Wegener Communications 4422 User manual

TECHNOLOGY PARK / JOHNS CREEK

11350 TECHNOLOGY CIRCLE

DULUTH, GEORGIA 30097-1502

(770) 814-4000 FAX (770) 623-0698

Data, drawings, and other material

contained herein are proprietary to

Wegener Communications, Inc., and

may not be reproduced or duplicated in

any form without the prior permission

of Wegener Communications, Inc.

When ordering parts from Wegener

Communications, Inc., be sure to include

the equipment model number, equipment

serial number, and a description of the

part.

In all correspondence with Wegener

Communications, Inc., regarding this

publication, please refer to UTY4422-002B.

Note: Features of the product described

herein are covered by U.S. Patent #

4,985,895.

First Edition: February 2000

Revised:

A

ugust

2

00

2

Instruction Manual

UNITY4422™

MPEG VIDEO DECODER

with

DVB-ASI INPUT CARD

Page 2

UTY4422-002 Page 2 of 72

This Page Intentionally Left Blank

Page 3

Page 3 of 72 UTY4422-002

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CAUTION

As this unit is intended to interface with other electrical/electronic systems, proper

engineering practices must be adhered to during installation and check-out.

All AC power and ground must be installed in accordance with National Electric

Code Standards as to conductor size and limitations (see NFPA 70, articles 200-

280, as amended, if required), and lightning protection must be provided.

All RF interconnections must be properly shielded to prevent ingression or

egression of potential interfering sources to existing services.

Any damage to this unit caused by improper wiring/interconnections will void any

warranty extended.

All Wegener Communications products are warranted against defective materials and workmanship for

a period of one year after shipment to customer. Wegener Communications' obligation under this

warranty is limited to repairing or, at Wegener Communications' option, replacing parts, subassemblies,

or entire assemblies. Wegener Communications shall not be liable for any special, indirect, or

consequential damages. This warranty does not cover parts or equipment which have been subject to

misuse, negligence, or accident by the customer during use. All shipping costs for warranty repairs will

be prepaid by the customer. There are no other warranties, express or implied, except as stated

herein.

WARRANTY

Page 4

UTY4422-002 Page 4 of 72

This Page Intentionally Left Blank

Page 5

Page 5 of 72 UTY4422-002

About This Manual

This manual was composed in Microsoft Word 97, and is configured to be used most easily as an

electronic document. It can be printed and used as a hard copy, but some features, such as links,

are not accessible in that mode.

If viewing the electronic version, we recommend you safeguard the original version to avoid the

effects of somehow altering your master copy.

1.

Cross-references

Cross-references are internally linked for easy access. If you are viewing the electronic version

of this manual, and see text that is blue and underlined, such as APPENDIX A you can “click”

your mouse on that text and “hyperlink” to that section.

When you are ready to return to the previous section, “click” on the web toolbar “back” arrow

and return. The web toolbar should appear automatically when you use a link, but if it does not

you can invoke it from Toolbars on the View menu.

Because many users will print the manual, we have also included the page numbers for most

links.

2.

Table of contents

You can also link from the Table of Contents to any listed page. This also applies to the List of

Tables and List of Illustrations. Just “click” on the page number for any section, table, etc., you

want to move to. Returning to the Table of Contents works just as in Number 1 above.

3.

Other Viewing Methods

In the electronic Word version, there are several methods of moving about a document.

“Clicking” Document Map or Online Layout on the View menu will open a window showing the

document outline. This is similar to the Table of Contents, and will allow you to move about the

document by “clicking” on a section number. It has the advantage of not going away when you

move to another section. It also has the disadvantage of taking up screen space when it is open.

Another way to better view the document is to “click” on the “Up arrow” icon on the Web

Toolbar. This will minimize most of the other toolbars, allowing you to use more of the screen

for viewing the manual.

See Section 1.9 (Page 14) for more information on manual feedback.

