Intel Fireface 800 User Manual
®
User's Guide
The most powerful FireWire
24 Bit / 192 kHz 9
SyncAlign
Fireface 800
®
audio interface ever!
ZLM® SyncCheck®
TotalMix
™
SteadyClock
™
FireWire 800 / 400 Digital I/O System
10 + 16 + 2 Channels Analog / ADAT / SPDIF Interface
24 Bit / 192 kHz Digital Audio
56 x 28 Matrix Router
MIDI I/O
Stand-Alone Operation
MIDI Remote Control
Stand-Alone MIDI Controlled Operation
Important Safety Instructions..................................5
General
1 Introduction ...............................................................8
2 Package Contents.....................................................8
3 System Requirements ..............................................8
4 Brief Description and Characteristics.....................8
5 First Usage - Quick Start
5.1 Connectors and Front Panel...................................9
5.2 Quick Start ............................................................10
6 Accessories.............................................................10
7 Warranty...................................................................11
8 Appendix..................................................................11
Installation and Operation - Windows
9 Hardware Installation..............................................16
10 Driver and Firmware
10.1 Driver Installation .................................................16
10.2 Driver Update.......................................................17
10.3 Deinstalling the Drivers........................................17
10.4 Firmware Update..................................................17
11 Configuring the Fireface
11.1 Settings dialog – General.....................................18
11.2 Settings dialog – DDS..........................................21
11.3 Clock Modes - Synchronization............................22
11.4 Limit Bandwidth....................................................23
12 Operation and Usage
12.1 Playback...............................................................24
12.2 DVD Playback (AC-3 / DTS)................................25
12.3 Low Latency under MME......................................26
12.4 Notes on WDM.....................................................27
12.5 Multi-client Operation ...........................................28
12.6 Digital Recording..................................................29
12.7 Analog Recording.................................................30
13 Operation under ASIO 2.0
13.1 General ................................................................30
13.2 Known Problems..................................................31
14 Operation under GSIF.............................................31
15 Using more than one Fireface................................32
16 DIGICheck................................................................33
17 Hotline – Troubleshooting
17.1 General ................................................................34
17.2 Installation............................................................35
18 Diagrams
18.1 Channel Routing ASIO 96 kHz ............................36
18.2 Channel Routing MME 96 kHz.............................37
Installation and Operation - Mac OS X
19 Hardware Installation..............................................40
20 Driver
20.1 Driver Installation .................................................40
20.2 Driver Update.......................................................41
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User's Guide Fireface 800 © RME
21 Firmware Update.....................................................41
22 Configuring the Fireface
22.1 Settings Dialog – General....................................42
22.2 Settings Dialog – DDS.........................................45
22.3 Clock Modes - Synchronization...........................46
22.4 Limit Bandwidth....................................................47
23 Mac OS X FAQ
23.1 Round about Driver Installation............................48
23.2 MIDI doesn't work ................................................48
23.3 Supported Sample Rates.....................................49
23.4 Repairing Disk Permissions.................................49
23.5 FireWire Compatibility..........................................49
23.6 Various Information..............................................47
24 Hotline – Troubleshooting .....................................50
25 Diagram: Channel Routing at 96 kHz......................51
Stand-Alone Operation, Connections and TotalMix
26 Stand-alone Operation
26.1 10-channel AD/DA-Converter..............................54
26.2 4-channel Mic Preamp.........................................54
26.3 Monitor Mixer .......................................................54
26.4 Digital Format Converter......................................54
26.5 Analog/digital Routing Matrix...............................54
27 Analog Inputs
27.1 Line Rear .............................................................55
27.2 Microphone / Line Front.......................................55
27.3 Instrument............................................................56
28 Analog Outputs
28.1 Line......................................................................57
28.2 Phones.................................................................57
29 Digital Connections
29.1 ADAT ...................................................................58
29.2 SPDIF...................................................................58
29.3 MIDI......................................................................59
30 Word Clock
30.1 Word Clock Input and Output ..............................60
30.2 Technical Description and Background...............61
30.3 Cables and Termination.......................................62
30.4 General Operation................................................62
31 TotalMix: Routing and Monitoring
31.1 Overview..............................................................63
31.2 The User Interface...............................................65
31.3 Elements of a Channel ........................................66
31.4 Tour de TotalMix..................................................66
31.5 Submix View ........................................................68
31.6 Mute and Solo......................................................68
31.7 Quick Access Panel.............................................69
31.8 Presets.................................................................69
31.9 Monitor Panel.......................................................71
31.10 Preferences........................................................71
31.11 Editing the Names..............................................72
31.12 Hotkeys..............................................................73
31.13 Menu Options.....................................................74
31.14 Level Meter ........................................................75
User's Guide Fireface 800 © RME
3
32 TotalMix: The Matrix
32.1 Overview..............................................................76
