Appendix C Midi Clock Info, Clock Modes | dbx Pro QUANTUM specs

Appendix C MIDI Clock Info

QUANTUM

C.1 Clock Modes

With digital inputs, clocks are recovered from the incoming sample stream. For example, if you have a few different units digitally connected by S/PDIF, digital transfers may induce jitter into the audio stream. Syncing multiple pieces of digital equipment to a master clock reduces the jitter between them. Keeping jitter to a minimum allows for maximum fidelity. This is essential for accurate monitoring at different points along the chain.

With an analog input and downstream digital units, using the QUANTUM as a master clock will keep the digital signal accurate. While the differences in jittery sync without a master clock may be miniscule, it is better to reduce the vari- ables in favor of accuracy. Running a master clock that all downstream digital units sync to is just a good idea. Make sure that when you are using the SuperClock modes you are on the correct settings (SC 44.1, SC 48, etc.) these settings are designed especially for SuperClock. If these settings are not used, syncing errors will occur. The following chart shows the possible clock modes.

Possible Clock Modes

1.Analog In

44.1	48	88.2	96	Int Xtals
44.1	48	88.2	96	AES sync
44.1	48	88.2	96	Word
44.1	48			SC44.1, SC48,

2. Digital in - AES

44.1	48	88.2	96	AES sync
44.1	48	88.2	96	Word
44.1	48			SC44.1, SC48,

3. Digital In - SPDIF

44.1	48	88.2	96	SPDIF sync
44.1	48	88.2	96	Word
44.1	48			SC44.1, SC48,

4. Digital in - SRC - Int Xtals

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 44.1	44.1-> 48

5. Digital in - SRC - Word

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 48	48 -> 44.1
44.1-> 48	44.1-> 44.1

6. Digital in - SRC - SC44.1, SC48

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 48	48 -> 44.1
44.1-> 48	44.1-> 44.1

7.Analog in - SRC - AES Sync

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 48	48 -> 44.1
44.1-> 48	44.1-> 44.1

8.Analog in - SRC - Word

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 48	48 -> 44.1
44.1-> 48	44.1-> 44.1

9.Analog in - SRC - SC44.1, SC48

96-> 48	96 -> 44.1
88.2-> 48	88.2 -> 44.1
48 -> 48	48 -> 44.1
44.1-> 48	44.1-> 44.1

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68	QUANTUM User Manual

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dbx Pro QUANTUM user manual Appendix C Midi Clock Info, Clock Modes

Contents

Quantum Important Safety Instructions Declaration Conformity Table of Contents Quantum Figure Index Page Intro What is QUANTUM? Introduction Introduction What is QUANTUM? Service Contact InfoWarranty Quantum Section Getting Started Rear Panel ConnectionsFront Panel Getting Started Section Front Panel Signal Path Quantum Wizard Quantum is a Mastering Processor that has many features Getting Started Section Mastering and the Quantum Quantum Navigation Navigation Multiband Compressor Navigating the Broadband Compressor Navigation Section Broadband Compressor Navigating the Multiband Gate Multiband Gate Navigating the Broadband Gate Navigation Section Broadband Gate Navigating the Multiband Limiter Multiband Limiter Navigating theBroadband Limiter Navigation Section Broadband Limiter Navigating the Multiband EQ/XOver EQ/XOver Navigating the Broadband EQ/SEQ Navigation Section EQ/SEQ Navigating Norm/Output Norm/Output Navigating Other Navigation Section Other Navigating Utility Utility Section Software Operations FX Chains Software Operations Section FX Chains Chain Type Stereo Broadband Chain Type Mono Mono Input CH1 or CH2 Software Operations Section Programs/Setups Program Pop Master Saving a Setup Section Replace Old Software Operations Section Saving a SetupSaving a Program Store New Analog Meters Bypass FunctionMeters TSE Level Meters Meter Options Software Operations Section MetersDigital Meters Compressor Gate / Expander Monitor OutputsLimiter De-Esser Detailed Detailed Parameters Multiband Compression Detailed Parameters Section Multiband Compression Broadband Compression Detailed Parameters Section Broadband Compression Release 360 to 5 dB / Sec per band or global Ratio 11.0 to 115 per band or globalAttack 0.1 to 200 m Sec per band or global Max ATT 0 to Inf. dB per band or global Detailed Parameters Section Broadband Gate Multiband Limiting Limiter On/Off Broadband LimitingAttack .01 to 200 m Sec per band or global Type PkStop+/RMS POS Pre/Post Detailed Parameters Section Broadband LimitingEQ On/Off Type Const Q / Adapt Q XOver SEQ1 FC 20.0 Hz to 20.0 kHz Detailed Parameters Section SEQSchain EQ On/Off SEQ2, 3, 4 FC 20.0 Hz to 20.0 kHz Stereo Adjust Type Detailed Parameters Section Ambience 13 TCMDe-Esser Normalization Output Detailed Parameters Section Output Shaping S1 or S2Dither Out All or Digital Page Utilities Utilities Input Output Utilities Section Output Digital Input ControlsMidi CC Map Midi Program Changes Setup Sysex DataMidi Channels Sysex Dump Utilities Section Setup Sysex Data A/D CalibrateMisc Page Guide Hardware Application GuideAnalog Mastering Software Application Guide Section Digital Mastering DAW to DAT Application Guide Section Analog Tracking 586 Digital Tracking Application Guide Section Analog Mixing Digital Mixing Application Guide Section Analog to Digital Converter Sample Rate Converter QUANTUMAppendix Appendix a Miscellaneous Information Hard & Soft ResetsChange Default Startup Program Front Panel Lockout By Roger Johnson TypeIV White Paper Appendix B Appendix B TypeIV White Paper Converted Level vs. Input Level Type Amplitude Time Clip Level High-Frequency Information Completely Lost Appendix C Midi Clock Info Clock Modes Quantum Sync Input Fig. C.1 Appendix C Miscellaneous Clock Info Fig. C.2 Receive One Setup 43h ProceduresRequest One Setup 02h Sysex Definitions Appendix D Appendix D Sysex Definitions Procedure Setup Dump Version Reset Device 21hSysex Setup Dump Sample Setup Type and Setup Number Appendix E Midi CC Tables Midi CC MultiBand Chains Midi CC Tables Appendix E Midi CC MultiBand Chains Midi CC Stereo Non-MultiBand Midi CC Dual Mono Chains Midi CC Stereo Non-Multiband Midi CC Tables Appendix E Midi CC Dual Mono Chains Appendix F Factory Presets Factory Programs Factory Setups StereoMono Appendix G Specifications Specifications Appendix H Appendix H Quantum Harman International Company