Page 6

UTY4422-002 Page 6 of 72

This Page Intentionally Left Blank

Page 7

Page 7 of 72 UTY4422-002

TABLE OF CONTENTS

ABOUT THIS MANUAL........................................................................................5

SECTION 1 GENERAL INFORMATION ............................................11

1.1 GENERAL....................................................................................................................... 11

1.2 INTRODUCTION........................................................................................................... 11

1.3 UNPACKING AND INSPECTION .............................................................................. 11

1.4 INSTALLATION INSTRUCTIONS ............................................................................ 11

1.4.1 ELEVATED OPERATING AMBIENT .............................................................................. 11

1.4.2 R

EDUCED

A

IR

F

LOW

.................................................................................................. 12

1.4.3 M

ECHANICAL

L

OADING

............................................................................................. 12

1.4.4 CIRCUIT OVERLOADING ............................................................................................. 12

1.4.5 R

ELIABLE

E

ARTHING

................................................................................................. 12

1.5 PHYSICAL ENVIRONMENT ...................................................................................... 12

1.6 SECURITY LABELS ..................................................................................................... 12

1.7 PHYSICAL SPECIFICATIONS................................................................................... 13

1.8 TECHNICAL SUPPORT............................................................................................... 13

1.9 MANUALS ......................................................................................................................14

SECTION 2 SYSTEM CONFIGURATION ..........................................15

2.1 UNIT OVERVIEW......................................................................................................... 15

2.2 BLOCK DIAGRAM DISCUSSION.............................................................................. 15

2.3 SPECIFICATIONS......................................................................................................... 17

2.3.1 TRANSPORT DEMUX ................................................................................................ 17

2.3.2 S

YSTEM

P

ROCESSOR

.................................................................................................. 17

2.3.3 AUXILIARY DATA PROCESSING.................................................................................. 17

2.3.4 COMPOSITE VIDEO ENCODER..................................................................................... 17

2.3.5 V

IDEO

S

PECIFICATIONS

.............................................................................................. 18

2.3.6 AUDIO SPECIFICATIONS ............................................................................................. 18

2.3.7 SERIAL ASYNC DATA, MONITOR AND CONTROL OF UNIT........................................ 19

2.3.8 OPTION MODULES FOR EXPANSION PORTS ................................................................ 19

2.3.9 AC POWER ................................................................................................................ 19

2.3.10 LNB DC POWER ....................................................................................................... 20

2.4 LOCAL CONTROLS AND INDICATORS................................................................. 20

2.4.1 FRONT PANEL ............................................................................................................ 20

2.4.1.1 Front Panel Display.........................................................................................................................20

2.4.1.2 Front Panel Keypad.........................................................................................................................20

2.4.1.3 Indicator LED’s ..............................................................................................................................21

2.4.2 REAR PANEL .............................................................................................................. 21

2.4.2.1 DVB/ASI Module LEDs.................................................................................................................21

2.4.2.2 Standard DVB Synchronous Interface............................................................................................21

2.5 EXTERNAL INPUTS AND OUTPUTS ....................................................................... 22

2.5.1 BALANCED AUDIO OUTPUTS...................................................................................... 23

2.5.2 FCC-M

ANDATED

S

UPPRESSION OF

R

ADIATED

E

MISSIONS

........................................ 23

2.5.3 ALARM RELAY AND ADDRESSABLE CONTACT CLOSURES ......................................... 24

Page 8

UTY4422-002 Page 8 of 72

2.5.4 AES/EBU C

ONNECTOR

P

INOUT

................................................................................ 24

2.6 EXPANSION CARD CONFIGURATION................................................................... 27

2.6.1 B

ALANCED

A

UDIO

E

XPANSION

C

ARD

........................................................................ 27

2.6.1.1 Audio Card Jumper Configuration..................................................................................................27

2.6.1.2 Audio Card Label Instructions........................................................................................................27

2.6.2 S

YNC OR

ASI O

UTPUT

D

ATA

C

ARD

J

UMPER

C

ONFIGURATION

.................................. 27

SECTION 3 OPERATION ......................................................................29

3.1 MODES OF OPERATION ............................................................................................ 29

3.1.1 P

OWER

U

P

.................................................................................................................. 29

3.1.2 BOOT FAIL ................................................................................................................. 29

3.1.3 ALARM, WARNING, & NORMAL ................................................................................ 29

3.2 LED & ALARM / WARNING CONDITIONS............................................................ 30

3.2.1 CARRIER (GREEN)...................................................................................................... 30

3.2.2 RF LEVEL (GREEN) ................................................................................................. 30

3.2.3 MPEG

(G

REEN

)......................................................................................................... 30

