Studio Technologies 5152 Manuale utente

www.studio-tech.com

50185-0913, Issue 5

User Guide

Issue 5, September 2013

This User Guide is applicable for

Model 5152 modules with the following order codes:

M5152, M5152-01, M5152-02, M5152-03X, and M5152-04X

with serial numbers 00151 and later

and ﬁrmware versions

MCU 2.3 and later (m5152.s19) and FPGA 2.2 and later (m5152.bit)

Model 5152

Video Generator/Audio Embedder Module

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Model 5152 User Guide Issue 5, September 2013

Studio Technologies, Inc. Page 3

Model 5152

Video Generator/Audio Embedder Module

Table of Contents

Introduction ................................................................... 5

Installation .................................................................... 9

Conﬁguration ................................................................ 14

Operation ...................................................................... 22

Technical Notes ............................................................ 27

Speciﬁcations ............................................................... 34

Appendix A—Model 5152 Versions .............................. 35

Appendix B—DC Input/Data and GPI/GPO

Interconnection Details ................................................. 36

Appendix C—Model 5152 Front Panel and

Printed Circuit Board (PCB) Dimensions ...................... 38

Issue 5, September 2013 Model 5152 User Guide

Page 4 Studio Technologies, Inc.

Model 5152

Video Generator/Audio Embedder Module

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Model 5152 User Guide Issue 5, September 2013

Studio Technologies, Inc. Page 5

Model 5152

Video Generator/Audio Embedder Module

Introduction

The Model 5152 Video Generator/Audio

Embedder Module is a unique device suited

for a variety of custom broadcast, post-

production, industrial, and corporate mul-

timedia installations. As a member of the

5100-Series of modules, the Model 5152’s

compact size belies its powerful video and

audio feature set. At its most basic, the

Model 5152 provides the ability to embed up

to eight audio channels (four AES3 digital

audio “pairs”) into a SMPTE®-compliant

HD- or 3G-SDI video “stream.” Unlike most

stand-alone embedder products, Model

5152 embedding operation does not require

an external source of SDI to be connected.

Advanced circuitry within the Model 5152

supports the generation of a broadcast-

standard high-deﬁnition SDI signal. And

rather than reproducing a ﬁxed test pattern,

the Model 5152 has the capability to store

and output two custom video images. The

images, one for “720” and one for “1080,”

are based on bitmap (.bmp) ﬁles that can

be created using a personal computer’s

graphics program.

For convenience, the .bmp ﬁles are stored

in the module’s nonvolatile memory via a

standard USB ﬂash drive. The appropriate

“720” or “1080” image is automatically con-

nected to the SDI output whenever an SDI

input signal is not present. This ensures

that an SDI output signal is always sent to

equipment further along the signal chain.

The Model 5152’s video signal generation

capability can be extremely useful, serv-

ing as both a “keep-alive” signal as well as

allowing a detailed graphics image to be

displayed for identiﬁcation purposes. When

a valid HD- or 3G-SDI signal is connected

to the module’s input it will pass through,

unchanged, to the module’s SDI output.

Only when an input is not present will the

stored image be generated. The format

and rate of the stored image will match

that of the previously-connected SDI input

signal. This “learning” capability allows a

Model 5152 to automatically adapt to the

SDI format and rate utilized by a speciﬁc

facility or application.

An alternate operating mode can be se-

lected, allowing the Model 5152 to serve

as a dedicated video signal generator. In

this mode an SDI signal connected to the

module will serve as an external timing

reference.

General Highlights

Applications for the Model 5152 include

sports broadcasting booth packages,

“POV” (point-of-view) remote-controlled

camera systems, stadium audio/video

interface (I/O) locations, and government/

Figure 1. Model 5152 Video Generator/Audio Embedder Module front and rear views

Issue 5, September 2013 Model 5152 User Guide

Page 6 Studio Technologies, Inc.

Model 5152

Video Generator/Audio Embedder Module

corporate facilities. The module’s perfor-

mance is completely “pro” with video and

audio quality, reliability, and installation ﬂex-

ibility matching that of much larger-scale

equipment.

For operation the Model 5152 only requires

connection of a few signals. These consist

of SDI inputs and outputs, up to four unbal-

anced digital audio sources, an external

source of nominal 12 volts DC and, op-

tionally, two wires associated with a local

RS-485 data bus. Some applications may

also utilize the general-purpose input (GPI)

and general-purpose output (GPO) func-

tions (available only on modules with serial

numbers 00251 and later). Coaxial SDI

input and output support is standard. Opti-

cal input and output support is optional. The

acceptable DC input voltage range is 10 to

18, allowing a variety of power sources to

be utilized.

