Accom ASWR8150 User manual

ASWR8150
Component
Digital
Switcher
Technical
Guide
PN 9100-0212-04
Copyright© May 2000
Accom, Inc.
1490 O’Brien Drive
Menlo Park, California 94025

COPYRIGHT 2000 Accom, Inc.
ALL RIGHTS RESERVED. NO PART OF THIS
PUBLICATION MAY BE REPRODUCED OR USED IN
ANY FORM BY ANY MEANS WITHOUT WRITTEN
PERMISSION OF THE PUBLISHER.
Many of the designations used by manufacturers
and sellers to distinguish their products are claimed
as trademarks. Where those designations appear in
this manual, and Accom was aware of a
trademark claim, the designations have been
printed in initial caps or all caps.
Note
This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the technical and
operations manuals, may cause harmful interference to
radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference
in which case the user will be required to correct the
interference at his own expense. Changing or
modifying this equipment without express approval by
Accom could void your right to operate the equipment.
The drawings, diagrams, and specifications set
forth on the attatched are the property of Accom,
Inc. and are provided in confidence to the user for
the sole purpose of using the equipment
associated with the attatched document, and are
not to be disclosed to a third party or reproduced
in any manner without the express prior written
permission of Accom, Inc.

Table of Contents
Introduction
Features and Options................................................... 1-1
System Components .................................................... 1-2
Video Processing Functional Description .................. 1-4
Video Input Modules [1]..................................................1-4
Crosspoint Matrix [2] .......................................................1-4
Crosspoint Matrix Inputs..........................................1-4
Crosspoint Matrix Outputs.......................................1-8
Color Corrector [3]..........................................................1-10
Key/Border Processor [4]..............................................1-12
Inputs..........................................................................1-12
Outputs ......................................................................1-12
Key Processing..........................................................1-12
Key Modifiers............................................................1-14
Border Processing.....................................................1-14
Color Matte Generators [5]............................................1-14
Super Matte Generator [6] .............................................1-14
Black Generator [7] .........................................................1-14
Wipe Pattern Generators [8]..........................................1-16
Framestores [9] ................................................................1-16
Key Monitor Selector [10] ..............................................1-16
Mix/Effect Processor [11]..............................................1-16
PGM/PST /DSK Processor [12] ...................................1-16
Standard Output Module [13] ......................................1-18
Auxiliary Outputs (Optional).................................1-18
Auxiliary Reference (Aux Ref) ...............................1-18
Component Analog Monitor Outputs ..................1-18
Program Outputs......................................................1-18
Preview Output ........................................................1-18
Enhanced (Frame Delay) Output Module [13] ..........1-20
Auxiliary Outputs (Optional).................................1-20
Auxiliary Reference (Aux Ref) ...............................1-20
8150 Technical Guide Table of Contents
9100-0212-04 - May 2000 Contents I

Component Analog Monitor Outputs ..................1-20
Program Outputs......................................................1-20
Preview Output ........................................................1-20
Auxiliary 3 and 4 Outputs (Optional)...................1-22
Control Functional Description ................................. 1-24
Signal Chassis ..................................................................1-24
Serial 1, 2, 3 ................................................................1-24
Control Panel ............................................................1-24
GPI (General Purpose Interface)............................1-24
Tally ............................................................................1-24
Control Panel ...................................................................1-24
Control In...................................................................1-24
Control Out ...............................................................1-24
RS-232.........................................................................1-26
RS-422.........................................................................1-26
Keyboard ...................................................................1-26
External Floppy ........................................................1-26
Installation
Unpacking..................................................................... 2-1
Pre-Installation Checks................................................ 2-1
Signal Chassis ....................................................................2-1
Control Panel .....................................................................2-1
Power Consumption..................................................... 2-1
Signal Chassis ....................................................................2-1
Voltage Selection ........................................................2-1
Control Panel .....................................................................2-2
Voltage Selection ........................................................2-2
Cooling and Airflow ..................................................... 2-3
Signal Chassis ....................................................................2-3
Control Panel .....................................................................2-3
Dimensions and Physical Installation ......................... 2-4
Signal Chassis ....................................................................2-4
Front View ...................................................................2-4
Top View......................................................................2-4
Side View .....................................................................2-4
Control Panel .....................................................................2-6
Top View......................................................................2-6
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II Contents 9100-0212-04 - May 2000

