signal path

Transcription

signal path

ñ
Information
Model CP500 Cinema Processor
Reference Diagrams
Grounding Details
Installation Wiring
Connector Pin Assignments
System Block Diagram
Card Locations and Signal Flow
Menu Structure
Issue 02
Part No. 91497
S98/11512/12084
Dolby Laboratories Inc.
U.S.A. 100 Potrero Avenue • San Francisco, CA 94103 • Telephone 415-558-0200 • Facsimile 415-863-1373 • Web: www.dolby.com
U.K. Wootton Bassett • Wiltshire SN4 8QJ • England • Telephone +44-(0)1793-842100• Facsimile +44-(0)1793-842101
Dolby and the Double-D symbol are trademarks of Dolby Laboratories
© 1997 Dolby Laboratories Inc.
Proper Grounding of Equipment
(For non-EC countries only)
In the past it was assumed that if the units were mounted in the same rack that they would
be bonded together by way of the rack rails to the mounting ears. The paint used on
professional products has gotten much better in the last few years and this assumption is
generally no longer true. To ensure a good ground connection between units in the rack
and therefore a quiet system with no hum or noise it is highly recommended installing at
least one star washer for every piece of equipment. Insulating nylon or plastic washers
on the rack screws should not be used with the star washer. See figure below:
To optimize the grounding of the system you must add a jumper between signal ground
of the CP500 and the chassis. See figure below:
Connection of ground jumper and amplifier
Most projectors sold in North America come with the new reverse scan LED analog
soundhead readers installed. In addition, many existing projectors are being upgraded to
include this superior method of playing back SVA soundtracks. The output of the solar
cell from this system is at a somewhat lower level than a normal incandescent exciter
lamp solar cell. In order to provide the correct signal level for the cinema processor a
small preamp board is needed and is mounted in the soundhead.
Since this is an active circuit it must have its signal ground connected to the cinema
processor ground for correct operation. Failure to connect the board ground to the
cinema processor can result in a noisy optical system or no sound at all. In some
instances the signal ground from the board has been connected to the ground of the
projector; this method should be avoided as it is not the best way to make this connection
The preferred way is to connect the shield at both ends of the signal path. See figure
below:
Proper connection of Reverse Scan
LED Readers to Cinema Processor
APPENDIX C
BACKPLANE CONNECTORS / REFERENCE DIAGRAMS
CP500 Backplane Connector Pin Assignments
1. Automation Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
18
19
20
25
12
Function
SK1 Format Select Input
SK8 Format Select Input/or
STEP (in Automation Sequential mode)
Mute On/Off Input
Format Status Bit 0
Format Status Bit 1
Format Status Bit 2
Projector Status Output
Signal Ground
2. Serial Data Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
Signal Name
N/C
Transmitted Data
Received Data
Looped back to pin 6
Signal Ground
N/C
3. Motor Start Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
Signal Name
Motor Start Relay, Proj 1
Proj 1 Changeover, pulsed contacts
Changeover relay, closed selects Proj 2
Proj 2 Changeover, pulsed contacts
Ground
N/C
N/C
N/C
Motor Start Relay, Proj 2
C-2
4. Bypass / Remote Connector:
Pin
Number
1
2
3
4
5
6
7
8
Signal Name
Bypass Power Transformer Connection, 16-18 Vac
