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20

User's Guide HDSP System Multiface

© RME

12. Operation and Usage

12.1 Playback

The HDSP system can play back audio data only in supported modes (channels, PCM) and
formats (sample rate, bit resolution). Otherwise an error message appears (for example at 22
kHz and 8 bit).

In the audio application being used, HDSP must be selected as output device. This can often
be found in the

Options, Preferences

or

Settings

menus under

Playback Device, Audio Devices,

Audio

etc.

We strongly recommend switching off all system sounds (via >

Control Panel /Sounds

<). Also

HDSP should not be the

Preferred Device

for playback, as this could cause loss of synchroniza-

tion and unwanted noises. If you feel you cannot do without system sounds, you should con-
sider buying a cheap Blaster clone and select this as

Preferred Device

in >

Control Panel

/Multimedia /Audio

<.

The screenshot shows a
typical configuration dia-
log of a (stereo) wave
editor. After selecting a
device, audio data is sent
to an analog or digital
(ADAT / SPDIF) port,
depending on which has
been selected as playback
device.

Increasing the number
and/or size of audio buff-
ers may prevent the audio
signal from breaking up,
but also increases latency
i.e. output is delayed. For
synchronized playback of
audio and MIDI (or simi-
lar), be sure to activate
the checkbox ‘Get position from audio driver’.

The HDSP system’s ADAT optical interface allows sample rates of up to 96 kHz using a stan-
dard ADAT recorder. Single-channel data at this frequency requires two ADAT channels,
achieved using the

Sample Multiplexing

technique. This reduces the number of available ADAT

channels from 8 to 4. Under Windows MME, channels are routed to ADAT devices in double-
speed mode as follows:

•

Only stereo pairs (1+2) and (3+4) of the ADAT port are available

This kind of implementation allows a problem-free usage of the ADAT port in both Single and
Double Speed, as the routing doesn't change. However, the hardware spreads the data differ-
ently: Channel 1 is transmitted via channels 1 and 2, channel 2 via 3 and 4 etc.

Please refer to the diagram in chapter 18.2. Routing for record and playback is identical.

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Содержание Hammerfall Multiface

Страница 1: ...compact professional multitrack recording system ever PCI Busmaster Digital I O System PCI and CardBus Interface 8 8 2 Channels Analog ADAT Stereo Interface 24 Bit 96 kHz Analog Stereo Monitor ADAT Sync In TotalMix 24 Bit 96 kHz ü ü SyncAlign ZLM SyncCheck ...

Страница 2: ...ver Installation 16 10 2 Driver Update 16 10 3 Deinstalling the Drivers 16 10 4 Firmware Update 17 11 Configuring the Multiface 11 1 Settings Dialog 18 11 2 Clock Modes Synchronization 20 12 Operation and Usage 12 1 Playback 22 12 2 DVD Playback AC 3 DTS under MME 23 12 3 Low Latency under MME 24 12 4 Multi client Operation 24 12 5 Digital Recording 25 12 6 Analog Recording 26 13 Operation under A...

Страница 3: ...annel Routing at 96 kHz 40 Disconnect Mode Connections and TotalMix 24 Disconnect Mode 42 25 Analog Connections 25 1 Line Inputs 42 25 2 Line Outputs 43 25 3 Headphones 43 26 Digital Connections 26 1 ADAT 44 26 2 SPDIF 44 26 3 Word Clock 45 26 4 MIDI 45 27 Word Clock 27 1 Technical Description and Background 46 27 2 Cables and Termination 46 27 3 General Operation 47 28 TotalMix Routing and Monito...

Страница 4: ...ices 65 31 TotalMix MIDI Remote Control 31 1 Overview 66 31 2 Setup 66 31 3 Operation 66 31 4 Mapping 67 31 5 Simple MIDI Control 68 31 6 Loopback Detection 68 Technical Reference 32 Tech Info 70 33 Technical Specifications 33 1 Analog 71 33 2 Digital 71 33 3 Digital Inputs 72 33 4 Digital Outputs 72 33 5 MIDI 72 33 6 Transfer Modes Resolution Bits per Sample 73 33 7 General 73 34 Technical Backgr...

Страница 5: ...User s Guide HDSP System Multiface RME 5 User s Guide Multiface General ...