Back View ....................................................................2-6
Left/Side View ...........................................................2-6
Right/Side View.........................................................2-6
Control Panel Cutout Dimensions...........................2-6
External Disk Drive ..........................................................2-8
Signal Chassis Connections ........................................ 2-9
Video Inputs ......................................................................2-9
Inputs 1 - 14 .................................................................2-9
Inputs 15/16 - Auxiliary (AUX) 3/4 .......................2-9
Module Options ..............................................................2-10
Dual Serial Digital Input .........................................2-10
Dual Component Analog Input .............................2-11
Component Video + Key Input..............................2-11
Composite Analog Video + Key Input .................2-12
Dual Parallel Digital Input......................................2-12
Aux 3, 4 Output ........................................................2-12
Output Modules..............................................................2-13
Output Module Configurations.............................2-13
Output Module Connections .................................2-18
Auxiliary Outputs (AUX 1, AUX 2) ......................2-18
Preview Output (PVW) ...........................................2-18
Program Outputs (PGM 1, PGM 2) .......................2-19
Analog Monitor Output ..........................................2-19
Remote Ports: Serial 1, Serial 2, Serial 3 (LINC) .2-20
Control Panel ............................................................2-21
GPI ..............................................................................2-21
Tally ............................................................................2-21
AC Mains Power ......................................................2-21
Control Panel Connections ...................................... 2-22
Keyboard ..........................................................................2-22
RS-232 / RS-422...............................................................2-22
Control In .........................................................................2-22
Control Out ......................................................................2-22
External Floppy ...............................................................2-23
Power ................................................................................2-23
Reset Button ..............................................................2-23
8150 Technical Guide Table of Contents
9100-0212-04 - May 2000 Contents III

Using Multiple Control Panels.................................... 2-24
Physical Connections......................................................2-24
Acquiring and De-Acquiring Control .........................2-24
Troubleshooting Hints ...................................................2-25
Signal Chassis Connector Detail............................... 2-26
Serial 1, 2, 3 Connectors ................................................2-26
Serial Port Configuration ........................................2-26
Control Panel Connector ..............................................2-27
GPI Connector .................................................................2-28
GPI Inputs .................................................................2-28
GPI Outputs .............................................................2-30
Tally Connector ..............................................................2-31
Parallel Digital Connector ............................................2-33
Control Panel Connector Detail................................ 2-34
Keyboard Connector .....................................................2-34
RS-232 Connector ...........................................................2-35
RS-422 Connector ...........................................................2-36
Control In, Out Connectors ..........................................2-37
External Floppy Connector ..........................................2-38
Power Connector ............................................................2-39
Option Installation
Option Identification .................................................... 3-3
Aux 1, 2 ...............................................................................3-3
Aux 3, 4 ...............................................................................3-3
DVE Board .........................................................................3-3
4:4:4 Chroma Key ..............................................................3-3
Extended Memory ............................................................3-3
Framestore..........................................................................3-3
Wipe Generator .................................................................3-5
Color Corrector..................................................................3-5
Input Modules ...................................................................3-5
Hard Disk Drive ................................................................3-6
Option Installation ........................................................ 3-7
Aux Bus 1, 2 .......................................................................3-7
Aux Bus 3, 4 .......................................................................3-9
DVE Board .......................................................................3-11
4:4:4 Chroma Key ............................................................3-13
Dual Framestores ............................................................3-16
Table of Contents 8150 Technical Guide
IV Contents 9100-0212-04 - May 2000

Standard or Advanced Wipe Generator .....................3-19
Color Corrector/Color Corrector Bypass ...................3-21
Input Modules .................................................................3-24
Extended Memory ..........................................................3-25
Hard Disk Drive ..............................................................3-27
System
Overview
Signal Chassis ............................................................... 4-2
Major Assembly Locations ..............................................4-2
Main Board Indicators......................................................4-4
Input Module Indicators..................................................4-7
Output Module Indicators...............................................4-8
Component Analog + Key Module Jumpers................4-8
DVE Board (Option) .........................................................4-9
Overview .....................................................................4-9
DVE Board Indicators .............................................4-11
DVE Board Jumpers and Modules ........................4-12
Control Panel ............................................................. 4-15
Menu Buttons .................................................................4-15
Menu Screen Layout & Controls .................................4-16
Menu Display............................................................4-16
Submenu Labels and Controls ...............................4-16
The Keypad Buffer ...................................................4-17
Softkeys and Pushknobs .........................................4-17
Entering and Modifying Parameter Values .........4-18
Clearing and Resetting Values and
UNDO MENU .........................................................4-18
Program/Preset Buttons ...............................................4-19
Transition Control Buttons ...........................................4-20
Quick Keyframe Buttons ...............................................4-21
TimeFrameEffects Editor Buttons ...........................4-22
Delegation Buttons ........................................................4-23
Timeline Buttons ............................................................4-24
The Status Menu.......................................................... 4-25
Fortune .......................................................................4-26
Engineering Setup
8150 Technical Guide Table of Contents
9100-0212-04 - May 2000 Contents V