The Model 5152 uses standard connectors

for fast, convenient interfacing. Coaxial SDI

input and output signals use BNC con-

nectors. An optional video SFP ﬁber optic

module can be installed at the factory. The

module supports interconnection of single-

mode optical ﬁbers using LC plugs. Digi-

tal audio signals interface with the Model

5152 by way of a 9-pin D-subminiature

connector. The DC power input and data

bus connections use a 4-position, 0.1-inch

header. The GPI and GPO connections use

a 3-position, 0.1-inch header. Low-cost IDC

(insulation-displacement connector) mating

sockets allow simple interconnection with a

variety of wire gauges. Twelve status LEDs

offer users both performance conﬁdence

and troubleshooting assistance.

The Model 5152 is compatible with the

Studio Technologies’ Model 5190 Remote

Access Module. This will allow remote

conﬁguration, monitoring and control, via an

Ethernet connection, of key module operat-

ing and status parameters. A local RS-485

data bus allows up to 16 of the 5100-Series

modules to be connected to a Model 5190.

Several Model 5152 operating parameters

can be conﬁgured to meet the needs of

speciﬁc applications. A USB ﬂash drive

along with several DIP switches, are used

to convey the conﬁguration to the module.

A simple text ﬁle that reﬂects the desired

conﬁguration is created and stored on the

USB ﬂash drive. When inserted into the

appropriate socket on the Model 5152 the

ﬁle is read and stored. Updating the Model

5152’s ﬁrmware (embedded software) is

also possible using a USB ﬂash drive load-

ed with factory-supplied ﬁles.

Model 5152 Video Generator/Audio Em-

bedder Modules do not include a mounting

enclosure or chassis. They are intended

for mounting in custom 19-inch rack pan-

els, equipment boxes, broadcast furniture,

“NEMA” I/O boxes, or other specialized

enclosures. It is expected that integration

ﬁrms will create applications that use Model

5152 modules as part of complete broad-

cast, production, corporate, and government

solutions. Sophisticated users will be able

to easily create “one-off” solutions to solve

unique challenges.

SDI Inputs and SDI Outputs

High-deﬁnition SMPTE-compatible SDI sig-

nals with data rates of 1.485 Gb/s nominal

(HD-SDI) and 2.97 Gb/s nominal (3G-SDI)

can be connected. Virtually all of the com-

monly-utilized “720” and “1080” formats are

supported. Standard-deﬁnition SDI signals

with a data rate of 270 Mb/s nominal (SD-

SDI) are not supported. It was felt that users

looking for advanced solutions such as

Model 5152 User Guide Issue 5, September 2013

Studio Technologies, Inc. Page 7

Model 5152

Video Generator/Audio Embedder Module

those provided by the Model 5152 will not

typically be working with SD-SDI signals.

But be assured that many HD-SDI and

3G-SDI formats and rates are supported,

allowing the Model 5152 to be appropriate

for worldwide use.

Coaxial (BNC) Support

Using standard BNC connectors, the Model

5152 supports one coaxial SDI input and

one coaxial SDI output.

Optical Fiber Support

Factory-implemented options allow the

Model 5152 to support SDI signals that

are transported using single-mode optical

ﬁbers. Using video SFP modules a range

of optical input, output, and transceiver

capabilities can be supported. For a list

of available Model 5152 versions refer to

Appendix A.

The standard 1310 nanometer optical

transmit wavelength is available, as are the

more-esoteric CWDM wavelengths. A mod-

ule that includes an optical SDI output will

always have its optical output active, trans-

porting the same SDI data as that present

on the coaxial (BNC) output. When a Model

5152 has been provided with an optical SDI

input a conﬁguration choice selects whether

it, or the coaxial (BNC) input, is active.

Video Generation Capability

During typical operation an HD- or 3G-SDI

signal is connected to the Model 5152’s se-

lected SDI input. It’s then “passed through”

to the module’s SDI output(s) and on to the

next part of the signal chain. But what hap-

pens when the external SDI signal is not

present? That’s when the Model 5152’s in-

ternal SDI generator becomes active. When

a signal is not present on the selected SDI

input the module will generate a high-

deﬁnition (HD- or 3G-SDI) image that will

serve as a “slate,” ID, or “SDI-active” signal.

This SDI signal also allows the audio em-

bedding function to remain active.