Страница 6: ...e audio hard ware 2 Package Contents Please check your Hammerfall DSP component s package to include each of the following PCI Interface PCI card HDSP Quick Info guide RME Driver CD Cable IEEE1394 4 5 m 15 ft CardBus Interface CardBus card Quick Info guide RME Driver CD Cable IEEE1394 4 5 m 15 ft 12 V car cable Battery cable Power supply 12 V 1 25 A and power cord Multiface I O box Multiface Quick...

Страница 7: ...itched off and the power cable is disconnected from the mains supply Inserting or removing a PCI card while the computer is in operation can cause irreparable damage to both motherboard and card 1 Disconnect the power cord and all other cables from the computer 2 Remove the computer s housing Further information on how to do this can be obtained from your computer s instruction manual 3 Important ...

Страница 8: ... in which case the LED will flash See also chapter 11 2 20 2 Clock Modes Synchronization The red HOST LED lights up when the power supply or the computer is switched on thus sig nalling the presence of operating voltage At the same time it operates as Error LED in case the I O box wasn t initialised or the connection to the interface has been interrupted Error cable not connected etc It flashes th...

Страница 9: ...est then the device has to be stopped Finally the card can be pulled out of the PCMCIA slot Windows When inserting the CardBus card it usually will be detected automatically by the notebook hardware and then the operating system A beep signals the detection In rare cases detection will fail If so simply remove the card and insert it again To remove the hardware click on the green arrow symbol in t...

Страница 10: ...other manufacturers 36001 Firewire cable IEEE1394 6M 6M 1 m 3 3 ft 36002 Firewire cable IEEE1394 6M 6M 3 m 9 9 ft 36005 Firewire cable IEEE1394 6M 6M 5 m 16 4 ft 36010 Firewire cable IEEE1394 6M 6M 10 m 32 8 ft Firewire cable for the HDSP system both sides 6 pin male Cable longer than 16 ft is not al lowed for FireWire therefore hard to get in computer shops However the HDSP system does not use Fi...

Страница 11: ... Elektronik GmbH Leipziger Strasse 32 D 09648 Mittweida Trademarks All trademarks registered or otherwise are the property of their respective owners RME DIGI96 SyncAlign ZLM SyncCheck DIGICheck and Hammerfall are registered trademarks of RME Intelligent Audio Solutions TMS and TotalMix are trademarks of RME Intelligent Audio Solutions Alesis and ADAT are registered trademarks of Alesis Corp ADAT ...

Страница 12: ...er electronic devices This equipment generates radio frequencies and if not installed and used according to the instructions in the User s Guide may cause interference harmful to the operation of other elec tronic devices Compliance with FCC regulations does not guarantee that interference will not occur in all in stallations If this product is found to be the source of interference which can be d...

Страница 13: ...User s Guide HDSP System Multiface RME 13 User s Guide Multiface Driver Installation and Operation Windows ...

Страница 14: ...er Update RME s driver updates often include a new hdsp32 inf file Also the revision number of the hardware might change after a flash update To prevent Windows 2000 XP from using an old hdsp32 inf or to copy some of the old driver files be sure NOT to let Windows search for the driver Instead tell Windows what to do Under Control Panel System Device Manager Sound Video and Game Controllers RME Ha...

Страница 15: ...us failure the card s second BIOS will be used from the next cold boot on Secure BIOS Technology Therefore the card stays fully functional The flash process should then be tried again on a different computer All other PCI cards and CardBus with 15 pin flat connector When the update fails status failure the flash process should be repeated several times until no error message occurs anymore If the ...

Страница 16: ...tal I Os Synchronization behaviour State of input and output Any changes made in the Settings dialog are applied immediately confirmation e g by clicking on OK or exiting the dialog is not required However settings should not be changed during playback or record if it can be avoided as this can cause unwanted noises Also please note that even in Stop mode several programs keep the recording and pl...

Страница 17: ...DAT Sync or if there is a valid and synchronous signal Sync The AutoSync Reference display shows the input and frequency of the current sync source Options TMS activates the transmission of Channel Status data and Track Marker information of the SPDIF input Disconnect interrupts the communi cation between I O box and PCI or CardBus card In case the Multiface has been configured using the Set tings...

Страница 18: ...n clock or Slave see AutoSync Ref 11 2 Clock Modes Synchronisation In the digital world all devices are either the Master clock source or a Slave synchronized to the master Whenever several devices are linked within a system there must always be a single master clock The Hammerfall DSP s intelligent clock control is very user friendly being able to switch between clock modes automatically Selectin...