Introduction................................................................... 5-1
Engineering Menu ........................................................ 5-2
Communications Submenu ............................................5-3
Input Submenu..................................................................5-4
Effects Loop Inputs ...................................................5-4
Setup Inputs ...............................................................5-6
Input Bits......................................................................5-7
Analog Input Setups ..................................................5-7
Gain/Pedstl Offsets ...................................................5-9
H Phase Offsets.........................................................5-10
Composite Input Setups..........................................5-10
Proc Adjust (Gain/Pedstl) ......................................5-11
More Proc Adjust (H Phase/Ofs) ..........................5-12
Key Input Setups ......................................................5-12
Proc Adjust (Gain/Pedstl) ......................................5-13
More Proc Adjust (H Phase/Ofs) ..........................5-13
Output Submenu ............................................................5-14
Output Delay.............................................................5-14
Output Bits ................................................................5-15
H Blanking.................................................................5-15
V Blanking .................................................................5-16
Output Phase.............................................................5-16
Key Mode...................................................................5-17
Miscellaneous Submenu ...............................................5-18
Video Standard .........................................................5-18
Aspect Ratio ..............................................................5-18
Display .......................................................................5-19
Timing ........................................................................5-19
Aux/Txt Retime .......................................................5-21
Lamp Saver................................................................5-23
Software Update Submenu ..........................................5-24
Confirm ......................................................................5-24
Update........................................................................5-24
Diagnostics Submenu ....................................................5-26
Personality Menu ....................................................... 5-28
Input Names Submenu .................................................5-28
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VI Contents 9100-0212-04 - May 2000

Current Selection .....................................................5-29
Name ..........................................................................5-29
Input Assign Submenu .................................................5-30
Assigning Sources to Crosspoints .........................5-30
User Keys & Miscellaneous Submenu ........................5-31
Recording a Macro ...................................................5-31
Auto Menus...............................................................5-32
MENU UNDO Key ..................................................5-32
GPIs Submenu ................................................................5-34
Assign GPIs ...............................................................5-34
Input GPI Functions.................................................5-34
Using the A/B Side (Front/Back) Switch
Function ....................................................................5-36
Using GPI Outputs...................................................5-40
Remote Port Enables Submenu ....................................5-42
Port 1...........................................................................5-42
Port 2...........................................................................5-42
Port 3...........................................................................5-42
GPIs.............................................................................5-42
GPOs...........................................................................5-42
Preview Monitor Overlays Submenu .........................5-43
Safe Action.................................................................5-43
Grid Overlay .............................................................5-43
Overlay Color............................................................5-43
Reference Lines.........................................................5-44
Cursor.........................................................................5-44
Cursor & Ref Line Color..........................................5-44
Disk Drive Operations................................................. 5-45
Setting the Date and Time .............................................5-45
Formatting a Disk ...........................................................5-46
Creating Disk Subdirectories ........................................5-47
Saving Files to Disk.........................................................5-47
Recalling Files from Disk ...............................................5-50
Deleting Files from Disk ................................................5-51
Adding Comments to a Disk File .................................5-52
Showing Disk File Comments.......................................5-52
Saving Multiple Disk Files with One Command.......5-53
Recalling Multiple Disk Files with One Command ..5-54
8150 Technical Guide Table of Contents
9100-0212-04 - May 2000 Contents VII

