Leitch MXA-6800-AESC, MXA-6800-AES-70C, MXA-6800-AES-68B, MXA-6800-AES-70B, MXA-6801-A2-68 Installation And Operation Manual
...
6800/7000 Series
Audio and Video
Multi-Demultiplexing
Products
Installation and Operation Manual
175-000061-00
Edition B
Trademarks and Copyright
ADAC, ADCOE, BO/S, Command Control System (CCS), DigiBus,
DigiPeek, Digital Glue, DPS, DigiWorks, DTV Glue, Engineering The
Big Picture, EventWORKS, EZ HD, Focused on the Future, Genesis,
HDTV Glue, HEDCO, Innovision, ISIS, JUNO, LeFont, Leitch, Leitch
Network Systems, LNS, LogoMAX, LogoMotion, Media File, MediaPort,
MIX BOX, Monarch, Motion File, NEO, OPUS, PanelMAPPER, Pilot,
Portal, PROM-Slide, RouterWORKS, StillFile, Still Net, Tekniche,
Unilock, VIA, ViewGuard, Xplus, and Leitch XPRESS are trademarks or
registered trademarks of Leitch Technology Corporation in the United
States, Canada, and/or other countries.
All other trademarks are the property of their respective owners.
Copyright 2002, Leitch Technology Corporation. All rights reserved.
Printed in Canada.
6800/7000 Series
Audio and Video
Multi-Demultiplexing
Products
Installation and Operation Manual
Edition B
November 2002
Purpose
Audience
Writing Conventions
Preface
This manual details the features, installation procedures, operational
procedures, and specifications of the 6800/7000 Series of Audio and
Video Multi/Demultiplexing Products.
This manual is written for technicians and operators responsible for
installation, setup, and/or operation of the 6800/7000 Series of Audio
and Video Multi/Demultiplexing Products.
To enhance your understanding, the authors of this manual have
adhered to the following text conventions:
Bold Indicates dialog box, property sheet, field, button, checkbox,
listbox, combo box, menu, submenu, window, list, and
selection names.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual iii
Italics Indicates email addresses, names of books and publications,
and first instances of new terms and specialized words that
need emphasis.
CAPS Indicates a specific key on the keyboard, such as ENTER,
TAB, CTRL, ALT, DELETE.
Code
> Indicates direction of navigation through a hierarchy of
hyperlink
Indicates variables or command-line entries, i.e., a DOS entry,
something you type into a field, etc.
menus and windows.
Indicates a jump to another location in the document or
elsewhere (such as a website).
Preface
Revision History
Edition Date Revision History
A May 1998 Initial release.
B November 2002
• Updated information.
• General reformatting and
reorganization of material.
iv 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Summary of the 6800/7000 Series
Product Manuals
Audio/Video/Mux and Demultiplexing Manual
Chapter 1 ADC-6801 CAV to SDI Converter Module
Chapter 2 ADC-6880 Analog to AES/EBU Digital Converter
Chapter 3 ADM/ASM-680x Embedded Audio Monitoring Module
Chapter 4 DAC-6801 Digital to Analog Component Converter
Chapter 5 DAC-6880 AES/EBU Digital Audio to Analog Audio
Converter
Chapter 6 DEC-6801/DES-6801 Decoder/Decoder with Frame
Synchronizer Module
Preface
Chapter 7 DEC-6804 Decoder and DES-6804 Decoder with Frame
Synchronizer
Chapter 8 ENC-ENS/ENX-6801A Encoder Modules
Chapter 9 MXA-6800-AES and MXA-6801-A2/A4 Audio Multiplexer
Module
Chapter10 VFS-6801 Serial Component Frame Synchronizer Module
Chapter 11 VTS-6801 Video Timing Switcher
Appendix A Embedding Modes Graphic Description
Test Series Manual
Chapter 1 VTG-6801-1 &VTG-6801-1A 4:2:0 & 4:2:2 Serial Digital
Test Generator Module
Chapter 2 VTG-6801-2 Serial Digital Test Generator Module
Chapter 3 DAR-6880 AES/EBU Digital Audio Reference and Tone
Generator
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual v
Chapter 4 SAI-6800 4:2:2 Safe Area Generator/Inserter Module
Chapter 5 VTG-6800 MIXBOX Frame and Control Assembly
Chapter 6 EDH-6800MB Detection and Handling MIXBOX
Preface
Distribution and Routing Manual
Chapter 1 AES-6880 AES/EBU Digital Audio Distribution Amplifier
Module - General
Chapter 2 DNH-6800 DigiNet Hub Module
Chapter 3 EDH-6800-2EDH Detection/Insertion Serial Distribution
Amplifier Module
Chapter 4 USM-6800 PAL/NTSC Monitoring Encoder Module
Chapter 5 VDA-6830 Video Distribution Amplifier Module
Chapter 6 VEA-6830 Video Equalizing Amplifier Module
Chapter 7 VEA-6840 Video Equalizing Amplifier Module
Chapter 8 VPD-6830 Programmable Video DA series
Chapter 9 VSD-6801 Serial Digital Distribution Amplifier Module
Chapter 10 VSE-6801 Serial Equalizing Amplifier Module
Chapter 11 VSE-6802 Serial Equalizing Distribution Amplifier
Chapter 12 VSM-6802 Digital Composite Video Signal
Chapter 13 VSM-6804 Digital Composite Video Signal Monitor
Module
Chapter 14 VSR-4041 Serial Video Router Module
LogoMotion Manual
Chapter 1 Logo Utilities for 6800 Series Modules
Chapter 2 LGI-6801 Serial Digital Logo Generator/Inserter Module
Chapter 3 VES-6801 Flash EPROM Side Module
Chapter 4 DSK-6801/3 Downstream Serial Keyer
Chapter 5 DSK-CP1/2 Downstream Serial Keyer Control Panel
vi 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Frames and Power Supply Manual
Chapter 1 Mounting Frames
Chapter 2 FR-6801/FR-6801-1 Frames
Chapter 3 FR-6804/FR-6804-1 Frames
Chapter 4 CF-6801 Cooling Frame
Chapter 5 FR-7001 and FR-7000MB MIXBOX
Chapter 6 6801PS Power Supply Module
Chapter 7 6804(-1) Power Supply Module
Chapter 8 7000 Power Supply Module
Chapter 9 6801PS-48 Power Supply Module
Chapter 10 6804PS-1-48 Power Supply Module
Preface
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual vii
Preface
Unpacking/Shipping Information
This product has been carefully inspected, tested and calibrated before
shipment to ensure years of stable and troublefree service. Please check
the equipment for any visible damage which may have occurred during
transit.
Please confirm that all items listed on the packing list have been
received. If any item on the packing list is missing, please contact your
Leitch dealer. If any item is damaged, please contact the carrier. Ensure
that all packaging material is removed from the product and its
associated components before installing the unit.
It is suggested that you keep at least one set of original Leitch packaging,
in the event that a product needs to be returned for service. If the
original packaging is not available, you can purchase replacement
packaging from Leitch at a modest cost or supply your own packaging as
long as it meets the following criteria:
• Packaging must be able to withstand the product weight.
• Product must be held rigid within the packaging.
• There must be at least 2 inches of space between the product and
the container.
• The corners of the product must be protected.
Products that are being returned to Leitch for servicing should be
shipped prepaid in the original packaging material if possible. If the
product is still within the warranty period, the product will be returned
by prepaid shipment after servicing.
Installation Information
If this product is rack-mountable, it should be mounted in an
appropriate rack using the rack-mounting positions and rear support
guides provided. It is recommended that each frame be connected to a
separate electrical circuit for protection against circuit overloading. If
this product relies on forced air cooling, it is recommended that all
obstructions to the air flow be removed prior to mounting the frame in
the rack.
If this product has a provision for external earth grounding, it is
recommended that the frame be grounded to earth via the protective
earth ground on the rear panel.
viii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Important Safety Instructions
Review the following safety precautions to avoid injury and prevent
damage to this product or any products connected to it. Read these
instructions. Keep these instructions. Heed all warnings. Follow all
instructions.
Servicing
Only qualified personnel should perform service procedures. Refer all
servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or
plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
Safety Terms and Symbols
Preface
Terms and Symbols in This Manual
WARNING:
Statements identifying conditions or practices that can result in
personal injury or loss of life: High voltage is present. Uninsulated
dangerous voltage within the product’s enclosure may be sufficient
to constitute a risk of electric shock to persons.
CAUTION:
Statements identifying conditions or practices that can result in
damage to the equipment or other property: Important operating
and maintenance (servicing) instructions in the literature
accompanying the product.
Terms and Symbols on the Product
DANGER:
High voltage and indicates a personal injury hazard immediately
accessible as one reads the marking.
WARNING:
Indicates a personal injury hazard not immediately accessible as
one reads the marking.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual ix
CAUTION:
Indicates a hazard to property including the product or to take
attention and refer to the manual.
Preface
Injury Precautions
Protective ground (earth) terminal.
Fuse:
Replace with same type and rating of fuse.
Observe precautions for handling electrostatic-sensitive devices.
WARNING!
To reduce the risk of electric shock, do not expose this apparatus to
rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING!
Potentially lethal voltages are present within this product’s frame
during normal operation. The AC power cord must be
disconnected from the frame before the top panel is removed. (In
frames with multiple power supplies, remove ALL power cords.)
Power should not be applied to the frame while the top is open,
unless properly trained personnel are servicing the unit.
[PL Poland] Przod zdjeciem pokrywy wyciagnac wtyczke z gniazda
sieciowego.
[French] AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS
OUVRIR. INSTALLER SUR SUPPORT DE MONTAGE
SEULEMENT.
x 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Preface
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xi
AVIS - Risque de choc electrique. Ne pas
ouvrir.
Preface
Use Proper Power Cord
To avoid fire hazard, use only the power cord specified for this
product.
Ground the Product
Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other.
A grounding type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety.
When the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
[United Kingdom] WARNING: THIS APPLIANCE MUST BE
EARTHED.
[Sweden] APPARATEN SKALL ANSLUTAS TILL JORDAT
UTTAG NÄR DEN ANSLUTS TILL ETT NÄTVERK.
Do Not Operate Without Covers
To avoid electrical shock or fire hazard, do not operate this product
with covers or panels removed.
Use Proper Fuse
To avoid fire hazard, use only the fuse type and rating specified for
this product.
Do Not Operate in Wet/Damp Conditions
To reduce the risk of fire or electric shock, do not expose this
apparatus to rain or moisture.
Do Not Operate in an Explosive Atmosphere
To avoid injury or fire hazard, do not operate this product in an
explosive atmosphere.
Avoid Exposed Circuitry
To avoid injury, remove jewelry such as rings, watches, and other
metallic objects. Do not touch exposed connections and
components when power is present.
xii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Product Damage Precautions
Preface
Use Proper Power Source
Do not operate this product from a power source that supplies
more than the specified voltage.
Use Proper Voltage Setting
Before applying power, ensure that the line selector is in the proper
position for the power source being used.
Provide Proper Ventilation
To prevent product overheating, provide proper ventilation.
Do Not Block Any Ventilation Openings
Do not block any of the ventilation openings. Install in accordance
with the manufacturer’s instructions.
Only Use Attachments/Accessories Specified by the Manufacturer
Do Not Operate With Suspected Failures
Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way, such as
power-supply cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been
dropped.
For Products with Multiple Power Cords:
CAUTION: This unit can have more than one power supply cord.
To de-energize the internal circuitry, disconnect all power cords
before servicing.
[Norwegian] ADVARSEL: Utstyret kan ha mere ennn en
tilførselsledning. For å gjore interne deler spennigsløse må alle
tilførselsledningene trekkes ut.
[Sweden] VARNING: Denna apparat har mer än en nätanslutning.
Samtliga nätkablar måste bortkopplas för att göra de interna
kretsarna spänningsfria.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xiii
Preface
Do Not Use This Apparatus Near Water
Do not expose this apparatus to dripping or splashing water.
