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Linear Acoustic LA-5180 Metadata Frame Sync/Generator Operation Manual

Introduction

6

1.1

Principles of Operation

Figure 1-1 shows the internal audio path of the LA-5180.

It should be noted that this diagram is a general representation of signal flow. Please
consult the appropriate section of this manual for specific functionality.

Figure 1-1

LA-5180

Metadata Frame Synchronizer and Generator

Simplified Block Diagram

1.2

Location of LA-5180

The Linear Acoustic LA-5180 Metadata Frame Synchronizer and Generator can be located
anywhere. Typical locations include audio mixing facilities or rooms, remote outside
broadcast (OB) trucks, transmission facilities, playout facilities, satellite facilities, etc... In
many cases, it may be located near AC-3 encoders such as a Dolby DP-569. Anywhere that
an error-free metadata signal is required is an ideal location for an LA-5180. As it will likely
be in a transmission environment, dual redundant power supplies and hard relay bypass
are provided for trouble free operation.

1.3

Future Updates

Software updates may become available in the future to add additional features and per-
formance. Updates will utilize the Ethernet port to accomplish the installation of upgraded
software, and a loader application will be provided for this purpose.

HD-SDI

Out

HD-SDI In

HD-SDI

Mux & Tx

CPU

(FPUI, I/O, PSU Mon, System Control)

Bypass

MD

Frame

Sync

HD-SDI

Rcvr/

Demux

RS-485 In

RS-485

Rcvr

RS-485

Out

Bypass

MD

Gen

Black Burst

Vref In

Clock

VANC

RS-485

FS

Gen

Pass

Insert

ETHERNET

GPI

GPO

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Содержание MetaMAXLA-5180

Страница 1: ...Model LA 5180 MetaMAX Series Audio Metadata Frame Synchronizer and Generator Operation Manual...

Страница 2: ......

Страница 3: ...5180 AC 3 Frame Synchronizer and Rate Shaper Operation Manual Release Date October 2007 Software Version 00 00 33 and later Linear Acoustic Inc Phone 717 735 3611 FAX 717 735 3612 Web www LinearAcous...

Страница 4: ...RE NOT COV ERED BY THIS WARRANTY PLEASE SAVE THE SHIPPING CARTON AND ALL PACKING MATERIALS FAIL URE TO RETURN UNIT IN ORIGINAL SHIPPING CARTON AND PACKING MATERIALS WILL RESULT IN A CHARGE FOR NEW SHI...

Страница 5: ...onnections 9 2 1 Unpacking and Inspection 9 2 2 Installation 9 2 3 Rear Panel 10 2 3 1 Connection Ports 10 2 4 Quick Setup Notes 11 Chapter 3 Applications 13 3 1 VANC Metadata Application 13 3 2 Stand...

Страница 6: ...6 5 5 Metadata Edit Rules 27 5 6 Other Features 29 5 7 Diagnostics 30 Chapter 6 Specifications 31 Chapter 7 Metadata 35 7 1 Metadata Structural Overview 35 7 2 Informational and Control Metadata 36 7...

Страница 7: ...2 LA 5180 Used as a stand alone metadata generator 14 3 3 Audio Metadata Analysis System AMAS typical setup 15 4 1 LA 5180 Menu Tree first half 17 4 2 LA 5180 Menu Tree second half 18 5 1 Main AMAS w...

Страница 8: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual viii...

Страница 9: ...ovided with Audio Metadata Analysis System AMAS to give users in depth metadata error reporting Individual metadata parameters are dis played two programs at a time with all programs being monitored i...

Страница 10: ...ayout facilities satellite facilities etc In many cases it may be located near AC 3 encoders such as a Dolby DP 569 Anywhere that an error free metadata signal is required is an ideal location for an...

Страница 11: ...the unit and drop it in the mail This will enable us to contact you if there are any software or documentation issues Also we are very interested in your feedback This unit was designed based on feed...

Страница 12: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual Introduction 8...