The Disk Menu ............................................................ 5-56
Save Recall Submenu .....................................................5-57
Drive ...........................................................................5-57
Comment ...................................................................5-57
Comments..................................................................5-57
Save.............................................................................5-58
Recall .........................................................................5-58
Confirm ......................................................................5-58
Directory Submenu ........................................................5-59
Drive ...........................................................................5-59
Make Directory .........................................................5-59
Remove Directory ....................................................5-59
Change Directory .....................................................5-59
Confirm ......................................................................5-59
Delete Copy Submenu ...................................................5-60
Drive ...........................................................................5-60
From............................................................................5-60
To ................................................................................5-60
Delete..........................................................................5-61
Confirm ......................................................................5-61
Format Submenu ............................................................5-62
Drive ...........................................................................5-62
Format ........................................................................5-62
Confirm ......................................................................5-62
Miscellaneous Submenu ...............................................5-63
Date.............................................................................5-63
Time............................................................................5-63
Date & Time ..............................................................5-63
Assembly Removal /Replacement ......................... 5-64
Power Supply Assembly Removal/Replacement .....5-64
Power Supply Output Voltage Adjustment ........5-67
Backup Battery Removal/Replacement......................5-69
Control Panel Disassembly and Assembly.................5-71
Separating the Control Panel Top and Bottom ..5-71
Reassembling the Control Panel Top and
Bottom .......................................................................5-72
"Preread" and the 8150 .............................................. 5-74
VTR Setups for Insert and Preread Editing ................5-75
Table of Contents 8150 Technical Guide
VIII Contents 9100-0212-04 - May 2000

Digital Betacam VTR Settings ................................5-75
D5 VTR Settings........................................................5-76
Effects Loop Processing ............................................ 5-77
Conceptual Background Information..........................5-77
Effects Loop Re-Entry Timing .....................................5-79
Encoding the 8150 Output (NTSC) ............................ 5-84
8150 to A28 Connections................................................5-84
System Timing
General Timing Considerations .................................. 6-1
Introduction .......................................................................6-1
System Locking Reference...............................................6-2
Automatic Input Timing..................................................6-2
Propagation (Throughput) Delay...................................6-2
Aux Output Sources Delayed by Two Lines .........6-3
Aux Output Sources Delayed by 18 Lines .............6-3
Outputs Delayed by 34 Lines ...................................6-3
Outputs Delayed by One Frame (Some 8100s/all
8150s)............................................................................6-4
Auxiliary Reference ..........................................................6-5
Appendix A
8150 Partial Parts List.................................................... A-1
8150 Technical Guide Table of Contents
9100-0212-04 - May 2000 Contents IX

Table of Contents 8150 Technical Guide
XContents 9100-0212-04 - May 2000

Section 1
Introduction
Features and Options
The ASWR8150 offers a unique combination of small physical size and
features traditionally associated with large, expensive post production
switchers. The 8150 is the result of an aggressive ASIC (Application
Specific Integrated Circuit) development program at Accom. Using
ASIC solutions to solve traditional hardware problems has resulted in
an extremely cost effective yet powerful video switcher with an
expanded feature set.
The 8150 is a component digital switcher that conforms to the
international component digital video standards (CCIR 601, CCIR 656,
SMPTE 125M, SMPTE 259M) and switches between the 525/59.94 and
625/50 standards. Full 10-bit signal accuracy is supported for digital
inputs and outputs. The 8150 can accept a variety of input signal formats
via plug-in modules. These include parallel digital, serial digital, and
component analog modules that support a variety of user-selectable
formats.
Functionally, the 8150 has one Mix/Effect bus with two keyers and a
main Program/Preset bus that incorporates a single downstream keyer
with master fade-to-black. Four serial inputs are standard, as are two
serial digital program outputs, a serial digital preview output, and a
component analog (Y/R-Y/B-Y only) monitor output. You can
configure the system with up to 16 inputs with two auxiliary outputs,
or up to 14 inputs with four auxiliary outputs.
Available options include the following:
Dual full color framestores with strobe effects capability.
A package of seven Color Correctors—one per bus.
An Advanced Wipe generator for the M/E and PGM/PST buses.
Wide band 4:4:4 Chroma Keyers for use with high resolution images
from computer graphics or telecines.
An internal 1GB SCSI hard disk drive for storing effects files,
personality files, engineering files, and image files.
An internal, 10-bit, frame-based DVE board for processing video. The
DVE processing includes the following features:
8150 Technical Guide Features and Options
9100-0212-04 - May 2000 Introduction 1-1