Ensure that no objects filled with liquid, such as vases or cups, are
placed on the apparatus.
Clean Only With A Dry Cloth
Keep Product Away from Heat Sources
Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
Install Near Socket Outlet
The equipment shall be installed near the socket outlet, and a
disconnect device shall be easily accessible.
Protect the Power Cord
Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point where
they exit from the apparatus.
Attention:
Observe precautions for handling electrostatic-sensitive devices.
See “Preventing Electrostatic Discharge” below for details.
Fuse Replacement:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ONLY WITH THE SAME TYPE OF FUSE.
[French]ATTENTION: REMPLACER UNIQUEMENT PAR UN
FUSIBLE DE MEME TYPE.
xiv 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Battery Use Warnings
Preface
CAUTION:
DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY
PLACED. REPLACE ONLY WITH THE SAME OR
EQUIVALENT TYPE RECOMMENDED BY THE
MANUFACTURER. DISCARD USED BATTERIES ACCORDING
TO THE MANUFACTURER’S INSTRUCTIONS.
[FI Finland] VAROITUS: Paristo voi rajahtaa, jos se on
virheellisesti asennettu. Vaihda paristo ainoastaan valmistajan
suosittelemaan tyyppun. Havita kaytetty paristo valmistajan
ohjeiden mukaisesti.
[SE Sweden] VARNING: Explosionsfara vid felaktigt batteribyte.
Anvand samma batterityp eller en eller en ekvivalent typ som
rekommenderas av tillverkaren. Kassera anvant batteri enligt
fabrikantens instruktion.
[D Denmark]
Advarsel! Lithiumbatteri. Eksplosionsfare ved
fejlagtig handtering. Udskiftning ma kun ske med
batteri af samme fabrikat oq type. Lever det
brugte batteri tilbage till leverandoren.
[KO Korean]
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xv
Preface
Preventing Electrostatic Discharge
CAUTION: Electrostatic discharge (ESD) can damage components
in the product. To prevent ESD, observe these precautions when
directed to do so:
• Use a Ground Strap. Wear a grounded antistatic wrist strap to
discharge the static voltage from your body while installing or
removing sensitive components.
• Use a Safe Work Area. Do not use any devices capable of
generating or holding a static charge in the work area where you
install or remove sensitive components. Avoid handling sensitive
components in areas that have a floor or benchtop surface capable
of generating a static charge.
• Handle Components Carefully. Do not slide sensitive
components over any surface. Do not touch exposed connector
pins. Handle sensitive components as little as possible.
• Transport and Store Carefully. Transport and store sensitive
components in a static-protected bag or container.
xvi 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Certifications and Compliances
This product has been tested and found to comply with the following
CE, FCC, UL, ICES and CSA standards:
EMC Standards
EN55014 Limits and methods of measurement of radio disturbance
characteristics of electric motor-operated and thermal
appliances for household and similar purposes, electric
tools and similar electric apparatus.
EN55022 Limits and methods of measurement of radio disturbance
characteristics of information technology equipment Class
A.
EN55103-1 Electromagnetic compatibility—Product family standard
for audio, video, audio-visual and entertainment lighting
control apparatus for professional use, Part 1: Emission,
Environment E4.
Preface
EN55103-2 Electromagnetic compatibility—Product family standard
for audio, video, audio-visual and entertainment lighting
control apparatus for professional use, Part 2: Emission,
Environment E4.
EN61000-4-2 Electrostatic discharge requirements “ESD” 2kV CD, 4kV
AD.
EN61000-4-3 Radiated radio-frequency electromagnetic field immunity
test 1V/m {1kHz 80% AM, 80-1000MHz}.
EN61000-4-4 Electrical Fast transient requirements “Burst”, 0.5kV Sig. &
Ctrl. Lines 0.5kV a.c. & d.c. Power line, 0.5kV functional
earth.
EN61000-4-5 Surge Immunity test 0.5kV a.c. Power line.
EN61000-4-6 Immunity to conducted disturbances induced by radio
frequency fields 1V rms 0.15-80MHz Sig. & Ctrl. Lines, 3V
rms 0.15-80MHz d.c. Power line, 1V rms 0.15-80MHz a.c.
Power line, 1V rms 0.15-80MHz functional earth.
EN61000-4-11 Voltage dips, short interruptions and voltage variations-
immunity tests.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xvii
Preface
Safety Standards
per the provision of the Electromagnetic Compatibility Directive 89/
336/EEC of 3 May 1989 as amended by 92/31EEC of 28 April 1992 and
93/68/EEC, Article 5 of 22 July 1993.
These devices are for professional use only and comply with Part 15 of
FCC rules. Operation is subject to the following two conditions:
1. These devices may cause interference to Radio and TV receivers in
residential areas.
2. These devices will accept any interference received, including
interference that may cause undesired operations.
These devices do not exceed the class A limits for radio noise emissions
from digital apparatus as set out in the interference standard entitled
“Digital apparatus”, ICES-003 of the Canadian Department of
Communications.
EN60065 Safety requirements for mains operated electronic and
related apparatus for household and similar general use
[IEC 60065: 1985, 5th Edition + A1: 1987 + A2: 1989 + A3:
1992, (modified)], per the provision of the Low-Voltage
Directive 73/23/EEC of February 19, 1973, as amended by
93/68/EEC.
Safety Standards (6801PS-48) Only
EN 60950-1992 Safety of information technology equipment, including
UL 1950 Safety of information technology equipment, including
CSA C22.2
No. 950-95
UL 1419 Safety requirement for professional Audio and Video
equipment.
CSA C22.2
No. 1
Safety requirements for audio, video and similar electronic
equipment.
electrical business equipment (Amendments A1: 1993, A2:
1993, A3: 1995, A4: 1997), per the provision of the LowVoltage Directive 73/23/EEC of February 19, 1973 as
amended by 93/68/EEC.
electrical business equipment.
Safety of information technology equipment, including
electrical business equipment.
xviii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Safety Standards: (6801PS-1-48) Only
EN 60950-2000 Safety of information technology equipment, including
UL 1950 Safety of information technology equipment, including
Preface
electrical business equipment (IEC-60950:1999), per the
provision of the Low-Voltage Directive 73/23/EEC of
February 19, 1973 as amended by 93/68/EEC.
electrical business equipment.
CSA C22.2
No. 950
Safety of information technology equipment, including
electrical business equipment.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xix
Preface
xx 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Contents
Chapter 1: ADC-6801 CAV to SDI
Converter Module............................................................1
Overview ..................................................................................................... 1
Features .......................................................................................................2
Specifications ..............................................................................................3
Input ....................................................................................................3
Component Analog Input ................................................................... 3
Filtering as per CCIR 601 Specifications ............................................ 4
Frequency Response ...........................................................................4
Signal to Noise Ratio ..........................................................................4
Output ................................................................................................. 4
Installation ..................................................................................................5
Module Edge Layout ................................................................................... 6
Setup and Control .......................................................................................8
Front Edge Controls ............................................................................ 8
Jumpers ..............................................................................................10
Standard Select Function ..................................................................11
Analog Adjustments ................................................................................. 14
Sync Phase ......................................................................................... 14
Cb Gain and Cr Gain ......................................................................... 14
Cb Phase and Cr Phase ...................................................................... 14
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxi
Chapter 2: ADC-6880 Analog to AES/EBU
Digital Audio Converter................................................15
Overview ................................................................................................... 15
Operation .................................................................................................. 17
Analog Audio Input .......................................................................... 17
External Sampling Reference ............................................................ 18
Contents
Configuration ........................................................................................... 19
Attenuation Jumpers ......................................................................... 19
AC- or DC-Coupling ........................................................................ 21
Gain ...................................................................................................22
Sampling Reference Selection Switch ............................................... 23
Sampling Frequency Selection Switch .............................................. 23
Reset Button ...................................................................................... 24
LED Indicators .......................................................................................... 25
Power LED ........................................................................................ 25
Sampling Frequency ..........................................................................26
External Reference Present ............................................................... 26
External Reference Error .................................................................. 26
Specifications ............................................................................................ 27
Analog Audio Input .......................................................................... 27
Reference Input ................................................................................. 27
Digital Output ................................................................................... 27
Performance Specifications .............................................................. 28
Power Specifications ......................................................................... 28
ADC-6880 ................................................................................................. 29
Implementation Chart ...................................................................... 29
Chapter 3: ADM/ASM-680x Embedded Audio
Monitoring Serial Distribution Amplifier Modules .. 31
Overview ................................................................................................... 31
Frames and Modules ................................................................................32
Serial Video Input .............................................................................34
Serial Video Outputs (ASM-6800 only) ........................................... 34
Analog Audio Outputs ...................................................................... 35
Balanced Audio Outputs ................................................................... 36
Module Edge Controls and Indicators ............................................. 37
Channel Swap Control ...................................................................... 38
Monitor Swap .................................................................................... 39
Analog Output Levels ....................................................................... 39
Audio Group Selection ..................................................................... 40
Module Edge Indicator Descriptions ............................................... 40
Modules and Adaptors ............................................................................. 41
ASM-6800 Module ............................................................................ 41
ADM/ASM Module ..........................................................................42
xxii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Contents
Audio Adapters .................................................................................43
Jumper Configurations ............................................................................. 44
Chapter 4: DAC-6801 Digital to Analog
Component Converter ..................................................47
Overview ................................................................................................... 47
Features ..................................................................................................... 48
Installation ................................................................................................ 49
Front Edge Layout ............................................................................. 49
LEDs ..................................................................................................50
Front Edge Control ................................................................................... 52
Switches ............................................................................................. 54
Color Bar Levels ................................................................................55
Analog Adjustments ................................................................................. 57
Specifications ............................................................................................ 58
Serial Video Input .............................................................................58
Component Outputs .........................................................................58
Sync Outputs ..................................................................................... 59
Power Consumption ......................................................................... 59
Chapter 5: DAC-6880 AES/EBU Digital
Audio to Analog Audio Converter...............................61
Overview ................................................................................................... 61
Operation .................................................................................................. 63
Input Impedance ...............................................................................63
Terminated or Looping Inputs ......................................................... 63
Full-Scale Analog Output Level ........................................................ 63
Output Level Adjustment ................................................................. 64
Power and Error Indicators .............................................................. 64
Rear Module/Adapter Connections .................................................65
Specifications ............................................................................................ 66
Input .................................................................................................. 66
Output ............................................................................................... 66
DAC-6880 ................................................................................................. 67
Implementation Chart ...................................................................... 67
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxiii
Contents
Chapter 6: DEC-6801/DES-6801
Decoder with Frame Synchronizer Module ............... 69
Overview ................................................................................................... 69
Specifications ............................................................................................ 70
Analog Video Input ..........................................................................70
Analog Video Processing .................................................................. 70
Digital Video Processing ................................................................... 70
Serial Video Outputs ......................................................................... 71
Phasing .............................................................................................. 71
Storage ............................................................................................... 71
Reference Input ................................................................................. 71
Power Dissipation ............................................................................. 72
Installation ................................................................................................ 73
Operations ................................................................................................ 74
Controls .............................................................................................74
LED Indicators .................................................................................. 74
Jumpers ............................................................................................. 75
Switches .............................................................................................75
Frame ID ............................................................................................ 75
Bank A1 ..................................................................................................... 76
Bank B2 ..................................................................................................... 78
Chapter 7: DEC-6804 Decoder and
DES-6804 Decoder with Frame Synchronizer ........... 79
Overview ................................................................................................... 79
Features ..................................................................................................... 80
Signal Flow ................................................................................................ 81
Front and Back Modules .......................................................................... 82
Front Module .................................................................................... 82
Back Module and Adhesive Overlay .................................................83