32.2 Elements of the Matrix View ................................76
32.3 Usage...................................................................76
32.4 Advantages of the Matrix.....................................77
33 TotalMix Super-Features
33.1 ASIO Direct Monitoring (Windows only) ..............77
33.2 Selection and Group based Operation ................78
33.3 Copy Routings to other Channels........................78
33.4 Delete Routings....................................................78
33.5 Recording a Subgroup (Loopback)......................79
33.6 Using external Effects Devices............................80
33.7 MS Processing.....................................................81
34 TotalMix MIDI Remote Control
34.1 Overview..............................................................82
34.2 Mapping ...............................................................82
34.3 Setup....................................................................83
34.4 Operation .............................................................83
34.5 Simple MIDI Control.............................................84
34.6 Loopback Detection.............................................85
34.7 Stand-Alone MIDI Control....................................86
Technical Reference
35 Tech Info ..................................................................90
36 Technical Specifications
36.1 Analog..................................................................91
36.2 MIDI......................................................................92
36.3 Digital...................................................................92
36.4 Digital Inputs ........................................................93
36.5 Digital Outputs......................................................94
36.6 Transfer Modes: Resolution/Bits per Sample......94
36.7 General ................................................................94
37 Technical Background
37.1 Lock and SyncCheck...........................................95
37.2 Latency and Monitoring........................................96
37.3 FireWire Audio .....................................................97
37.4 Number of Channels and Bus Load.....................99
37.5 DS – Double Speed .............................................99
37.6 QS – Quad Speed................................................99
37.7 AES/EBU – SPDIF.............................................100
37.8 Noise Level in DS / QS Mode ............................101
37.9 SteadyClock.......................................................101
38 Diagrams
38.1 Block Diagram Fireface......................................102
38.2 Connector Pinouts .............................................103
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User's Guide Fireface 800 © RME
Important Safety Instructions
ATTENTION! Do not open chassis – risk of electric shock
The unit has unisolated live parts inside. No user serviceable parts inside.
Refer service to qualified service personnel.
Mains
• The device must be earthed – never use it without proper grounding
• Do not use defective power cords
• Operation of the device is limited to the manual
• Use same type of fuse only
To reduce the risk of fire or electric shock do not expose this device to rain or
moisture. Prevent moisture and water from entering the device. Never leave
a pot with liquid on top of the device. Do not use this product near water, i. e.
swimming pool, bathtub or wet basement. Danger of condensation inside –
don't turn on before the device has reached room temperature.
Installation
Surface may become hot during operation – ensure sufficient ventilation.
Avoid direct sun light and do not place it near other sources of heat, like radiators or stoves. When mounting in a rack, leave some space between this
device and others for ventilation.
Unauthorized servicing/repair voids warranty. Only use accessories
specified by the manufacturer.
Read the manual completely. It includes all information necessary
to use and operate this device.
User's Guide Fireface 800 © RME
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User's Guide Fireface 800 © RME
User's Guide
Fireface 800
General
User's Guide Fireface 800 © RME
7
1. Introduction
Thank you for choosing the Fireface 800. This unique audio system is capable of transferring
analog and digital audio data directly to a computer from practically any device. The latest Plug
and Play technology guarantees a simple installation, even for the inexperienced user. The
numerous unique features and well thought-out configuration dialog puts the Fireface 800 at the
very top of the range of computer-based audio interfaces.
The package contains drivers for Windows 2000 SP4, Windows XP, XP 64, Windows Vista,
Windows Vista 64, Mac OS X and Mac OS X x86.
Our high-performance philosophy guarantees maximum system performance by executing as
many functions as possible not in the driver (i.e. the CPU), but directly within the audio hardware.
2. Package Contents
Please check that your Fireface 800 package contains each of the following:
• RME Driver CD
• Cable IEEE1394a (FW400), 4 m (13 ft)
• Power cord
• Manual
• 1 optical cable (TOSLINK), 2 m (6.6 ft)
3. System Requirements
• Windows 2000 SP4, XP, XP 64, Vista, Vista 64, Mac OS X (>10.3) PPC or Intel
• 1 OHCI compatible FireWire Port 400 (1394a) or 800 (1394b)
• Pentium III 866 MHz or better, G4 Dual 867 or better
Note
: Examples and detailed descriptions of suitable audio desktop systems can be found in
the Tech Info RME Reference PCs: Hardware recommendations. Information on compatibility
and performance of notebooks/laptops is included in RMEs Tech Infos about notebooks, HDSP
System – Notebook Basics and Tests. A report about incompatible FireWire 800 controllers is
found in the Tech Info FireWire 800 Hardware – Compatibility Problems.
4. Brief Description and Characteristics
• Enhanced Mixed Mode: Analog, ADAT and SPDIF I/O simultaneously usable
• 8 buffer sizes/latencies available: 1.0 / 1.5 / 2.1 / 3 / 6 / 12 / 17 / 23 ms
• All settings can be changed in real-time
• 8 channels 96 kHz/24 bit Record/Playback via ADAT optical (S/MUX)
• Clock modes slave and master
• Automatic and intelligent master/slave clock control
• Unsurpassed Bitclock PLL (audio synchronization) in ADAT mode
• Word clock input and output
• TotalMix for latency-free submixes and perfect ASIO Direct Monitoring
• TotalMix: 1568 channel mixer with 42 bit internal resolution
• SyncAlign guarantees sample aligned and never swapping channels
• SyncCheck tests and reports the synchronization status of input signals
• 1 x MIDI I/O, 16 channels high-speed MIDI
• 1 x Hi-power headphone output
• DIGICheck DSP: Level meter in hardware, peak- and RMS calculation
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User's Guide Fireface 800 © RME
5. First Usage - Quickstart
5.1 Connectors and Front Panel
The front of the Fireface 800 features an instrument input, microphone inputs and line inputs
with gain pots, a stereo headphone output with volume pot, and several status LEDs.