Страница 19: ... used simultaneously in a system they not only have to operate with the same sample frequency but also be synchro nous with each other This is why digi tal systems always need a single de vice defined as master which sends the same clock signal to all the other slave devices RME s exclusive SyncCheck technology first imple mented in the Hammerfall enables an easy to use check and display of the cu...

Страница 20: ...t to an analog or digital ADAT SPDIF port depending on which has been selected as playback device Increasing the number and or size of audio buff ers may prevent the audio signal from breaking up but also increases latency i e output is delayed For synchronized playback of audio and MIDI or simi lar be sure to activate the checkbox Get position from audio driver The HDSP system s ADAT optical inte...

Страница 21: ...lected PowerDVD sends the decoded analog multichannel data to the HDSP The device selected as Preferred Playback Device defines the first playback channel Choosing ADAT 3 4 and 6 channel mode playback will happen on channels 11 to 16 Choosing ADAT 5 6 and 6 channel mode even the SPDIF output will be used for the last highest channels The available modes depend on the number of channels available a...

Страница 22: ...your system and software allows Some motherboards with insufficient PCI bandwidth like older VIA boards suffer from crackling at settings below 512 Be sure to set the buffer size to 512 or higher in such a case or get a new motherboard 12 4 Multi client Operation RME audio interfaces support multi client operation This means several programs can be used at the same time Also all formats like ASIO ...

Страница 23: ...n s audio attributes or similar dialog The screenshot to the right shows a typical dia log used for changing basic parameters such as sample frequency and resolution in an audio application Any bit resolution can be selected providing it is supported by both the audio hardware and the software Even if the input signal is 24 bit the application can still be set to record at 16 bit resolution The lo...

Страница 24: ...drift and delay between audio and MIDI You should use non emulated MME MIDI ports in such a case At a sample rate of 88 2 or 96 kHz the ADAT optical input and output operate in S MUX mode so the number of available channels is reduced from 8 to 4 13 2 Known Problems If a computer does not provide sufficient CPU power and or sufficient PCI bus transfer rates then drop outs crackling and noise will ...

Страница 25: ...he ADAT recorder Double clicking on the Sync button in Cubase s transport panel will open the Synchronization dialog Select ASIO 2 0 as the timecode base under Sync Source confirm the dialog with OK then activate Sync mode by single click ing on the Sync button If synchronization is not working i e Cubase does not respond when the ADAT is set to Play please try the following Check the cables Switc...

Страница 26: ...ot of confusion as the driver seems to behave com pletely buggy and the user does not recognize the simple reason for it for example simulta neous operation of ASIO and GSIF on the same channels In case Gigastudio loads well loads gig files too but won t play at all even when using the vir tual keyboard Go to Hardware Routing and select a valid MIDI input port Note that blank is not valid but none...

Страница 27: ...ctral Analyser Level Meter and Vector Audio Scope in a single window Bit Statistics Noise Shows the true resolution of audio signals as well as errors and DC offset Includes Signal to Noise measurement in dB and dBA plus DC measurement Channel Status Display Detailled analyzis and display of SPDIF and AES EBU Channel Status data Completely multi client Open as many measurement windows as you like ...

Страница 28: ...s therefore only valid for syn chronous audio data Sync is displayed referring to the card s clock but the incoming data is not in sync with the sample position received at the ADAT Sync In Then Cubase does not start Remedy Set Pref Sync Ref to the input corresponding to the received ADAT Sync signal Sync mode wasn t activated button in the transport panel or ASIO 2 0 has not been cho sen as the S...

Страница 29: ...gnal paths in ASIO double speed mode 88 2 96 kHz The devices available via the ASIO driver have been designed to avoid conflicts in normal operation Re cord and playback are identical Device The device name in the audio application SR Sample Rate Device name code Channel in ASIO host interface Multiface card number ...

Страница 30: ...hs in MME double speed mode 88 2 96 kHz The devices available via the MME wave driver have been designed to avoid conflicts in normal operation which is why channels 5 6 7 and 8 of the ADAT device have been omitted Record and play back are identical Device The device name in the audio application SR Sample Rate ...

Страница 31: ...User s Guide HDSP System Multiface RME 31 User s Guide Multiface Driver Installation and Operation Mac OS X ...