Installation ................................................................................................ 85
Jumper Settings ................................................................................. 85
Jumper Configurations .................................................................... 87
Operation .................................................................................................. 88
Overview ............................................................................................ 88
Controls .............................................................................................88
LED Indicators .................................................................................. 89
Changing Parameter Settings ............................................................91
xxiv 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Contents
Parameter Groups .....................................................................................92
Common Parameter Groups A and B (NTSC and PAL-B) ............. 93
Parameter Groups C and D (NTSC) ................................................. 97
Parameter Groups C and D (PAL-B) ................................................ 99
Audio Sync Interface (DES-6804 Only) ................................................. 101
Specifications .......................................................................................... 102
Analog Video Input ........................................................................102
Analog Video Processing ................................................................ 102
Digital Video Processing ................................................................. 102
Video Outputs ................................................................................. 103
Phasing (DES-6804) ........................................................................ 104
Storage (DES-6804) ......................................................................... 104
Audio Synchronization Interface Output (DES-6804) .................. 104
Reference Input (DES-6804) .......................................................... 104
Module Start-Up ............................................................................. 105
Typical Power Dissipation .............................................................. 105
Chapter 8: ENC/ENS/ENX-6801/M
Encoder Modules and Accessories ........................... 107
Overview ................................................................................................. 107
Features ................................................................................................... 108
Specifications .......................................................................................... 109
Serial Video Inputs .......................................................................... 109
Video Outputs ................................................................................. 109
Phasing Range .............................................................................. 111
Power Consumption ....................................................................... 111
Reference Inputs ............................................................................. 111
Installation .............................................................................................. 113
Block Diagram ........................................................................................ 114
Deserializer and FIFO Delay .......................................................... 114
Multi-Standard Encoder and Output Buffer ................................. 115
Genlock ........................................................................................... 115
User-Controlled Parameters .................................................................. 116
ENC/ENS-6801 Bank A .................................................................. 116
ENC/ENS-6801 Bank B ................................................................... 117
ENX-6801 Bank A ........................................................................... 118
ENX-6801 Bank B ........................................................................... 119
Delay Mode ..................................................................................... 120
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxv
Contents
Line Store ......................................................................................... 120
Input Signal ..................................................................................... 120
Output Signal .................................................................................. 120
Frame Buffer .................................................................................... 121
Line Buffer ....................................................................................... 121
Chapter 9: MXA-6800-AES and MXA-6801-A2/A4
Video/Audio Multiplexer Module .............................123
Overview ................................................................................................. 123
Features ................................................................................................... 124
Specifications .......................................................................................... 127
Serial Video Inputs ......................................................................... 127
Serial Video Outputs ....................................................................... 127
Audio ............................................................................................... 128
MXA-6800-AES .............................................................................. 128
MXA-6801-A2/A4 ........................................................................... 128
Terminology .................................................................................... 129
Installation .............................................................................................. 130
Jumper Settings ....................................................................................... 135
MXA-6800-AES .............................................................................. 136
MXA-6800-A2/A4 ........................................................................... 137
Operation ........................................................................................ 137
Common Mode Adjust Potentiometers (pots) .............................. 138
LED Indicators (MXA-6800-AES) ................................................. 138
LED Indicators (MXA-6801-A2/A4) ............................................. 140
Toggle Switch and LED Display Operation .................................... 141
Control Parameters Summary ............................................................... 142
Operator Mode 1 (OS1) .................................................................. 143
Operator Mode 2 (OS2) .................................................................. 145
Operator Mode 3 (OS3) .................................................................. 146
Control Parameter Details ...................................................................... 147
Operator Mode 1 ............................................................................ 147
Operator Mode 2 ............................................................................. 149
Operator Mode 3 ............................................................................. 152
Audio Error Messages ..................................................................... 153
Lock Mode ....................................................................................... 154
Audio Error Messages ..................................................................... 154
Gain Value ....................................................................................... 154
xxvi 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Contents
Switch Position 2 and Function ..................................................... 155
Mute Duration ................................................................................. 155
Stereo Mode .................................................................................... 155
Audio Error Numbers .....................................................................155
Swapping Channels via Remote Control ............................................... 156
Audio Embedding ........................................................................... 156
Converting Hex to Decimal Numbers ................................................... 158
MXA-6800-AES ...................................................................................... 159
MXA-6801-A2/A4 ..................................................................................161
Chapter 10: VFS-6801 Serial Component Frame
Synchronizer Module ................................................. 163
Overview ................................................................................................. 163
Specifications .......................................................................................... 164
Serial Video Inputs .......................................................................... 164
Serial Video Outputs ....................................................................... 164
Phasing ............................................................................................ 165
Storage .............................................................................................165
Reference Input ............................................................................... 165
Installation .............................................................................................. 166
Operations ..............................................................................................167
Controls ........................................................................................... 167
LED Indicators ................................................................................ 167
Jumpers ............................................................................................ 167
Switches ........................................................................................... 168
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual xxvii
Chapter 11: VTS-6801 Video Timing Switcher........ 171
Overview ................................................................................................. 171
Features ................................................................................................... 172
Specifications .......................................................................................... 173
Serial Video Inputs .......................................................................... 173
Serial Video Outputs ....................................................................... 173
Analog Reference ............................................................................ 174
Load Supply ..................................................................................... 174
Control ............................................................................................174
Operation ........................................................................................ 174
LED Indicators ................................................................................ 175
Toggle Switch and Hex Switch Operation ............................................. 178
Contents
Control Functions ........................................................................... 178
Control Function Details ........................................................................ 180
Replace Serial Time Delay (SW1 – position E) LED and Time
Indication ........................................................................................ 183
Input Switching with GPI Controls ........................................................ 185
Polarity Active High ........................................................................ 185
Polarity Active Low ......................................................................... 185
General Issues ......................................................................................... 186
Applications ............................................................................................ 187
Clean-Switch Settings ...................................................................... 187
2- by -1 Clean-Switch Settings ........................................................ 187
Digital Adjusted Line Delay ............................................................ 188
Backup Video Switch ...................................................................... 189
Appendix A: Embedding Modes Graphic
Description...................................................................191
Overview ................................................................................................. 191
Left Mode Justify .................................................................................... 192
Follow Mode Part 1 ................................................................................ 193
Follow Mode Part 2 ................................................................................ 194
Overwrite Mode Part 1 ........................................................................... 195
Overwrite Mode Part 2 ........................................................................... 196
Strip ADS and Left Justify ....................................................................... 197
Strip ADS and Clean ............................................................................... 198
xxviii 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Overview
Chapter 1
ADC-6801 CAV to SDI
Converter Module
The ADC-6801 addresses the requirements of broadcasters and video
professionals for component analog-to digital 4:2:2 conversion. It
provides ten-bit (or optionally eight-bit) conversions from 525 and 625
line analog component signals to SMPTE 259-C serial digital video. The
ADC-6801 supports the following standards:
•SMPTE/EBU GBR and YPbPr
•NTSC-related GBR
• MII-related GBR and YPbPr
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 1
• BETACAM YPbPr in 625 and 525 line standards, with and without
setup as appropriate.
Specifications and designs are subject to change without notice.
Chapter 1: ADC-6801 CAV to SDI Converter Module Features
Features
The ADC-6801 has the following features:
• 10-bit default, with option setting for 8-bit conversion
• Component analog input with color space conversion,
GBR or YPbPr
• Looping inputs
• Two serial digital SMPTE 259-C (270 Mb/s) outputs
• Selectable sync from Y/G, external color black or TTL level
• Digital filtering as per CCIR 601 specifications (-12 dB at Nyquist)
•2x oversampling
• Variable vertical blanking up to line 19 for 525 and line 22 for 625
•EDH insertion
• Horizontal blanking markers for analog blanking indication
• Low power 7.5 W
2 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Specifications Chapter 1: ADC-6801 CAV to SDI Converter Module
Specifications
Input
Item Specifications
Sampling Rate 27 MHz Y 13.5 MHz Cr/Cb
Quantization 10 bits
Input Standards SMPTE /EBU, MII, Betacam component
or RGB at 525 or 625 line rates
(External sync and G/Y, B/B-Y, R/R-Y
loop through)
5 BNCs
Component Analog Input
Item Specifications
Connector BNC per IEC 169-8
Impedance Loop-through high impedance or 75
Signal Level 1 Vp-p nominal with sync, 0.7 Vp-p
Adjustable Gain ± 10%
Time Adjustment Range ± 1.8 µs
Return Loss > 40 dB to 5.5 MHz
•Ext. Sync
•Loop through G/Y
• B/B-Y
•R/R-Y
Ω
nominal
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 3
Chapter 1: ADC-6801 CAV to SDI Converter Module Specifications
Filtering as per CCIR 601 Specifications
Frequency Response
Item Specifications
Y Channel ± 0.1 dB to 5.5 MHz
Cr, Cb Channels ± 0.2 dB to 2.75 MHz
Signal to Noise Ratio
Item Specifications
On all Channels > 64 dB RMS. relative to 0.714 V, 10 kHz to
5.5 MHz
Interchannel Crosstalk <-50 dB
2T K Factor <0.5%
Output
Luminance Non-linearity <1%
Gain Alignment <1%, typically better than 0.5%
DC Clamping Typically within 1 quantization level on
field average
Item Specifications
Output Standard 4:2:2, two BNCs as per SMPTE 259
Input to Output Delay 3.6 µs
4 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Installation Chapter 1: ADC-6801 CAV to SDI Converter Module
A
Installation
This module must be installed into an FR-6804 or FR-6804-1 mounting
frame to meet CE requirements. The back module layout is shown below
and is connected as follows:
Signal Descriptions
Sync In External color black or TTL level sync (optional)
G/Y Green or Y signal (looped)
B/B-Y Blue or B-Y signal (looped)
R/R-Y Red or R-Y signal (looped)
Serial Out SMPTE 259-C serial outputs
SERIA L
OUT
R/R-Y
LOOP
B/B-Y
LOOP
G/Y
LOOP
DC-680 1-M
SYNC
IN
ADC-6801
SYNC
G/Y LOOP
B/B-Y LOOP
IN
This back module is used when the
ADC-6801 module is installed into
R/R -Y LOOP
either a FR-7001 series or FR-7000MB
MIX BOX frame.
SERI AL
OUT
This overlay is used when
the ADC-6801 module is
installed into a 6800 series
frame.
Figure 1-1.
ADC-6801 Back Module and Overlay
The inputs on the back module are looping. If the loop is not required,
external terminations must be connected to the spare BNCs.
The external sync input can be terminated on-board by installing
jumper J8 or can be externally looped. See Figure 1-2, on page 7 and see
also “Setup and Control”, on page 8 for further information.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 5
Chapter 1: ADC-6801 CAV to SDI Converter Module Module Edge Layout
Module Edge Layout
The table below describes the SW1 Hex switch positions and functions:
Position Function
0Operate
1 Standard Select
2 YCrCb Gain
3Cb Gain
4Cr Gain
5 Y Offset
6Cb Offset
7 Cr Offset
8H Phase
9Luma Phase
A Split Screen
BMarkers
CColor Bars
D Vertical Blanking
EFactory Recall
F Reserved
6 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Module Edge Layout Chapter 1: ADC-6801 CAV to SDI Converter Module
A
525
AUTO
625
LOCK
SMPTE
BETA
M-II
NTSC
GBR
Y-Pr-Pb
SETUP
SYNC G/Y
SYNC TTL
SYNC BLK
8BIT MODE
ACTIVITY
DC-6801
HEX
SW1
TOG
SW2
LEDs
Phase
Config
J5, J6 and J7 must be in OP
position for correct board
operation.
Sync
Error
U4
System Firmware
CR
Phase
CB
Phase
CB
Gain
CR
Gain
Figure 1-2. Front Edge Layout and Controls
J8: HI-Z / 75
J5: OP/CAL
J6: OP/CAL
J7: OP/CAL
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 7
Chapter 1: ADC-6801 CAV to SDI Converter Module Setup and Control
Setup and Control
Front Edge Controls
The operation of the ADC-6801 is via the front edge controls, the SW2
TOG (toggle) switch and the SW1 Hex switch. The Hex switch selects the
parameter to be adjusted/selected while the Toggle switch performs the
adjustment/selection.