3.2.4 C

UE

(G

REEN

) ............................................................................................................. 30

3.2.5 COMPEL™ (GREEN)................................................................................................ 30

3.2.6 A

UTHORIZED

(G

REEN

)............................................................................................... 30

3.2.7 A

LARM

(R

ED

) ............................................................................................................ 31

3.2.8 WARNING (AMBER) ................................................................................................... 31

3.3 RELAYS .......................................................................................................................... 32

3.4 PROGRAM SELECTION ............................................................................................. 32

3.5 AUDIO HANDLING ...................................................................................................... 32

3.6 SOURCES OF CONTROL............................................................................................ 33

3.6.1 L

OCAL

C

ONTROL

E

NABLED

/D

ISABLED

...................................................................... 33

3.6.2 COMPEL™ .............................................................................................................. 33

3.6.3 TERMINAL.................................................................................................................. 33

3.6.4 M

ODEM

...................................................................................................................... 33

3.6.5 PAL / NTSC SELECTION ........................................................................................... 33

3.7 SERIAL PORT - COMMAND SYNTAX..................................................................... 34

3.8 RECEIVER FUNCTIONS............................................................................................. 35

3.8.1 PERMS, TEMPS, SEARCHING & SETTINGS .................................................................. 35

3.8.2 SIGNAL QUALITY MONITORING ................................................................................. 36

3.8.3 OVERVIEW ................................................................................................................. 37

3.8.4 PUSH BUTTON FUNCTIONS......................................................................................... 38

3.8.5 E-MAIL....................................................................................................................... 41

APPENDIX A TERMINAL/MODEM COMMANDS ..........................43

A.1 STATUS COMMANDS.................................................................................................. 43

A.1.1 H [COMMAND] ........................................................................................................... 43

A.1.2 R TYPE [PAGE] ........................................................................................................... 43

A.2 CONTROL COMMANDS............................................................................................. 44

A.2.1 ABORT ..................................................................................................................... 44

A.2.2 ADDS LOCATION SETTINGS......................................................................................... 44

A.2.3 DELS LOCATION ........................................................................................................ 44

A.2.4 MUTE [

SOURCE

][

SOURCE

]........................................................................................ 44

Page 9

Page 9 of 72 UTY4422-002

A.2.5 OH............................................................................................................................. 45

A.2.6 PC

DEVICE BAUD PARITY

............................................................................................. 45

A.2.7 PERM

SETTINGS

......................................................................................................... 45

A.2.8 PERMCH LOCATION.................................................................................................. 45

A.2.9 PW PASSWORD ........................................................................................................... 45

A.2.10 RE

STATE

[

NUMBER

]................................................................................................... 45

A.2.11 SETAUDIO

PORT ROUTE

[

PROGRAM

] [

ATTEN

] .......................................................... 45

A.2.12 SETTIMEOUT SOURCE TIME .................................................................................... 46

A.2.13 TEMP

SETTINGS TIME

................................................................................................. 46

A.2.14 TEMPCH LOCATION TIME.......................................................................................... 46

A.2.15 UNMUTE [SOURCE][SOURCE].................................................................................. 46

APPENDIX B FRONT PANEL DISPLAY ............................................47

B.1 HOME SCREEN............................................................................................................. 47

B.2 UNIT SERIAL NUMBER.............................................................................................. 47

B.3 EMAIL............................................................................................................................. 48

B.4 HARDWARE SETUP .................................................................................................... 48

B.4.1 CURRENT SETTINGS ................................................................................................... 49

B.4.2 C

HANNEL

S

ELECTION

................................................................................................ 49

B.4.3 E

DIT

C

HANNEL

.......................................................................................................... 49

B.4.4 ASPECT RATIO SETTINGS ........................................................................................... 50

B.4.5 A

UDIO

S

ETTINGS

........................................................................................................ 50

B.4.6 S

ERIAL

P

ORTS

............................................................................................................ 50

B.4.7 TEST MODE................................................................................................................ 51

B.4.8 LNB DC P

OWER

....................................................................................................... 51

B.4.9 U

NIT

R

ESET

............................................................................................................... 52

B.5 STATUS REPORTS ....................................................................................................... 52

B.5.1 S

ETTINGS

S

TATUS

...................................................................................................... 52