MIDI/I indicates MIDI data received by the MIDI input.
MIDI/O indicates MIDI data sent to the MIDI output.
The Digital State LEDs (WC, SPDIF,
ADAT, TCO) indicate a valid input signal
separately for each digital input. Additionally,
RME's exclusive SyncCheck indicates if one
of these inputs is locked, but not synchronous to the others, in which case the LED
will flash. See also chapter 11.3/22.3, Clock
Modes - Synchronization.
The red HOST LED lights up when the Fireface 800 has been switched on, thus signalling the
presence of operating voltage. At the same time it operates as error LED, in case the FireWire
connection hasn't been initialised yet, or has been interrupted (error, cable not connected etc.).
Phones is a low impedance line output of highest quality. It provides a sufficient and undistorted volume when used with headphones.
The rear panel of the Fireface
800 features eight analog
inputs and outputs, the power
socket, and all digital inputs
and outputs:
ADAT1 I/O (TOSLINK)
ADAT2 I/O (TOSLINK): Can also be used as optical SPDIF input and output, if set up accord-
ingly in the Settings dialog. The Settings dialog is started by clicking on the fire symbol in the
Task Bar's system tray.
SPDIF I/O coaxial (RCA): Fully AES/EBU compatible by transformer-coupling and level adjustment. The Fireface 800 accepts the commonly used digital audio formats, SPDIF as well as
AES/EBU.
Word Clock I/O (BNC): A push switch allows to activate internal termination (75 Ohms). When
termination is activated the yellow LED besides the switch lights up.
IEC receptacle for mains power connection. The specially developed, internal hi-performance
switch mode power supply makes the Fireface operate in the range of 100V to 240V AC. It is
short-circuit-proof, has an integrated line-filter, is fully regulated against voltage fluctuations,
and suppresses mains interference.
User's Guide Fireface 800 © RME
9
5.2 Quick Start
After the driver installation (chapter 10 / 20) connect the TRS-jacks or the XLR connectors with
the analog signal source. The input sensitivity of the rear inputs can be changed in the Settings
dialog (Input Level), assuring the highest signal to noise ratio will be achieved. Try to achieve
an optimum input level by adjusting the source itself. Raise the source’s output level until the
peak level meters in TotalMix reach about –3 dB.
The analog line inputs of the Fireface 800 can be used with +4 dBu and -10 dBV signals. The
electronic input stage can handle balanced (XLR, TRS jacks) and unbalanced (TS jacks) input
signals correctly.
The front's inputs signal level can be optimized using the Fireface's Gain pots. A Signal LED
and a Clip LED help to find the correct level adjustment.
The Fireface's digital outputs provide SPDIF (AES/EBU compatible) and ADAT optical signals
at the corresponding ports.
On the analog playback side (the DA side), a coarse adjustment of the analog output level at
the rear jacks is available in the Settings dialog (Output Level).
The output signal of channels 9/10 is available on the front. Their output level can be set using
the VOL pot. This output is a very low impedance type, which can also be used to connect
headphones.
The function Store in Flash Memory (Settings dialog) and Flash current mixer state (TotalMix)
allow to store the current settings into the Fireface 800. The unit then remembers all settings,
and loads these automatically when switched on. With this, the Fireface 800 can be used standalone after setting it up accordingly, replacing lots of dedicated devices (see chapter 26).
6. Accessories
RME offers several optional components for the Fireface 400:
Part Number Description
Standard FireWire 400 cable, both sides 6-pin male:
FWK660100BL FireWire cable IEEE1394a 6M/6M, 1 m (3.3 ft)
FWK660300BL FireWire cable IEEE1394a 6M/6M, 3 m (9.9 ft)
FWK660400BL FireWire cable IEEE1394a 6M/6M, 4 m (13 ft)
FireWire 400 cable, 4-pin male to 6-pin male (4-pin sockets are found on most laptops):
FWK460100BL FireWire cable IEEE1394a 4M/6M, 1 m (3.3 ft)
FWK460300BL FireWire cable IEEE1394a 4M/6M, 3 m (9.9 ft)
FWK460400BL FireWire cable IEEE1394a 4M/6M, 4 m (13 ft)
: Cable longer than 15 ft (4.5m) is not specified for FireWire.
Note
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User's Guide Fireface 800 © RME
Optical cable for SPDIF and ADAT operation:
OK0050 Optical cable, TOSLINK, 0.5 m (1.6 ft)
OK0100 Optical cable, TOSLINK, 1 m (3.3 ft)
OK0200 Optical cable, TOSLINK, 2 m (6.6 ft)
OK0300 Optical cable, TOSLINK, 3 m (9.9 ft)
OK0500 Optical cable, TOSLINK, 5 m (16.4 ft)
OK1000 Optical cable, TOSLINK, 10 m (33 ft)
Time Code Option to be inserted in the rear slot, adding LTC and Video synchronization inputs
to the Fireface, plus a LTC output.