SuperShadow–a full bandwidth drop shadow.
SurfaceFX–combines the powerful texture and light source
modeling tools with the advanced UltraWarpfeature. You
can use any 8150 source, including video and key inputs, the
SuperMatte generator, or the Framestores, as the source for a
texture.
Four independent input freeze buffers (two for video, two for
textures).
UltraWarp–an advanced image warping feature.
Channel configurations –one of the features that makes the
8150 DVE option unique is its flexible channel configuration.
The main channel is dedicated for video, and the second
channel can be used for video, key, or shadow. The A video
transformation path is a full bandwidth video channel. The B
channel can process key signals (luminance only), but is also
a full bandwidth video channel. This lets the DVE board
operate in three modes:
Video + Video –you can control both video channels
independently; there is no key channel in this mode.
Video + Key –you can control the video channel and key
channel independently.
Video/Key + Shadow –you can control the combined
video/key channel and the drop shadow channel
independently.
System Components
The 8150 is a flexible system that you can configure to accommodate a
variety of applications. Figure 1-1 shows the main system components.
Physically, the 8150 system consists of a rack mounted Signal Processor
Chassis and one or more Control Panels. You can connect up to four
Control Panels to a Signal Chassis on the Control Panel serial data
communications chain. The Control Panel maximum chain length is
2000 feet (610 meters) for all Control Panels on the chain.
There are three LED indicators on the front of the Signal Chassis:
Left (Green) –Lights to indicate that +5VDC from the power supply
is present.
Center (Green) –Lights to indicate that the main switcher
microprocessor is running.
Right (Amber) –Lights to indicate SCSI hard drive activity.
System Components 8150 Technical Guide
1-2 Introduction 9100-0212-04 - May 2000

The main power switch is in the lower right corner of the Signal Chassis
front panel, under a cover. The switch has a standard label: 0 = off, 1 =
on.
NUMERIC
MENUS
DVE
KEY
MISC
WIPE
COLOR
CRCTR
COLOR
CRCTR
F1
F2
F3
CH A
FREEZE
SAVE
KEYFRAME
SAVE
KEYFRAME
RECALL
KEYFRAME
RECALL
KEYFRAME
FIELD
ACQUIRE
TIMELINE
PREVIOUS NEXT
STOP
NEXT
STOP
NEXT
REV
RUN
PATH
PREVIEW
PATH
PREVIEW
CURSOR
CH B
JOYSTICK
LOCK
JOYSTICK
LOCK
GLOBAL
EFFECTS
TRANS
EFFECTS
TRANS
FRAME
STORE
FRAME
STORE
TIME
LINE
TIME
LINE
DISK
DISK
ENG UNDO
MENU
UNDO
MENU
EFFECTBORDERS
PERSON-
ALITY
PERSON-
ALITY
8150
Figure 1-1 8150 System Components
8150 Technical Guide System Components
9100-0212-04 - May 2000 Introduction 1-3

Video Processing Functional
Description
Video Input Modules [1]
The 8150 can accept 16 video inputs with two auxiliary outputs, or 14
video inputs with four auxiliary outputs. (Two of the four aux output
paths are used for 16-input configurations.) Inputs can be any
combination of video or key sources. The standard system has two Dual
Serial Input modules; additional Input modules are optional. A
Personality menu lets you configure input crosspoint assignments.
Figure 1-2 shows popular input module combinations. Input modules
accept two inputs each. Input video formats can be dual parallel digital,
dual serial digital, dual component analog (with 8-bit A to D),
component analog plus key (with 10-bit A to D), or composite analog
plus key (with 10-bit A to D). Both of the Component Analog Input
modules accept various RGB and Y/R-Y/B-Y component formats, while
the Component Analog + Key module accepts high resolution video for
4:4:4 A to D conversion.
Crosspoint Matrix [2]
An internal 32 input by 32 output crosspoint matrix routes all video
sources in the 8150. A brief description of the matrix inputs and outputs
appears below.
Crosspoint Matrix Inputs
The following list includes all sources available to the 8150. You can type
the crosspoint input number (0-31) of any source and press the Source
Select pushknob in several menus to directly access these sources.
External Video and Key Inputs
The system is configurable for 14 or 16 inputs. (Two auxiliary video
output feeds are used for 16-input configurations.)
INPUT 1 - 14 –User video source inputs; the crosspoint input number
is the physical input number plus one, e.g., input 1 is crosspoint input
number 2, input 2 is crosspoint input number 3, etc.
INPUT 15, 16 –Additional user video source inputs; input 15 is
crosspoint input number 16, and input 16 is crosspoint input number
17. (Configuring these ports as inputs excludes using them as
auxiliary outputs, and vice versa.)
Mix/Effects Processor Outputs
The Mix/Effects processor provides four re-entries to the routing
switcher:
Video Processing Functional Description 8150 Technical Guide
1-4 Introduction 9100-0212-04 - May 2000