Страница 32: ...x from the Login Items and delete both files from your hard drive This driver version did not have the features AutoLoad Dock Lock and AutoRemove There fore one has to make sure that both programs have been removed from the system to prevent the old Settings dialog and TotalMix from being loaded 19 3 Flash Update The Flash Update Tool updates HDSP PCI cards or CardBus cards to the latest version I...

Страница 33: ...he hammer icon in the dock The mixer of the Hammerfall DSP System TotalMix can be opened by clicking on the mixer icon in the dock The Hammerfall DSP s hardware offers a number of helpful well thought of practical functions and options which affect how the card operates it can be configured to suit many different requirements The following is available in the Settings dialog Input selection Output...

Страница 34: ...ower Detected The interface has found an I O box and tries to load the firmware Connected Communication between interface and I O box operates correctly Disconnected Communication between interface and I O box has been interrupted I O box continues operation Clock Mode The unit can be configured to use its internal clock source Master or the clock source pre defined via Pref Sync Ref AutoSync Pref...

Страница 35: ...e Hammerfall DSP AutoSync may cause feedback in the digital carrier so synchro nization breaks down To remedy this switch the HDSP s clock mode over to Master Remember that a digital system can only have one master If the HDSP s clock mode is set to Master all other devices must be set to Slave The Hammerfall DSP s ADAT optical input and the SPDIF input operate simultaneously Be cause there is no ...

Страница 36: ...sy way of checking whether all digital de vices connected to the system are properly configured With SyncCheck finally anyone can master this common source of error previously one of the most complex issues in the digital studio world Thanks to its AutoSync technique and lightning fast PLLs the HDSP is not only capable of handling standard frequencies but also any sample rate between 28 and 103 kH...

Страница 37: ...es Nonetheless this driver file can be removed by simply dragging it to the trash bin This can be helpful in case a driver installation fails An incomplete installation can currently 10 3 2 only be detected indirectly The installation routine does not open a message window with a note about a restart of the computer This indicates that the driver file was not copied and the driver was not installe...

Страница 38: ...e the current Hammerfall DSP systems can be used in any PCI slot of all G4 and G5 models In case additional PCI cards of any manufacturer are used it might happen that the RME card is no longer found by the system Swapping cards between slots can be helpful in this case 21 6 Various Information The driver requires 10 2 8 or higher Older versions of OS X are not and will not be supported Via System...

Страница 39: ...ware 22 Hotline Troubleshooting The newest information can always be found on our website www rme audio com section Sup port Macintosh OS Playback works but record doesn t Check that there is a valid signal at the input Check whether the Hammerfall DSP has been selected as recording device in the audio application Crackle during record or playback Increase the number and size of buffers in the app...

Страница 40: ...agram Channel Routing at 96 kHz This diagram shows the signal paths in double speed mode 88 2 96 kHz The last four chan nels of the ADAT port have no function anymore in Core Audio but are used by the hardware to transmit data at double sample rate ...

Страница 41: ...User s Guide HDSP System Multiface RME 41 User s Guide Multiface Disconnect Mode Connections and TotalMix ...

Страница 42: ...e unit The electronic input stage is built in a servo balanced design which handles unbalanced mono jacks and balanced stereo jacks correctly automatically adjusting the level reference When using unbalanced cables with TRS jacks be sure to connect the ring contact of the TRS jack with ground Otherwise noise may occur caused by the unconnected negative input of the balanced input One of the main i...

Страница 43: ...a headroom of 12 dB is common practice each mixing desk op erating at 10 dBV is able to send and receive much higher levels Lo Gain is best suited for professional users who prefer to work balanced and at highest levels Lo Gain provides 15 dB headroom at 4 dBu nominal level 25 3 Headphones Channels 19 20 of the Multiface are available on the front via one 1 4 unbalanced TRS jack stereo output This...

Страница 44: ...s required Pins 2 and 3 of a female XLR plug are connected indi vidually to the two pins of a phono plug The cable shielding is only connected to pin 1 of the XLR not to the phono plug The ground free design with transformers for coaxial digital inputs and outputs offers a trou ble free connection of all devices along with perfect hum rejection and full AES EBU compati bility Output In SPDIF mode ...