Bypass Power Transformer Connection, 16-18 Vac
Remote Control Unit V+
Remote Control Unit Data
Remote Control Unit Ground
Remote Auditorium Fader +
Remote Auditorium Fader Ground
N/C
5. Main / LF Output Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Signal Name
Left Channel
Signal Ground
Right Channel
Signal Ground
Center Channel
Signal Ground
Left Surround Channel
Signal Ground
Right Surround Channel
Signal Ground
Sub Woofer Channel
Signal Ground
Hearing Impaired Channel
Signal Ground
Mono Surround Channel
6. Crossover Output Connector (Used With Cat. No. 683 Installed):
Pin
Number
1
2
3
4
5
6
7
8
9
10
Signal Name
Left Channel HF
Signal Ground
Right Channel HF
Signal Ground
Center ChannelHF
Signal Ground
Left Surround Channel LF
Signal Ground
Right Surround Channel LF
Signal Ground
C-3
7. Optical 1 Input Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
Signal Name
Projector 1 Left Channel +
Projector 1 Left Channel Signal Ground
Projector 1 Right Channel +
Projector 1 Right Channel Signal Ground
N/C
N/C
Signal Ground
8. Optical 2 Input Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
Signal Name
Projector 2 Left Channel +
Projector 2 Left Channel Signal Ground
Projector 2 Right Channel +
Projector 2 Right Channel Signal Ground
N/C
N/C
Signal Ground
9. Mic. Input Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
Signal Name
Mic1+
Mic1Mic2 signal
Mic2 ground
N/C
Mic1 ground
Mic Multiplexer V+
Mic Multiplexer Gnd
Mic Multiplexer Data
C-4
10. Accessory Rack Analog Connector:
*
Pin
Number
1
Signal
Name
AccOptByp
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
X15
X14
X13
X12
X11
X10
AccSW
AccC
AccRS
AccLS
AccR
AccL
AccNRS
AccNRC
AccNRRe
AccNRLe
AccNRR
AccNRL
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
+13VDC
+13VDC
-12VDC
-12VDC
Ground
OPTBUSSR
36
37
Ground
OPTBUSSL
Dolby Level is 388 mV.
Signal Description
Mono input to Cat 682 for Bypass
Operation
Direct Input to Cat 682
Ouput to Acc Rack from Cat 662
*
Input to noise reduction resources
*
*
*
*
*
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Power Supply
Power Supply
Power Supply
Power Supply
Signal Ground
Optical Pre Amp Output Right
Channel
Signal Ground
Optical Pre Amp Output Left Channel
C-5
11. Accessory Rack Digital Connector:
Pin
Number
1
18
19
20
21
22
23
Signal
Name
Signal
Ground
OPTLRCK
RETSD2
RETSD1
RETSD0
RETWCK
RETBCK
ACCBAUD
ACCLINK
RET256FS
ACCRXD
ACCTXD
Signal
Ground
OPTBCK
OPTDAT
RETOPTD
AT1
RETOPTD
AT2
!ACCEN
ACCSD2
ACCWCK
ACCBCK
ACCSD1
ACC256FS
24
25
ACCSD0
ACC512FS
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Signal Description
Signal Ground
Left / Right Clock from Optical A/D
Serial Data 2 Return
Word Clock Return
Serial Bit Clock Return
Baud Rate Clock
Accessory Rack Present
256 X Sample Rate Clock Return
Accessory Rack Received Data
Accessory Rack Trasmitted Data
Signal Ground
A/D Bit Clock form Optical A/D
Serial Data from Optical A/D
Spare Data Line 1
Spare Data Line 2
Enable Accessory Rack
Accessory Rack Serial Data 2
Accessory Rack Word Clock
Accessory Rack Bit Clock
Accessory Rack 256 X Sample Rate
Clock
Accessory Rack 512 X Sample Rate
Clock
C-6
12. 6 Channel Input Connector* :
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
*
Signal Name
Signal Ground
EXT3
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
Signal Ground
EXT0
EXT2
Signal Ground
EXT1
Signal Ground
Signal Ground
EXT4
Signal Ground
Signal Ground
Signal Ground
EXT5
Signal Ground
Dolby Level is 300 mV at these set of inputs.