TCOFF Time Code Option Fireface
7. Warranty
Each individual Fireface 800 undergoes comprehensive quality control and a complete test at
IMM before shipping. The usage of high grade components allow us to offer a full two year warranty. We accept a copy of the sales receipt as valid warranty legitimation.
If you suspect that your product is faulty, please contact your local retailer. The warranty does
not cover damage caused by improper installation or maltreatment - replacement or repair in
such cases can only be carried out at the owner’s expense.
Audio AG does not accept claims for damages of any kind, especially consequential damage.
Liability is limited to the value of the Fireface 800. The general terms of business drawn up by
Audio AG apply at all times.
8. Appendix
RME news, driver updates and further product information are available on our website:
http://www.rme-audio.com
Distributor: Audio AG, Am Pfanderling 60, D-85778 Haimhausen, Tel.: (49) 08133 / 91810
Manufacturer:
IMM 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, TotalMix and Fireface are trademarks of RME Intelligent
Audio Solutions. Alesis and ADAT are registered trademarks of Alesis Corp. ADAT optical is a
trademark of Alesis Corp. Microsoft, Windows 98 and Windows 2000/XP are registered trademarks or trademarks of Microsoft Corp. Steinberg, Cubase and VST are registered trademarks
of Steinberg Media Technologies GmbH. ASIO is a trademark of Steinberg Media Technologies
GmbH. FireWire, the FireWire symbol and the FireWire logo are trademarks of Apple Computer,
Inc.
User's Guide Fireface 800 © RME
11
Copyright © Matthias Carstens, 12/2007. Version 2.9
Current driver version: W2k/XP: 2.79, Mac OS X: 2.60a, Firmware 2.66
Although the contents of this User’s Guide have been thoroughly checked for errors, RME can
not guarantee that it is correct throughout. RME does not accept responsibility for any misleading or incorrect information within this guide. Lending or copying any part of the guide or the
RME Driver CD, or any commercial exploitation of these media without express written permission from RME Intelligent Audio Solutions is prohibited. RME reserves the right to change
specifications at any time without notice.
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User's Guide Fireface 800 © RME
CE / FCC Compliance
CE
This device has been tested and found to comply with the limits of the European Council Directive on the approximation of the laws of the member states relating to electromagnetic compatibility according to RL89/336/EWG and RL73/23/EWG.
FCC
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
- Consult the dealer or an experienced radio/TV technician for help.
RoHS
This product has been soldered lead-free and fulfils the requirements of the RoHS directive.
ISO 9001
This product has been manufactured under ISO 9001 quality management. The manufacturer,
IMM Elektronik GmbH, is also certified for ISO 14001 (Environment) and ISO 13485 (medical
devices).
Note on Disposal
According to the guide line RL2002/96/EG (WEEE – Directive on Waste
Electrical and Electronic Equipment), valid for all european countries, this
product has to be recycled at the end of its lifetime.
In case a disposal of electronic waste is not possible, the recycling can
also be done by IMM Elektronik GmbH, the manufacturer of the Fireface.
For this the device has to be sent free to the door to:
IMM Elektronik GmbH
Leipziger Straße 32
D-09648 Mittweida
Germany
Shipments not prepaid will be rejected and returned on the original sender's costs.
User's Guide Fireface 800 © RME
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User's Guide Fireface 800 © RME
User's Guide
Fireface 800
Installation and Operation - Windows
User's Guide Fireface 800 © RME
15
9. Hardware Installation
Desktop Computer
• Use the power cord to connect the Fireface with any suitable power outlet.
• Connect computer and Fireface using the supplied 6-pin FireWire cable (IEEE1394a). In
case your computer does not have any FireWire port, PCI-cards providing multiple FireWire
ports can be added easily. FireWire cards are available in your local computer shop.
• Power on the computer. Switch on the Fireface when Windows shows the desktop.
Notebook
• Use the power cord to connect the Fireface with any suitable power outlet.
• Connect computer and Fireface using the supplied 6-pin FireWire cable (IEEE1394a). In
case your notebook does not have any FireWire port, CardBus-cards can be used to add
them. In case your notebook does not have a 6-pin jack, or did not include a 6-pin to 4-pin
adapter: such adapters are available in your local computer store, also as complete cable 4pin to 6-pin.
• Power-on the notebook. Switch on the Fireface when Windows shows the desktop.
10. Driver and Firmware
10.1 Driver Installation
After the Fireface has been switched on, (see 9. Hardware Installation) the
green arrow symbol appears in the task bar (dialog Remove hardware)
because Windows has detected an external hardware.
Insert the RME Driver CD into your CD-ROM drive, and follow further instructions which appear
on your computer screen. The driver files are located in the directory \Fireface W2k on the
RME Driver CD.
Windows now installs the driver of the Fireface 800 and registers it as a new audio device in the
system. After a reboot, the symbols of mixer and Settings dialog will appear in the task bar (see
above). The red Host error LED extinguishes.