From the factory two bitmap (.bmp) image

ﬁles are stored in nonvolatile memory. One

ﬁle is used for generating the image for

1280 x 720 pixel formats and the other for

1920 x 1080 pixel formats. But alternate

bitmap image ﬁles can be created and

stored in the Model 5152. These alternate

images can supply site- or application-

speciﬁc information useful to “downstream”

users. Using a personal-computer graph-

ics program, such as Microsoft® Paint® or

Adobe® Photoshop®, generating custom

images and storing them in the appropriate

bitmap format is a simple matter.

A USB port, located on the Model 5152’s

front panel, allows direct connection of

a standard USB ﬂash drive. If the Model

5152’s ﬁrmware (embedded software)

recognizes compatible FAT32 bitmap

(.bmp) ﬁles on the USB ﬂash drive they

will be automatically loaded into nonvola-

tile memory. The USB ﬂash drive can then

be removed with the custom images safely

stored within the Model 5152.

One subtle but important conﬁgurable

feature has been included for broadcast

applications which use the Model 5152’s

SDI output(s) “on-air.” When an SDI signal

is removed from the module’s selected SDI

input, the Model 5152 can be conﬁgured

to output a few seconds of solid-gray color

before the stored image appears. This will

help to ensure that technicians or opera-

tors will be visually “warned” that the mod-

ule’s input signal has been lost and that

the stored image will soon be taking its

place. It’s hoped that the solid-gray video

Issue 5, September 2013 Model 5152 User Guide

Page 8 Studio Technologies, Inc.

Model 5152

Video Generator/Audio Embedder Module

image will be innocuous for on-air viewers

yet different enough to encourage operators

to switch the module’s output away from

being “on air.”

A unique feature of the Model 5152 is its

ability to automatically adapt to the for-

mat and rate of a connected SDI signal.

This allows the stored image to be output

at the same format and rate as that used

by the associated network, local facility,

or event. If, for example, a connected in-

put is “1080i/59.94” then the Model 5152

will automatically detect and store that

information. From then on whenever an

SDI input signal is not present the internal

generator will output the stored image at

“1080i/59.94.” Changing the format and rate

of the generator only requires connection of

an SDI signal with the desired characteris-

tics. (A minimum required connection time

helps to ensure that an accidental format/

rate change won’t occur.) However, there

may be situations where maintaining the

format and rate of the internally-generated

signal is important. To support this condition

one conﬁguration choice allows the auto-

matic format/rate selection function to be

disabled.

Video Generation with External

Reference

Some applications may beneﬁt from the

Model 5152 serving as a full-time stand

alone video generator. A conﬁguration

choice helps to support such applications

by using the selected SDI input only as a

timing reference. Unlike typical operation,

when selecting this operating mode a signal

connected to the selected SDI input would

not pass through to the SDI. Its rate, format,

and speciﬁc timing characteristics would

be used as a reference for the internally-

generated video output. Note that bi-level or

tri-level analog timing reference signals are

not supported. Only a HD-SDI or 3G-SDI

signal can serve as a reference signal for

the Model 5152.

Audio Embedding

The Model 5152 allows four stereo digital

audio signals to be embedded into the SDI

output signal. The eight channels of audio

will always be embedded, whether or not

an SDI source is connected to the module.

Nine conﬁguration choices allow ﬂexibility

as to where the digital audio inputs will be

embedded into the SDI output signal. A

range of applications can be supported by

taking advantage of the module’s ability to

embed into groups 1, 2, 3, or 4.

The four digital audio inputs are 75 ohms,

unbalanced, and follow the AES3 standard.

They are intended for use with broadcast-

standard “24-bit, 48 kHz” digital audio

signals. Advanced sample-rate-converter

circuitry ensures excellent performance with

signals that are asynchronous with each

other and the Model 5152’s internal timing.

The Model 5152’s digital audio inputs are

directly compatible with the digital audio

output provided by the Studio Technologies’

Model 5110 Mic/Line Input Module. Up to

four Model 5110 modules can be directly

connected, supporting eight mic/line inputs.

A major Model 5152 feature is its ability

to embed audio into the SDI output signal

whether or not an SDI input signal is pres-

ent. If a valid SDI signal is connected then

the Model 5152 will embed audio data into

that data stream. If an SDI signal is not

connected embedding will continue but now

will be associated with the custom image.

In this way embedded-audio transport will

always be supported.

Model 5152 User Guide Issue 5, September 2013

Studio Technologies, Inc. Page 9

Model 5152

Video Generator/Audio Embedder Module

When audio is being embedded into an

externally-connected SDI signal it will re-

place any incoming embedded audio that’s

already present. However, any embedded

audio present on groups that are not being

embedded by the Model 5152 will correctly

“pass through” to the SDI output. This is

important when SDI input signals that

already include embedded audio, such as

from portable ENG-type cameras, are con-

nected. Such devices typically embed two

or four microphone audio channels into

group 1, which need to pass through the

Model 5152 without interference.