SW1
Position
0 Normal Normal Operation UP
1 Standard
2YCrCb
Function Purpose
Standard selection is
Select
Gain
achieved by setting the
HEX switch in position
1. Toggling SW2 up
moves the selection
through all of the
modes. Toggling SW2
changes the
down
selection inside of the
mode. The Active mode
selection is indicated by
the current selection
LED flashing.
Changes the overall gain
on all three channels at
the same time to
compensate for variable
input gains.
SW2
Position
DN
UP
DN
UP
DN
SW2
Actions
No Action
Change
Mode
Change
Selection
Increase
Gain
Decrease
Gain
3 Cb Gain Changes the gain on the
4 Cr Gain Changes the gain on the
8 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Cb channel
independently from the
other channels.
Cr channel
independently from the
other channels.
UP
DN
UP
DN
Increase
Gain
Decrease
Gain
Increase
Gain
Decrease
Gain
Setup and Control Chapter 1: ADC-6801 CAV to SDI Converter Module
SW1
Position
5 Y Offset Changes the DC offset
6 Cb Offset Changes the DC offset
7 Cr Offset Changes the DC offset
8 Horizontal
Function Purpose
on the Y channel
independently from the
other channels.
on the Cb channel
independently from the
other channels.
on the Cr channel
independently from the
other channels.
Changes the timing
Phase
adjustments between the
input video and the sync
reference. The
adjustment is made in 27
MHz (37 ns) increments
or decrements.
SW2
Position
UP
DN
UP
DN
UP
DN
UP
DN
SW2
Actions
Increase
Gain
Decrease
Gain
Increase
Gain
Decrease
Gain
Increase
Gain
Decrease
Gain
Increase
Gain
Decrease
Gain
9Luma
Phase
A Split Screen Enables a vertical split
B Horizontal
Markers
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 9
Adjusts the 13.5 MHz
cycle time delay between
Y and the Cb/Cr
channels.
between the input signal
and the internally
generated color bars.
Enables the internally
generated horizontal
markers. The markers
indicate the start and
end of analog blanking
on the digital wider line.
UP
DN
UP
DN
UP
DN
Increase
Gain
Decrease
Gain
Enabled
Disabled
Enabled
Disabled
Chapter 1: ADC-6801 CAV to SDI Converter Module Setup and Control
SW1
Position
C Internal
DVertical
EFactory
Function Purpose
Enables the internally
Color Bars
Blanking
Recall
generated color bars
signal.
The bars are 100% luma
and 75% chroma,100/0/
75/0.
Varies the blanking
width up to line 19 in
525 and line 22 in 625
standard.
Recalls the factory auto
calibrated levels for the
given input. This recall
resets all of the user
offsets to zero and
restores the factory
Luma and Horizontal
phases. See “Factory
Recall Standards” on
page 11for further
information, it shows
the various levels as
specified for each
standard. Each refers to
100% color bar levels,
100/0/100/0 or 100/7.5/
100/0 with setup.
SW2
Position
UP
DN
UP
DN
UP
DN
SW2
Actions
Enabled
Disabled
Increase
Gain
Decrease
Gain
Recall
Recall
F Reserved
Jumpers
Use jumper J8 to terminates the external sync input with 75Ω, or leave it
at a high impedance (HI-Z) state for use during external loop through of
the sync input.
Internal color bars are not rate
limited, so should not be used
“on-air”, as they are intended as
an alignment aid only.
10 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Jumpers J5 and J7 are for factory use only during board calibration and
should be in the OP position for correct board operation.
Setup and Control Chapter 1: ADC-6801 CAV to SDI Converter Module
Standard Select Function
Standard selection is achieved by setting the
SW1 Hex
switch to position 1.
Toggling SW2 up moves the selection through all of the modes. Toggling
SW2 down changes the selection inside the mode. The Active mode
selection is indicated by the current selection LED flashing.
The table below describes the modes, selections, and purpose of the
Standard select function:
Mode Selections Purpose
Standard 525
Auto
625
Format SMPTE
BETA
MII
NTSC
Matrix GBR
YPbPr
Selects 525 line or 625 line input. The
Auto position will automatically
determine the input line standard and set
the system accordingly.
Selects the input format: SMPTE, BETA,
MII, or NTSC.
Matrix selects the input matrix: GBR or
YPbPr.
Selects the input matrix, GBR, or YPbPr.
Setup On/off Setup consists of On/Off control based on
input standard. When On, the setup is
removed from the analog signal prior to
sampling.
Sync Source C/Y
BLK
TTL
Data Width 10 BIT
8 BIT
Sync source selects are as follows:
• Internal from Y/G channel
•External color black
•External TTL level
Data-width is selectable between 10-bit
and 8-bit. In 8-bit mode. the sampled 10bit data is rounded to 8 bits.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 11
Chapter 1: ADC-6801 CAV to SDI Converter Module Setup and Control
Illegal standards can be
selected, indicated by flashing
Activ ity LED. In this situation,
the system software will choose
the closest standard and operate
from that standard. User offsets
to illegal standards are
permitted, but they are not
stored. See “Standard Select
Function” on page 11 for a list of
calibrated standard settings.
525, YPbPr,
with No Setup
YB-YR-Y
SMPTE 700 mV 700 mV 700 mV
**BETA 714 mV 1008 mV 1008 mV
MII 700 mV 648 mV 648 mV
NTSC Invalid
525, YPbPr,
with Setup
YB-YR-Y
SMPTE Invalid
*BETA 714 mVp-p
934 mV 934 mV
660 mV, 54 mVsetup
MII 700 mVp-p
648 mV 648 mV
648 mV, 52 mVsetup
NTSC Invalid
*Old, non-SMPTE/EBU
BETACAM levels.
** Used in Japan.
525, GBR,
with No Setup
GBR
SMPTE 700 mV 700 mV 700 mV
*BETA Invalid
MII 700 mV 700 mV 700 mV
NTSC 714 mV 714 mV 714 mV
525, GBR,
with Setup
GBR
SMPTE Invalid
*BETA Invalid
MII-related 700 mVp-p
648 mV, 52 mVsetup
700 mVp-p
648 mV, 52
mV setup
700 mVp-p
648 mV, 52
mVsetup
12 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Setup and Control Chapter 1: ADC-6801 CAV to SDI Converter Module
525, GBR,
with Setup
NTSC-related 714 mVp-p
GBR
660 mV, 54 mVsetup
714mVp-p
660mV,
54mV setup
714mVp-p
660mV,
54mVsetup
625, YPbPr Y B-Y R-Y
EBU 700 mV 700 mV 700 mV
*BETA non-EBU 700 mV 934 mV 934 mV
MII-related Invalid
NTSC-related Invalid
625, GBR G B R
EBU 700 mV 700 mV 700 mV
BETA Invalid
MII Invalid
NTSC Invalid
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 13
Chapter 1: ADC-6801 CAV to SDI Converter Module Analog Adjustments
Analog Adjustments
Sync Phase
Selects fine phasing to the system sync signal within one 27 MHz cycle
or 37 ns.
Cb Gain and Cr Gain
Used to null the gain errors between the GBR to YPbPr analog matrix.
They are set in the factory and there should be no need to adjust them.
Cb Phase and Cr Phase
Selects fine phasing of the CB and CR channels to the Y channel within
± 5 ns. These are set in the factory, and there is no need to readjust them.
14 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Overview
Chapter 2
ADC-6880 Analog to AES/EBU
Digital Audio Converter
The ADC-6880 analog to digital audio converter converts two channels
of balanced analog audio into a single AES3-1992 digital audio signal at
20-bit resolution. It can be used in any of the Leitch 6800 or 7000 series
frames, and can be used as a standalone A-to-D converter, or in
conjunction with several A-to-D converters linked by a common
external sampling reference signal. The ADC-6880 is available with 75
unbalanced digital outputs when used in the 6800 series frame, or 75
unbalanced and 110
series frame.
Ω balanced digital outputs when used in a 7000
Ω
Ω
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 15
The ADC-6880 utilizes a 20-bit, 64X oversampling Sigma-Delta A-to-D
converter that can sample the audio signal at 48 kHz or 44.1 kHz, based
on an external reference signal, or on an internal reference signal
generated on board. The audio signal may also be sampled at variable
rates from 32 kHz to 50 kHz, based on an external reference signal.
The input to the ADC-6880 can be AC- or DC-coupled, and the input
attenuation can be set in calibrated 2 dB increments from +16 dBu to
+30 dBu maximum analog audio input levels. A gain control allows
continuous adjustment of ± 2 dB.
Specifications and designs are subject to change without notice.
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Overview
+
-
Stereo
Analog
Audio
Inputs
External
AES
Sampling
Referen ce
Input
Level
Adjust
+
-
Input
Level
Adjust
Sampling
Clock
Generator
20-bit
A to D
AES
Formatting
485
Drivers
Two 110 Balanced
AES Outputs
(Only avai labl e when
installed in
7000 Series frames)
Four 75 Coaxial
AES Outputs
Ω
Ω
Figure 2-1. ADC-6880 Block Diagram
16 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Operation Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
Operation
Analog Audio Input
The ADC-6880 has two balanced audio input channels that are typically
used for stereo audio inputs (left and right). The audio input stage
processes the analog audio signal prior to its conversion to a digital
signal. In order to accommodate various nominal analog audio levels,
each input channel has a selectable attenuator that allows the full-scale
digital output level (0 dBFS) to correspond to the user’s maximum audio
signal level. The attenuator can be set in 2 dB increments from +16 dBu
to +30 dBu. The factory default setting is +28 dBu.
Gain can be adjusted on each channel over a ± 2 dB range. The gain
adjustments are set at the factory from a high-precision audio test
reference signal such that the full-scale digital output level (0 dBFS)
corresponds precisely with the calibrated selectable attenuator positions
of +16 dBu to +30 dBu (described above). The gain can be adjusted by
the user to match specific level requirements for full-scale digital audio
signal levels.
In addition to performing audio-level attenuation, the analog input stage
allows the analog audio inputs to be AC- or DC-coupled. The factory
default is AC-coupled, and this is the recommended mode of operation.
If the ADC-6880 is set to DC-coupled, any DC signal present on the
analog audio input signals will be a source of error in the A-to-D
conversion. The analog input stage rejects common mode signals that
may be present on the audio input signals and provides over-voltage
protection for the A-to-D converter.
See “Configuration”, on page 19 for detailed information on attenuation/
gain setting and AC/DC-coupled selection.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 17
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Operation
External Sampling Reference
The ADC-6880 external sampling reference input is a 75Ω looping BNC
input that allows multiple units to be synchronized to a common AES11
See “Attenuation Jumpers”, on
page 19 for detailed information
on selecting the sampling
reference.
sampling reference signal, such as that generated from the Leitch
DAR-6880 reference generator. A standard AES3 digital audio signal
may also be used. The ADC-6880 cannot accept word clock, or a video
signal, as a reference input. The ADC-6880 can be locked to a video
signal through the use of Leitch’s DAR-6880 reference generator, which
can be locked to video.
18 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Configuration Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
Configuration
There are several settings on the ADC-6880 necessary for proper
operation. See “Attenuation Jumpers” below.
Attenuation Jumpers
The attenuation jumpers allow the digital output signal level to be set
over a 14 dB range, from +16 dBu analog input = 0 dBFS digital output,
to +30 dBu analog input = 0 dBFS digital output, in calibrated 2 dB
increments. This range of input levels allows operators to set the
ADC-6880 such that the full-scale digital output (0 dBFS) will match
their maximum analog audio signal level.
Because the attenuation network is of sufficient precision, the gain
potentiometers do not have to be readjusted when changing input
attenuation jumper settings. This allows you to set the attenuation
jumper to the required setting without having to readjust the gain
potentiometers.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 19
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Configuration
A
.
To set the required level, apply jumpers
to the proper set of jumper prongs.
This example shows that 28 dBu is selected.
Jumpers
J1 & J12
J2 & J13
J3 & J14
J4 & J15
J5 & J16
J6 & J17
J7 & J18
J8 & J19
Level
16 dBu
18 dBu
20 dBu
22 dBu
24 dBu
26 dBu
28 dBu
30 dBu
DC-6880
20 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Figure 2-2.
