Leitch DPS-575, DPS-575AV, DPS-475, DPS-475AV Service Manual
DPS-475/575
Multi-Function Analog/
Digital A/V Synchr onizer
Service Manual
Part #708-575
COPYRIGHT AND TRADEMARK
I
NFORMATION
Copyright
This document, the DPS-475, DPS-475AV, DPS-575, DPS-575AV, RC-4000, RC475, and DigiDuplex and all related materials are © Copyright 2000, Digital
Processing Systems Inc. All rights reserved.
The printed version of this document is DPS Part Number 708-575 and the version
number is 1.00.
Trademarks
DPS, the DPS logo, DPS-475, DPS-475AV, DPS-575, DPS-575AV, RC-4000, RC475, DPS-470 and DigiDuplex are trademarks or registered trademarks of Digital
Processing Systems Inc.
Microsoft Windows, Windows 95, Windows 98, Windows NT and Internet Explorer
are registered trademarks of Microsoft Corporation. Netscape Navigator is a
registered trademark of Netscape Communications Corporation. All other trademarks
are property of their respective holders.
Caveats
Information in this document is subject to change without notice and does not
represent a commitment on the part of Digital Processing Systems Inc.
This product requires technical and mechanical ability and requires precautions
against electrostatic discharge. The user assumes all risks when this product is
installed by anyone other than an authorized Digital Processing Systems dealer.
i
iii
TABLE OF CONTENTS
Copyright and Trademark Information ......................................................i
Copyright ......................................................................................................................i
Trademarks ...................................................................................................................i
Caveats .........................................................................................................................i
Table of Contents .............................................................................................iii
Introduction .....................................................................................................1
Chapter 1: Installation and Configuration ..................................................3
Installation ....................................................................................................................3
Unpacking and Inspection ......................................................................................3
Mounting ................................................................................................................3
Hardware Options ..................................................................................................3
Chapter 2: Connections ..................................................................................5
Breakout Cables ...........................................................................................................5
Multi-I/O Breakout Cable ......................................................................................5
AES/EBU Audio Breakout Cable [on audio-equipped units only] ........................5
Video Connections .......................................................................................................5
DV Input/Output .....................................................................................................5
S-Video Input ..........................................................................................................6
Component Analog Video Input .............................................................................6
Composite Video Input ...........................................................................................6
Serial Digital Input ................................................................................................6
Serial Digital Reclocked Output ............................................................................6
Serial Digital Outputs ............................................................................................6
Composite Video Output .........................................................................................6
Component Analog Video Output ...........................................................................6
Genlock Reference ..................................................................................................7
S-Video Output (on breakout cable) .......................................................................7
RGB(S) Video Output (on breakout cable) .............................................................7
Auxiliary Composite Output (on breakout cable) ..................................................7
Key Output (on breakout cable) .............................................................................7
Audio Connections .......................................................................................................7
Analog Audio Inputs and Outputs (Terminal Strips) ..............................................7
AES/EBU Inputs (on Audio breakout cable) ..........................................................8
AES/EBU Outputs (on Audio breakout cable) .......................................................8
Audio Delay Pulse/GPI Output (on Multi-I/O breakout cable) .............................8
Serial Digital Embedded Audio Input (SDI) ..........................................................8
Serial Digital Embedded Audio Output (SDI) .......................................................8
Remote Control Ports ...................................................................................................8
RS-232 and RS-422 ................................................................................................9
Ethernet Port ..........................................................................................................9
DCN Port ................................................................................................................9
Use with RC-4000 and RC-475 ..............................................................................9
GPI Inputs (on Multi-I/O breakout cable) .............................................................10
GPI Output (on Multi-I/O breakout cable) ............................................................10
Chapter 3: Operation - Front Panel Controls .............................................11
Resetting the Unit ...................................................................................................12
Menu Controls ..............................................................................................................12
Moving Through the Menus ...................................................................................12
Changing Parameters ............................................................................................13
Remote Control .......................................................................................................13
Status Indicators ...........................................................................................................14
Genlock ...................................................................................................................14
EDH ........................................................................................................................14
TBC .........................................................................................................................14
Autotrack ................................................................................................................14
DigiDuplex .............................................................................................................14
Option .....................................................................................................................14
Video Input Selection ...................................................................................................15
Audio Input Selection ..................................................................................................15
Freeze Controls ............................................................................................................16
Mode Selection ............................................................................................................17
Bypass .....................................................................................................................17
TSG .........................................................................................................................17
Keyer ......................................................................................................................17
N/R ..........................................................................................................................18
Proc Amp Controls and User Keys ..............................................................................18
Automatic Proc Amp Setup (“Gimme Bars”) ........................................................18
Luma ......................................................................................................................18
Black ......................................................................................................................19
Chroma ...................................................................................................................19
Hue .........................................................................................................................19
Memory ...................................................................................................................19
User 1 and User 2 ..................................................................................................20
Option .....................................................................................................................20
DV Control Mode ........................................................................................................20
User-Programmable Keys ............................................................................................21
Power-Up Keys ............................................................................................................21
Force Firmware Download ....................................................................................21
Self-Test Mode ........................................................................................................22
Erase Firmware ......................................................................................................22
Factory Reset ........................................................................................................22
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DPS-475/575 Service Manual
Chapter 4: Menu Overview and Feature Cross-Reference .......................23
Menu Controls ..............................................................................................................23
Moving Through the Menus ...................................................................................23
Changing Parameters ............................................................................................23
Menu Tree ....................................................................................................................24
Feature Cross-Reference ..............................................................................................29
Chapter 5: Menus: Video Setup ....................................................................33
Luma Gain ..............................................................................................................33
Black Level .............................................................................................................33
Chroma Gain ..........................................................................................................33
Hue Phase ..............................................................................................................33
Color Balance - Cb ................................................................................................33
Color Balance - Cr .................................................................................................34
Video AGC ..............................................................................................................34
AGC Bias ................................................................................................................34
Input H-Position .....................................................................................................34
Input Y/C Delay ......................................................................................................34
Sync Mode ..............................................................................................................34
3D Comb Decoder ..................................................................................................35
3D Chroma Motion Bias ........................................................................................35
Comb Decoder ........................................................................................................36
DigiDuplex Mode ...................................................................................................36
Self Setup to Bars ...................................................................................................37
More Video Settings .....................................................................................................37
Hot Switch ..............................................................................................................37
Hot Switch Delay ....................................................................................................37
Trouble Slide ...........................................................................................................38
Trouble File ............................................................................................................38
Freeze Mode ...........................................................................................................38
Field Select .............................................................................................................39
Strobe Rate .............................................................................................................39
Input Source ...........................................................................................................39
Test Signal Out .......................................................................................................39
TSG .........................................................................................................................40
Output Burst ...........................................................................................................40
SDI Clip ..................................................................................................................40
EDH Detection .......................................................................................................41
EDH Error Count ...................................................................................................41
Clamp Speed ...........................................................................................................41
Aux Output ..............................................................................................................41
Aux Sync/Comp ......................................................................................................42
Aux Sync Level .......................................................................................................42
CAV-Y Composite ...................................................................................................42
Analog Width ..........................................................................................................42
Chroma Pairing Filter [DPS-575 Only] ................................................................43
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Table of Contents
Chapter 6: Menus: Audio Setup ..................................................................45