Signal Description
Right Surround Channel External Input
Left Channel External Input
Left Surround Channel External Input
Right Channel External Input
Center Channel External Input
Sub Woofer Channel External Input
C-7
13. Reader 1 and Reader 2 Input Connector:
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Signal Name
N/C
N/C
N/C
TTCO
TCOGND
FTCO
TSCO
SCOGND
FSCO
N/C
N/C
N/C
N/C
VO
VOGND
+15VIDEO
V1
V1GND
-15VIDEO
N/C
N/C
N/C
N/C
N/C
N/C
Signal Description
Row Clock Return
Row Clock Common
Row Clock Send
Pixel Clock Return
Pixel Clock Common
Pixel Clock Send
Differential Video V0
V0 Common
+15VDC
Differential Video V1
V1 Common
-15VDC
THESE MODULES ARE
NECESSARY FOR
BYPASS OPERATION
DOLBY DIGITAL
FILM ERROR RATE
0 = EXCELLENT
8 = ACCEPTABLE
F = FAIL
OPTIONAL
FOR BI-AMP
SYSTEMS
J5
J6
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
675A
675A
670
671
671
673
675A
680
J11
J12
J14
J15
J16
J17
J18
J19
J20
J10
J7
Ls
Sw
H/I
Lt
P1
9
SR
Rt
Rt
P2
PREAMP
CROSSOVER
OUTPUT LEVEL TRIM BYPASS
A
Lt
8
6 CH D/A CONVERTER AND VCAs
Ms
Rs
PRO-LOGIC
DECODER
Lt
Rt
C
7
1
J13
Lt
L
Rt
C
R
Ls
Rs
Sw
6
5
1
2
2
SAMPLE RATE
CONVERTER
J4
CAT.NO.
662
AC3 DECODE
J3
J2
J1
685
READER DELAY / ERROR CHECK
681
VIDEO PROCESSING/DATA EXTRACT
222SR/A
6 CH A/D CONVERTER
R
661
INPUT SWITCH AND 2 CH A/D CONVERTER
L
682
OPTIONAL
CAT.NO. CAT.NO.
CARD
SLOT
NUMBERS
CAT.NO.
VIDEO PREAMP
683
CAT.NO.
CAT.NO. CAT.NO.
EQUALIZATION
CAT.NO.
ANALOG SWITCH
OUTPUT SIGNAL
DIGITAL AUDIO SIGNAL
PRESENT LEDS
L
Ls
C
R
Rs
Sw
4
3
5
POWER / BYPASS
MAIN CP500 RESET BUTTON
2
1
3
DIGITAL SUB-SYSTEM
RESET BUTTON
POWER INDICATORS
CAT.NO.
684
4
+15V
-15V
+5V
J8/J9
SIGNAL PATHS
Dolby Digital
Optical
1
2
3
4
5
Video
Preamp
Video Processing/
Data Extract
Reader Delay
Error Check
AC3
Decode
Sample Rate
Convert
2
3
1
Preamp
Non-Sync
External Digital Processor
6 ch (5.1 Format) optional.
Requires Cat. No. 685 card.
PATH COMMON TO
ALL FORMATS
L t, R t
Input Switch
L t, R t
Noise Reduction
4
5
2 Ch
A/D Convert
Pro-logic
Decode
1
Optional
6 Ch
A/D Convert
Equalization
6 Ch D/A Convert/
VCAs
6
7
Output Level Trim
Bypass
MAIN
OUTPUT
8
Fader Circuit is
on This Card
(LF OUTPUT)
(Crossover)
9
Optional
Cat.No.683
(HF OUTPUT)
CARD LOCATIONS
MODEL CP500-D
THESE MODULES ARE
NECESSARY FOR
BYPASS OPERATION
OPTIONAL
FOR BI-AMP
SYSTEMS
R
661
CAT.NO.
681
J3
J2
J4
J5
J6
CAT.NO.
CAT.NO.
CAT.NO.
662
675A
675A
J11
J12
J10
J7
Lt
Rt
C
Ls
Ms
Rs
Sw
H/I
L
J1
682
Lt
P1
9
SR
Rt
Rt
PREAMP
CROSSOVER
A
Lt
P2
8
CARD
SLOT
NUMBERS
CAT.NO.