Attenuation Jumper Settings
Configuration Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
AC- or DC-Coupling
These jumpers allow the analog audio input to be AC- or DC-coupled.
AC coupling is the default setting and prevents the ADC-6880 from
being disturbed by a DC voltage on the analog input signal.
ADC-6880
For AC coupled input,
set J9, J10, J20 and J21
to the AC position as shown.
Figure 2-3.
For DC coupled input,
For DC coupled input,
set J9, J10, J20 and J21
set J9, J10, J20 and J21
to the DC position as shown.
to the DC position as shown.
AC- or DC-Coupling Configuration
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 21
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Configuration
T
Gain
Gain adjustments R113 (left channel) and R15 (right channel) provide
approximately ± 2 dB of gain on each channel. This allows the output
digital signal level to be matched to a known analog input level from a
test generator.
IN
AUTO
EXT
Gain Adjust
Right Channel
48 kHz
44.1 kHz
PWR
48 kHz
44.1 kHz
EXT REF
REF ERR
Gain Adjust
Left Channel
Reset
Button
SW3
SW2
SW1
R15
R21
Green LED
Green LED
Green LED
Ye l l o w L E D
Red LED
R113
R125
R15 and R113 are
multi-turn
potentiometers
used to
adjust gain.
R21 and R125 are multi-turn
potentiometers used to adjust
common mode rejection.
These are factory set
and adjustment is
not normally required.
22 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Figure 2-4.
Card-Edge View
Configuration Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
Sampling Reference Selection Switch
SW3 is an edge-mounted, three-position toggle switch that controls the
source of the sampling reference signal. This switch allows the sampling
reference source to be switched between Internal, External or Auto
mode. The internal sampling rate can be switched between 44.1 kHz and
48 kHz (see Figure 2-4).
Placing SW3 in the Internal mode position forces the ADC-6880 to use
one of the internal crystal oscillators as a sampling reference. Depending
on the setting of the sampling frequency selection switch (SW2), the
ADC-6880 will sample at 48 kHz or 44.1 kHz, and will not be locked to
any external sources. This mode is referred to as internal sampling or free
run mode.
The auto setting allows the ADC-6880 to look for, and lock to, an
external reference signal present on the external reference input. If no
signal is present, or if the signal becomes unusable, the ADC-6880 will
automatically switch to internal Reference mode. When the external
reference signal is present and usable, the ADC-6880 will automatically
switch back to external Sampling mode and will be locked to the external
reference signal.
The external setting forces the ADC-6880 to lock to the external
reference only. If there is no external reference present, or if it becomes
unusable, the ADC-6880 will stop sampling audio data until the external
reference is restored.
The sampling reference selection switch can be changed during
operation of the ADC-6880. The unit does not have to be powered down
to change this switch setting.
Sampling Frequency Selection Switch
The sampling frequency selection switch determines which internal
sampling reference the ADC-6880 will use when it is in Internal mode.
When in the 48 kHz position, the sampling rate will be 48 kHz.
When in the 44.1 kHz position, the sampling rate will be 44.1 kHz. See
Figure 2-6.
When the ADC-6880 is locked to an external reference, this switch will
have no effect.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 23
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Configuration
Reset Button
The SW1 momentary push button located at the front edge of the
ADC-6880 initiates a reset and an internal calibration of the A-to-D
converter input circuitry (see “LED Indicators”, on page 25). The
internal calibration is also performed each time power is applied to the
ADC-6880. The SW1 button is a momentary push button that, when
pressed and released, initiates the Reset mode of the A-to-D converter
IC. It also mutes the digital data at the output of the ADC-6880. During
this reset time (approximately 1 second), the analog audio input signal is
disconnected, and the inputs are shorted to ground. This is
accomplished via relays RL1 and RL2. Inputs are not shorted to ground.
The reset procedure removes any DC offsets present on the ADC-6880
input circuit and any DC offset in the A-to-D converter IC’s internal
input stage.
INT
AUTO
EXT
48
KHz
44.1
KHz
PWR
48KHz
44.1KHz
EXT REF
REF ERR
SW3
SW2
SW1
R15
R15
R113
SW1
CAL
CAL
R125
SER.
SER.
NO.
J21
J21
J20
DC
DC
AC
AC
R21
J15 22dBu
J16 24dBu
J10
J9
DC
DC
AC
AC
J1 16dBu J12 16dBu
J2 18dBu J13 18dBu
J3 20dBu J14 20dBu
J5 24dBu
J4 22dBu
J6 26dBu J17 26dBu
J7 28dBu J18 28dBu
J8 30dBu J19 30dBu
Figure 2-5.
NO.
ADC-6880
1
Location of Reset (Calibration) Button
24 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
LED Indicators Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
T
LED Indicators
LED indicators show power on, sampling rate, lock to an external
sampling reference, and external sampling reference source errors.
IN
AUTO
EXT
Gain Adjust
Right Channel
48 kHz
44.1 kHz
PWR
48 kHz
44.1 kHz
EXT REF
REF ERR
Gain Adjust
Left Channel
Reset
Button
SW3
R15
R21
SW2
Green LED
Green LED
Green LED
Ye l l o w L E D
Red LED
R113
R125
SW1
Power LED
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 25
Figure 2-6.
Card-Edge View
The green power LED indicates that voltage is present across the +V and
-V inputs to the ADC-6880. It does not guarantee that the input power is
within the proper ± 6.5 to ± 8.0 V input voltage range. It also does not
indicate that each of the voltage regulators is working properly.
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter LED Indicators
Sampling Frequency
The green sampling Frequency LEDs indicate if the ADC-6880 is
sampling at 48 or 44.1 kHz. If the ADC-6880 is set to External Sampling
mode, and the external reference is not at 48 or 44.1 kHz, then the
ADC-6880 will indicate that it is locked to an external reference (via the
Ref. Pres. LED), but will not have either sampling frequency LED
illuminated.
This condition is valid, but the external reference signal must be between
32 and 50 kHz for the A-to-D converter IC to be able to lock to it.
External Reference Present
The yellow Ext Ref LED indicates that an external reference is present,
the ADC-6880 is locked to it and using it as the sampling reference. If the
ADC-6880 is set to internal sampling reference, then this LED will not
be illuminated, even if an external reference is present.
External Reference Error
The red external reference Error LED is illuminated when an error on the
external reference signal is detected.
26 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Specifications Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
Specifications
Analog Audio Input
Item Specifications
Input Number 2 channels of balanced analog audio
Input Coupling AC- or DC- coupled, selectable
Reference Input
Digital Output
Input Impedance > 30 k
Maximum Input
Level
Input Level Settings + 16 dBu to +30 dBu = 0 dBFS, in ± 2.0 dB
Ω
+30 dBu
increments, jumper selectable ± 2.0 dB variable
adjustment range
Item Specifications
Reference Signal Type AES11 or AES3 audio reference signal
Input Type BNC, loop-through
Input Impedance >10 k
Ω
Item Specifications
Number of Outputs
in 6800 Series Frame
4 Outputs @ 75Ω, BNC
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 27
Number of Outputs
in 7000 Series Frame
Output Voltage Level
for balanced Outputs
Output Voltage Level
for Coax Outputs
2 Outputs @ 110
3.5 to 5.0 Vp-p into 110Ω load
1.0 Vp-p ± 10% into 75Ω 1.0 Vp-p ± 10% into 75Ω
Ω, balanced plus 2
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter Specifications
Performance Specifications
Item Specifications
Frequency Response ± 0.05 dB, 20 Hz to 20 kHz
Linearity ± 1.0 dB to 100 dBFS
Signal to Noise Ratio > 107 dB, 20 Hz to 20 kHz, A weighted
> 102 dB, 20 Hz to 20 kHz, unweighted
THD + N < - 95 dB, 20 Hz to 20 kHz @ -2 dBFS
Power Specifications
Item Specifications
Consumption 3.5 W at ± 6.8 VDC
Input Voltage ± 6.4 to ± 7.5 VDC
Current 160 mA on - 6.8 VDC rail
350 mA on +6.8 VDC rail
28 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
ADC-6880 Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter
ADC-6880
Implementation Chart
The following table describes the functions of the ADC-6880:
Byte Bit Function RX TX Remarks
0 0 [0] Consumer use
[1] Professional use
1[0] Audio
[1] Nonaudio
2- 4 (Emphasis) [000] Not indicated
[100] No emphasis
µs
5[0] Fs locked
6- 7 [00] Not indicated
1 0- 3 (Channel
mode)
[110] 50/15
[111] CCITT J17
[1] Fs unlocked
[01] 48 KHz
[10] 44.1 KHz
[11] 32 KHz
[0000] Not indicated
[0001] 2-channel
[0010] Mono
[0011] Primary/secondary
[0100] Stereo
[0101] to [1111]
N
N
N
N
N
N
N
N
Y
Y
N
Y
Y
Y
N
N
N
N
N
N
N
Y
Y
N
N
Y
N
N
Y
Y
N
Y
Y
Y
N
N
N
N
Y
N
4- 7 (User-bit
mode)
20- 2 (Aux. bit
usage)
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 29
[0000] Not indicated
[0001] 192-bit
[0010] AES 18
[0011] User-defined
[0100] to [1111]
[000] Not indicated
[001] Audio data
[010] Coord.
[011] to [111]
N
Y
N
N
N
N
N
N
N
N
Y
N
N
N
Y
N
N
N
Chapter 2: ADC-6880 Analog to AES/EBU Digital Audio Converter ADC-6880
Byte Bit Function RX TX Remarks
3- 5 (Sample
length)
[000] Not indicated
[100] All other states
N
N
N
Y
N
N
3 0- 7 Multichannel modes N N
4 0- 1 AES11 sync reference N N
50- 7 Unused NN
6- 9 ASCII source ID N N
10- 13 ASCII destination ID N N
14- 17 Local sample address N N
18- 21 Time-of-day address N N
22 0- 7 C data reliability N N
23 0- 7 CRCC N Y
Validity (V) bit N Y
User (U) bit N Y
Audio sampling frequencies (KHz) 32, 44.1, 48 (RX); 48 (TX)
Audio sample word length (bit) 16- 24 bit (RX); 20 bit
(TX)
30 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
ADM/ASM-680x Embedded Audio
Overview
Chapter 3
Monitoring Serial Distribution
Amplifier Modules
The ADM and ASM series products address the need for low-cost
monitoring of audio signals that are embedded within the serial video
signal. The ASM provides analog audio outputs while the ADM has both
analog and digital (AES) output capability. To view the number and
types of outputs provided by each module when mounted in either the
FR-680x or FR-7001 series mounting frames. See “Mounting Frames and
Modules” on page 32.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 31
Specifications and designs are subject to change without notice
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules
Frames and Modules
Back
Module Frame
Module/
Adaptor
ASM-6800-68 FR-680X 6800B-AA Yes 1 Stereo No No
ASM-6800-70 FR-700X ASM-6800-M Yes 2 Stereo No No
ASM-6804-68 FR-680X 6800AA No 2 Stereo No No
ADM-6800-68 FR-680X 6800B-AD Yes None No 2 Stereo
ADM-6800-70 FR-700X ADM-6800-M Yes 1 Stereo No 2 Stereo
ADM-6800-C FR-680X N/A Yes None 2x (2 Stereo) No
ADM-6800-C-70 FR-700X ADM-6800C-M Yes None 2x (2 Stereo) No
ADM-6804-68 FR-680X 6800AD No 1 Stereo No 2 Stereo
ADM-6804-70 FR-700X ADM-6804-M No 2 Stereo No 2 Stereo
ADM-6804-BC-68 FR-680X 6804BC-AA No 1 Stereo 2x (2 Stereo) No
ADM-6804-BC-70 FR-700X ADM-6804BC-M No 2 Stereo 2x (2 Stereo) No
4 SDI
Out
Analog
Audio
75
Digital Audio
(AES/EBU)
Ω 110Ω
• The ASM-6800 doubles as a serial distribution amplifier providing
four reclocked serial outputs and an embedded audio monitor. It also
provides two or four analog audio outputs derived from one or two
embedded AES/EBU audio channels. The demultiplexed audio
channels can be directly monitored via balanced, low-impedance
analog audio outputs.