Channel 1 Only, Channel 2 Only, Both Channels .......................................................45
Input ........................................................................................................................45
Analog Bypass ........................................................................................................45
AES/EBU ...............................................................................................................46
Gain-R ....................................................................................................................46
Gain-L .....................................................................................................................46
DDPlex Gain-R ......................................................................................................46
DDPlex Gain-L .......................................................................................................47
Fixed Delay ............................................................................................................47
In Op. Level-R ........................................................................................................47
In Op. Level-L ........................................................................................................47
Headroom-R ...........................................................................................................48
Headroom-L ............................................................................................................48
Out Op. Level-R .....................................................................................................48
Out Op. Level-L ......................................................................................................48
Tone Level ...............................................................................................................48
Test Freq-L .............................................................................................................49
Test Freq-R .............................................................................................................49
Balanced .................................................................................................................49
Termination .............................................................................................................49
Stereo Mode ............................................................................................................49
Phase Invert L ........................................................................................................50
SDI In .....................................................................................................................50
Aud Follows Vid .....................................................................................................50
AFV-Composite, AFV-SVideo, AFV-CAV,
AFV-SDI, AFV-DV, AFV-Option ............................................................................51
Global Audio Config ....................................................................................................51
Auto Track ..............................................................................................................51
Master Mute ...........................................................................................................52
Audio Bypass ..........................................................................................................52
AES Data Grade .....................................................................................................52
AES Elec. Levels .....................................................................................................52
AES Source .............................................................................................................52
96kHz AES Output ..................................................................................................53
Digiduplex Input .....................................................................................................53
DDPlex AES/EBU Out ...........................................................................................53
SDI Out ...................................................................................................................54
Channel In->Out ....................................................................................................54
Sample Rate ............................................................................................................54
SDI Embedding ......................................................................................................55
SDI L/R De-Embed .................................................................................................55
Pitch Change ..........................................................................................................55
Mute In Freeze ........................................................................................................55
Dolby-E (Data) Mode ............................................................................................56
Voice-Over Pgm. Level ...........................................................................................56
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DPS-475/575 Service Manual
Voice-Over Fade .....................................................................................................56
Voice-Over ..............................................................................................................57
Chapter 7: Menus: Keyer Setup ..................................................................59
Fade Out .................................................................................................................59
Cut Out ...................................................................................................................59
Fade In ...................................................................................................................59
File ..........................................................................................................................59
Settings ...................................................................................................................60
Change Settings ..........................................................................................................60
Shift X .....................................................................................................................60
Shift Y .....................................................................................................................60
Fade In Time ..........................................................................................................60
Max Opacity ...........................................................................................................61
Fade Out Time ........................................................................................................61
Repeat Count ..........................................................................................................61
Frame Rate .............................................................................................................61
Loop Mode ..............................................................................................................61
Bumper Style ...........................................................................................................62
Save These Settings ................................................................................................62
Chapter 8: Menus: Noise Reduction .............................................................63
Noise Reduction ......................................................................................................63
Split Screen .............................................................................................................63
Spatial Filter ..........................................................................................................63
Spatial Filter Mix ...................................................................................................64
Horizontal Bandwidth ............................................................................................64
Vertical Bandwidth-Y ..............................................................................................64
Vertical Bandwidth-C .............................................................................................65
Temporal NR-Luma ................................................................................................65
Temporal NR-Chroma ............................................................................................65
Chapter 9: Menus: DV Control .....................................................................67
Chapter 10: Menus: Timing Setup ...............................................................69
Genlock ...................................................................................................................69
Subcarrier Phase ....................................................................................................69
Horizontal ...............................................................................................................69
Chapter 11: Menus: TSG/Image Grabbing ................................................71
Grab 10-bit Video ...................................................................................................71
Grab 8-bit Video .....................................................................................................71
Grab Linear Key ....................................................................................................71
Grab & Apply Luma Key .......................................................................................72
Luma Key Gain ......................................................................................................72
Threshold ................................................................................................................72
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Table of Contents
Chapter 12: Menus: System Config .............................................................73
Line Standard (525/625) [DPS-575 Only] ...................................................................73
Current ...................................................................................................................73
Switch to 525 ..........................................................................................................73
Switch to 625 ..........................................................................................................73
Disable Autoswitch / Switch to Auto ......................................................................73
Misc. Setup ...................................................................................................................73
Internal Temp .........................................................................................................73
Video Delay ............................................................................................................74
Keylock ...................................................................................................................74
Function Bypass .....................................................................................................74
GPI-1 Function ......................................................................................................74
GPI-2 Function ......................................................................................................75
GPO Function ........................................................................................................76
Genlock Changes ....................................................................................................76
VFD Brightness ......................................................................................................76
LED Brightness ......................................................................................................77
Idle Timeout ............................................................................................................77
Idle Cycle Time .......................................................................................................77
One-Time Video Setup .................................................................................................77
Source ID ................................................................................................................77
Setup level (in) ........................................................................................................77
Setup level (out) ......................................................................................................77
Chroma Coring .......................................................................................................78
VITS/Blanking Fld1 ................................................................................................78
VITS/Blanking Fld2 ................................................................................................78
Remote Control Setup ..................................................................................................79
Baud Rate ...............................................................................................................79
Remote Control .......................................................................................................79
RS-422 Termination ................................................................................................79
Unit Address (serial) ..............................................................................................80
IP Address ...............................................................................................................80
Netmask ..................................................................................................................80
Gateway ..................................................................................................................80
Machine Name ........................................................................................................81
DCN Address ..........................................................................................................81
Remote Watch .........................................................................................................81
Ethernet Address ....................................................................................................81
Flash Memory Mgmt ...................................................................................................82
List Files .................................................................................................................82
Memory Usage .......................................................................................................82
Backup All Settings .................................................................................................82
Restore All Settings ................................................................................................82
Version Information ................................................................................................83
Warm Reset .............................................................................................................83
Reset to Factory Defaults .......................................................................................83
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DPS-475/575 Service Manual
Enable Extra Options .............................................................................................83
Factory Calibration ................................................................................................83
Chapter 13: Theory of Operations ................................................................85
Audio Synchronizer Module ........................................................................................88
