Dolby Laboratories CP500-300 Specifications Page 89
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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8-11
8.4.5 Early Cat. No. 682 Output HF/LF Balance and Level
Adjustments
(With Cat. No. 683 Electronic Crossover Card)
REMEMBER:
Adjust the trimpot on the Cat. No. 682 Output Card for LF/HF Balance and the adjust the
trimpot on the Cat. No. 683 for Bypass Level.
Thread the projector, and run a loop of
Cat. No. 69P pink noise test film, or the
pink noise side of Cat. No. 69 test film.
System Setup
key
Format
Selection
Menu
key
screen shows:
press:
Menu
Selection
screen shows:
press:
Format 04 Dolby Stereo
FORMATS
Menu Cancel OK
Exit
Select
Format 04
(Dolby Stereo).
Press
MENU
. Then,
System Setup
.
Press
Bypass
(SK8). This connects the
Left, Center, and Right outputs of the
CP500 to the Bypass subsystem output.
CAT. NO. 682
CENTER
BYPASS
Adjust the Bypass trimpot on the
Cat.
No. 682
(be sure not to adjust the Cat.
No. 683 at this time) so that the average
level displayed on the external spectrum
analyzer (you cannot use the CP500’s
internal analyzer for this adjustment)
from 200 to 500 Hz is equal to that from
630 Hz to 3 kHz.
This trimpot adjusts the low frequency
driver level relative to the high
frequency driver. In general, the Bypass
Gain Range jumper on the Cat. No. 682
card should be set to HI and the Cat.
No. 683 card should be set to LO. If you
cannot get the desired result, change the
setting of the appropriate jumper.
SK8
Using the
Bypass
key (SK8), toggle
back and forth between regular and
bypass operation, setting the Bypass
level trimpot on the
Cat. No. 683
so
that the sound pressure level matches
between Bypass and non-Bypass
operation.
SK8
FORMATS
Turn the bypass feature off. Press
FORMATS
to return to the
Format
screen.
- Model CP500 1
- Model CP500 2
- TABLE OF CONTENTS 3
- 1.1 About the Dolby CP500 9
- 1.3 About This Manual 10
- 1.4 Specifications 11
- 1.5 Regulatory Notices 13
- SECTION 2 15
- EQUIPMENT REQUIRED 15
- TEST FILM 16
- 3.1.2 While playing the film: 17
- 3.2 Mount the CP500 18
- 3.3 Connect the CP500 18
- (Models CP500-D, and -70) 19
- Figure 3 - 2 21
- Figure 3 - 3 21
- 3.4 Check and Set Jumpers 22
- 1.9 mSEC 1.9 mSEC 1.9 mSEC 24
- Appendix B, Cat. No. 683 25
- Model CP500-D 26
- Model CP500-D/300 27
- Model CP500-SR 27
- Model CP500-70 27
- 3.6 Bypass Power Wiring 28
- 3.7 Power On 29
- 4.1 The CP500 Front Panel 31
- 4.2 System Password 34
- 4.3 Aligning the B-Chain 35
- Amplifiers 37
- Air-conditioning 38
- B-Chain Alignment 39
- POWER AMPS 40
- “85 dBC” 43
- Cat. No. 682 card 52
- 6.1 Aligning the A-Chain 53
- LAMP VOLTAGE DC ADJUSTMENT 55
- OSCILLOSCOPE TRACES 59
- CAT. NO. 661 60
- P1, Left 61
- P1, Right 62
- Projector 1 64
- 7.1 Mechanical Alignment 65
- 7.3 Focus Adjustment 66
- Figure 7- 2 67
- Figure 7- 3 68
- Figure 7- 4 68
- CCD Circuit Board 68
- Figure 7- 5 69
- 7.8 Film Threading 70
- 7.9 Cat. No. 673 71
- 7.11 Format Control 71
- Allowable Source Formats 74
- Allowable Target Formats 74
- How It Works 74
- Assigning Source Formats 75
- Assigning Target Formats 76
- Figure 7- 8 77
- 7.13.2 Print Cleanliness 78
- 7.13.3 Adjustments 78
- SECTION 8 79
- FINAL ADJUSTMENTS 79
- 8.2.1 Static 81
- 8.2.2 Dynamic 82
- 8.2.3 Typical Settings 82
- Width (feet) 83
- Width (meters) 83
- 8.4 Bypass Adjustments 84
- REMEMBER 86
- Format 04 Dolby Stereo 88
- REMEMBER: 89
- Figure 8-2 90
- Figure 9 - 1 92
- CAT. NO. 689 REMOTE 93
- Selection 94
- 9.2.1 Operation 95
- 9.2.2 Components 97
- 10.1 During the Show 98
- Surround Speakers 100
- Electronic Crossover: 100
- 10.2 Between Shows 101
- WARNING: 103
- 10.3 Troubleshooting Chart 104
- NO SOUND AT ALL 105
- NO SOUND IN SOME 106
- FADER PROBLEMS 107
- CONTROL PROBLEMS 107
- RUMBLES, WHISTLES 108
- HUM etc. IN SOUND 108
- TROUBLE IN ONE OR 109
- MORE CHANNELS 109
- CHANGEOVER AND 112
- CONTROL TROUBLES 112
- APPENDIX A 114
- ADVANCED OPERATIONS 114
- Cancel OK 115
- Equipment Needed 118
- Saving System Settings 119
- Connect to Load500 124
- Menu Cancel OK 129
- B.1 Description and Features 130
- B.2 Installation 130
- B.3 Alignment 131
- B.4 Special Applications 133
- B.5 Headers Available 134
- B.6 Jumpers and Headers 135
- 1. Automation Connector: 137
- 2. Serial Data Connector: 137
- 3. Motor Start Connector: 137
- 9. Mic. Input Connector: 139
- System Setup Menu Tree 143
- Signal Block Diagram 143
- Basic Functions 144
- Auxiliary Data Channel 146
- Optical Sound 148
- Magnetic Sound 149
- Dolby Gets Involved 150
- The Next Step: Dolby SR 151
- And Now - Dolby Digital 151
- About Dolby AC-3 152
- Making Films Sound Better 152
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