Страница 45: ...d sound receivers television sets etc with AC 3 digital inputs as these decoders would otherwise not recognize the data as AC 3 26 3 Word Clock The Multiface s word clock input is a high impedance type not terminated Thanks to a low impedance but short circuit proof output the Multiface delivers 4 Vpp to 75 Ohms For wrong termination with 2 x 75 Ohms 37 5 Ohms there are still 3 3 Vpp at the out pu...

Страница 46: ...als are usually distributed in the form of a network split with BNC T adapters and terminated with resistors We recommend using off the shelf BNC cables to connect all devices as this type of cable is used for most computer networks You will find all the neces sary components T adapters terminators cables in most electronics and or computer stores Ideally the word clock signal is a 5 Volt square w...

Страница 47: ...d and a valid word clock signal is present The signal at the BNC input can be Single or Double Speed the Hammerfall DSP automatically adapts to it As soon as a valid signal is detected the green WC LED on the front DIGITAL STATE is lit and the Settings dialog shows either Lock or Sync see chapter 34 1 As soon as there is a valid signal at the BNC jack AutoSync Ref will display Word This mes sage h...

Страница 48: ...complete implementation of the ADM functions Integration of external devices Use TotalMix to insert external effects devices be it in the playback or in the record path Depending on the current application the functionality equals insert or effects send and effects return for example as used during real time monitoring when adding some reverb to the vocals Every single input channel playback chann...

Страница 49: ...User s Guide HDSP System Multiface RME 49 ...

Страница 50: ...wn from an Inline desk so that the row Software Playback equals the Tape Return of a real mixing desk Top row Hardware inputs The level shown is that of the input signal i e fader independ ent Via fader and routing field any input channel can be routed and mixed to any hardware output bottom row Middle row Playback channels playback tracks of the audio software Via fader and rout ing field any pla...

Страница 51: ...ica tion for the first time a default file is loaded sending all playback tracks 1 1 to the correspond ing hardware outputs with 0 dB gain and activating phones monitoring Hold down Ctrl and click on preset button 1 to make sure that factory preset 1 is loaded The faders in the top row are set to maximum attenuation called m a in the following so there is no monitoring of the input channels The Su...

Страница 52: ...n channels 7 and 8 The present pan value is also being dis played below the fader Please carry out the same steps for Out 2 now in order to route it to output 8 as well In short While editing the Submix AN7 AN8 you have direct access to other submixes on other channels because their routing fields are set to different destinations And you get a direct view of how their faders and panoramas are set...

Страница 53: ...entering Double Speed mode 96 kHz The display is adjusted accordingly and all fader settings remain stored 28 5 Submix View Such a wide range of possibilities make it difficult to maintain the overview Because practically all hardware outputs can be used for different submixes as shown up to 10 completely inde pendent stereo submixes 5 4 channel submixes etc And when opening the routing windows yo...

Страница 54: ...ut monitoring a stereo and mono mix and various submixes without any problem Also here RME s love for details can be seen If any parameter is being altered after loading a preset e g moving a fader the preset display flashes in order to announce that something has been changed still showing which state the present mix is based on If no preset button is lit another preset had been loaded via the Fi...

Страница 55: ...aybacks to the analog Phones output Level display set to RMS 3 dB View Submix active Note This preset is Default offering the standard functionality of a I O card Preset 2 Description All channels routed 1 1 input and playback monitoring via Phones As Preset 1 plus submix of all inputs 0 dB on Phones Preset 3 Description All channels routed 1 1 input and playback monitoring via Phones and outputs ...

Страница 56: ...justed with the channel s input fader Monitor Phones 1 2 3 Use the drop down menu to select the hardware outputs where the submixes are sent to These submixes are usually phones mixdowns for the musicians A click on the button allows to hear the specific submix via the Main Monitor outputs So when setting up or modifying the submix for the musician this process can be monitored easily and any time...

Страница 57: ...d A right mouse click on the white name field brings up the dialog box Enter Name Any name can be entered in this dialog Enter Return closes the dialog box the white label now shows the first letters of the new name ESC cancels the process and closes the dialog box Moving the mouse above the label brings up a tool tip with the complete name The hardware outputs third row can be edited in the same ...

Страница 58: ...me TotalMix also supports combinations of these keys If you press Ctrl and Alt at the same time clicking with the mouse makes the faders jump to 0 dB pairwise and they can be set pairwise by Shift Alt in fine mode Also very useful the faders have two mouse areas The first area is the fader button which can be grabbed at any place without changing the current position This avoids unwanted changes w...