Block Diagram .......................................................................................................88
Connectors and Signals ..........................................................................................91
Implementation .......................................................................................................95
Calibration .............................................................................................................99
Chapter 14: Test/Alignment Procedures - Video ........................................101
Test Equipment Required .............................................................................................101
General Procedures ......................................................................................................102
Check Supply Voltages ...........................................................................................102
Firmware Upload ...................................................................................................102
DCN Port Check ....................................................................................................102
Ethernet Port Check ...............................................................................................103
GPI Check ............................................................................................................... 103
RS-422 Port Check .................................................................................................103
Adjustment Potentiometer Locations .....................................................................103
Calibration: NTSC .......................................................................................................105
Component Output Level ........................................................................................105
Composite Output Level .........................................................................................105
RGB Output Level ..................................................................................................105
SDI Output Check ..................................................................................................105
DigiDuplex .............................................................................................................106
Composite Input Level ............................................................................................106
Component Input Level ..........................................................................................106
S-Video Input Level ...............................................................................................106
SDI Input Check .....................................................................................................107
Timing and General ................................................................................................107
DV Module Check ..................................................................................................107
Calibration: PAL ...........................................................................................................107
Component Output Level ........................................................................................107
Composite Output Level .........................................................................................108
RGB Output Level ..................................................................................................108
SDI Output Check ..................................................................................................108
DigiDuplex .............................................................................................................108
Composite Input Level ............................................................................................109
Component Input Level ..........................................................................................109
S-Video Input Level ...............................................................................................109
SDI Input Check .....................................................................................................109
Timing and General ................................................................................................110
DV Module Check ..................................................................................................110
Chapter 15: Test/Alignment Procedures - Audio ........................................111
Test Equipment Required .............................................................................................111
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Table of Contents
Basic Parameters ..........................................................................................................112
DPS-475 Test Bench Unit .......................................................................................112
DPS-470 De-Tuned Reference ................................................................................113
Audio Precision ......................................................................................................113
Visual Inspection and Power-Up Test ..........................................................................113
Visual Inspection ....................................................................................................113
Installation of the card ...........................................................................................113
Apply Initial Power ................................................................................................113
Initialising the Audio Sub-system ................................................................................114
Programming the CPLD ........................................................................................114
Verifying the FPGA ................................................................................................114
The Analogue Audio Interface .....................................................................................114
Bypass Relays .........................................................................................................114
Input Termination Relays .......................................................................................115
Output Driver Calibration .....................................................................................115
Input Receiver Calibration .....................................................................................115
Specifications ..........................................................................................................115
Remaining Audio Channels ....................................................................................116
The Digital Audio Interfaces ........................................................................................116
Bypass Relays .........................................................................................................117
AES/EBU output modes ..........................................................................................117
SDI Embedding and DigiDuplex ............................................................................117
Auto-Track ..............................................................................................................117
Chapter 16: Schematics...................................................................................119
DPS-475/575 Main Board.............................................................................................119
DPS-475/575 Front Panel .............................................................................................140
DPS-475/575 Rear Connector.......................................................................................141
DPS-475/575 Audio Synchronizer Module ..................................................................142
DPS-475/575 Animated Logo Option...........................................................................145
Chapter 17: Bill of Materials .........................................................................147
804-575: DPS-475/575 Unit Overview .......................................................................147
804-575AV: DPS-475/575AV Unit Overview .............................................................149
843-570: Main Board Assembly .................................................................................151
843-571: Front Panel Assembly ..................................................................................175
843-572: Rear Panel Assembly ...................................................................................177
843-573: Audio Synchronizer Module ........................................................................178
843-574: Animated Logo Option Assembly ...............................................................188
843-575: Shaft Encoder Assembly .............................................................................188
Appendix A: Specifications ............................................................................189
Video Specifications ....................................................................................................189
Audio Specifications ....................................................................................................190
General Specifications .................................................................................................191
Appendix B: Test Signals ................................................................................193
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DPS-475/575 Service Manual
Appendix C: Installation of Hardware Options ..........................................195
Precautions ...................................................................................................................195
Starting the Installation ................................................................................................196
Installation of DV I/O Option Board ...........................................................................196
Installation of Audio Synchronizer Module ................................................................197
Removal of Audio Synchronizer Module ....................................................................199
Installation of Animated Logo Option Board ..............................................................199
Completing the Installation ..........................................................................................200
Appendix D: The Uploader Software ...........................................................201
Software Installation ....................................................................................................201
Starting the Software ....................................................................................................201
Using the Software .......................................................................................................201
Uploading Files ......................................................................................................203
Converting Files .....................................................................................................203
Field Ordering in Stills and Animations ......................................................................206
Maximum Animation Sequence Length and Frame Size ............................................207
Appendix E: DigiDuplex Mode .....................................................................209
What Is DigiDuplex? ...................................................................................................209
Controlling the DigiDuplex Signal Path ......................................................................209
Video .......................................................................................................................210
Audio ......................................................................................................................211
Configuration Example ................................................................................................212
Appendix F: Ethernet Control ......................................................................215
Configuring Ethernet Control ......................................................................................215
Web Browser Control ...................................................................................................215
Device Control .......................................................................................................216
Confidence Monitoring ..........................................................................................217
Flash File System ...................................................................................................217
Upload File to Unit ................................................................................................217
Other Machines on this Network ...........................................................................218
Appendix G: Remote Control Protocol ........................................................219
Appendix H: Cable Pinouts ...........................................................................221
Video Cable ............................................................................................................221
Audio Cable (Standard) ..........................................................................................222
Audio Cable (Optional) ..........................................................................................223
Appendix I: Important Addresses and Phone Numbers ............................225
Internet .........................................................................................................................225
Canada .........................................................................................................................225
USA & Latin America ..................................................................................................225
Europe ..........................................................................................................................225
Asia and the Pacific Rim ............................................................................................226
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Table of Contents
Appendix J: A Brief History of DPS .............................................................227
Appendix K: Warranty .................................................................................231
Warranty Statement ......................................................................................................231
Warranty Limitations ...................................................................................................231
Warranty Service ..........................................................................................................231
Appendix L: Compliance ..............................................................................233
FCC Compliance Statement .........................................................................................233
Canadian Compliance Statement .................................................................................233
EEC Declaration of Conformity ..................................................................................233
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DPS-475/575 Service Manual
1
Introduction
INTRODUCTION
The Digital Processing Systems DPS-475™ and DPS-575™ Multi-Function
Analog/Digital AV Synchronizers are equally suited for analog, digital or hybrid
facilities, and represent the ideal choice for broadcasters making the transition to
digital television (DTV). Available in video-only and audio/video configurations,
these synchronizers provide an ideal bridge from analog video signals, such as
satellite and microwave feeds, to digital production facilities. The DPS-475 is an
NTSC-only model while the DPS-575 is an auto-sensing dual-standard (PAL/NTSC)
device.
