Radiant Communications VL4510 User manual

Brand: Radiant Communications

Model: VL4510

Type: User manual

VL4500 ENCODER SERIES

Installation and Operations Manual

User Guide

Radiant

Communications

Corporation

V L 4 5 0 0 E N C O D E R S E R I E S

Installation and Operation Manual

 Radiant Communications Corp. 2016

5001 Hadley Road

South Plainfield, NJ 07080

Phone 908.757.7444 • Fax 908.757.8666

www.rccfiber.com

Table of Contents

Product Summary .................................................................... 1

Application ...................................................................................... 1

Features .......................................................................................... 2

Front Panel ..................................................................................... 3

Rear Panel ...................................................................................... 4

Encoding Profiles ............................................................................ 6

Output Interfaces ............................................................................ 6

Energy Specifications...................................................................... 6

Installation ................................................................................ 7

Communication ........................................................................ 8

Network Management ..................................................................... 8

Configuration ............................................................................ 9

Video Settings ............................................................................... 10

Audio Settings ............................................................................... 15

TS Settings ................................................................................... 17

Network Settings ........................................................................... 20

System Setup ................................................................................ 22

Firmware Upgrade: ................................................................................. 25

User Presets ................................................................................. 26

Encoder Default Settings .............................................................. 27

Front Panel Interface..................................................................... 28

Revisions ............................................................................... 30

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Product Summary

Application

With compression efficiency and advanced pre-processing the VL4500 Series delivers both HD and SD

content at a low bitrates and uncompromised quality. As a result, the VL4500 Series can be used to deliver

video services across all networks and fulfill multiple applications for various business models.

The VL4500 Series encoders provide cost-effective live streaming of PEG and in-house channels. With

SD/HD simulcast function, the VL4500 allows the broadcaster to stream both SD and HD content from

one source by utilizing the video scaling and conversion functions while utilizing low power consumption

and minimal heat output.

The SFP output interface allows the operator to use either existing duplex or single fiber or 1000B RJ45.

PEG STUDIO

VL4500

text

CATV HUB

SFP

FIBER

DOCSIS

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Features

• Multi-Stream Encoding

• Superior HD Quality at Low Bitrates

• Out-of-Band Management

• Advanced Video Pre-Processing

• GigE TS Interface

• MPEG2 SD/HD

• H.264 AVC SD/HD

• VBR and CBR Encoding

• AC-3 Audio Encoding

• EIA-708 Closed Caption Support

• IP, ASI and QAM output Options

• Video Scaling and Conversion

• Low Power Consumption and Heat Dissipation

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Front Panel

LCD/KEYPAD LED

LED

 Power – Indicates that the unit is powered on.

 Status – Indicates the current status of the encoding process.

 Alarm – Indicates any hardware errors

LCD/Keypad

 Up – Moves the cursor up in all menus.

 Down – Moves the cursor down in all menus.

 Left – Moves back a menu or will move the cursor to the left one digit.

 Right – Selects a menu item or will move the cursor to the right one digit

 Plus – Increments a digit when entering values.

 Minus – Decrements a digit when entering values.

 Enter – Confirms a value or menu selection.

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Rear Panel

POWER

+ V

TS OUT

EARTH

SDI IN

TS OUT

SDI IN

RS232

Serial Port

MGMT

10/100/1000

VL4510Q

10/100/1000

QAM

POWER

1 2

GND +12 V

POWER

+ V

EARTH

SDI IN

TS OUT

SDI IN

RS232

Serial Port

MGMT

VL4510

ASI OUT

10/100/1000

SFP

MGMT

TS OUTPUT

POWER

1 2

GND +12 V

POWER

+ V

10/100/1000

EARTH

SDI IN

RS232

Serial Port

SFP

MGMT

VL4500/SDI

TS OUTPUT

ASI OUT

LOCK

RX|TX

LINK

POWER

1 2

GND +12 V

POWER

+ V

TS OUT

EARTH

SDI IN

TS OUT

SDI IN

RS232

Serial Port

MGMT

10/ 100/ 1000

VL4510C

10/ 100/ 1000

ASI OUT

CVBS IN

1 2 3 4 5

AUDIO IN

POWER

1 2

GND +12 V

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Input Rear Panel Connections:

 SDI Input – SDI input supporting SD-SDI (SMPTE-259M), HD-SDI (SMPTE-292M) and

3G-SDI (SMPTE-424M), 75Ω BNC Connector

 VL4500/SDI Inputs:

o SDI BNC input supporting SD-SDI (SMPTE-259M), HD-SDI (SMPTE-292M) and

3G-SDI (SMPTE-424M), 75Ω BNC Connector, Signal Lock LED

o Fiber SDI input supporting up to 3G over fiber. SFP Module RX port is on the left

side, Optical Link LED

o SDI input switches with optical link status. When optical link is detected the active

input SDI port is the optical. If optical link is lost the input port switches to coax SDI input

BNC port.

o CVBS Input, NTSC 1Vp-p, 75 Ohm.(VL4510C only)

o Analog Audio Input, 600 Ohm, balanced Input(VL4510C only)

1 2 3 4 5

Pin Function

1 Audio In 1 +

2 Audio In 1 -

3 GND

4 Audio In 2 +

5 Audio In 2 -

o Input Select Switch. Left Side – SDI Input; Right Side – CVBS Input(VL4510C only)

Output Rear Panel Connections:

 10/100/1000 TS Port – Gigabit Ethernet Transport Stream Output via SFP Interface

 DVB ASI Output – Available only on VL4510 models.

 QAM Output – Available only on VL4510Q model

Ethernet Management Port

 The Ethernet Management Port is used for monitoring, firmware upgrades, and command

line interface to configure the unit.

Power Input

 12V DC Input – Pin1(GND), Pin2(+V), 12VDC@4A Power Supply

 Chassis GND Lug

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Encoding Profiles

MPEG2

h.264

PROFILE

MPEG-2 MP@HL ISO/IEC 13818-2

AVC H.264 high profile levels 4.1 and 4.2

CHROMA

4:2:0

RESOLUTION

480i, 480p, 720p, 1080i and 1080p

FRAME RATE

24, 25, 29.97, 30, 59.94 and 60fps

ASPECT RATIO

4:3 and 16:9

PICTURE TYPE

IP, IPB, IPBB

IP, IPB, IPBB, IPBBB

GOP SIZE

10-60 frames

GOP STRUCTURE

IBB or BBI

VIDEO BITRATE

1.5-24M

500k-24M

VIDEO SCALING

DOWN Conversion

AUDIO ENCODING

AC3 2.0, MPEG Layer II. and AAC

AUDIO SAMPLING RATE

48kHz

AUDIO BIT RATE

96-384kHz

Output Interfaces

IP: SFP Interface

 1000B RJ45 Module

 Gigabit SFP Optical Module

DVB ASI Output, 75Ohm BNC Connector with 54M max rate

TS: MPEG2 TS, User Selectable Rate, Full PID Table including TS ID, Program ID, Video, Audio,

PMT and PCR PIDs

Energy Specifications

By using advanced encoding algorithms Radiant achieves superior video quality at low bitrates with

extremely Low Power Consumption and Heat Dissipation.

Total power consumption is 24W per 1080p and 480i dual stream at full 19M TS bitrate.

The temperature inside and outside of the unit will not exceed 40⁰C. Cooling is provided by two fans

located on the front left side of the unit.

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Installation

The VL4500 chassis can be mounted in a standard EIA, 19” rack.

Secure the Encoder’s front panel to the rack by inserting four machine screws, with cup washers,

through the four mounting holes in the front panel.

When installing one or more encoders in a headend rack, it is recommended to leave a 1 rack unit

space (1.75” high) between units to maximize air flow.

To power up the unit, connect the 12VDC power supply to the unit.

If both power sources are connected they will act as redundant power supplies.

The POWER LED on the front-panel will light green and the LCD screen will turn on.

The standard boot-up time is less than one minute, after successful boot-up the LCD screen will read

“VL4500”

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Communication

The Encoder can be controlled and managed with either the out-of-band network port located on

the front panel or via the RS232 serial port. In-band management through the TS port is possible as

well.