• The ASM-6804 provides four analog audio outputs when used in the
FR-680x series mounting frames. The ADM-6800 is capable of
providing both analog and digital audio output signals. It has four
reclocked serial digital video outputs, two or zero analog audio
outputs depending on the mounting frame, and two balanced digital
audio output channels.
• The ADM-6804 provides two or four analog audio outputs and two
balanced digital audio channel outputs, depending upon the
mounting frame used. The ADM-6800C provides four reclocked
serial digital video outputs and two single-ended AES channels each
with two outputs. The ADM-6804BC, used only in the FR-680x series
mounting frames, has two balanced AES output channels and two
single-ended AES channels each with two outputs.
32 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Frames and Modules Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
• The ADM-6804BBC, used only in FR-7001 frames, has two balanced
AES output channels, two single-ended AES channels each with two
outputs and two analog audio outputs.
The ADM-6804BC (-70 and -68) has two single-ended AES channels
each with two outputs and two or four analog audio outputs
depending on the mounting frame.
All modules accept composite (143Mb/s) or component (270Mb/s, 525
or 625 line) video with audio multiplexed into the ancillary data area
according to SMPTE 272M. The operating mode (incoming serial video
data rate) is set by a jumper setting (J2).
See Figure 3-6 ‘‘ADM/ASM-680X PCB Jumper and Switch Locations’’ on
page 46 for more information.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 33
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules
Serial Video Input
Item Specifications
Standards SMPTE: 259M-A; 143 Mb/s, 525 (NTSC)
259M-C; 270 Mb/s, 525/625 (NTSC/PAL) component
272M-AB audio embedding
Connector BNC per IEC 169-8
Impedance 75
Return Loss 18 dB to clock frequency
Signal Level 800 mV ±10%
Common Mode
Rejection
Equalization Automatic up to:
Ω
30 Vp-p, up to 60 Hz
21 dB for 143 Mb/s
23 dB for 270 Mb/s
Serial Video Outputs (ASM-6800 only)
Item Specifications
Number of Outputs 4
Standards SMPTE:
259M-A; 143 Mb/s, (525 NTSC)
272M-AB audio embedding
259M-C, 270 Mb/s, 525/625 component
Connector BNC per IEC 169-8
Impedance 75
Return Loss 18 dB to clock frequency
Signal Level 800 mV ±10%
DC Offset 0 V ±0.5 V
Rise and Fall Time 400-700 pS (20 to 80% amplitude)
Overshoot 10% of amplitude (all outputs terminated)
34 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Ω
Frames and Modules Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
Analog Audio Outputs
Item Specifications
Number of Outputs Up to 2 in 6800 series frames
Up to 4 in 7000 series frames
Connector Type Removable barrier strip
Max. Output Level 24 dB @ full scale (balanced)
- intended for high Z loads
Peak Output Adjustable from 6 to 24 dBu
Impedance 66
THD+N 67 dB @ 1 kHz 0 dBFS, typical
Signal to Noise > 90 dB (50-20kHz)E
Inter-channel
Crosstalk
Frequency Response
(@ full scale output)
Power Requirement
ASM-68xx
Power Requirement
ADM-68xx
Single-ended Digital
Audio Outputs
Number of outputs
Standards SMPTE 276M-1995 and ANSI S4.40-1992
Ω balanced
> 90 dB (50-20kHz)
• 50 Hz - 10 kHz: 0 ±0.15 dB
• 10 kHz - 20 kHz: 0 -0.3 dB
Positive rail: 4.3 W
Negative rail: 0.70 W
Total: 5.0 W
Positive rail: 4.5 W
Negative rail: 2.9 W
Total: 7.4 W
Number of outputs:
2 outputs of both AES Ch1 and AES Ch2
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 35
Impedance 75
Level 1.0 Vpp (±50 mV)
DC Offset 0.0 V (±50 mV)
Rise/fall (10%-90%)
33-42 ns
Short Circuit
Tolerance
Ω
Capable of driving the data over 350 meters of coax
Output still maintains compliance with SMPTE
276M specifications with 1 short per output channel
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules
A
A
Balanced Audio Outputs
Item Specifications
Number of Outputs 1 output at 1 or 2 AES channels
Standards AES 3-1992/ANSI 54.40-1992
SERIAL
VIDEO
1 2 3 4
DEMUX
UDIO
GROUP
SELECT
Impedance 110
VID_PRES
AUD_PRES
AUD_ERR
NO_LOCK
MAIN
SWAP
1A
1B
2A
2B
Ω
MONITOR/
REMOTE
SWAP
DACS
ANALOG
OUTPUTS
36 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
ES ENCOD ER DRIVERS
Figure 3-1. ADM Series Modules
AES
OUTPUTS
Frames and Modules Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
A
A
VID_PRES
AUD_PRES
AUD_ERR
NO_LOCK
1 2 3 4
SERIAL
VID EO
DEMUX
UDIO
GROUP
SELECT
1A
1B
2A
2B
MAIN
SWAP
MONITOR/
REMOTE
SWAP
Figure 3-2. ASM Series Modules
Module Edge Controls and Indicators
SMPTE 272M stipulates that embedded audio must be packaged into
groups, and that each group may be comprised of a maximum of two
digital audio channels in the AES format. In turn, each AES channel is
composed of two monaural audio channels. Thus, one audio group may
contain up to four monaural audio channels. For purposes of this
manual, the main AES channels are designated as 1 and 2 and the
sub-channels as A and B. Therefore, an audio group can be thought of as
containing channels 1A, 1B, 2A, and 2B.
DACS
NALOG
OUTPUTS
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 37
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules
Channel Swap Control
Two types of swap control are provided:
• A main swap which routes particular de-embedded audio channels to
specific outputs.
• A monitor swap which is used to swap only the analog outputs for
monitoring purposes. This swap does not affect the AES digital
output routing.
The ASM series modules provide the same module edge-control features
as the ADM series, but the ASM provides only
the main and monitor swaps redundant. The user can use either swap to
perform the appropriate routing to outputs.
The intention of main swap control is to allow the user to appropriately
set the routing of particular audio channels to the specific output
connectors. The main swap control affects both analog and digital
outputs. SW1 enables a swap between channel pairs 1 and 2. SW2 enables
a swap between the A and B channels within each channel pair. This is
functionally illustrated inFigure 3-1 ‘‘ADM Series Modules’’ on page 36
and Figure 3-2 ‘‘ASM Series Modules’’ on page 37, and is summarized in
the table below:
analog outputs, making
Main swap affects both AES and
analog audio outputs.
Main Swap DIP SW1 DIP SW2
No Swaps Down Down
Swap 1 with 2 Up Down
Swap A with B Down Up
Swap 1 with 2, Swap A with b Up Up
38 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Frames and Modules Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
Monitor Swap
The monitor swap control is controlled via convenient toggle switches at
the front of the module. As shown in the block diagram, monitor swap
only affects the analog output in the ADM series. This allows the user to
monitor the analog outputs on the second channel while not affecting
the AES outputs.
Monitor swap affects the analog
audio outputs only.
This is functionally illustrated in the table below:
Main Swap DIP SW2 DIP SW3
Normal Down Down
Swap 1 with 2 Up Down
Swap A with B Down Up
Swap 1 with 2, Swap A with B Up Up
Remote control of the swap feature is supported when the module is
installed in an FR-7001 frame. External contact closures are provided for
this feature. This feature is enabled by appropriately setting the Swap
Control mode Jumper, J3. See Figure ‘‘Jumper Configurations’’ on page
44 and Figure 3-6 ‘‘ADM/ASM-680X PCB Jumper and Switch Locations’’
on page 46.
Analog Output Levels
Peak analog audio levels are user-adjustable and accessible pots are
provided at the front of the modules for calibration purposes. Outputs
are factory-set to the following levels:
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 39
• European Countries: 18 dBu corresponds to 0 dBFS input (full-scale
digital)
• Other: 24 dBu corresponds to 0 dBFS input (full-scale digital)
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Frames and Modules
Audio Group Selection
The SMPTE 272M standard stipulates that embedded audio is packaged
into groups. Serial video at 143Mb/s can only support one audio group,
while serial video at 270 Mb/s can support up to four audio groups. (
the table below for the DIP switch settings.)
Audio Group DIP SW3 DIP SW4
See
For 143 Mb/s serial video
applications, Group 1 must be
selected.
Group 1 Down Down
Group 2 Up Up
Group 3 Down Down
Group 4 Up Up
Module Edge Indicator Descriptions
The ASM/ADM series modules have the following module edge
indicators.
LED
Indicator
VID_PRES Indicates the presence of a valid video present or input.
AUD_PRES Indicates the presence of a selected embedded audio group
AUD_ERR Indicates an OR function of checksum error, parity error, and
UNLOCKED Indicates that the audio clock PLL is not locked to the input
Function
(as specified by DIP switches 3 and 4).
data block number error.
video signal; this indicator will also light up in the absence of a
valid video input.
40 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Modules and Adaptors Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
A
A
A
A
A
A
A
A
A
Modules and Adaptors
ASM-6800 Module
When the ASM-6800 module is installed into an FR-7001 frame, the
ASM-6800-M back module must be installed onto the rear panel:
CH2
CH2
AB
CH1
AB
AES
12
CH1
AB
4
SERIAL
OUTPUTS
3
4
SERIAL
OUTPUTS
3
ASM-6800-M
2
A/B
REMO TE
1
INPUT
ADM-6800-M
2
A/B
REMOTE
1
1/2
1/2
1
1
1
1
CH2
AB
AB
CH1
CH1
AB
AB
ANALOG OUTPUTS
ANALOG OUTPUTS
2
2
UNBALANC ED
UNBALANC ED
ES OUTPUTS
ES OUTPUTS
2
2
AES
AES
OUTPUTS
OUTPUTS
12
12
REMO TE
REMO TE
INPUT
INPUT
42
42
SERIAL
SERIAL
OUTPUTS
OUTPUTS
31
31
DM-6804-M
DM-6804-M
A/B 1/ 2
A/B 1/ 2
DM-6800C-M
DM-6800C-M
SERIAL
SERIAL
INPUT
INPUT
ANALOG
INPUT
CH2
AB
CH1
AB
NALOG OUTPUTS
Figure 3-3.
DM-6804BC-M
12
UNBALANCED
ES O UTPUTS
12
REMOTE
SERIAL
INPUT
A/B 1/2
ASM-6800 Module
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 41
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Modules and Adaptors
ADM/ASM Module
When an ADM/ASM module is installed into an FR-680x series frame, a
corresponding overlay is placed on the rear panel:
ASM-6800
SERIAL
INPUT
SERIAL OUTPUT
ANALOG AUDIO
OUTPUT
1B+
1A+
ADM-6800
SERIAL
INPUT
SERIAL OUTPUT
12
34
1B-
1A-
ASM-6804
SERIAL
INPUT
ANALOG AUDIO
OUTPUT
2B+
2A+
1B+
1A+ 1A-
ADM-6804
SERIAL
INPUT
AES
OUTPUTS
2B-
2A-
1B-
ASM-6804-BC
SERIAL
INPUT
BALANCED
AES OUTPUTS
UNBALANCED
AES OUTPUTS
ADM-6804-C
SERIAL
INPUT
2+
1+
12
4
3
AES
OUTPUTS
2-
1-
Figure 3-4.
2+
1+
1B+
1A+
ADM/ASM Module
2-
1-
ANALOG AUDIO
OUTPUT
1B-
1A-
1B+
1A+
SERIAL
OUTPUTS
ANALOG AUDIO
OUTPUTS
1B-
1A-
42 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Modules and Adaptors Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
A
Audio Adapters
The 6800AA, 6800AD, 6800B-AA, 6800B-AD, and 6804BC-AA are
audio adapters that can be placed on top of the overlay and plugged into
the BNCs of the FR-680x series frame for different output formats.