The DPS-475 and DPS-575 offer unparalleled I/O flexibility. Four input and five
output formats are provided standard:
Serial Component Digital Video (SDI) input and output
Component Analog Video (Betacam) input and output
S-Video (S-VHS / Hi8) input and output
Composite Video input and output
RGB-S output
DV (IEEE-1394) I/O with transport control is available as an option. A built-in autosense TBC circuit provides seamless mode switching between direct color and
heterodyne sources such as camcorders and VTRs.
The versatile DPS 12-bit comb filter offers three processing modes: Simple,
Adaptive-2D and Adaptive-3D. 3D combing utilizes a proprietary DPS algorithm to
combine information from previous frames to eliminate residual subcarrier artifacts,
such as cross luminance and cross chrominance. 3D combing can also be applied to
non-composite sources, to clean up component video that was previously decoded
from a composite source using lower-quality combing in other equipment. Combining
the high-quality comb filter with DPS’ proprietary advanced 12-bit analog encoding
provides maximum signal transparency and optimum transcoding.
The DPS-475 and DPS-575 also feature adjustable temporal and spatial digital noise
reduction, as well as variable 2D filtering with separate horizontal and vertical
bandwidth controls. Applying digital bandwidth filtering and noise reduction prior to
MPEG encoding can improve overall MPEG performance through entropy reduction.
DPS' exclusive DigiDuplex mode provides bi-directional connectivity between analog
tape machines and digital audio/video routing systems. DigiDuplex saves space and
money by enabling digital to analog transcoding with simultaneous analog to digital
frame synchronization - all in one compact box. In DigiDuplex mode, the unit's SDI
video input is routed directly to the analog video outputs, which feed the inputs of an
analog device. The analog output of the device can be simultaneously connected to
the synchronizer's analog inputs, where it is processed and sent to the SDI video
outputs. Conversion between digital and analog audio is handled in a similar fashion.
With the addition of the four-channel audio synchronizer module, the DPS-475 and
DPS-575 can provide dual stereo audio and video synchronization in a single rackunit-high package. The internal audio synchronizer option supports analog, AES/EBU
digital, and embedded SDI and DV audio I/O (with the DV I/O Module installed). All
audio outputs are simultaneously active, which enables both analog and digital audio
devices to be connected at the same time. All four audio channels can dynamically
track the internal delay of the video synchronizer, and a fixed delay can also be
specified, ensuring proper lip sync regardless of the program source. Audio test tones
can be generated at operator-specified frequencies.
The DPS-475 and DPS-575 are more than just synchronizers. In addition to the
features listed above, other functions include: Time Base Corrector, Audio
Synchronizer, Digital Framestore with Linear Keyer, Digital Noise Reduction, DV
Transcoder (optional), Video AGC, 10-bit Video Test Signal Generator with Zone
Plate, Audio Test Signal Generator, VITS Inserter, Video Bandwidth Processor, Serial
Digital Audio Embedder/De-Embedder and Animated Logo Inserter (optional). These
functions can be accessed from the front panel, or from an optional DPS RC-475™ or
RC-4000™ remote control.
The DPS-475 and DPS-575 represent ideal choices for broadcasters transitioning to
DTV. When interfacing analog audio and video sources to serial digital equipment,
nothing offers their flexibility, performance, reliability or economy.
This manual provides operating instructions for both the DPS-475 (NTSC) and DPS575 (auto-switching NTSC/PAL). Differences between these two units are noted
where applicable.
DPS-475/575 Service Manual
2
CHAPTER 1: INSTALLATION AND
C
ONFIGURATION
Installation
Unpacking and Inspection
This unit has been thoroughly calibrated and inspected, both electronically and
mechanically, to ensure that it meets the published specifications. The following items
are included with each unit:
Description Quantity
DPS-475 or DPS-575 Multi-Function AV Synchronizer 1
Operations Manual 1
AC Power Cord (Part # 773-254 or 773-505) 1
Rear Support Bracket (Part # 741-983) 1
Video Breakout Cable (Part # 774-753) 1
Audio Breakout Cable (Part # 774-755) 1
(included only with the DPS-475AV and DPS-575AV)
2 x Analog Audio Terminal Blocks (Part # 722-184) 1
(included only with the DPS-475AV and DPS-575AV)
(these may be pre-installed on your unit)
Mounting
The size of the DPS-475 and DPS-575 allows them to fit into most standard consoles
or 19-inch racks. If the unit is to be mounted in a rack, then the included rear support
bracket must be used. Care must be taken to select a dry, well-ventilated location with
a minimum of dust and vibration. Also, leave sufficient clearance from the unit’s sides
to allow for proper air circulation.
After unpacking the unit and before installing it in a console or rack, allow at least 30
minutes for temperatures to equalize and to eliminate any condensation that may have
developed.
Hardware Options
If you purchased hardware options such as the Audio Synchronizer Module, the
Animated Logo Option, or the DV I/O module separately from the main unit, you
will need to install them. Please see Appendix C for detailed instructions for installing
your options safely and correctly.
3
Chapter 1:
Installation and Configuration
DPS-475/575 Service Manual
4
Chapter 2:
Connections
CHAPTER 2: CONNECTIONS
This chapter describes the connections on the DPS-475 and DPS-575 used to
interface the unit with other video and audio equipment in your system.