B.5.2 ASI I

NPUT

S

TATUS

.................................................................................................... 52

B.5.3 MPEG STATUS .......................................................................................................... 55

B.5.4 S

ETTINGS

T

ABLE

........................................................................................................ 56

B.5.5 NC STATUS................................................................................................................ 56

B.5.6 PARAMETER STATUS.................................................................................................. 58

B.5.7 SERIAL PORT STATUS ................................................................................................ 59

B.5.8 RELAY STATUS .......................................................................................................... 60

B.6 VERSION ........................................................................................................................ 60

B.7 NAVIGATION HELP .................................................................................................... 61

APPENDIX C GLOSSARY OF TERMS ...............................................63

APPENDIX D RMA REQUEST .............................................................65

LIST OF ILLUSTRATIONS

Page 10

UTY4422-002 Page 10 of 72

F

IGURE

1. UNITY4422 B

LOCK

D

IAGRAM

.................................................................................... 16

F

IGURE

2. F

ERRITE

B

EAD

I

NSTALLATION

..................................................................................... 25

F

IGURE

3. UNITY4422 F

RONT

P

ANEL

......................................................................................... 26

FIGURE 4. UNITY 4422 REAR PANEL .......................................................................................... 26

LIST OF TABLES

TABLE 1. PHYSICAL SPECIFICATIONS............................................................................................ 13

TABLE 2. VIDEO RESOLUTION REQUIREMENTS............................................................................. 18

T

ABLE

3. V

IDEO

S

PECIFICATIONS

................................................................................................. 18

T

ABLE

4. A

UDIO

S

PECIFICATIONS

................................................................................................. 19

TABLE 5. SERIAL ASYNC PORT REQUIREMENTS......................................................................... 19

T

ABLE

6. F

RONT

P

ANEL

LED’

S

.................................................................................................... 21

T

ABLE

7. S

ERIAL

1

AND

S

ERIAL

2 P

ORT

P

IN

-

OUTS

....................................................................... 21

T

ABLE

8. I

NPUT AND

O

UTPUT

C

ONNECTORS

................................................................................ 22

T

ABLE

9. A

NALOG

A

UDIO

C

HANNEL

1

AND

C

HANNEL

2 C

ONNECTOR

P

INOUTS

........................... 23

T

ABLE

10. AES/EBU D

IGITAL

A

UDIO

P

INOUTS

........................................................................... 24

T

ABLE

11. LED

AND

A

LARM

C

ONDITIONS

................................................................................... 30

T

ABLE

12. A

UDIO

H

ANDLING

....................................................................................................... 32

TABLE 13. SERIAL PORT DEVICE COMBINATIONS......................................................................... 34

T

ABLE

14. S

ERIAL

P

ORT

S

ETTINGS

............................................................................................... 34

TABLE 15. SERIAL PORT OPERATION............................................................................................ 35

TABLE 16. GROUP SETTINGS ........................................................................................................ 36

T

ABLE

17. U

NIT

S

IGNAL

Q

UALITY

................................................................................................ 36

TABLE 18. DISPLAY MODES ......................................................................................................... 37

TABLE 19. PUSH BUTTON FUNCTIONS .......................................................................................... 38

T

ABLE

20. LC D

ISPLAY

M

ENUS

................................................................................................... 39

Page 11

Page 11 of 72 UTY4422-002

SECTION 1

GENERAL INFORMATION

1.1 GENERAL

The purpose of this manual is to describe the proper installation and operation of the Wegener

Communications UNITY4422 MPEG Video Decoder.

1.2 INTRODUCTION

The UNITY 4422 unit is an MPEG decoder designed to receive its input from a DVB-ASI input

source. These inputs include the new 4:2:0 and 4:2:2 chroma formats, as well as the traditional

4:3 and new 16:9 aspect ratios. The input is a DVB-compliant signal, which is processed to

produce NTSC or PAL video, audio, e-mail (front panel text) output, and electronic-relay cueing

signals. The unit is fully network-controlled via the Wegener Communications, Inc. (WCI)

COMPEL

 control system.

The optional decryption feature allows for use of WCI

COMPEL

Conditional Access

(COMPEL-CA™). Authorization of each unit is under network control.