Страница 59: ... ASIO Direct Monitoring Windows only When de activated any ADM commands will be ignored by TotalMix In other words ASIO Direct Monitoring is globally de activated Link Faders Selecting this option all faders will be treated as stereo pairs and moved pair wise Hotkey L Level Meter Setup Configuration of the Level Meters Hotkey F2 See chapter 28 14 Preferences Opens a dialog box to configure several...

Страница 60: ...ne signal shows 0 dBFS on both Peak and RMS meters This setting also yields directly readable signal to noise values Otherwise the value shown with noise is 3 dB better than it actually is because the reference is not 0 dB but 3 dB For example in WaveLab The value displayed in the text field is independent of the setting 40 60 dB it represents the full 24 bit range of the RMS measurement thus maki...

Страница 61: ... Black gain field Shows the current gain value as dB Orange gain field This routing is muted To maintain overview when the window size has been reduced the left and upper labels are floating They won t left the visible area when scrolling 29 3 Operation Using the Matrix is a breeze It is very easy to indentify the current crosspoint because the outer labels light up in orange according to the mous...

Страница 62: ... output 4 at 9 dB Each time you set up the right channel 2 4 the change in pan destroys the gain setting of the left channel 1 2 A real hassle In Matrix view you simply click on the corresponding routing point set the level via Ctrl mouse and move on You can see in TotalMix view how pan changes to achieve this spe cial gain and routing when performing the second fourth setting 30 TotalMix Super Fe...

Страница 63: ...same way on all headphones Select input 1 open the menu Edit It shows Copy In 1 Now select the desired new input for example In 8 The menu now shows Paste In 1 to In 8 Click on it done If you are familiar with this functionality just use Ctrl C and Ctrl V Else the self updating menu will always let you know what actually will happen Tip Have the Matrix window open as second window when doing this ...

Страница 64: ...put signal to any hardware output Using the subgroup recording the input can still be recorded on a different channel Note Because of a technical limitation the input s level meter no longer shows the input signal of the hardware which still can be routed by TotalMix but the loopback signal This gives the false impression of the loopback signal being present at the TotalMix mixer input which is no...

Страница 65: ...0 dB and the panorama fully to the right Adjust the input level at the reverb unit to an optimal setting Next the output of the reverb unit is connected to a free stereo input for example 5 6 Use the TotalMix level meters to adjust a matching output level at the reverb unit Now click on channels 19 20 in the bottom row and move the fader of inputs 5 6 until the reverb effect gets a bit too loud in...

Страница 66: ...ndard Control Change Volume via MIDI channel 1 With this the main volume of the Multiface is controlable from nearly any MIDI equipped hardware device 31 2 Setup Open the Preferences dialog menu Options or F3 Select the MIDI Input and MIDI Output port where your controller is connected to When no feedback is needed when using only standard MIDI commands instead of Mackie Control protocol select NO...

Страница 67: ...een both applications TotalMix also supports the 9th fader of the Mackie Control This fader labeled Master will control the stereo output faders lowest row which are set up as Main Monitor outputs in the Monitor panel Always and only 31 4 Mapping TotalMix supports the following Mackie Control surface elements Element Meaning in TotalMix Channel faders 1 8 volume Master fader Main Monitor channel s...

Страница 68: ... 63 D 3 Monitor Phones 2 40 64 E 3 Monitor Phones 3 41 65 F 3 Preset 1 36 54 F 2 Preset 2 37 55 G 2 Preset 3 38 56 G 2 Preset 4 39 57 A 2 Preset 5 3A 58 A 2 Preset 6 3B 59 B 2 Preset 7 3C 60 C 3 Preset 8 3D 61 C 3 An example of a small MIDI controller covering such MIDI functionality and even some more is the Behringer BCN44 This little box has 4 pots and 8 buttons for all the above functions for ...

Страница 69: ...User s Guide HDSP System Multiface RME 69 User s Guide Multiface Technical Reference ...

Страница 70: ...tions Driver updates Hammerfall DSP Lists all changes of the driver updates DIGICheck Analysis tests and measurements with RME audio hardware A description of DIGICheck including technical background information ADI 8 Inside Technical information about the RME ADI 8 24 bit AD DA converter Many background information on laptops and tests of notebooks HDSP System Notebook Basics Notebook Hardware HD...