A
(LEFT)
A
(LEFT)
CHANNEL 1
ANALOG
OUTPUTS
B
(RIGHT)
B
(RIGHT)
A
(LEFT)
1
CHANNEL 2
AES
OUTPUTS
6800-AA
B
(RIGHT)
6800-AD
2
12
AB
Figure 3-5.
6800BC-AD
ES
OUTPUTS
6804BC-AA
ANALOG
OUTPUTS
Audio Adapters
6800B-AA
ANALOG
OUTPUTS
AB
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 43
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Jumper Configurations
Jumper Configurations
All jumpers are factory preset such that the module conforms to the
specific type of operation (i.e. model number and associated mounting
frame) specified.
Jumper Positions within a Jumper Block (component side, top view)
Type
ADM-6800-68 FR-680X
ADM-6800-70 FR-7001
ADM-6800-C FR-680X
Mounting
Frame
Front
of Module
J22
J12
J21
J11
AN/DIG AN/DIG AN/DIG
J14
J24
J13
J23
Required Back Box and Jumper
Settings
6800B-AD Rear connector/adapter required,
J31, J32, J33, J34 on “DIG” side
ADM6800-M Rear connector/adapter required,
J11, J12, J13, J14 on “DIG” side
J31, J32, J33, J34 on “DIG” side
No rear connector/adapter required
J31, J32, J33, J34 on “DIG” side
Connector
end of Module
J34
J33
J32
J31
Jumper block (top view)
Front Rear
ADM-6800-C-70 FR-7001
ADM-6804-68 FR-680X
ADM-6804-70 FR-7001
ADM-6804-BC-68 FR-680X
ADM-6804-BC-70 FR-7001
ADM-6800-M Rear connector/adapter required,
J31, J32, J33, J34 on “DIG”side
6800 AD Rear connector/adapter required,
J21, J22, J23, J24 on “DIG” side
J31, J32, J33, J34 on “AN” side
ADM 6804-M Rear connector/adapter required,
J11, J12, J13, J14 on “AN” side
J21, J22, J23, J24 on “DIG” side
J31, J32, J33, J34 on “AN” side
ADM-6804BC-M Rear connector/adapter required,
J31, J32, J33, J34 on “AN” side
31, J32, J33, J34 on “AN” side
ADM6800-M Rear connector/adapter required,
J11, J12, J13, J14 on “AN” side
J31, J32, J33, J34 on “AN”side
44 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Jumper Configurations Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules
Jumper Positions within a Jumper Block (component side, top view)
Type
Mounting
Frame
ASM-6800-68 FR-680X
ASM-6800-70 FR-7001
ASM-6804 FR-7001
Required Back Box and Jumper
Settings
6800B-AA Rear connector/adapter required,
J31, J32, J33, J34 on “DIG” side
ASM-6800-M Rear connector/adapter required,
J11, J12, J13, J14 on ”AN” side
J31, J32, J33, J34 on “AN” side
6800AA Rear connector/adapter required,
J21, J22, J23, J24 on “AN” side
J31, J32, J33, J34 on “AN” side
Jumper block (top view)
Front Rear
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 45
Chapter 3: ADM/ASM-680x Embedded Audio Monitoring Serial Distribution Amplifier Modules Jumper Configurations
46 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Figure 3-6. ADM/ASM-680X PCB Jumper and Switch Locations
Overview
Chapter 4
DAC-6801 Digital to Analog
Component Converter
The DAC-6801 Digital to Analog Component Converter addresses the
requirements of broadcasters and video professionals for component
digital to analog 4:2:2 conversion. The DAC-6801 supports the following
standards in 625 and 525 line standards, with and without setup as
appropriate:
•SMPTE/EBU GBR and YPbPr
•NTSC-related GBR
• MII-related GBR and YPbPr
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 47
•BETACAM YPbPr
Specifications and designs are subject to change without notice.
Chapter 4: DAC-6801 Digital to Analog Component Converter Features
Features
The DAC-6801 has the following features:
• 10-bit processing with 14-bit interpolation
• Component analog output with color space conversion,
GBR or YPbPr
•Separate sync output
•Dual outputs
• Serial digital SMPTE 259M-C (270 Mb/s) input
• Selectable sync on GBR
• 4x oversampling Y, 8x oversampling PbPr
• Variable vertical blanking up to line 20 for 525 and line 22 for 625
• Low power - 6.5 W
• Color-bar generator
Program In
Aut o EQ
See Figure 4-7 for a functional block diagram of the DAC-6801.
Rec loc k
& SP
Flags
EDH
Detect
Program Locking & Control
Sync Insertion/blanking
Color Bar Generator
Figure 4-7. DAC-6801 Functional Block Diagram
EDH
Detect
1:2
1:2
Inter pol ators
Colo r
Matri x
Sync out (.3V)
Y/G Out
B/Pb Out
Y/Pr Out
48 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Installation Chapter 4: DAC-6801 Digital to Analog Component Converter
Installation
The DAC-6801 back module connectors are as follows, with two outputs
per signal. See Figure 4-8 below.
Signal Description
Serial In SMPTE 259-C Serial Inputs
G/Y Green or Y signal
B/B-Y Blue or B-Y signal
R/R-Y Red or R-Y signal
Sync Out External color black
Front Edge Layout
SYNC
OUT
R/R-Y
B/B-Y
G/ Y
SERIAL
IN
Figure 4-8. DAC-6801 Back Module Connectors
The DAC-6801 front-edge layout is shown in the following figure. The
two switches on the front are used for setup and control. Hex SW1 has 16
positions, Hex 0 to F. SW2 is a toggle type switch. Press up or down to
toggle. See Figure 4-9 on page 50.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 49
Chapter 4: DAC-6801 Digital to Analog Component Converter Installation
Sw1
Toggle
Sw2
LEDs
Hex
525
AUTO
625
LOCK 1
LOCK 1LOCK
ERROR
SMPTE
BETA
M-II
NTSC
GBR
Y, Pr, Pb
DETENT
AC TIVITY
J1 J1
System Firmware
Figure 4-9. Front Edge Switches/LEDs
DAC-6801 LEDs illuminate as follows:
LEDs Function
U14
CR
Phase
CB
Phase
525 Indicates the module is running in 525 line mode.
AUTO Indicates the module is running in AUTO mode: the line
mode is automatically changed as per the input signal.
625 Indicates the module is running in 625 line mode.
LOCK Indicates the module is locked to the input serial video.
ERROR Indicates the module has detected EDH errors in the input
serial video.
SMPTE,
BETA,
Indicates the current analog level standard, generated at
output.
M-11, NTSC
GBR and Y,
Indicates the current color matrix utilized.
Pr, Pb
SETUP Indicates setup (pedestal) is added to output video.
SYNC G Indicates sync inserted on G output in GBR mode.
50 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Installation Chapter 4: DAC-6801 Digital to Analog Component Converter
LEDs Function
SYNC B+R Indicates sync inserted on B+R outputs in GBR mode.
DETENT Indicates gain or offset has been modified (from factory
settings) with SW1 in Position 0. This LED illuminates as
SW1 is rotated (in positions 2 through 7) indicating which
parameter has been adjusted for gain and offset. The Detent
LED blinks when an invalid standard has been selected; for
example, 625 NTSC.
ACTIVITY Indicates calibration activity; used only during alignment.
Sync
Phas e
Config
Error
U4
System Firmware
CB
Phas e
CR
Phas e
Figure 4-10. DAC-6801 Board Diagram
CB
Gain
CR
Gain
J8: HI-Z / 75
J5: HI-Z / 75
J6: HI-Z / 75
J7: HI-Z / 75
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 51
Chapter 4: DAC-6801 Digital to Analog Component Converter Front Edge Control
Front Edge Control
The DAC-6801 is operated through the front edge controls using Hex
SW1 and Toggle SW2. SW1 selects the parameter to be adjusted and SW2
The Act ive mode selection is
indicated by the flashing LED.
performs the adjustment/selection.
The following table illustrates the DAC-6801 front edge controls:
SW1
Position
0 Operation Normal operation does not require any operator
1Mode
2GBR
Name of
Function
Select
YPrPb/Gain
Purpose
input. There is no action for SW2.
Provides the Standard Selection or mode of
operation.
Perform the following steps to make a selection:
1. Set HEX SW1 to position 1.
2. Toggle SW2 Up to move through all of the
Operating modes. The corresponding LED
illuminates as the selection is toggled.
3. Toggle SW2 Down to change the selection
inside the mode. The corresponding LED
illuminates as the selection is toggled.
Allows the operator to change the overall gain on
all three channels at the same time, to
compensate for variable output gains.
SW2
Position
UP
DN
UP
DN
UP
DN
SW2
Actions
No Action
No Action
Change
Mode
Change
Selection
Increase
Gain
Decrease
Gain
3 Pb/B Gain Allows the operator to change the gain on the Pb
Channel independent of the other channels.
4 Pr/R Gain Allows the operator to change the gain on the Pr
Channel independent of the other channels.
5 Y/G Offset This control allows the operator to change the
DC offset on the Y channel independent of the
other channels.
52 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
UP
DN
UP
DN
UP
DN
Increase
Gain
Decrease
Gain
Increase
Gain
Decrease
Gain
Increase
Offset
Decrease
Offset
Front Edge Control Chapter 4: DAC-6801 Digital to Analog Component Converter
SW1
Position
6 Pb/B Offset This control allows the operator to change the
7 Pr/R Offset Allows the operator to change the DC offset on
8 H Delay This control allows for horizontal timing
9 Not Used Not Used Not Used
A Not Used Not Used Not Used
Name of
Function
Purpose
DC offset on the Pb channel independent of the
other channels
the Pr channel independently from the other
channels.
adjustments (delays) between the input serial
video and analog output. The adjustment is
made in 37 ns steps (increments or decrements)
based on a 27 MHz clock frequency. The range is
from a minimum of 5
µs to one line length delay
SW2
Position
UP
DN
UP
DN
UP
DN
SW2
Actions
Increase
Offset
Decrease
Offset
Increase
Offset
Decrease
Offset
Increase
Delay
Decrease
Delay
B Not Used Not Used Not Used
C Internal
Color Bars
DVertical
Blanking
EFactory
Recall
F Not Used Not Used
Enables the Color Bars signal. The bars are 100%
luma and 75% chroma: 100/0/75/0. The
specified level for each standard refers to 100%
color bar levels: 100/0/100/0, 100/7/100/0, or
100/7/.5/100/7.5 for GBR. (See "Color Bar
Levels" on page 55)
Allows the operator to vary the blanking width
up to line 20 in 525 and line 625 standard.
Allows the operator to recall the factory auto
calibrated levels for the given input. This recall
resets all offsets to zero and restores the factory
Luma and Horizontal phases.
UP
DN
UP
DN
UP
DN
Enabled
Disabled
Increase
Blanking
Decrease
Blanking
Recall
Recall
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 53
Chapter 4: DAC-6801 Digital to Analog Component Converter Front Edge Control
Switches
Each of the switches, functions, and actions, is discussed in the following
table:
Mode Selections Purpose
Standard 525
AUTO
625
Format SMPTE
BETA
MII or NTSC
Matrix GBR or YPbPr Allows the user to select the input
Setup On/Off
Sync Source C/Y
BLK
TTL
Allows the operator to select the input
line input. The auto position will
automatically determine the input line
standard and set the system accordingly.
Allows the user to select the input
format.
matrix.
• An On/Off control based on the input
standard.
• On/Off (enabled), the setup is added
to the analog signal in the digital
domain.
Sync source selects are as follows:
• Internal from Y/G channel
•External color black
•External TTL level
Data Width 10 BIT
8 BIT
54 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Data width is selectable between 10-bit
and 8-bit. In 8-bit mode the sampled
10-bit data is rounded to 8 bits.