Страница 13: ...rds style to match shipping location Small bag with replacement fuses a DB 9 Male connector and shielded plastic backshell and a handy permanent marker For AMAS option DB9 M Y cable and AMAS software...

Страница 14: ...ice Linear Acoustic AEROMAX 5 1 Dolby DP 571 DP 569 etc GPI O This is the GPI O connection for parallel control of the unit There are four General Purpose GP Inputs and four GP Outputs whose function...

Страница 15: ...The LA 5180 requires only minimal setup to be up and running Apply power to BOTH IEC AC power inlet modules Note that once booted 30 seconds the front panel will display No Refer ence if no connection...

Страница 16: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual Connections 12...

Страница 17: ...tputs locally adjustable metadata AMAS Metadata Analysis accepts analog black burst reference LTC timecode meta data serial or VANC and Dolby E AES signal for guard band timing info and com municates...

Страница 18: ...igure 3 1 above shows the LA 5180 used as a stand alone metadata generator The only required input is Video Reference analog black burst and optionally a contact closure to change presets Note that vi...

Страница 19: ...to allow for real time correction of metadata issues This can be done on a parameter by parameter basis or automatically by simply overwriting all incoming parameters with preset values A E S D o lb...

Страница 20: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual Applications 16...

Страница 21: ...ing the change press the left Prev front panel button Like all Linear Acoustic products when in doubt you can simply use the Left Arrow Prev to back out towards the Main menu level Figure 4 1 LA 5180...

Страница 22: ...b y p g m c o n f ig 1 G 1 L F E L P F ilt E n a b le 1 G 1 S r n d P h S h ft E n a b le 1 G 1 S r n d 3 d B A tt n D is a b le 1 G 1 C n t r D w n m x 3 0 d B 1 G 1 S r n d D w n m x 3 0 d B 1 G 1 D...

Страница 23: ...ram Config setting and any program that is not currently being used will have dashes in place of metadata values NOTE Pressing the Right Next key while in any of the eight metadata status menus will i...

Страница 24: ...bypass relay thereby bypassing all pro cessing functions 4 1 6 Presets Menu The LA 5180 can store eight presets containing professional metadata and up to eight con sumer metadata programs in each Th...

Страница 25: ...ear in front of the following values PGM Config 5 1 5 1 2 4x2 etc Sets the Dolby E program configuration to any desired value Note that this setting affects the number of programs that will be created...

Страница 26: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual Menus 22...

Страница 27: ...included in the packing kit into the CD_ROM drive of the target computer The installation application should automatically launch and walk the user through the installation procedure If it does not au...

Страница 28: ...d Similarly field verbiage values may include an Error or Warning or Caution These values show the current status for the field 5 4 1 Main AMAS Window Figure 5 1 This window shows the overall high lev...

Страница 29: ...a fields detail for two programs You can select which 2 programs to display from the Program Fields drop down selectors at the top of the window If any of the normally green indicators from the Summar...

Страница 30: ...or Manual AMAS Software 26 Figure 5 2 Program Status window showing primary metadata programs 5 4 3 Activity Log Window This shows the same data as that sent to the Job File An at the beginning of a l...

Страница 31: ...ules Edit rules are used to determine when metadata fields should be flagged as invalid There is a stock set of rules embedded in the AMAS program You can also create and use your own custom sets of r...

Страница 32: ...value that another field has These dependencies can happen in relation to Program Config for all fields and Audio Coding Mode for Dolby Digital fields only To set a dependent edit rule select the des...

Страница 33: ...it Rules From File in the AMAS File menu 5 6 Other Features Users can select to log changes detected in a field by right clicking on the field in the AMAS Window or Program Status Window and selecting...

Страница 34: ...n the Settings Menu there is a Show Diagnostic Options menu item When clicked sev eral diagnostic options are available These options are not generally helpful for AMAS metadata monitoring They can pr...

Страница 35: ...ef Input Analog black burst NTSC or PAL passive loop through LTC Input Future Use AES I O Future Use Processing Metadata frame synchronization selectable silent frame insertion upon input error or los...