In case the warning messages 'Digital signature not found', 'Do not install driver', 'not certified
driver' or similar come up: Don't listen to Microsoft, listen to us and continue with the installation.
In case the Hardware Wizard does not show up automatically after installation of the card,
do not attempt to install the drivers manually! An installation of drivers for non-recognized
hardware will cause a blue screen when booting Windows!
Possible reasons why a Fireface is not found automatically:
• The FireWire port is not active in the system (drivers of the FireWire PCI or CardBus card
have not been installed)
• The FireWire cable is not, or not correctly inserted into the socket
• No power. After switching the Fireface on, at least the red Host error LED has to be lit.
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User's Guide Fireface 800 © RME
10.2 Driver Update
RME driver updates often include a new fireface.inf file. To prevent Windows 2000/XP from
using an old fireface.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
Fireface 800/Properties /Driver< you'll find the 'Update Driver' button. Select 'Install from a list
or specific location (advanced)', click 'Next', select 'Don't search I will choose the driver to
install', click 'Next', then 'Have Disk'. Now point to the driver update's directory.
This method also allows to install older drivers than the currently installed ones.
10.3 Deinstalling the Drivers
A deinstallation of the Fireface's driver files is not necessary – and not supported by Windows
anyway. Thanks to full Plug & Play support, the driver files will not be loaded after the hardware
has been removed. If desired these files can then be deleted manually.
Unfortunately Windows Plug & Play methods do not cover the additional autorun entries of TotalMix, the Settings dialog, and the registration of the ASIO driver. These entries can be removed from the registry by a software deinstallation request. This request can be found (like all
deinstallation entries) in Control Panel, Software. Click on the entry 'RME Fireface'.
10.4 Firmware Update
The Flash Update Tool updates the firmware of the Fireface 800 to the latest version. It requires
an already installed driver.
Start the program fireface_fut.exe. The Flash Update Tool displays the current revision of the
Fireface's frimware, and whether it needs an update or not. If so, then simply press the 'Update'
button. A progress bar will indicate when the flash process is finished (Verify Ok).
If more than one Fireface is installed, all units can be flashed by changing to the next tab and
repeating the process.
After the update the unit needs to be reset. This is done by powering down the Fireface for a
few seconds. Attention: the Fireface should not be switched off for less than 5 seconds, because Windows completely unloads the driver, which takes some time to finish.
A reboot of the computer is not necessary.
When the update fails (status: failure), the unit's second BIOS will be used from the next cold
boot on (Secure BIOS Technology). Therefore the unit stays fully functional. The flash process
should then be tried again on a different computer.
User's Guide Fireface 800 © RME
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11. Configuring the Fireface
11.1 Settings dialog - General
Configuration of the Fireface 800 is done via its own settings dialog. The panel 'Settings' can be
opened:
• by clicking on the fire symbol in the Task Bar's system tray
The mixer of the Fireface 800 (TotalMix) can be opened:
• by clicking on the mixer icon in the Task Bar's system tray
The hardware of the Fireface 800 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
• Level of analog I/Os
• Configuration of digital I/Os
• Synchronization behaviour
• State of input and output
• Current sample rate
• Latency
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 playback devices
open, which means that any new
settings might not be applied immediately.
The status displays at the bottom of
the dialog box give the user precise
information about the current status
of the system, and the status of all
digital signals. SyncCheck indicates
whether there is a valid signal (Lock, No Lock) for each input (Word Clock, ADAT1, ADAT2,
SPDIF), or if there is a valid and synchronous signal (Sync). The AutoSync Ref display shows
the input and frequency of the current sync source.
The string Errors is displayed only when transmission errors of PCI/FireWire are detected. The
display will be reset on any start of a playback/record, i.e. set to zero and is thus no longer visible. More information can be found in chapter 37.3.
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User's Guide Fireface 800 © RME
Buffer Size
The setting Buffer Size determines the latency between incoming and outgoing ASIO and GSIF
data, as well as affecting system stability (see chapter 13/14). Under Windows MME this setting
determines the DMA buffer size (see chapter 12.3). GSIF and MME can be set from 48 to 256
samples. Above 256, only ASIO is effected
Inputs
Input selection for the channels 1, 7 and 8. Channel 1 can be the front instrument input, or the
rear TRS jack, or both simultaneously. Channel 7/8 can be the front microphone input, or the
rear TRS jack, or both simultaneously.
Limit Bandwidth
Allows to reduce the amount of bandwidth used on the FireWire bus. See chapter 11.4.
All channels (default) activates all 28 input and output channels.
Analog + SPDIF + ADAT1 disables channels 21–28 (ADAT2).
Analog + SPDIF activates all 10 analog channels plus SPDIF.
Analog 1-8 activates only the first eight analog channels.
SPDIF In
Defines the input for the SPDIF signal. 'Coaxial' relates to the RCA
socket, 'ADAT2' to the second optical
TOSLINK input.
SPDIF Out
The SPDIF output signal is constantly
available at the phono plug. After
selecting 'ADAT2' it is also routed to
the second optical TOSLINK output.
For further details about the settings
‘Professional’, ‘Emphasis’ and ‘NonAudio’, please refer to chapter 29.2.