1
2
2
Figure 1-2 8150 Video Functional Diagram
8150 Technical Guide Video Processing Functional Description
9100-0212-04 - May 2000 Introduction 1-5

M/E PGM –Mix/Effect main program output; crosspoint input
number 30.
M/E PVW –Mix/Effect look-ahead preview output; crosspoint input
number 31.
M/E LOOP VID SEND –Processed fill video feed for effects looping;
crosspoint input number 29.
M/E LOOP KEY SEND –Processed key feed for effects looping;
crosspoint input number 23.
Program/Preset/DSK Processor Outputs
The Program/Preset/DSK processor provides three re-entries to the
routing switcher:
DSK PVW –Program/Preset/DSK look-ahead preview output;
crosspoint input number 24.
DSK LOOP VID SEND –Processed fill video feed for effects looping;
crosspoint input number 25.
DSK LOOP KEY SEND –Processed key feed for effects looping;
crosspoint input number 26.
NOTE: To route the main program output to an Aux bus
output, select Program as the Preview Source in the
Miscellaneous menu Pvw Bus Ctrl & Misc submenu, and
select DSK Preview as the source for the Aux bus output.
WIPE SEND
Wipe Pattern Send. Use the Mix/Effect or Program/Preset wipe pattern
generator output as an additional key mask source; crosspoint input
number 28.
KEY MON
Key Monitor. Use the selected processed key signal from the M/E or
DSK key processors for monitoring or as a video source; crosspoint input
number 27.
BLACK
The 8150’s own internal black generator; crosspoint input number 0 or
1.
SUPER MATTE
Use the SuperMatte three color background generator output as a
background, border fill, or key fill source; crosspoint input number 18.
FS 1, 2 OUT
Framestore 1 and 2 outputs, if the option is installed. Use these
framestore outputs as still video or key mask sources; crosspoint input
numbers 19 and 20 respectively.
Video Processing Functional Description 8150 Technical Guide
1-6 Introduction 9100-0212-04 - May 2000

2
2
Figure 1-3 8150 Video Functional Diagram
8150 Technical Guide Video Processing Functional Description
9100-0212-04 - May 2000 Introduction 1-7

INTERNAL DVE VIDEO RETURN
Combined channel A and B video output of the internal DVE option;
crosspoint input number 21.
INTERNAL DVE KEY RETURN
Combined channel A and B key output of the internal DVE option;
crosspoint input number 22.
Crosspoint Matrix Outputs
8150 Outputs
AUX 1, 2 –Auxiliary bus outputs for external DVE effects processing
or isolated video/key feeds to other equipment.
AUX 3, 4 –Additional auxiliary bus outputs. Using these ports as
auxiliary outputs excludes using them as inputs 15 and 16, and vice
versa.
MAIN PVW –The feed to the 8150 preview output.
Internal Destinations
BKGND A (Background A) –The video source selected on the
Mix/Effect Background A bus.
BKGND B (Background B) –The video source selected on the
Mix/Effect Background B bus.
FILL 1 –The 4:2:2 fill source selected for M/E keyer 1.
M/E KEY 1 AUX –The 0:2:2 part of a 4:4:4 fill source selected for M/E
keyer 1 if the 4:4:4 Chroma Key option is installed.
KEY 1 –The key source selected for M/E keyer 1.
MASK –The mask source selected for M/E keyer 1; also used as the
0:2:2 part of the key feed if the 4:4:4 Chroma key option is installed.
FILL 2 –The 4:2:2 fill source selected for M/E keyer 2.
M/E KEY 2 AUX –The 0:2:2 part of a 4:4:4 fill source selected for M/E
keyer 2 if the 4:4:4 Chroma Key option is installed.
KEY 2 –The key source selected for M/E keyer 2.
MASK 2 –The mask source selected for M/E keyer 2; also used as the
0:2:2 part of the key feed if the 4:4:4 Chroma key option is installed.
M/E BORDER FILL –The fill source for an M/E wipe border or keyer
border.
LOOP VID RTRN (Loop Video Return) –The dedicated video return
path provided for internal or external effects looping. This output
feeds both the M/E and PGM/PST processors.
LOOP KEY RTRN (Loop Key Return) –The dedicated key return path
provided for internal or external effects looping. This output feeds
both the M/E and the PGM/PST processors.
Video Processing Functional Description 8150 Technical Guide
1-8 Introduction 9100-0212-04 - May 2000