It’s important to note that when changing

from an external SDI signal to the internal

generator (or vice-versa) the SDI output,

including embedded audio, will momentari-

ly lose timing and some video and audio

“glitches” may be present. For the intended

Model 5152 applications this should

not prove to be an issue but is worth

mentioning.

GPI and GPO

Model 5152 modules with serial numbers

00251 and later offer a general-purpose

input (GPI) and a general-purpose out-

put (GPO) function. The GPI allows the

connection of a switch or contact closure

to control the on/off status of the Model

5152’s audio embedder function. Future

versions of the Model 5152’s ﬁrmware may

implement other GPI-controlled actions.

The GPO function provides an indication

of the status of the selected SDI input. It’s

intended that the GPO will be connected

to an LED indicator. A conﬁguration choice

selects whether the GPO is active (+3.3

volts) when the selected SDI input is valid

or active when the selected SDI input is

invalid. (This can also be described as

active “high” or active “low”). This allows,

for example, a green LED to light when-

ever a valid signal is connected to the

selected SDI input, thus providing an

“input good” indication. Alternately, a red

LED could light when the selected SDI

input is not active, providing an “input fail”

indication.

Installation

Integration of the Model 5152 into a select-

ed application should prove quite simple,

only connecting SDI input and output sig-

nals, digital audio sources, as well as

DC power is required. Some applications

will also require connection to the module’s

data bus, GPI, and GPO functions. The

coaxial (BNC) input and output connec-

tions are compatible with most HD-SDI

and 3G-SDI signals. If the speciﬁc Model

5152 being installed also includes opti-

cal support one or two single-mode ﬁber

interconnections will be made. The ﬁber

connections utilize miniature LC plugs.

Up to four AES3-compliant unbalanced

digital audio signals can be connected

by way of a 9-pin D-subminiature (DE-9)

connector. Each of these four digital audio

signals supports two channels of audio.

The DC power source is nominal 12 volts

with an acceptable range of 10 to 18 volts.

It’s possible that the module will be part of

a local RS-485 data bus that’s associated

with a Studio Technologies’ Model 5190

Remote Access Module. If so, two ad-

ditional wires are required to connect the

module to the data bus. GPI and GPO con-

nections are made using a 3-pin header.

After all the connections have been com-

pleted the module can then be secured

into the designated mounting location.

Issue 5, September 2013 Model 5152 User Guide

Page 10 Studio Technologies, Inc.

Model 5152

Video Generator/Audio Embedder Module

Coaxial (BNC) SDI Output

The Model 5152 provides an SDI output

that utilizes a broadcast-standard BNC

socket. This output is referred to as the co-

axial (BNC) SDI output. Refer to Figure 2

for a detailed view of the connector’s loca-

tion on the rear of the module. The coaxial

(BNC) output, depending on operating

conditions, will be either a SMPTE-

compliant HD-SDI (1.485 Gb/s nominal)

or a 3G-SDI (2.97 Gb/s nominal) signal.

The exact format/rate combinations sup-

ported by the Model 5152 are listed in the

Speciﬁcations section of this guide.

Coaxial (BNC) SDI Input

An SDI source can be connected to

the Model 5152 by way of a broadcast-

standard BNC connector. This is referred

to as the coaxial (BNC) SDI input. Re-

fer to Figure 2 for a detailed view of the

connector’s location on the rear of the

module. The coaxial (BNC) input is com-

patible with SMPTE-compliant HD (1.485

Gb/s nominal) and 3G (2.97 Gb/s nominal)

SDI signals. It is not compatible with stan-

dard deﬁnition SD-SDI (270 Mb/s nominal)

signals. The exact format/rate combinations

supported by the Model 5152 are listed in

the Speciﬁcations section of this guide.

A conﬁguration setting must be made for the

coaxial (BNC) SDI input to be active. Refer

to the Conﬁguration section of this guide for

details.

Optical SDI Output

This section applies only when the speciﬁc

Model 5152 module being installed was con-

ﬁgured at the factory to provide an optical

output. A video SFP (small form-factor plug-

gable) optical module is used to provide the

optical SDI output. A range of SFP modules

can be installed in the “cage” at the back of

the Model 5152. These include transceiver

modules that have both an optical output

(transmitter) and an optical input (receiver),

as well as output-only (transmitter) modules.

The technical characteristics of the optical

Figure 2. Detailed rear view of the Model 5152 Video Generator/Audio Embedder Module showing the

MCU and FPGA boards

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