In addition to network control, the unit features a front-panel LCD interface, for unit control and

viewing local status information. In addition, limited control of the unit (if allowed by the

COMPEL network) may be implemented via serial port, connecting either to a local terminal

or (via phone modem) to a remote terminal.

The UNITY4422 normally has expansion ports for two add-in modules. This unit, the DVB-

ASI Input model, has the DVB-ASI Input board mounted as Module 1. Therefore, there is only

room for one additional add-in module. Contact the Wegener Sales Department about available

options.

1.3 UNPACKING AND INSPECTION

Carefully unpack the unit and inspect it for obvious signs of physical damage that might have

occurred during shipment. Any damage claims must be reported to the carrier immediately. Be

sure to check the package contents carefully for important documents and materials.

1.4 INSTALLATION INSTRUCTIONS

To avoid damage to this and other equipment, or personal injury, the following items should be

strictly observed.

1.4.1 Elevated Operating Ambient

If equipment is installed in a closed or multi-unit rack assembly, the operating ambient of the

rack may be greater than the room ambient. Therefore, considerations should be given to the

TMRA, or Temperature inside the Mounting Rack, and not just inside the room.

Page 12

UTY4422-002 Page 12 of 72

1.4.2 Reduced Air Flow

Installation of the equipment in a rack should be such that the amount of airflow required for safe

operation of the equipment is not compromised.

1.4.3 Mechanical Loading

Mounting of equipment in a rack should be such that a hazardous condition is not achieved due

to uneven loading.

1.4.4 Circuit Overloading

Consideration should be given to the connection of the equipment to the supply circuit and the

effect that overloading of circuits could have on overcurrent protection and supply wiring.

Appropriate consideration of equipment nameplate ratings should be used when addressing this

concern.

1.4.5 Reliable Earthing

Reliable earthing of rack-mounted equipment should be maintained. Particular attention should

be given to supply connections other than direct connection to the Branch (use of power strips).

1.5 PHYSICAL ENVIRONMENT

See specific statements in Section 1.4 (Page 11).

Mount the UNITY4422 unit in a standard EIA 19-inch equipment rack located in a clean, dry

environment, and do not place unsupported equipment on the unit. Make sure that total rack

power consumption does not exceed the limits of the AC branch circuit, and that a reliable earth

safety ground is maintained. The unit will meet the full 10-40

o

C operating temperature

specification only if adequate clearance around vent-holes is provided. The units may be

arranged without empty space between them, as long as enough rack ventilation is provided to

prevent severe heat buildup. Please note the maximum per-unit power dissipation of 45 watts.

1.6 SECURITY LABELS

The UNITY4422 uses security labels over some of the screws. There are no user-serviceable

components within the unit, and tampering with the security labels or opening the units will void

your warranty. If you have questions, contact Wegener's customer service department at the

address, phone, or fax numbers listed in Section 1.8 (Page 13).

* * * WARNING * * *

When connecting cables to “F” type connectors apply a force of no more than 12 inch

lb. (Finger tight). Avoid connecting adapters directly to “F” type connectors. Use at

minimum a 1-foot flexible extension cable between “F” type connectors and adapters.

Page 13

Page 13 of 72 UTY4422-002

1.7 PHYSICAL SPECIFICATIONS

The operating temperature of the unit is +10°C to +40°C in still air with unblocked side vents.

(The unit is fan-cooled.)

Table 1. Physical Specifications

Parameter Description

Size 19”W x 1.75”H x 13.75”D

48.26 Cm W x 4.8 Cm H x 34.9 Cm D

Weight 10.5 Pounds (4.8 kg)

Operating Temperature +10°C to +40°C

+50°F to +104°F

Power Requirements 115VAC, 60Hz, 0.8A Typ., or

230VAC, 50Hz, 0.5A Typ.

1.8 TECHNICAL SUPPORT

In the event the unit fails to perform as described, contact Wegener Communications Customer

Service at (770) 814-4057, FAX (678) 624-0294, or e-mail “[email protected]”.

To return a product for service:

1. Obtain a Return Material Authorization (RMA) number by completing and faxing a copy of

the RMA Form (See Appendix D (Page 65) to (678) 624-0294. You may e-mail the same

information instead to:

[email protected]

2. Plainly write the RMA number on the OUTSIDE of the product-shipping container.

NOTE: Writing the RMA number on the outside of the shipping container will

help us to return your equipment to you sooner. Thank you.

