Software, Firmware, and Drivers

Name	Type	Checksum	Version	Operating System	Release Date
Software Package for VPort 461A Series (MIB file) Download 45.9 KB	Software Package	F9073A2649295C9581DFBAD31D2963122D34CC06DB34048F47899B0D5A05131F55B7790B67918772A515C21A80D6A3CB860EE1A36399EB615D9531C7854D465C SHA-512	v2.0		Feb 27, 2024 Feb 27, 2024 Release notes
Firmware for VPort 461A Series Download 40.7 MB	Firmware	D0A6265495202C45037BE77AAAFE68FACBEEEF4462CA399D8AD39ED367CC63C3B1805077BA0EDF13DDE44DC5A515020774F232D4B65E4C6E290244A665F6D70E SHA-512	v2.0		Feb 27, 2024 Feb 27, 2024 Release notes
Software Package for VPort 461A Series (MIB file) Download 44.6 KB	Software Package	F608644AC7E5987974A00BAA1F822E2FD311987096D59AE3342AEA4B83C2520A5C17B044828D62F3E9CDEE99069F053370B27AAE2C5F2549E234D0322080710D SHA-512	v1.2		Sep 17, 2017 Sep 17, 2017 Release notes
Moxa VPort and EtherDevice Configurator Utility Download 1.6 MB	Utility	0B98E111BF05C9CD7AFAF0B18477038BBCFA96FC151720DB700F924ACA88F8463C5858E09F114AB1AAD7F0537BBDEB3E85B64980941FA9897F6102F48EA251D7 SHA-512	v5.3	Windows	Apr 09, 2012 Apr 09, 2012 Release notes

Support Documents

Name	Type	Version	Release Date
Datasheet for VPort 461A Series Download 881.3 KB	Datasheet	v2.1	Oct 13, 2025 Oct 13, 2025
FOSS Statement for VPort 461A series, VPort 464 series Download 978.7 KB	Declaration	v1.0	Jan 14, 2025 Jan 14, 2025
Declaration of Conformity (EU/UK) for VPort 461A Series Download 296.4 KB	Declaration	v1.0	Mar 18, 2024 Mar 18, 2024
QIG for VPort 461A Series Download 3.7 MB	QIG	v2.0	Mar 01, 2024 Mar 01, 2024
Manual for VPort 461A Series Download 9.1 MB	Manual	v2.0	Mar 01, 2024 Mar 01, 2024
Manual for VPort 461A Series (Modbus address table) Download 235.7 KB	Manual	v1.0	Mar 05, 2018 Mar 05, 2018
2D CAD for VPort 461A Download 146.8 KB	2D CAD		Dec 23, 2015 Dec 23, 2015
Moxa SoftNVR-IA IP Surveillance Software User's Manual Download 3.6 MB	Manual	v1.0	Apr 22, 2010 Apr 22, 2010

Available Models (2)

Show Images

	Compare VPort 461A	Compare VPort 461A-T
Video Interface	1-channel analog video input	1-channel analog video input
Audio Interface	1 x line-in, 1 x line-out	1 x line-in, 1 x line-out
Local Storage	SD slot, SDXC interface	SD slot, SDXC interface
Power Input	Redundant power inputs with 2 x 12/24 VDC, 24 VAC power supplies	Redundant power inputs with 2 x 12/24 VDC, 24 VAC power supplies
Operating Temp.	-25 to 60°C	-40 to 75°C
Mounting	DIN-rail mount or Panel mount (with optional kit)	DIN-rail mount or Panel mount (with optional kit)
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