Front Edge Control Chapter 4: DAC-6801 Digital to Analog Component Converter
Color Bar Levels
525, YPbPr, with
Setup
SMPTE 700 mV 700 mV 700 mV
BETA 714 mV 1008 mV 1008 mV
MII 700 mV 648 mV 648 mV
NTSC Invalid
SMPTE Invalid
BETA 714 mVp-p
MII 700 mVp-p
NTSC Invalid
YPBPr
934 mV 934 mV
660 mV, 54 mV
setup
648 mV 648 mV
648 mV, 52 mV
setup
525, GBR, with
No Setup
SMPTE 700 mV 700 mV 700 mV
BETA Invalid
MII 700 mV 700 mV 700 mV
NTSC 714 mV 714 mV 714 mV
GBR
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 55
Chapter 4: DAC-6801 Digital to Analog Component Converter Front Edge Control
525, YPbPr, with
Setup
525, GBR, with
Setup
SMPTE Invalid
BETA Invalid
MII-related 700 mVp-p
NTSC-related 714 mVp-p
YPBPr
GBR
648 mV, 52 mV
setup
660 mV, 54 mV
setup
700 mVp-p
648 mV, 52
mV setup
714 mVp-p
660 mV, 54
mV setup
700 mVp-p
648 mV, 52
mV setup
714 mVp-p
660 mV, 54
mV setup
625, YPbPr Y PB Pr
EBU 700 mV 700 mV 700 mV
BETA non-EBU 700 mV 934 mV 934 mV
MII-related Invalid
NTSC-related Invalid
625, GBR G B R
EBU 700 mV 700 mV 700 mV
BETA Invalid Invalid Invalid
MII-related Invalid Invalid Invalid
NTSC-related Invalid Invalid Invalid
56 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Analog Adjustments Chapter 4: DAC-6801 Digital to Analog Component Converter
Analog Adjustments
Pb Phase and Pr Phase allow fine phasing of the Pb and Pr channels to
the Y channel within ± 5 ns. They are set in the factory, and do not need
adjusting.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 57
Chapter 4: DAC-6801 Digital to Analog Component Converter Specifications
Specifications
Serial Video Input
Item Specifications
Standards SMPTE 259M-C; 270 Mb/s, 525/625
Connector BNC per IEC 169-8
Impedance 75
Return Loss > 18 dB to clock frequency
Common Mode
Rejection
Equalization Automatic up to 22 dB
Component Outputs
Item Specifications
Number of Outputs 6 BNCs: 2 sets of G/Y, B/B-Y, R/R-Y
Output Standards SMPTE, Betacam, MII, NTSC (Y, B-Y, R-Y, or GBR
Impedance 75
Return Loss > 36 dB to 5 MHz on all outputs
Quantizing 10 bits
Gain Adjustable
Range
Ω
30 Vp-p, up to 60 Hz
where applicable)
Ω
> ± 30%
DC Adjustable Offset ± 5 mV
Frequency Response < ± 0.1 dB to 5 MHz
S/N Ratio > 70 dB
Adjustable Delay
Adjustable Vertical
Blanking
58 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
∼5 µs to 1 line
10 – 20 lines for NTSC
6 – 22 lines for PAL
Specifications Chapter 4: DAC-6801 Digital to Analog Component Converter
Sync Outputs
Item Specifications
Number of Outputs 2
Output Level 0.3 Vp-p
Power Consumption
Item Specifications
6.5 W + 6.5 1A
-6.5 35 mA
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 59
Chapter 4: DAC-6801 Digital to Analog Component Converter Specifications
60 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Audio to Analog Audio Converter
Overview
Chapter 5
DAC-6880 AES/EBU Digital
The DAC-6880 Digital Audio to Analog Audio Converter converts a
standard 20-bit AES3-1992 digital signal to its analog equivalent. The
unit is available with a 110
Accepting data at 32 kHz, 44.1 kHz, and 48 kHz, the DAC-6880 is a
complete digital audio to stereo analog audio converter. The module
receives and decodes data according to the AES3-1992 standard and will
identify a loss of input or clock with a card front error LED. The D/A
converter utilizes a 128X oversampled delta-sigma modulator and
filtering to provide high quality interpretation of 20 bit data.
Ω balanced input or 75Ω coaxial input.
The maximum analog output
level is +28 dBu.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 61
Converted data is distributed to dual analog stereo outputs (two left, two
right). Full-scale analog output level is jumper-selectable for either +18
dBu or +24 dBu with ± 6 dB card front adjustment.
Outputs are subject to Leitch’s high broadcast quality standards. The
module is available for use in all 6800 and 7000 series frames, providing
an economical standalone unit, as well as a system unit.
Specifications and designs are subject to change without notice.
Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Overview
Figure 5-1. AES-6880 Functional Block Diagram
62 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Operation Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter
Operation
Input Impedance
The DAC-6880 accepts either 110Ω balanced or 75Ω unbalanced digital
audio signals. The input impedance is set at the factory by the rear
module/adapter ordered and the front card-edge jumpers:
•To set to 75
•To set to 110
Ω:
Ω:
Terminated or Looping Inputs
The unit is factory set for looping inputs. To adjust the input impedance
to accommodate terminated inputs (non-looping) or looping inputs, use
the following instructions:
•Terminated Inputs:
• Looping Inputs:
Full-Scale Analog Output Level
The full-scale analog output level can be set to +18 dBu or +24 dBu
through mid-card jumpers. To set the output level to +18 dBu, set
jumpers J3 and J4 to the frontmost position. To set the output level to
+24 dBu, set jumpers J3 and J4 to the rear position.
Set jumpers J5 and J6 to front most position
Set jumpers J5 and J6 to the rear position
Set jumpers J7 and J8 to the rear position
Set jumpers J7 and J8 to frontmost position
POWER ON
ERROR
J7
J8
J6
J5
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 63
DC-DC
CONVERTER
J3
18
24
dBu
dBu
DAC-6880
J4
18
24
dBu
dBu
Figure 5-2. DAC-6880 Full-Scale Analog Output Level
Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Operation
Output Level Adjustment
The output level may be adjusted ± 6 dB, from the front of the unit, by
adjusting the variable resistors R9 and R10.
The maximum analog output
level is + 28 dBu.
Power and Error Indicators
The DAC-6880 indicates power on with the green Power On LED and
input signal error with the red Error LED. Both LEDs are located on the
front card edge.
Power On
Err or
J7
J8
J6
J5
R9
R10
(Green)
(Red)
Right
Left
64 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Figure 5-3. Card-Edge View
Operation Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter
Rear Module/Adapter Connections
When shipped, the modules are set to looping inputs. See “Terminated
or Looping Inputs” on page 63.
No. of
Module Frame Input Format
Analog
Outputs
DAC-6880-70B 7001 series 110Ω Balanced
DAC-6880-70C 7001 series 75Ω Coaxial
DAC-6880-68C 6800 series 75Ω Coaxial
AES Inp ut
ANALO G AUDIO OUTPUTS
Output 1 Output 2
Left Right RightLeft
OUTPUTS
AES3-1902
SMPT 276M
SMPT 276M
Looping Inp u t
ANALOG AUDIO OUTPUTS
Output 1 Output 2
Left Right RightLeft
2 Dual
(2 left 2 right)
2 Dual
(2 left 2 right)
2 Dual
(2 left 2 right)
ANALOG AUDI O OUTPUTS
Output 1 Output 2
Left Right RightLeft
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 65
86
7
Plug In
Audio Adapter
Module
5
42
31
AES
INPUT
Figure 5-4. Rear Module/Adapter Connections
Rear of
6800 Series
Frame
Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter Specifications
Specifications
Input
Item Specifications
Input Number 1 (20-bit, two-channel AES signal)
Input Coupling Transformer Coupling
Output
Input Impedance/
Type
Maximum Input
Signal Level
Minimum Input
Signal Level
110
Ω balanced or 75Ω coaxial
7.0 Vp-p for 110
1.1 Vp-p for 75
2.0 Vp-p for 110
100 mVp-p for 75
Ω balanced signal
Ω coaxial signal
Ω balanced signal
Ω coaxial signal
Item Specifications
Output Number 2 (dual stereo, 2 left, 2 right)
Frequency Response ± 0.1 dB (20 - 20 kHz)
Linearity ± 1.0 dB to -100 dBFS
Signal to Noise Ratio > 100 dB (20 - 20 kHz)
THD+N < 0.004% (20 - 20 kHz @ 0 dBFS = 24 dBu, High Z
load)
IMD < -90 dB (CCIF two-tone test @ 0 dBFS = 24 dBu,
High Z load)
Full-Scale Analog
Output Level Range
66 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
+ 12 dBu to + 28 dBu
DAC-6880 Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter
DAC-6880
Implementation Chart
The following table describes the functions of the DAC-6880:
Byte Bit Function RX TX Remarks
0 0 [0] Consumer use
[1] Professional use
1[0] Audio
[1] Nonaudio
2 - 4 (emph.) [000] Not indicated
[100] No emphasis
[110] 50/15 ms
[111] CCITT J17
5[0] Fs locked
[1] Fs unlocked
6 - 7 [00] Not indicated
[01] 48 KHz
[10] 44.1 KHz
[11] 32 KHz
10 - 3 (Channel
mode)
[0000] Not indicated
[0001] Two channel
[0010] Mono
[ 0 0 1 1 ] P r i m a r y / S e c o n d a r y
[0100] Stereo
[0101] to [1111]
Y
Y
Y
N
N
N
N
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
4 - 7 (User bit
mode)
20 - 2 (Aux. bit
usage)
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 67
[0000] Not indicated
[0001] 192 bit
[0010] AES 18
[0011] User-defined
[0100] to [1111]
[000] Not indicated
[001] Audio data
[010] Coord.
[011] to [111]
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
Chapter 5: DAC-6880 AES/EBU Digital Audio to Analog Audio Converter DAC-6880
Byte Bit Function RX TX Remarks
3- 5 (Sample
length)
[000] Not indicated
[100] All other states
Y
Y
Y
N
N
N
3 0 - 7 Multichannel modes N N
4 0 - 1 AES11 sync reference N N
50 - 7 Unused NN
6 - 9 ASCII source ID N N
10 - 13 ASCII destination ID N N
14 - 17 Local sample address N N
18 - 21 Time-of-day address N N
22 0 - 7 C data reliability N N
23 0 - 7 CRCC N N
Validity (V) bit Y N
User (U) bit N N
Audio Sampling Frequencies (KHz) 24-54 KHz (RX)
Audio Sample Word Length (bit) 16-20-bit (RX)
68 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
Decoder with Frame Synchronizer
Overview
Chapter 6
DEC-6801/DES-6801
Module
The DEC/DES-6801 Decoder with Frame Synchronizer is a compact
and economical module which converts the composite NTSC, PAL-B, or
PAL-M analog composite signals into component (4:2:2) serial video
using a three-line adaptive comb filter. The unit provides analog video
preprocessing and a wide range of digital adjustments.
Specifications and designs are subject to change without notice.
6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual 69
Chapter 6: DEC-6801/DES-6801 Decoder with Frame Synchronizer Module Specifications
Specifications
Analog Video Input
Item Specifications
Standards NTSC, PAL-B, PAL-M
Level 1 Vp-p ±3 dB
Impedance 75
Return Loss > 40 dB to 5.75 MHz
Common Mode
Rejection
Common Mode
Range
Analog Video Processing
Item Specifications
Gain Range ± 3 dB
Hue Range
(NTSC only)
Digital Video Processing
Item Specifications
Input 10-bit quantized video
Ω
> 60 dB at 50/60 Hz
± 5 Vp-p
± 180
°
Decoding Algorithm 3-line adaptive comb
Frequency Response ± 0.1 dB to 5.75 MHz
Differential Gain 1%
Differential Phase 1
Signal to Noise 59 dB
Delay 1 H +2 µs (DEC-6801)
70 6800/7000 Series - Audio and Video Multi/Demultiplexing Products Installation and Operation Manual
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