Network Management

Initially, the simplest way to setup the networked PC to communicate with the VL4500 is to put the PC on

the same subnet as the VL4500. The default IP address of the VL4500 management port is:

192.168.16.252

NOTE: The static IP of the computer cannot be the same as the static IP of the VL4500.

The following steps explain how to change the IP address of a computer running windows 7:

1. On your computer, open the "Control Panel"

2. Click on “Network and Internet”

3. Click on the "View network status and tasks"

4. Click on “Change Adapter Settings” on left hand side of the window

5. Right-click on the "Local Area Connection", and then click on the "properties".

6. A dialog box entitled "Local Area Connection Properties" will appear. In this box, double-

click on the "Internet Protocol Version 4 (TCP/IPv4)".

7. A dialog box entitled "Internet Protocol Version 4 (TCP/IPv4) Properties" will appear.

8. Select the "Use the following IP address" option and enter the following addresses:

IP address: 192.168.16.2

Subnet mask: 255.255.255.0

9. Click OK to close the dialog box. Now your computer is ready to communicate with the unit.

10. Open an Internet Explorer web browser on your computer and enter the following URL

http://192.168.16.252

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Configuration

The VL4500 Web management system is accessible through both TS and MGMT Ethernet interfaces.

Settings are grouped by tabs for:

 Video Settings

 Audio Settings

 TS Settings

 Network Settings

 System Settings

 User Presets

Note:

Changed settings will take effect only after the Encoder is started or restarted via the buttons on the

bottom of the screen.

Settings can be saved to a desired preset; preset includes also the current state of the Encoder

The encoder is being shipped with encoder factory preset. Saving on that preset is not possible. After the

unit is configured, a new preset should be created and saved.

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Video Settings

Under Video Settings tab, the user can set specific codec parameters and SDI Video Input signal

information, that includes Input resolution and frame rate. Supported are:

 1080i at 24, 29.97 and 30 fps

 720p at 29.97, 30, 50, 59.94 and 60 fps

 480i at 29.97 and 30 fps

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The output resolution follows the input resolution of the incoming SDI signal or it could be forced. In

case that the output resolution is forced the input signal must have the same resolution as the input.

The detected resolution and frame rate are shown on the web page.

VL4510C unit supports either SDI or composite video input. Selection of the active video input can be

done from the dropdown menu of Input Source parameter.

Encoding field order can be selected to either TFF (top field first) or BFF (bottom field first). When down

converting from HD to SD with QBA support for old legacy STB, set the filed order to TFF for the SD

encoder.

H264 encoding is supported only in BFF field order.

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The VL4500 encoder supports the following bitrate ranges:

 MPEG2 Range from 7M to 25M

 MPEG2 SD resolution Range from 1M to 15M

 H264 HD resolution Range from 2M to 25M

 H264 SD resolution Range from 500k to 25M

The bitrate is adjustable in 100K increments, see the table below for recommended settings:

Output Stream(s)

Video 1 (HD/SD), kbps

Audio, kbps

Output Bitrate, kbps

MPEG2, 1080p SPTS

16000

192

19600

h.264, 1080p SPTS

12000

192

13500

MPEG2, 1080i SPTS

12000

192

15000

h.264, 1080i SPTS

8000

192

9500

MPEG2, 720p SPTS

9000

192

12000

h.264, 720p SPTS

6000

192

7500

MPEG2, 480i(p) SPTS

3500

192

5000

h.264, 480i(p) SPTS

1500

192

2000

The user can select the aspect ratio and rate control for the encoder.

The supported video ratios are 16:9 (widescreen) and 4:3 (normal).

Both CBR (constant bit rate) and VBR (variable bit rate) encoding are supported

Under VBR rate control the encoder will vary the amount of bits used to represent a frame so that the

overall average amount of bits-per-frame is achieved. It does this by taking bits from frames with less

information to encode (that don't need them) and giving them to frames that have more information to

encode (and does need them). With CBR each frame uses the same amount of bits regardless of whether

it needs them or not.