SPDIF Freq.
Displays the sample rate of the signal
at the SPDIF input.
Input Level
Defines the reference level for the
rear analog inputs 1-8.
Output Level
Defines the reference level for the
rear analog outputs 1-8.
Phantom Power
Phantom power (48V) can be selected for each microphone input seperately.
Instrument Options
Drive activates 25 dB additional gain for maximum sustain and brute distortion.
Lim. activates a soft-limiter with a threshold of –10 dBFS. Note: The Limiter can only be
switched off with input selection Front.
Speaker Emulation removes low frequency noise and cuts off higher frequencies.
User's Guide Fireface 800 © RME
19
Word Clock Out
The word clock output signal usually equals the current sample rate. Selecting Single Speed
causes the output signal to always stay within the range of 32 kHz to 48 kHz. So at 96 kHz and
192 kHz sample rate, the output word clock is 48 kHz.
SyncCheck
SyncCheck indicates whether there is a valid signal (Lock, No Lock) for each input (Word clock,
ADAT1, ADAT2, SPDIF), or if there is a valid and synchronous signal (Sync). The AutoSync Ref
display shows the input and frequency of the current sync source.
Options
Check Input verifies the current digital input signal against the settings in the record program.
When de-activated a recording will always be allowed, even with non-valid input signals. Check
Input is valid for MME only.
SyncAlign guarantees synchronous channels when using MME multitrack software. This option
should only be switched off in case the used software does not work correctly with SyncAlign
activated.
TMS activates the transmission of Channel Status data and Track Marker information of the
SPDIF input.
With Interleaved activated, WDM devices can be used as 8-channel devices (see chapter 12.5).
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. Sync Ref.
Used to pre-select the desired clock
source. If the selected source isn't
available, the unit will change to the
next available one. The current clock
source and sample rate is displayed
in the AutoSync Ref display.
The automatic clock selection checks
and changes between the clock
sources Word Clock, ADAT1,
ADAT2, SPDIF, LTC and Video
(LTC/Video when using the optional
TCO module).
System Clock
Shows the current clock state of the
Fireface 800. The system is either
Master (using its own clock) or Slave
(see AutoSync Ref).
Read Flash Memory
A click on this button causes all settings to change to the ones stored in the flash memory of the
Fireface.
Store in Flash Memory
A click on this button transmits all current settings into the flash memory of the Fireface. Those
settings then become active directly after power-on, and also in stand-alone operation.
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User's Guide Fireface 800 © RME
11.2 Settings dialog - DDS
Usually soundcards and audio interfaces generate their internal clock (master mode) by a
quartz. Therefore the internal clock can be set to 44.1 kHz or 48 kHz, but not to a value in between. SteadyClock, RME's sensational Low Jitter Clock System, is based on a Direct Digital
Synthesizer (DDS). This superior circuitry can generate nearly any frequency with highest precision.
DDS has been implemented into the Fireface with regard to the needs of professional video
applications, as well as to maximum flexibility. The dialog DDS includes both a list of typical
video frequencies (so called pull up/pull down at 0.1% and 4%) and two faders, which allow to
freely change the basic sample rate in steps of 1 Hz (!).
The DDS dialog requires the Fireface to be in clock mode Master! The frequency setting will
only be applied to this one specific Fireface!
Changing the sample rate in bigger steps during record/playback often results in a loss of
audio, or brings up warning messages of the audio software. Therefore the desired sample
rate should be set at least coarsely before starting the software.
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 activated 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 activate 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).
User's Guide Fireface 800 © RME
21
Application examples
DDS allows for a simultaneous change of speed and tune during record and playback. From
alignment to other sources up to creative effects – everything is possible..
DDS allows to intentionally de-tune the complete DAW. This way, the DAW can match instruments which have a wrong or unchangeable tuning.
DDS allows to define a specific sample rate. This feature can be is useful in case the system
randomly changes the sample rate – for unknown reasons. It also prevents a change from Double Speed (96 kHz) to Single Speed (48 kHz), which would cause configuration and routing
problems by the changed amount of ADAT channels.
11.3 Clock Modes - Synchronization
In the digital world, all devices must be either ‘Master’ (clock source) or ‘Slave’ synchronized to
a master. Whenever several devices are linked within a system, there must always be a single
master clock. The Fireface's intelligent clock control is very user-friendly, being able to switch
between clock modes automatically. Selecting AutoSync will activate this mode.
In AutoSync mode, the system constantly scans all digital inputs for a valid signal. If any valid
signal is found, the Fireface switches from the internal quartz (System Clock – Mode displays
'Master') to a clock extracted from the input signal (System Clock - Mode displays 'Slave'). The
difference to a usual slave mode is that whenever the clock reference fails, the system will
automatically use its internal clock and operate in 'Master' mode.
AutoSync guarantees that record and record-while-play will always work correctly. In certain
cases however, e.g. when the inputs and outputs of a DAT machine are connected directly to
the Fireface 800, AutoSync may cause feedback in the digital carrier, so synchronization breaks
down. To remedy this, switch the Fireface’s clock mode over to 'Master'.