DPS-475AV/575AV: Back Panel
Breakout Cables
Some connections to the DPS-475/575 are provided on the supplied breakout cables.
These breakout cables must be connected to the following ports on the back of the
unit.
Multi-I/O Breakout Cable
This breakout cable, part number 774-753, connects to the DB-15F high-density
connector labeled Multi I/O on the right side of the rear of the unit. This cable
provides connections for RGB output, sync/key/auxiliary-composite output, S-Video
output, and GPI.
AES/EBU Audio Breakout Cable [on audio-equipped units only]
This breakout cable connects to the DB-25F connector labeled AES/EBU on the rear
of the unit. This cable provides connections for AES/EBU audio input and output.
The standard AES/EBU Audio Breakout cable (part number 774-755) provides BNC
connections; an optional Audio Breakout cable, part number 774-470, provides BNC
and XLR connections.
Video Connections
The following are the video connections on the rear of the DPS-475/575, in left-toright order, followed by those on the supplied breakout cable.
DV Input/Output
This 6-pin IEEE-1394 connector, labeled DV I/O, is used to connect DV (often
referred to as “Firewire”) devices. In addition to carrying DV video and audio input
and output, this port also provides DV device control, allowing control of the DV
device directly from the DPS-475/575. This connection is active only if the optional
DV I/O Module is installed.
5
L L L R R R L L L R R R
+ - G + - G+ - G + - G
In
Out
In Out
L L L R R R L L L R R R
+ - G + - G + - G + - G
Genlock
Loop
S-Video Input
The 4-pin connector on the rear of the unit, labeled S-Video, is used for S-Video
(Y/C) signals, such as from an S-VHS or Hi8 device. It is normally connected to the
S-Video output of a playback VTR using a standard 4-pin to 4-pin S-Video cable.
Some JVC ‘industrial’ type S-VHS players use a 7-pin connector for their S-Video
output. To interface with such machines, a 7-pin to 4-pin adapter cable is required
from the manufacturer of the VTR.
Component Analog V ideo Input
These three BNC connectors, labeled CAV-Y In, R-Y In, and B-Y In, are used to input
the signals from analog component devices, such as Betacam® VTRs.
If component analog video input is not needed, the CAV-Y In connection can be
reassigned as a second composite video input with the CAV-Y Composite option in the
Video Setup menu (see Chapter 5, “Menus: Video Setup”).
Composite Video Input
This BNC connector, labeled Composite In, is used to feed composite
1 Vp-p 75Ω video to the DPS-475/575. In Synchronizer mode, the input video signal
must be direct color or monochrome (such as from a satellite feed or live camera); in
Timebase Corrector or auto switching mode, the input signal can be connected to the
video output of a heterodyne source such as a camcorder or VTR.
Serial Digital Input
This BNC connector, labeled SDI In, accepts serial digital ITU-R BT.601 video and
embedded audio data at a rate of 270 megabits per second.
Serial Digital Reclocked Output
This BNC connector, labeled SDI Reclocked, provides a digitally-regenerated copy of
the SDI Input, with no processing applied.
Serial Digital Outputs
These BNC connectors, labeled SDI Out and SDI Out-2, provide the processed and
synchronized serial digital ITU-R-BT.601 video and embedded audio, 270 megabitsper-second output.
Composite Video Output
These BNC connectors, labeled Composite Out and Composite Out-2, provide
processed, synchronized/timebase-corrected versions of any of the input signals. If the
unit is set to Bypass mode, the Composite Input is bypassed directly to the Composite
Out output (the left-most of the two connectors), providing an unprocessed signal.
Composite Out-2 operates as normal (providing processed output from the selected
video input). The Composite Input is automatically bypassed to the Composite Out
output when the unit is off.
Component Analog V ideo Output
These three BNC connectors, labeled CAV-Y Out, R-Y Out, and B-Y Out, provide
processed, synchronized/timebase-corrected analog component video output.
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DPS-475/575 Service Manual
Chapter 2:
Connections
Genlock Reference
These BNC connectors, labeled Genlock In and Genlock Loop, are used to loop a
genlock signal through the unit to establish the timing for its video output signal. The
signal for this input must always be stable, such as the output from a black-burst or
color-bar generator. Do not attempt to use a signal that has not been timebasecorrected. When a valid signal is connected to the Genlock In input, the video output
of the DPS-475/575 will be genlocked to this signal, and the Genlock LED will be on.
When no external reference is supplied to the genlock input, the unit will operate
using its own internal sync generator. If the Genlock Loop is unused, terminate it with
a 75Ω terminator.
S-Video Output
(on breakout cable)
This 4-pin connector on the Multi-I/O breakout cable provides processed,
synchronized/timebase-corrected S-Video (Y/C) output.
RGB(S) Video Output
(on breakout cable)
These four BNC connectors on the Multi-I/O breakout cable, comprising auxiliary
Red, Green, Blue, and Sync, provide processed, synchronized/
timebase-corrected RGB(S) [RGB with auxiliary sync] video output. If RGB without
auxiliary sync is sufficient, the Aux. Sync connection can be reassigned as an auxiliary
Composite output. If RGB(S) output is not required, these outputs can be
reconfigured to provide a key channel output.
Auxiliary Composite Output (on breakout cable)
The Aux. Sync connection on the Multi-I/O breakout cable, normally used for sync in
RGB(S) [RGB with auxiliary sync] video output, can be reassigned to provide an
auxiliary Composite video output with the Aux Sync/Comp option in the Video Setup
menu.
Key Output (on breakout cable)
The Aux. Sync connection on the Multi-I/O breakout cable, normally used for sync in
RGB(S) [RGB with auxiliary sync] video output, can be reassigned to provide a key
channel output with the Aux Output option in the Video Setup menu.
Audio Connections
The DPS-475AV and DPS-575AV can process 2 stereo pairs of analog, AES/EBU,
Serial Digital (SDI) or DV audio (with the optional DV I/O Module). The audio
inputs can be selected from the front panel or Audio Setup menu, and the operator can
specify which of the stereo channels are to be processed. All of the outputs are active
simultaneously.
Analog Audio Inputs and Outputs
(Terminal Strips)
Two stereo pairs of analog audio input and output are supported, designated Channel
1 and Channel 2 on the rear of the unit. Each is comprised of a left and right
component. Each analog audio input channel can be configured as 600Ω or highimpedance. Each channel can be configured as balanced or unbalanced.