3. Return the product, freight prepaid, to the address below:

Service Department RMA# ________

Wegener Communications, Inc.

359 Curie Dr.

Alpharetta, GA 30005

NOTE: All returned material must be shipped freight prepaid.

C.O.D. shipments will not be accepted.

Please contact Customer Service at one of the numbers above if you have any questions

regarding service procedures.

Page 14

UTY4422-002 Page 14 of 72

1.9 MANUALS

If you have any suggestions concerning this, or any Wegener Manual, you can E-mail them to

[email protected]. If you would rather mail them, please do so to the address shown

below. Our preference is that you copy the page(s) in question, mark it up, and fax or mail us the

copy. We do appreciate constructive criticism. The Fax Number is 770-497-0411.

Attn: Manuals

Wegener Communications, Inc.

11350 Technology Circle

Duluth, GA 30097

Page 15

Page 15 of 72 UTY4422-002

SECTION 2

SYSTEM CONFIGURATION

2.1 UNIT OVERVIEW

The UNITY 4422 features several separate hardware components: The DC switching power

supply, the main motherboard, a DVB-ASI input card, front-panel keypad controller card, and a

front-panel LCD assembly. The DC switching power supply provides all internal regulated DC

power. The unit’s input is to the ASI card, mounted as Module 1. That card has two BNC input

connectors and an internal (inside the chassis) connector that connects its output to the

motherboard. This output data stream feeds the main motherboard, which demultiplexes the

selected video and audio elemental streams. These are, in turn, de-compressed and converted

back to the original analog source material for output. Meanwhile, the user may query the unit

using the front-panel keypad for input and the LCD to read the returned status information.

2.2 BLOCK DIAGRAM DISCUSSION

Refer to Figure 1 (Page 16) for the following discussion.

The DVB-compliant receiver card detects the incoming 270 Mbit ASI carrier. The MPEG sync

is detected. The decoded byte stream is output to the main board.

The input to the main board is the multiplexed MPEG2 transport stream. The resulting “clear”

transport stream is then fed to the transport demultiplexer. This device selects the component

elemental stream for selected video and audio programs, as well as the network control data

streams. The selected video data is passed to an MPEG video decoder, which converts the

signal to linear digital video. This is then converted to analog NTSC/PAL in a final encoder for

output. Meanwhile, the selected MPEG compressed audio stream is also routed to a combined

decompression and digital-to-analog converter (DAC) IC. The output is one stereo pair of audio

signals (L and R) on Channel 1 at the back panel. In addition to the first stereo pair, a digital

signal processor monitors and demultiplexes another selected digital audio stream, which is also

decoded and output as the stereo pair on Channel 2 at the back panel.

Page 16

UTY4422-002 Page 16 of 72

Figure 1. UNITY4422 Block Diagram

VIDEO DEC

EXPANSION BUS CONNECTORS

27 M

Hz Clock Distributions:

27M1A

-->

EXPA (Audio)

27M1D1

-->

D1 (Video)

27M2

-->

XC5204

27M3

-->

80C51XA

27M4

-->

CPU_2096, TMS2490

27M5

-->

DSP_2096

27M6

-->

CS4920_1, CS4920_2

VCLK

-->

CL9100

GCLK

-->

CL9100

27M7

-->

XC5202

27M

1M

-->

EXPM (M

PEG2)

CHCLK (7.5 MHz) Distributions:

CHCLKA

-->

DVB Receiver Module

CHCLKB

-->

CL9110

CHCLKC

-->

XC5202

EC

LK

-->

EXPM

20MHz

-->

DSP_320C203

CLOCK

27 Mhz

256K x 16

32K x 8

256K x 16

128K x 8

(32K x 8)

128K x 8

(32K x 8)

128K x 8

AUDIO

DEC 2

AUDIO

DEC 1

DEMUX

REG

20.000 MHZ

VCXO

VIDEO

ENCODER

COMPOSITE

VIDEO

CPU

FLASH 1

FLASH 2

Control

Addr/Data

DSP

DSP CTL

Address

Data

MPEG2 A / V

POWER

SUPPLY

120 VAC

SRAM

MPEG2

TRANSPORT

AUDIO 2

CONTACT

CLOSURE

DECRYPTION

I

2

C BUS

I

2

C BUS

I

2

C BUS

I

2

C BUS

ALARM

RELAY

R/X CONTROL

CS

R/X CONTROL

R/X DATA IN

FRAM

SRAM

FLASH (DEBUG)