222SR/A
CAT.NO. CAT.NO.
J14
J13
7
J15
J16
J17
J18
J19
J20
EQUALIZATION
683
PRO-LOGIC
DECODER
CAT.NO.
ANALOG SWITCH
OUTPUT SIGNAL
Lt
L
Rt
C
R
Ls
Rs
Sw
6
5
POWER / BYPASS
2
1
4
3
POWER INDICATORS
CAT.NO.
684
+15V
-15V
+5V
J8/J9
SIGNAL PATH
Equalization
Optical
1
Preamp
Non-Sync
L t, R t
2
Input Switch
3
L t, R t
Noise Reduction
4
5
2 Ch
A/D Convert
Pro-logic
Decode
6
6 Ch D/A Convert/
VCAs
7
Output Level Trim
Bypass
MAIN
OUTPUT
8
Fader Circuit is
on This Card
(LF OUTPUT)
(Crossover)
9
Optional
Cat.No.683
(HF OUTPUT)
CARD LOCATIONS
MODEL CP500-SR
THESE MODULES PLUG INTO
CAT.NO.669
BACKPLANE ADAPTER BOARD
THESE MODULES ARE
NECESSARY FOR
BYPASS OPERATION
OPTIONAL
FOR BI-AMP
SYSTEMS
681
J5
J6
685
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
662
675A
675A
670
671
671
673
675A
680
J11
J12
J14
J15
J16
J17
J18
J19
J20
J10
J7
Ls
Sw
H/I
Le
Lt
C
9
SR
Rt
Re
Rt
P2
8
S
7
3
Lt
L
Rt
C
R
Ls
Rs
Sw
6
5
1
2
2
PRESENT LEDS
L
Ls
C
R
Rs
Sw
4
3
1
PREAMP
CROSSOVER
A
Lt
A-TYPE NOISE REDUCTION
A-TYPE NOISE REDUCTION
P1
Ms
Rs
PRO-LOGIC
DECODER
Lt
Rt
C
J13
2
1
1
2
5
POWER / BYPASS
2
SAMPLE RATE
CONVERTER
222
AC3 DECODE
222
OPTIONAL
CAT.NO. CAT.NO.
J4
CAT.NO.
J3
J2
J1
222SR/A
CAT.NO.
6 CH A/D CONVERTER
R
661
CAT.NO.
L
682
CAT.NO.
CARD
SLOT
NUMBERS
CAT.NO. CAT.NO.
VIDEO PREAMP
683
ANALOG SWITCH
OUTPUT SIGNAL
EQUALIZATION
CAT.NO.
DOLBY DIGITAL
FILM ERROR RATE
0 = EXCELLENT
8 = ACCEPTABLE
F = FAIL
DIGITAL SUB-SYSTEM
RESET BUTTON
POWER INDICATORS
CAT.NO.
684
4
+15V
-15V
+5V
J8/J9
PATH COMMON TO
ALL FORMATS
SIGNAL PATHS
Dolby Digital
Optical
1
2
3
4
5
Video
Preamp
Video Processing/
Data Extract
Reader Delay
Error Check
AC3
Decode
Sample Rate
Convert
2
3
L t, R t
1
Preamp
Input Switch
L t, R t
Noise Reduction
Non-Sync
4
5
2 Ch
A/D Convert
Pro-logic
Decode
6 Ch D/A Convert/
VCAs
6
7
Output Level Trim
Bypass
MAIN
OUTPUT
8
Fader Circuit is
on This Card
(LF OUTPUT)
(Crossover)
(HF OUTPUT)
9
Optional
Cat.No.683
3
6 ch (5.1 Format)
Equalization
6 Ch A/D Convert
L, R
70mm Mag
Formats 42, 43
1
Input Switch
Le, Re
L, R
L
2
Noise Reduction
1
Le, Re
Noise Reduction
C,S
2
C,S
Noise Reduction
CARD LOCATIONS
MODEL CP500-70
THESE MODULES ARE
NECESSARY FOR
BYPASS OPERATION
THESE MODULES PLUG INTO
CAT.NO.668
BACKPLANE ADAPTER BOARD
OPTIONAL
FOR BI-AMP
SYSTEMS
J6
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
CAT.NO.