Two terminal strips (one for channel 1, one for channel 2) provide analog audio
connections. Each terminal strip uses the following pinouts:
7
AES/EBU Inputs
(on Audio breakout cable)
Two BNC connectors (one for each of Channel 1 and 2) are provided on the standard
Audio breakout cable (part number 774-755) for AES/EBU input.
An optional Audio breakout cable, part number 774-470, provides four connectors for
AES/EBU input: two XLR (one for each of Channel 1 and 2), and two BNC (one for
each of Channel 1 and 2). The XLR connectors are used for AES/EBU balanced
audio input, while the BNC connectors are used for unbalanced AES/EBU input. Note
that only two of the above input connections can be used at a time (one for Channel
1, and one for Channel 2), and they must be of the same type (XLR or BNC). The
AES Source menu option selects between the XLR and BNC connections.
AES/EBU Outputs
(on Audio breakout cable)
Two BNC connectors (one for each of Channel 1 and 2) are provided on the standard
Audio breakout cable (part number 774-755) for AES/EBU output.
An optional Audio breakout cable, part number 774-470, provides four connectors for
AES/EBU output: two XLR (one for each of Channel 1 and 2), and two BNC (one
for each of Channel 1 and 2). The XLR connectors are used for AES/EBU balanced
audio output, while the BNC connectors are used for unbalanced AES/EBU output.
Both BNC and XLR output is available concurrently.
Audio Delay Pulse/GPI Output (on Multi-I/O breakout cable)
The general-purpose GPI output, a BNC connection on the Multi-I/O breakout cable,
can be configured for use as an audio delay pulse output, to be sent to an external
audio delay box or synchronizer.
Serial Digital Embedded Audio Input (SDI)
The unit accepts four channels of embedded audio on the SDI input port. The four
channels can be selected from any group on the SDI input.
Serial Digital Embedded Audio Output (SDI)
Any of the selected audio inputs can be embedded into the output of the SDI stream.
The operator can select which group of four audio channels (of the 16 available in the
SDI format) the output will be embedded into.
Remote Control Ports
In addition to GPI input (for remote triggering of functions such as Freeze) and output
(for triggering external devices), all functions of the DPS-475 and DPS-575 can be
remotely controlled by devices capable of either RS-232 or RS-422. Two additional
remote control methods are supported: DPS Coaxial Network (DCN), for use with
controllers such as the DPS RC-4000 and RC-475 Remote Control Systems, and
10BaseT Ethernet networking for control through a TCP/IP-based network. The type
of control, and any appropriate parameters, are selected in the System Config menu,
under the Remote Control sub-menu (see Chapter 12, “Menus: System Config”).
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DPS-475/575 Service Manual
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Chapter 2:
Connections
RS-232 and RS-422
This DB-9F connector, labeled RS-232/422 on the rear panel of the unit, is used to
remotely control the DPS-475/575 via either RS-232 or RS-422. When this port is in
use, a Unit Address must be set to an appropriate value in the range of 1-127 (see
Chapter 12, “Menus: System Config”). This allows the unit to be used in a multi-drop
configuration where only the unit addressed will respond to remote commands. The
RS-232 port is also used for transferring files to the unit from a Microsoft Windowsbased workstation via custom software (included). See Appendix D for information
on transferring files from a Microsoft Windows system.
Ethernet Port
The 10BaseT Ethernet connector, labeled Ethernet on the rear of the unit, is used to
connect the DPS-475/575 to a TCP/IP-based network for remote control and status
monitoring. Control of the unit is then handled through web-browsing software or an
RC-475 remote control panel. See Appendix F for details of controlling the unit from
your web browser. Ethernet can also be used to control additional DPS-475/575 units
from the front panel of this unit. When using Ethernet, the IP Address, Netmask, and
Gateway settings of the unit must be configured for your network; your network
administrator can provide you with these settings. These settings are located in the
System Config menu, under the Remote Control sub-menu (see Chapter 12, “Menus:
System Config”).
DCN Port
The BNC connector labeled DCN on the rear of the unit is used to provide a DCN
(DPS Coaxial Network) interface for remote control and status monitoring. DCN is a
proprietary network in which 75Ω coax is used as a multi-drop, bi-directional
network. Using a BNC T-connector on the DPS-475/575, loop coax between each
unit and the remote controller (such as the RC-4000 and RC-475). At each end of the
chain, install a 75Ω terminator. Every DPS-475/575 is assigned a unique DCN
address at the factory, so there is no software configuration required. Maximum cable
length (total) in a DCN configuration should be limited to 2000 feet. DCN can also be
used to control additional DPS-475/575 units from the front panel of this unit.
Use with RC-4000 and RC-475
DCN is used to control the unit from an RC-4000 remote control panel. The Search
for devices menu option on the RC-4000 can be used to find all DPS devices attached
to it’s DCN port and configure itself to control them. This may be done for any
number of units at one time. DCN also allows multiple
RC-4000s to control a single DPS-475/575.
It is possible to remotely disable and enable the front panel of the DPS-475/575 from
the RC-4000 using the “KeyLock” option. If this option is not activated, then it is
possible for a local user to modify the remote-user’s settings from the front panel.
However, the RC-4000 will periodically poll the device and show the new parameters
if the local user changes them. If remote control is the usual case, then it is probably
best to disable front-panel access once the device has been installed.
The RC-475 remote control provides an Ethernet port, which permits it to be
conveniently connected to a TCP/IP network. For instructions on using the DPS RC475 remote control, please see the RC-475 manual.
For use with the DPS-475/575, the RC-4000 must have firmware version 1.3c or
higher. Note that not all functions of the DPS-475/575 will be accessible through the
RC-4000 remote control.
9
GPI Inputs (on Multi-I/O breakout cable)
Two RCA-jack GPI inputs are provided on the Multi-I/O breakout cable. These allow
a GPI-based external controller to trigger functions of the unit such as Freeze. The
function triggered by each GPI input is configured in the System Config menu, under
the Misc. Setup sub-menu (see Chapter 12, “Menus: System Config”).
GPI Output (on Multi-I/O breakout cable)
A user-configurable general-purpose BNC output is provided on the Multi-I/O
breakout cable This output can be used for feeding an audio delay pulse to an
external audio synchronizer, or can be configured as a GPI output to trigger external
devices. The functionality of this output is configured with the GPO Output option in
the System Config menu (see Chapter 12, “Menus: System Config”).
