Alesis Hammerfall DSP System manual Clock Modes Synchronisation

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DDS

Activates all settings of this dialog.

Value

Shows the sample rate as adjusted in this dialog. The sample rate is defined by the basic setting (frequency), the multiplier, and the position of the acti- vated fader.

Frequency

Sets a fixed basic sample rate, which can be modified by multiplier and fader.

Freq. Multiplier

Changes the basic sample rate into

Single, Double oder Quad Speed mode.

Coarse

Fader for coarse modification of the basic sample rate. Click Active to acti- vate it. Minimum step size 1 Hz.

Fine

Fader for fine modification of the basic sample rate. Click Active to activate it. Minimum step size 1 Hz.

Notes on the faders

A mouse click within the fader area, above or below the fader know, will move the fader with the smallest step size up or down. Holding the Ctrl key while clicking will cause the fader to jump to its center (0) position.

11.3 Clock Modes - Synchronisation

AutoSync

The HDSP MADI has been equipped with AutoSync, an automatic clock source selection, which adopts the first available input with a valid digital signal as the clock reference input. The input currently used as sync reference is shown in the AutoSync Ref status field, together with its current sample frequency.

AutoSync guarantees that normal record and record-while-play will always work correctly. In certain cases however, AutoSync may cause feedback in the digital carrier, so synchronization breaks down. To remedy this, switch the HDSP’s clock mode over to 'Master'.

Via Pref. Sync Ref (preferred synchronization reference) a preferred input can be defined. As long as the card sees a valid signal there, this input will be designated as the sync source, oth- erwise the other inputs will be scanned in turn. If none of the inputs are receiving a valid signal, the card automatically switches clock mode to ‘Master’.

Thanks to its AutoSync technique and lightning fast PLLs, the HDSP is not only capable of han- dling standard frequencies, but also any sample rate between 28 and 105 kHz. Even the word clock input, which most users will use in varispeed operation, allows any frequency between 28 kHz and 105 kHz.

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User's Guide HDSP MADI © RME

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Contents Madi TotalMix Bit / 96 kHz SyncAlignZLMSyncCheck SteadyClockDriver Installation and Operation Windows GeneralDriver Installation and Operation Mac OS Connections and TotalMixTechnical Reference Hdsp Madi Package Contents Brief Description and CharacteristicsIntroduction System RequirementsHardware Connectors Hardware InstallationExternal Connectors Accessories WarrantyInternal Connectors Blue JumperAppendix TrademarksCE / FCC Compliance Statements FCCDriver Installation and Operation Windows Driver Installation Driver UpdateDeinstalling the Drivers Driver and FirmwareFirmware Update Configuring the Hdsp MadiSettings Dialog Quick Boot Safe ModeBuffer Size SyncCheckSettings dialog DDS Clock Modes Synchronisation SyncCheck Operation and Usage PlaybackAC-3 / DTS DVD-Playback AC-3/DTS under MMEMultichannel Multi-client Operation Low Latency under MME Buffer Size AdjustmentASIO-Multiclient Recording Known Problems Operation under AsioOperation under Gsif Gigasampler Interface Common ProblemsWindows 2000/XP Using multiple Hdsp Madi / AES-32 DIGICheckHotline Troubleshooting Input signal cannot be monitored in real-timeInstallation Driver Installation and Operation Mac OS Driver and Flash Update Flash UpdateConfiguring the Hdsp Madi Safe Mode Settings dialog DDS Clock Modes Synchronisation Round about Driver Installation Mac OS X FAQMidi doesnt work Repairing Disk Permissions Supported Sample RatesPCI card and PCI slot compatibility Various InformationHotline Troubleshooting Users Guide Hdsp Madi RME Connections and TotalMix Connections HeadphonesMadi I/Os Word Clock MidiWord Clock Input and Output InputTechnical Description and Usage Remember that a digital system can only have one masterCabling and Termination Operation TotalMix Routing and Monitoring OverviewUsers Guide Hdsp Madi RME User Interface Elements of a Channel Tour de TotalMixSubmix View Submix View Mute und SoloQuick Access Panel PresetsPreset Preset BanksMonitor Panel PreferencesMain Monitor Editing the NamesStereo Pan Law Hotkeys Menu Options Level Meter TotalMix The Matrix Elements of the Matrix ViewAdvantages of the Matrix TotalMix Super-FeaturesAsio Direct Monitoring Windows only Copy Routings to other Channels Selection and Group-based OperationDelete Routings Recording a Subgroup Loopback Mixing several input signals into one record channelRecording a Softwares playback Using external Effects Devices TotalMix Midi Remote Control SetupElement MappingMeaning in TotalMix Preset 3 38 / 56 / #G Preset 5 3A / 58 / #ASimple Midi Control Loopback DetectionUsers Guide Hdsp Madi RME Technical Reference Tech Info Inputs Technical SpecificationsOutputs Digital Transfer Modes Resolution / Bits per SampleStereo Monitor Output Phones Technical Background Madi BasicsLock and SyncCheck Latency and Monitoring How much Zero is Zero?Oversampling Sample frequency kHz 44.1 88.2Core Audios Safety Offset DS Double SpeedQS Quad Speed SteadyClock PCI Performance Terminology 96K Frame