675A
675A
670
671
671
673
675A
680
J11
J12
J14
J15
J16
J17
J18
J19
J20
J10
J7
Lt
(L)
P1
9
Rt
P2
PREAMP
CROSSOVER
Lt
8
Sw
H/I
Rt
(R)
6 CH A/D CONVERTER
Ms
Ls
Rs
PRO-LOGIC
DECODER
Lt
Rt
C
7
1
J13
Lt
L
Rt
C
R
Ls
Rs
Sw
6
5
1
2
2
SAMPLE RATE
CONVERTER
J5
CAT.NO.
662
AC3 DECODE
J4
685
J3
OPTIONAL
CAT.NO. CAT.NO.
681
300
NOISE REDUCTION
R
CAT.NO.
300
J2
J1
CAT.NO.
661
NOISE REDUCTION
L
682
CAT.NO.
CARD
SLOT
NUMBERS
CAT.NO. CAT.NO.
VIDEO PREAMP
683
ANALOG SWITCH
OUTPUT SIGNAL
EQUALIZATION
CAT.NO.
DOLBY DIGITAL
FILM ERROR RATE
0 = EXCELLENT
8 = ACCEPTABLE
F = FAIL
PRESENT LEDS
L
Ls
C
R
Rs
Sw
4
3
5
POWER / BYPASS
2
1
DIGITAL SUB-SYSTEM
RESET BUTTON
POWER INDICATORS
CAT.NO.
684
4
+15V
-15V
+5V
J8/J9
SIGNAL PATHS
Dolby Digital
Optical
1
2
3
4
5
Video
Preamp
Video Processing/
Data Extract
Reader Delay
Error Check
AC3
Decode
Sample Rate
Convert
2
3
1
Preamp
Non-Sync
6 ch (5.1 Format) optional.
Requires Cat. No. 685 card.
PATH COMMON TO
ALL FORMATS
L t, R t
Input Switch
L t, R t
Noise Reduction
4
5
2 Ch
A/D Convert
Pro-logic
Decode
1
Optional
6 Ch
A/D Convert
Equalization
6 Ch D/A Convert/
VCAs
6
7
Output Level Trim
Bypass
MAIN
OUTPUT
8
Fader Circuit is
on This Card
(LF OUTPUT)
(Crossover)
9
Optional
Cat.No.683
(HF OUTPUT)
CARD LOCATIONS
MODEL CP500-D/300
FOR STUDIOS
Current
Formats
Menu
Auditorium
Fader Enable
MENU
FORMATS
Soft Keys:
Menu
Selections
Menu
SK 6
Auto Digital
Enable
Proj. 1
SK 7
SK 8
SK 1
Auto Digital
Enable
Proj. 2
SK1
SK 2
TO SHEET 2 (ALIGNMENT)
SK 3
TO SHEET 2 (DIAGNOSTICS)
EXIT
System Setup
Menu
SK5
SK3
SK2
SK8
EXIT
Audio
Adjustments
Menu
CP500
Controls
Menu
SK 1
SK 2
SK 3
SK 4
SK 6
LCD Contrast
Data Transfer
Automation
SK 1
SK 2
Format
Configuration
Menu
Mono Level
Trim
Mono EQ
Adjust
SK 1
Wakeup
Format
SK 2
SK 3
Build Format
Selector
Menu
Auditorium
Fader Enable
SK 1
UART
Selector
SK 2
Build Custom
Format Menu
Page 1
SK 1
Select Format name
SK 8 (MORE)
SK8 (BACK)
About This
CP500
Build Custom
Format Menu
Page 2
Copy From
Existing
Format
SK 1
EXIT
SK 1
SK 1
SK 5
SK 4
Signal Type
SK 5
Bass
Re-direction
SK 6
Signal Output
Channel
SK 7
Signal Level
SK 8
Back
SK 4
Assign
Formats (to
Soft Keys)
Assign Fader
Settings