10
DPS-475/575 Service Manual
CHAPTER 3: OPERATION - FRONT PANEL
C
ONTROLS
DPS-575: Front Panel
The front panel controls of the DPS-475/575 are organized into seven main functional
areas:
1. Menu Controls
2. Status Indicators
3. Video Input Selection
4. Audio Input Selection
5. Freeze Controls
6. Mode Selection
7. Proc Amp Controls and User Keys
DPS-475/575: Front Panel Control Area
In addition, while in DV Control mode (selected from the Main Menu), the control
knob and specific keys become dedicated to device control of a DV deck or
camcorder (see the “DV Control Mode” section of this chapter).
Certain keys on the front panel can be user-programmed to specific functions (see the
“User-Programmable Keys” section of this chapter), and some keys activate special
functions when they are held down during power-up of the unit (see the “Power-Up
Keys” section of this chapter).
JOG/SHUTTL
DV
JOG/SHUTTLECOARSE/FINE
S-Video
User 2
Enter Default
Exit
Remote
Video In
Audio In
Frz Mode Bypass
Take Keyer
TSG Luma Black Chroma Hue
Memory Option User 1
Comp
CAV
SDI
OptionOption
Genlock
EDH
TBC
Autotrack
DigiDuplex
1 Analog 2
AES
SDI
DV
Option
AFV
N/R
Chapter 3:
Operation - Front Panel Controls
11
6
7
1
2
5
3
4
Menu options, selections, and feedback are shown on the Vacuum Fluorescent
Display (VFD) display panel. When the unit is first powered-up, the display will first
show the DPS logo and product information, which will then be replaced by the Idle
Screen:
The Idle Screen is a real-time status screen which provides feedback about various
parameters of the currently selected inputs. The Idle Screen is shown when the user is
not adjusting parameters or browsing the menus.
The first three lines of the Idle Screen provide real-time feedback of the Luma, Black,
and Chroma levels of the currently selected video input source.
On DPS-475AV and DPS-575AV units , and DPS-475 and DPS-575 units that have
the Audio Synchronizer Module installed, the next two lines of the display show realtime feedback of the channel 1 and 2 audio input levels.
On units with the DV I/O Module installed, the bottom line of the Idle Screen
displays the current DV Time Code reported by the connected DV device, and just to
the left of this, the current DV transport state.
The Machine Name specifed in the System Config menu (see Chapter 12) is also
shown on the Idle Screen. On units without DV or audio capability, the Idle Screen
will display the current measured video delay through the unit.
Note that at regular intervals, the display will “invert” itself. In the initial state,
text and information appears lit, over an “unlit” background. In the inverted
state, the background will be lit, with the text and information appearing “unlit”
(black). THIS PERIODIC INVERSION IS NORMAL; it does not indicate any
kind of problem nor status. The inversion is done to preserve the lifespan of the
display panel (leaving the display in a single state can cause display pixels to
burn out prematurely).
Resetting the Unit
In the Video Input Selection section of the front panel, just to the right of the CAV
and SDI indicators, is a small hole. This hole provides access to the RESET button,
which will reset the DPS-475/575 unit. This is equivalent to power-cycling the unit.
Menu Controls
All options and parameters for the DPS-475/575 are accessed through configuration
menus, which appear on the display panel. Selecting and using any of the menu and
sub-menu options follows the same general procedure. See Chapter 4, “Menu
Overview and Feature Cross-Reference,” for a chart of the menu structure.
Moving Through the Menus
1. With the Idle Screen displayed, press the Enter button. (If the Idle Screen is not
displayed, press Exit repeatedly until it is.) The display panel will show the Main
Menu options.
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DPS-475/575 Service Manual
Chapter 3:
Operation - Front Panel Controls
2. Scroll through the list using the control knob, until the desired sub-menu is
highlighted. Press the Enter button to enter the sub-menu.
3. Use the control knob and Enter button to choose and activate the option you
want. If there are further sub-menus, use the procedure in step 2 to select
between them, and to select the option you wish to change.
Pressing the Exit button while in a menu or sub-menu will return you to the previous
sub-menu, or if you are at the Main Menu, to the Idle Screen.
Changing Parameters
Once you have selected the option you wish to change, use the control knob to set the
new value for the parameter. When setting parameters that have discrete value options
(such as selecting Field, Frame, or Strobe mode), the control knob will cycle through
the valid settings.
For parameters which have a numerical range of values, the display will show both a
numeric and a visual representation of the range, and the control knob can be used to
set the new value.
Note that adjustments affect the output immediately as the knob is turned.
When setting parameters with a numerical range of values, you can switch the control
knob between Fine and Coarse adjustment mode. When you first enter the parameter
adjustment screen, the control knob is in Fine mode. Pressing the Enter button
switches to Coarse adjustment mode, and the Enter button lights up. This allows you
to make large adjustments more quickly. Pressing Enter again returns the control
knob to Fine mode.
For example, when setting a parameter, the control knob may adjust the value in
increments of 0.02 while in Fine Mode, and 0.50 in Coarse mode.
Pressing the Default button will reset the configuration parameter to its default values.
The Default button will be lit whenever the current value of the parameter is
equivalent to the default value, whether you reached this value by pressing the
Default button, or scrolling to it with the control knob.
Press the Exit button to accept your new value, and return to the previous menu or
sub-menu.
Remote Control
By placing the DPS-475/575 in Remote mode, you can control additional DPS475/575 units on the same DCN or Ethernet network from the front panel of this unit.
Pressing the Remote front-panel key will bring up a list of available units that can be
controlled. <local device> will always be an option on this list, representing the unit
you are physically using. Use the control knob to scroll through the list of available
devices and highlight the unit you wish to control, then press the Enter button to
activate it. Selecting <local device> exits Remote mode, resuming normal single-unit
operation.
Once you have selected a remote unit to control, all front-panel features operate as if
you were actually at the front panel of that remote unit. The VFD display, status
indicators and button lights all reflect the status of the remote unit; all buttons and
controls, with the exception of the Remote key, control the remote unit, not the one
you are physically operating. To stop controlling the remote unit, use the Remote key
to select a new unit (or the local device) to control.
The light on the Remote key flashes while the unit is remotely controlling a device.
13
Status Indicators
The status indicator lights provide visual feedback on the current mode and operating
conditions of the unit.