Страница 71: ... 1 kHz 0 5 dB 5 Hz 20 9 kHz Frequency response DA 96 kHz 0 5 dB 5 Hz 35 kHz Output 6 3 mm TRS jack servo balanced Output impedance 47 Ohm Output level by jumper Hi Gain 4 dBu 10 dBV Output level at 0 dBFS Hi Gain 19 dBu Output level at 0 dBFS 4 dBu 13 dBu Output level at 0 dBFS 10 dBV 2 dBV Stereo Monitor Output Maximum output level at 0 dBFS 8 dBu Dynamic range 108 dB RMS unweighted unmuted 112 d...

Страница 72: ...conversion to Single Speed Not affected by DC offsets within the network Overvoltage protection Level range 1 0 Vpp 5 6 Vpp Lock Range 28 kHz 103 kHz Jitter when synced to input signal 3 ns 33 4 Digital Outputs SPDIF AES EBU 1 x RCA transformer balanced galvanically isolated according to AES3 1992 Output level Professional 2 3 Vpp Consumer 1 0 Vpp Format Professional according to AES3 1992 Amendme...

Страница 73: ...ytes 24 bit 4 byte MSB stereo 8 bytes 32 bit 4 byte stereo 8 bytes 33 7 General Power supply external switching power supply 100 240 V AC 15 Watt Current at 12 Volt operating voltage unloaded 500 mA 6 Watt Current at 12 Volt operating voltage loaded 760 mA 9 Watt Typical power consumption 9 Watt Voltage range DC 8 V 28 V AC 8 V 20 V Dimensions WxHxD 215 x 44 x 115 mm 8 5 x 1 73 x 4 5 Weight 1 5 kg...

Страница 74: ...s slightly higher or lower than the Multiface s internal sample rate Result When reading out the data there will fre quently be read errors that cause clicks and drop outs Also when using multiple inputs a simple LOCK is not sufficient The above described problem can be solved elegantly by setting the Multiface from Master to AutoSync its internal clock will then be the clock delivered by the mixi...

Страница 75: ...ency range as far as possible This typically generates a delay of one millisecond A playback and re record of the same signal via DA and AD loopback then causes an offset of the newly recorded track of up to 2 ms The exact delays of the Multiface are Sample frequency kHz 44 1 48 88 2 96 AD 31 x 1 fs ms 0 7 0 65 0 35 0 32 DA 30 x 1 fs ms 0 68 0 62 0 34 0 31 Buffer Size Latency Windows This option f...

Страница 76: ...ries one channel whose odd and even samples are being distributed to the former left and right channels By this you get the double amount of data i e also double sample rate Of course in order to transmit a stereo signal two AES EBU ports are necessary then This transmission mode is called Double Wire in the professional studio world and is also known as S MUX abbreviation for Sample Multiplexing ...

Страница 77: ...le in principle because the audio information is stored in the same place in the data stream However there are blocks of additional information which are different for both standards In the table the meaning of the first byte 0 is shown for both formats The first bit already determines whether the following bits should be read as Professional or Con sumer information Byte Mode Bit 0 1 2 3 4 5 6 7 ...

Страница 78: ...uit board PCB you can see the two switching power supplies They generate both 5 Volts for the digital circuitry and 13 Volts for the analog circuitry from nearly every possible input voltage In the center you ll see the heart of the Multiface the Xilinx FPGA The analog circuitry and DA converter for the headphone output is located on the right from the FPGA Left from the FPGA two Low Jitter PLLs c...

Страница 79: ... cover to the left and move it back over the Multiface Take care that the flat cable has the same accurate shape as when opening it Else the flat cable will cause mechanical problems while re assembling 10 Move the cover so that it is placed 2 centimeters 1 inch above the housing Tilt the cover so that the jacks point to the holes in the rear panel Carefully slide the jacks into the holes by movin...

Страница 80: ...80 User s Guide HDSP System Multiface RME 36 Diagrams 36 1 Block Diagram Multiface ...

Страница 81: ...balanced with no loss in level This is the same as when using a TRS jack with ring connected to ground TRS Phones jack The analog monitor output on the front is accessible through a stereo TRS jack This allows a direct connection of headphones In case the output should operate as Line output an adapter TRS plug to RCA phono plugs or TRS plug to TS plugs is required The pin assignment follows inter...

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