Страница 36: ...nual Specifications 32 Table 6 4 Environmental Specifications Operating Temperature 0o C to 50o C convection cooled Non Operating Temperature Storage 20o C to 70o C Humidity Up to 98 relative humidity...

Страница 37: ...utput on sys tem failure power off or via front user control Table 6 5 RS 485 Metadata I O Port Pinout Status GPI O Port 9 pin female D connector TTL compatible levels Table 6 6 GPI O Port Pinout Pin...

Страница 38: ...tion Manual Specifications 34 Ethernet Port The Ethernet port is a standard RJ 45 female connector that supports 10BASE T This connector is currently reserved for software updates but will support mon...

Страница 39: ...ample A program is being created and it contains 5 1 channels of main audio plus mono SAP and a mono Visual Descriptive versions The Professional Metadata is set for a 5 1 1 1 Pro gram Configuration 5...

Страница 40: ...he Bitstream Mode parameter describes the audio service provided in the bitstream This information may be used by certain com ponents in the audio system Control These parameters direct how the decode...

Страница 41: ...r Downmix Level cmixlev X Surround Downmix Level smixlev X Surround Mode dsurmod X Audio Production Info X Mix Level X Room Type X Copyright X Original Bitstream X Encoder Control Metadata RF Overmodu...

Страница 42: ...hout having to adjust the volume control during commercial breaks Using that standard for all content whether conveyed by broadcast television DVD or other media enables the consumer to switch between...

Страница 43: ...ding dy namic range Rather than simply compressing the audio program to work well in the poor est listening environments Dolby Digital encoders can calculate Dynamic Range Control DRC information and...

Страница 44: ...ng of the dialogue level parameter is essential before selecting a DRC profile Line Mode dynrg Line Mode offers these features Low level boost compression scaling is allowed High level cut compression...

Страница 45: ...ith analog television broadcasts and premium movie channels In some situations it may be necessary to further constrain signal peaks above the average dialogue level so that there is less than 20 dB o...

Страница 46: ...B Boost Range 43 dB to 31 dB 2 1 ratio Null Band Width 5 dB 31 dB to 26 dB Early Cut Range 26 dB to 16 dB 2 1 ratio Cut Range 16 dB to 4 dB 20 1 ratio Music Light No early cut range Max Boost 12 dB be...

Страница 47: ...o guide its generation of the actual Line Mode and RF Mode gain control values dynrng and compr respectively Once the profile is set and is used by the encoder the only information available in the me...

Страница 48: ...e surround channels and adds them out of phase to the left channel and in phase to the right channel This allows a consumer matrix decoder to reconstruct the L C R S channels for a Pro Logic home thea...

Страница 49: ...uncer levels Using a loudness meter such as a Dolby LM100 the dialnorm value can be measured and inserted using the LA 5180 Once set it is not necessary to change this value for the duration of the pr...

Страница 50: ...m the final mix stage to the theatre Dialog loudness was chosen as the anchor or reference for the soundtrack and speaker positions and calibration levels were carefully chosen Today it is possible to...

Страница 51: ...es are stored as 2 channel LtRt and creation and storage of metadata Experience has shown that the creation of metadata has not hampered or greatly complicated standard mixing practices As with other...

Страница 52: ...ociated Visual Impaired program 7 5 Summary All of the flexibility and control afforded by audio systems that utilize metadata absolutely requires the producer to correctly set the parameters because...

Страница 53: ...7 dB 3 dB 0 707 dB 3 dB N A N A N A Srnd Dwnmix Lev 0 707 dB 3 dB 0 707 dB 3 dB N A N A N A Dolby Srnd Mode N A N A Dolby Surround Dolby Surround N A or Dolby Surround Audio Prod Info No Yes Yes No Ye...

Страница 54: ...Linear Acoustic LA 5180 Metadata Frame Sync Generator Operation Manual Metadata 50...

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