Genlock
This light indicates the current status of the external genlock source. If the unit is
configured to Auto Genlock mode, this indicator will be lit as long as a stable genlock
source is connected to the unit. If no genlock source is present, the unit will
automatically switch to Internal Genlock mode, and this indicator will flash.
If the unit is configured to Internal Genlock mode, it will operate on its own internal
crystal, and this indicator will be unlit.
EDH
This light indicates the current configuration and status of Error Detection Handling
(EDH) in the input Serial Digital video stream. This indicator is unlit when EDH
Detection is turned off in the unit.
This indicator will flash briefly when EDH Detection is enabled and EDH errors have
been detected and not yet cleared by the operator. The actual count of these errors is
reported in the EDH Error Count menu option.
TBC
This light indicates whether or not the composite input signal is being time base
corrected by the unit’s TBC circuitry. If the unit is in Synch mode, the internal TBC is
not active, and this indicator will be off. If the unit is in TBC mode, the unit will time
base correct the input signal (generally for heterodyned signals from sources such as a
VTR), and this indicator will be lit. If the unit is in Auto-Switch mode, the unit will
sense the incoming composite video signal and select between Synch and TBC modes
automatically; in this mode, the indicator will flash when the TBC is active.
Autotrack
This light indicates whether or not the audio Auto Track mode is enabled. When
enabled, this indicator will be lit, and the unit will automatically delay the audio data
to match the delay of the video data through the synchronizer (up to 4 fields). This
indicator will be off when Auto Track is disabled.
DigiDuplex
This light indicates whether or not the unit is in DigiDuplex mode. In DigiDuplex
mode, the indicator is lit, and the unit’s SDI video input is routed to the analog video
outputs, while the selected analog video input is simultaneously synchronized and
sent to the SDI output. With an audio-equipped unit, conversion between digital and
analog audio is handled in similar fashion, simultaneously with the video. This
indicator is unlit when DigiDuplex mode is off. See Appendix E, “DigiDuplex
Mode”, for a detailed explanation of DigiDuplex mode and its settings.
Option
This light indicates the status and/or configuration of the currently installed option
card module (if any). The meaning of this indicator varies depending on the particular
option installed; please see the documentation for your option module for further
details.
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DPS-475/575 Service Manual
Chapter 3:
Operation - Front Panel Controls
Video Input Selection
The current (active) video input format selection is shown by these indicator lights.
The current input is selected by pressing the Video In button until the desired input
LED becomes lit. Selectable inputs are:
• Comp (Composite)
• S-Video
• CAV (Component Analog Video)
• SDI (Serial Digital)
With the optional DV module installed, DV will also be selectable as an input.
If an option card module is installed that includes an additional video input, it will be
selectable as Option.
If no input signal is present on the selected video input, the corresponding indicator
light will flash.
Audio Input Selection
On DPS-475AV and DPS-575AV units, and DPS-475 and DPS-575 units with the
Audio Synchronizer Module installed, the current (active) audio input format
selection is shown for each channel by these indicator lights.
Pressing the Audio In button takes you to a menu for selecting the Channel 1 audio
input; this is the same as the Ch1-Input menu option. Pressing the Audio In button a
second time takes you to a menu for selecting the Channel 2 audio input; this is the
same as the Ch2-Input menu option.
Selectable audio inputs are:
• Analog
• AES/EBU
• SDI Embedded
With the optional DV module installed, DV will also be selectable as an input. If an
option card module is installed that includes an additional audio input, it will also be
selectable.
The selection menus also provide access to two “special” audio modes:
• Mute disables audio output; while in this mode, all input source indicator lights
for that channel will be on.
• Test Tones outputs audio test tones from the unit. The parameters of the test tones
(Level, Frequency) are set from the Audio Setup menu (see Chapter 6, “Menus:
Audio Setup”). While in Test Tones mode, all input source indicator lights for
that channel will flash.
If AFV (Audio-Follows-Video) mode is enabled through the audio menus (see Chapter
6, “Menus: Audio Setup”), the AFV indicator for that channel will be lit. In this mode,
15
each of the selectable video inputs has an audio input selection linked to it. Whenever
the video input selection is changed, the audio input selection for any AFV-enabled
channel automatically changes correspondingly.
• You can override AFV mode by manually selecting a different audio input even
when AFV is enabled. This does not, however, turn AFV mode off; the next time
the video input selection is changed, the audio will again follow it. AFV mode
can only be disabled through the audio menus.
• The AFV link to each of the video inputs is set through the Audio Setup menu
(see Chapter 6, “Menus: Audio Setup”).
The input selection for channels 1 and 2 cannot be selected independently if 96 kHz
AES Output mode (see Chapter 6, “Menus: Audio Setup”) is enabled; they must then
always be set to the same input source.
When Dolby-E (Data) Mode is enabled (see Chapter 6, “Menus: Audio Setup”), the
audio input selection for channel 1 is locked to AES/EBU, and only this channel
supports Dolby-E Data. SDI Embedded Audio cannot be used while in this mode.
Pressing and holding the Audio In button for one second will take you to the Audio
Setup menu (the same as is available through the Main Menu), from which you can
set additional audio configuration options.
When one input channel is being routed to both output channels through the
Channel In->Out or Aud Follows Vid menu options (see Chapter 6, “Menus: Audio
Setup” for details), only that input channel’s LED will be lit to indicate the audio
input source.
On DPS-475 and DPS-575 units without audio capability, the Audio In button is userprogrammable; that is, the user can assign the button to a desired menu function. See
the “User-Programmable Keys” section later in this chapter for instructions on
assigning this button to a menu function.
Freeze Controls
The freeze controls provide instant access to freezing individual frames or fields of
the incoming video source, strobing the incoming video, or performing a 3:2
pulldown on the input source.
Pressing the Frz Mode button takes you to a menu setting for selecting which freeze
mode will be applied to the incoming video. This is the same as the Freeze Mode
menu option under the Video Setup menu.
Pressing the Frz Mode button multiple times will cycle through the different modes,
or the control knob can be used for selection. The available modes are:
• Frame - freezes an entire frame of the incoming video
• Field - freezes a single field of the incoming video
• Strobe - strobes the incoming video
• Film - applies a 3:2 pulldown to the incoming video, effectively giving
a simulated 24fps look to the video output
Pressing the Take button activates the selected freeze mode and applies it to the
incoming video. The light on the Take button will flash while freeze mode is active.
Press Take again to return to the live video feed.
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DPS-475/575 Service Manual
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