Remember that a digital system can only have one master! If the Fireface’s clock mode is
set to 'Master', all other devices must be set to ‘Slave’.
The Fireface's ADAT optical and SPDIF inputs operate simultaneously. Because there is no
input selector however, the Fireface 800 has to be told which of the signals is the sync reference (a digital device can only be clocked from a single source). 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.
The Fireface has been equipped with an automatic clock source selection, which adopts the
first available input with a valid digital signal as the clock reference input. If none of the inputs
are receiving a valid signal, the card automatically switches clock mode to ‘Master’. The input
currently used as sync reference is shown in the AutoSync Ref status field, together with its
sample frequency.
To cope with some situations which may arise in studio practice, defining a sync reference is
essential. One example: An ADAT recorder is connected to the ADAT input (ADAT immediately
becomes the AutoSync source) and a CD player is connected to the SPDIF input. Try recording
a few samples from the CD and you will be disappointed. Few CD players can be synchronized.
The samples will inevitably be corrupted, because the signal from the CD player is read with the
(wrong) clock from the ADAT i.e. out of sync. In this case, Pref Sync Ref should be temporarily
set to SPDIF.
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User's Guide Fireface 800 © RME
If several digital devices are to be used simultaneously in a system, they not only have to operate with the same sample frequency but also be synchronous with each other. This is why digital systems always need a single device defined as ‘master’, which sends the same clock signal
to all the other (‘slave’) devices.
RME’s exclusive SyncCheck technology (first implemented in the
Hammerfall) enables an easy to use
check and display of the current
clock status. SyncCheck indicates
whether there is a valid signal (Lock,
No Lock) for each input (Word
Clock, ADAT1, ADAT2, SPDIF), or if
there is a valid and synchronous
signal (Sync). The AutoSync Ref
display shows the input and frequency of the current sync source
(see chapter 37.1).
In practice, SyncCheck provides the
user with an easy way of checking
whether all digital devices 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 Fireface
800 is not only capable of handling
standard frequencies, but also any
sample rate between 28 and 200 kHz. Even the word clock input, most often used in varispeed
operation, allows any frequency between 28 kHz and 200 kHz.
At 88.2 or 96 kHz: If the ADAT input has been selected in Pref Sync Ref, the sample frequency
shown in the SPDIF Freq. field differs from the one shown in AutoSync Ref. The unit automatically switches to S/MUX mode here, because ADAT optical inputs and outputs are only specified up to 48 kHz. Data from/to a single input/output is spread over two channels, the internal
frequency stays at 44.1 or 48 kHz. In such cases, the ADAT sample frequency is only half the
SPDIF frequency.
11.4 Limit Bandwidth
This option allows to reduce the amount of bandwidth used on the FireWire bus. A typical example is the use of the Fireface with a laptop. Only in rare cases both ADAT ports are needed,
in many cases even both stay unused. The option Analog+SPDIF will reduce the amount of
constantly (!) transferred data from around 5 MByte (10 in both directions) to only 2 MByte (4 in
both directions). The FireWire connection will be more stable, reliable and robust, leaving additional bandwidth for other devices. At the same time the CPU and system load is reduced, as
less channels have to be processed and to be transferred. In TotalMix, the deactivated software
playback channels will be replaced with empty plates. More details are found in chapter 37.4.
Available Settings
All channels (default) activates all 28 input and output channels.
Analog + SPDIF + ADAT1 disables channels 21–28 (ADAT2).
Analog + SPDIF activates all 10 analog channels plus SPDIF.
Analog 1-8 activates only the first eight analog channels.
User's Guide Fireface 800 © RME
23
12. Operation and Usage
12.1 Playback
The Fireface 800 can play back audio data in supported formats only (sample rate, bit resolution). Otherwise an error message appears (for example at 22 kHz and 8 bit).
In the audio application being used, Fireface 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 all system sounds off (via >Control Panel /Sounds<). Also
Fireface should not be the Preferred Device for playback, as this could cause loss of synchronization and unwanted noises. If you feel you cannot do without system sounds, you should consider buying a cheap Blaster clone and select this as Preferred Device in >Control Panel
/Multimedia /Audio<.
The screenshot shows a
typical configuration dialog 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 buffers 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 similar), be sure
to activate the checkbox ‘Get position from audio driver’.
The Fireface’s ADAT optical interfaces support sample rates of up to 96 kHz using a standard
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 the four stereo pairs of the device ADAT1 are available
• The channels of the device ADAT2 are no longer available
This kind of implementation allows a problem-free usage of both ADAT ports in Single and Double Speed, as the routing for ADAT1 doesn't change. However, the hardware spreads the data
differently:
• Channel 1 is transmitted via channels 1 and 2, channel 2 via 3 and 4 etc.
• The ADAT2 port transmits channels 5 to 8
Please refer to the diagram in chapter 18.2. Routing for record and playback is identical.