TX1

AUDIO

3 & 4

16

HS BUS

23

HBUS

I

2

C BUS

IRQ / CTL

L_Addr

CLK_EN

RESET

5 & 6

SECURE MC

2048 X 8

DB-9

PLL

FIFO

DUART

MPEG2

RATE

BUFFER

MPEG2

AUDIO

INT

POWER ON -

WATCHDOG

RESET

LNB

DVB RECEIVER

MODULE (OR

DECRYPTION

EXPANSION)

-12V

+5V

+24V

+5V

LNB

+3.3V

+12V

GND

+24V

+5V

DB-9

I/O PORT

AUDIO 2

I

2

C BUS

I

2

C BU

S

A

C

D

A

LEFT

RIGHT

LEFT

RIGHT

DECRYPTION

SERIAL

PORT

DRAM

TO FRONT PANEL

DISPLAY &

PUSHBUTTONS

I

2

C BUS

RJ-11

Page 17

Page 17 of 72 UTY4422-002

The main host processor runs the control system on the main board. This processor interfaces

with the

COMPEL

™ network as well as local users and then controls and monitors the unit’s

operations. To do its job, this processor accesses the control data streams recovered from the

main transport demultiplexer. One of these may be a Conditional Access data stream (if used).

The main processor sends this data to a separate secure microprocessor, which looks to see if its

unit serial number is authorized to receive the broadcast signal and, if so, recovers the secret

keys for decrypting the incoming encrypted transport stream. Meanwhile, the main host

processor also communicates with several peripheral devices. It manages the data passed

to/from the front-panel keypad controller (which lights status LED's, manages an LCD display,

and reads back keypresses). It manages two serial ports that allow for use of a terminal, modem,

printer, or auxiliary data device as well as the display and printing of local e-mail. Additionally,

it controls the L-band receiver daughtercard and any installed Options Modules.

For maximum flexibility, and to make value-added upgrades easily possible, the operating unit

software is stored in flash memory and may be dynamically replaced via the local serial port or

from the satellite network control channel.

2.3 SPECIFICATIONS

The UNITY4422 can be factory-configured for a tuner-QPSK Demodulator input, or for a DVB-

ASI Input. The difference is whether the tuner card or DVB card is installed. The unit can auto-

detect whether a tuner or DVB input card is installed in order to do field troubleshooting, but if a

field modification is being done the boot code will need to be changed. Also, when the boot

code is changed the app and dsp codes will need to be loaded into the unit. This allows one

software package to be installed in a number of different unit configurations, and simplifies

updating that software.

2.3.1 Transport DEMUX

The transport demux is used to extract the desired video and audio streams from the multiplexed

data stream.

2.3.2 System Processor

The main system processor is an extended architecture processor, and uses flash memory for

microcode storage with download capability via either terminal or satellite channel.

The unit also has an MPEG2 video processor

ASIC

, and an audio processor

ASIC

.

2.3.3 Auxiliary Data Processing

An asynchronous user-data stream embedded in the transport stream may be routed to SERIAL 1

or SERIAL 2 ports under user or network control.

2.3.4 Composite Video Encoder

The unit supports the following video resolutions:

Page 18

UTY4422-002 Page 18 of 72

Table 2. Video Resolution Requirements

NTSC PAL

720H x 480V (Full Resolution) 720H x 576V

544H x 480V (3/4 Resolution) 544H x 576V

480H x 480V 480H x 576V

352H x 480V (1/2 Resolution) 352H x 576V

352H x 240V 352H x 288V

2.3.5 Video Specifications

NTSC video performance is specified below at a 9 Mbps video PES rate, 720Hx480V

resolution.