The MPEG2 or h.264 video needs a suitable GOP structure. GOP stands for 'Group of Pictures' and

refers to the sequence of frames in the stream. When the video is encoded, the compression algorithm

puts the video content into different types of frame, usually just I-frames, P-frames and B-frames. The I-

frames are almost complete and can be played without any further information, they don't rely on other

frames for their interpretation or playing. On the other hand, P-frames contain only the details that

describe the differences between that frame and the previous frame – they are forward 'Predicted'. A B-

frame ('Bi-predictive picture'), on the other hand, contains only the differences between the current frame

and both the preceding and following frames and, as a result, allows more compression.

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A GOP consists of an initial I-frame and a sequence of P and B frames. The GOP length is the number of

frames in each repeated sequence (one I-frame in each) and it’s being set via the I-Frame interval.

A typical GOP with structure ’IBBP’, and I-Frame interval of 15

Standard practice is to use GOP with an I-Frame interval that’s half of the input video frame rate for

MPEG2, and full for h.264

Video frame rate

MPEG2 I-Frame Interval

h.264 I-Frame Interval

24fps

29.97, 30fps

59.94, 60fps

B-frames improve the quality of the picture, but they also increase the latency by 1 frame time. To

minimize latency, B-frames should be lowered or disabled. Recommended encoding GOP for MPEG2 is

IBBP, which has 2 B frames, and for MPEG4/h.264 is IBBBP, which has 3 B frames.

A problem that occurs while using MPEG compression is error propagation. It is obvious that when there

is an error in the I-frame and following frames are calculated with this frame, the error will continue in

these frames as well. This is one of the reasons the GOP structure is repeated. It ensures a new I-frame to

rebuild a perfect image, although the arrival of the I-frame might take some time.

For fast motion video that needs to be encoded at lower bitrate it is recommended that the GOP size be

set to 12 or lower. For slow to moderate motion or digital signage video the GOP size should set to half

of incoming vide frame rate.

The VL4500 Encoder provides a dual stream output, one in HD resolution and a second down-converted

to SD resolution. If 1xHD+1xSD mode is selected in the Settings tab (see page xx) the bitrate resolution

and GOP structure needs to be set as shown below.

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The typical bitrate for MPEG2 SD service is 3000 to 3500k and for MPEG4/h.264 1000 to 1500k. The

available resolutions are 480i or 480p.

Vl4500 supports MPEG4/h.264 progressive and field based interlaced coding with ARF (Adaptive

Reference Field), SPF (Same Parity Reference Field) and MBAFF (Macroblock-Adaptive Frame/Field

Coding) control modes.

MBAFF mode greatly improves quality for a given bitrate. Being a relatively new technology MBAFF is

still not supported well among legacy AVC hardware and software decoders. While not as efficient as the

newer MBAFF, in terms of bandwidth vs quality, SPF and ARF modes perform in faster encoding and are

supported by legacy AVC hardware and software decoders.

HRD buffer Setting for h.264. To manually calculate max HRD Buffer use:

(17178750*8)/video bitrate (bps)

For h.264 I-frame Interval must be multiple of (number of B frames + 1). For example, 2 x B-frames, I-

frame interval can be 30. With 3 x B-frames, I-frame interval can be 32.

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Audio Settings

The Audio Settings tab allows you to set the audio codec, bitrate and channel mode.

The VL4500 supports AC3 2.0, MPEG Layer II and AAC audio codecs.

The channel mode can be set to Mono or Stereo. The Mono mode actually supports a dual channel,

allowing the encoding of two separate audio channels (SAP).

The available audio bitrates are 96, 128, 192 and 384k.

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Note: The only supported mode for CATV applications is:

Audio Codec: AC3

Audio Bitrate: 192k

Channel: Mono/Stereo

The audio input source for VL4510C units is automatically switch based on video input selection.

For SDI input, audio input defaults to embedded SDI audio. For CVBS video input audio input

defaults to 600Ohm balanced analog audio.

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TS Settings

Transport stream (TS) is a format that allows multiplexing of digital video and audio and

synchronizes the output.

The TS consists of single (SPTS) or multiple (MPTS) programs. The programs are defined by groups

of one or more PIDs that are related to each other. For instance, a transport stream used in digital

television might contain three programs, to represent three television channels. Suppose each

channel consists of one video stream, one or two audio streams, and any necessary metadata. A

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Radiant Communications VL4510 User manual

Radiant Communications VL4510 User manual

Radiant Communications VL4510 User manual

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