SK 3
SK 4
SK 3
Projector
Number
NR Source
SK 8
SK 1
NR Channels
L&R
Assign
Projectors
SK 5
NR Type
SK 2
NR Channels
Ls & Rs
B-Chain Input
SK 3
NR Channels
C & SW
SK 4
SK 6
Decoder
Mode
Sub Woofer
LPF Cutoff
Channel Mute
Fader Value
CANCEL
More about
this CP500
OPU Output
Enable
SK 2
SK 2
Bypass
SK 4
SK 8
Optical
Decoder
Configuration
SK 2
SK 3
Equalizer
Configuration
Surround/SW
Source
Sub Woofer
Gain
SK 3
Mute Speed
Adjust
Assign Auto
Digital
Sources
Rotate
Knob
Build Custom
Format
Format Screen
Type
Assign Auto
Digital Targets
SK 7
SK4
Assign Aux
Bits
SK 6
SK 5
SK 6
SK 4
SK 7
Accessory
Rack Enable
SK 8
Back
Save New
Format
SK 4
SK 8
X-Point
(Crosspoints)
Bass
Extension
Back
SYSTEM SETUP
MENU TREE v1.3
(SHEET 1)
TREE1_03.FLO
Current
Formats
Menu
FORMATS
MENU
Menu
Selections
Menu
SK 1
TO SHEET 1
Soft Keys:
(SYSTEM SETUP)
SK 3
EXIT
SK2
PASSWORD
PROTECTED
Diagnostics
Menu
EXIT
Alignment
Menu
SK1
SK 1
B-Chain Noise
Sequence
SK 2
Set Dolby
Level
SK 3
Event Log
SK 4
Dolby
Diagnostics
(for future use)
SK2
B-Chain
Alignment
Menu
Select Channel
L, C, R, Ls, Rs, Sw
Bypass
SK1
Swap Cat. 682
SK 1
Mic Mux
Full /
Split Screen
SK 5
SK 5
Subwoofer
Level
SK 6
Rotate
Knob
SK 6
SK 7
Noise Gating
SK 2
Microphone
Enable
1-4
Flat
SK 8
SK 3
Treble /
Bass
Digital
Surround
Delay
Optical
Surround
Delay
Digital
Soundhead
Delay
Set System
Password
A-Chain
Alignment
Menu
SK 1
Adjust Optics
SK 2
Manual EQ
SK 3
Manual Level
SK 3
SK 5
Swap Cat. 661
SK 5
SK 6
Auto EQ
OPU
SK 7
Auto Level
OPU
Optical SW
Level
Optical SW
Polarity
Left Surround
Output Level
Adjust
SK 8
SK 8
Right
Surround
Output Level
SK 6
SK 6
Scan
(Start scan)
SK 3
SK 5
SK 4
Set
Scan Rate
Reversion
Mode
Right Output
Level
SK 4
Enable /
Disable
Digital SW
Level
Center Output
Level
SK
1-4
SK 3
Center
Channel Noise
Left Output
Level
SK 2
SK5
SK
4
SK4
SK2
SK 1
SK 3
Optical
Surround
Adjust
SK 1
Calibrate SPL
(Set Room
SPL)
Mono Level
Trim
SK 2
SK 5
Rotate
Knob
B-Chain EQ
SK3
Output Adjust
Menu
Adjust Bypass
Mono
Surround
Output Level
Optical SW
Bandwidth
ALIGNMENT AND
DIAGNOSTICS
MENU TREE v1.3
(SHEET 2)
TREE2_03.FLO
SK 7

signal path

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