Table 3. Video Specifications

Parameter Production Specification

Signal Type

NTSC

PAL

Output Level

1.0 Vp-p, ± 2% 1.0 Vp-p, ± 2%

Output Impedance 75 Ohms 75 Ohms

Multiburst NTSC From 0.5 to 4.2

MHz: ≤+0/−1.0 dB

From 0.5 to 4.8

MHz: ≤+0/−1.2 dB

Differential Gain

≤ 4 IRE ≤ 4 IRE

Differential Phase

≤ 1.5°≤ 1.5°

L/C Gain Inequality

≤ ± 4 IRE ≤ ± 4 IRE

L/C Delay Inequality

≤ ± 26 nS ≤ ± 26 nS

Line Time W-form Distortion

≤ 1 IRE p-p ≤ 1 IRE p-p

Field Time W-form Distortion

≤ 3 IRE p-p ≤ 3 IRE p-p

Video

S/N Weighted

≥

56 dB

≥

56 dB

2.3.6 Audio Specifications

Audio performance is specified below at a compressed-audio PES rate of 256 kbps.

Page 19

Page 19 of 72 UTY4422-002

Table 4. Audio Specifications

Parameter Specification (each channel of stereo pair)

Output Level-MAX PPL +18.0 ±0.5 dBm into 600 ohms, at 0 dB

attenuation level

Impedance Balanced: < 60 Ohms

Frequency Response 20 Hz to 20 kHz, + 0.5/-1.5 dB

50 Hz to 15 kHz, ± 0.5 dB

Phase accuracy

50 Hz to 15 kHz, ≤± 2°from linear phase

Harmonic Distortion (1 kHz

test-tone, 1 dB below PPL)

≤ 0.5 %

S/N Ratio

m 80 dB (22 Hz to 20 kHz) unweighted

Dynamic Range 16 bits

A/V Sync

≤

±

50 mS error

2.3.7 Serial ASYNC Data, Monitor and Control of unit

Two serial ports (SERIAL 1 and 2) for data to/from the unit have the following characteristics:

Table 5. Serial ASYNC Port Requirements

Parameter Specification

Signal Type Serial Asynchronous Character Data

Levels RS-232

Mode Always 8 data-bits, one start, one stop-bit, half-duplex.

Pin-outs DCE to AT-compatible serial port, 3-wire subset (Rxd,

Txd, and Ground) without handshake lines

2.3.8 Option Modules for Expansion Ports

The unit has one expansion slot, which can be used as a high-speed or low-speed slot. Using it

as a high-speed expansion port provides the transport layer multiplexed stream while using it as

a low-speed expansion port provides the filtered packet data. An I

2

C bus provides control for

option modules. The specifications for individual modules are included in documentation for the

module.

The RF Switch is not an option when the DVB-ASI Input Card is installed.

2.3.9 AC Power

The unit features a universal-input power supply. AC line power is fed into a standard IEC jack.

The nominal inputs are 115 or 230 VAC ± 10% at 50-60 Hz ± 2%. The total AC current

consumption with max LNB DC load is 0.8A at 115 VAC, and 0.5A at 230 VAC. See Table 1

(Page 13).

Page 20

UTY4422-002 Page 20 of 72

2.3.10 LNB DC Power

The unit may feed DC power to an external antenna-mounted LNB using either the RF-In

connector’s center-pin or a terminal on the rear-panel terminal strip (with an external DC power

inserter). The nominal voltage supplied is +17 to +24 VDC, while the maximum load current is

250 mA. The output is short-circuit protected by a thermal fuse. An internal jumper (J27) is

used to enable/disable DC power on the RF-In center-pin. Once that jumper has been set, the

LNB power can be turned on via the front panel menu.

LNB DC Power is available in all audio and video modes.

2.4 LOCAL CONTROLS AND INDICATORS

2.4.1 Front Panel

See Figure 3 (Page 26) for a view of the front panel.

2.4.1.1 Front Panel Display

The front-panel includes a 2-line by 20-character display to support the monitor/control

interface. See Table 20 (Page 39), and APPENDIX B for details on the messages displayed

there, as well as the menus supporting the keypad interface described in Section 2.4.1.2 (Page

20).

2.4.1.2 Front Panel Keypad

The front-panel includes a keypad for user input. The keys are right, left, up, down arrows and

SELECT, and ENTER. See Section 3.8.4 (Page 38), and APPENDIX B (Page 47) for details on

their use.

Page is loading ...

Wegener Communications 4422 User manual

Related papers

Other documents