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User's Guide Fireface 800 © RME
12.2 DVD-Playback (AC-3/DTS)
AC-3 / DTS
When using popular DVD software players like WinDVD and PowerDVD, their audio data
stream can be sent to any AC-3/DTS capable receiver using the Fireface's SPDIF output. For
this to work, the WDM* SPDIF device of the Fireface 800 has to be selected in >Control Panel/
Sounds and Multimedia/ Audio<. Also check 'use preferred device only'.
supported)
The DVD software's audio properties now show the options 'SPDIF Out', 'Use SPDIF' or 'activate SPDIF output'. When selecting these, the software will transfer the non-decoded digital
multichannel data stream to the Fireface.
This 'SPDIF' signal sounds like chopped noise at highest level. Therefore the Fireface 800
automatically sets the non-audio bit within the digital data stream, to prevent most SPDIF receivers from accepting the signal, and to prevent any attached equipment from being damaged.
Multichannel
PowerDVD and WinDVD can also operate as software decoder, sending a DVD's multichannel
data stream directly to the analog outputs of the Fireface. All modes are supported, from 2 to 8
channels, at 16 bit resolution and up to 192 kHz sample rate. Up to 48 kHz, playback is also
possible via the ADAT outputs of the Fireface.
For multichannel playback, a WDM streaming* device, or the correct** MME playback device of
the Fireface 800 has to be selected in >Control Panel/ Sounds and Multimedia/ Audio<. Also
check 'use preferred device only'. Additionally the loudspeaker setup, found under >Volume/
Speaker Settings/ Advanced< has to be changed from Stereo to 5.1 Surround.
PowerDVD's and WinDVD's audio properties now list several multichannel modes. If one of
these is selected, the software sends the decoded analog multichannel data to the Fireface.
* The option Interleaved in the Settings dialog has to be activated.
** Certain MME playback devices of the Fireface support multichannel playback (Interleaved) with 2, 4, 6 and 8 chan-
nels:
-- Fireface Analog (1+2): Up to 192 kHz, playback on the analog outputs 1-8
-- Fireface ADAT1 (1+2): Up to 48 kHz, playback on channels 13-20
-- Fireface ADAT2 (1+2): Up to 48 kHz, playback on channels 21-28
Thanks to TotalMix, the software's playback channels can be routed to any hardware outputs.
Therefore a playback at 96 kHz using the analog outputs can also be done via both ADAT
ports. This also removes a limitation in some software (like PowerDVD 5), which always uses
channel 1 as first channel of a multichannel playback.
The typical channel assignment for surround playback is:
1 - Left
2 - Right
3 - Center
4 - LFE (Low Frequency Effects)
5 - SL (Surround Left)
6 - SR (Surround Right)
Note 1
: Selecting the Fireface to be used as system playback device is against our recommendations on system optimization, as professional cards are not specialized to play back system
sounds, and shouldn't be disturbed by system events. To prevent this, be sure to re-assign the
selection after usage, or to disable any system sounds (tab Sounds, scheme 'No audio').
: The DVD player will be synced backwards from the Fireface. This means when using
Note 2
AutoSync and/or word clock, the playback speed and pitch follows the incoming clock signal.
(*In some cases MME is not
User's Guide Fireface 800 © RME
25
12.3 Low Latency under MME (Buffer Size Adjustment)
Under Windows 95 or 98, the MME buffer size was nothing to worry about. Latencies below 46
ms were not possible. Meanwhile both computers and operating systems have become much
more powerful, and with Windows 2000/XP latencies far lower can be used. SAWStudio and
Sonar allowed to use such low settings from the start. Sequoia was updated in version 5.91,
WaveLab in version 3.04.
In the Settings dialog the DMA buffer size is set using the list box Buffer Size (Latency). Values between 48 and 256 samples are available. This setting is valid for MME, ASIO and GSIF
at the same time, with values above 256 only effecting ASIO. Our test computers allow to use
even 48 samples without clicks, but will show a higher basic CPU load then. Therefore we recommend to use at least 64 samples. Please note that this setting only defines the buffer size of
the hardware. The true and effective latency is configured within the MME application!
Attention: the DMA buffers must not be larger than the application's buffers. Playback will
be stuttering and audio will be distorted.
Example: when you set the Fireface to 256 you can't use 128 in any program. But setting the
MME buffer to 128 allows to use 128 and all higher values within the software.
Please also note that this is a you're welcome to try feature. We can't guarantee that you will be
able to use 3 or 6 ms with MME. Simply check out by yourself which lowest setting your system
and software allows. Some motherboards with insufficient PCI bandwidth (especially VIA
based) suffer from crackling at settings below 512. Be sure to set the buffer size to 512 or
higher in such a case (or get yourself a new motherboard…).
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User's Guide Fireface 800 © RME
12.4 Notes on WDM
The driver offers two devices per stereo pair, like Fireface Analog (1+2) and Fireface Analog
(1+2) MME.
Fireface Analog (1+2)
The devices having no MME at the end are WDM Streaming Devices. WDM Streaming is Microsoft's current driver and audio system, directly embedded into the operating system. WDM
Streaming is nearly unusable for professional music purposes, as all data is processed by the
so called Kernel Mixer, causing a latency of at least 30 ms. Additionally, WDM can perform
sample rate conversions unnoticed, cause offsets between record and playback data, block
channels unintentionally and much more. Therefore, for general operation, RME recommend
not to useWDM devices.
WDM Streaming also replaces the former DirectSound. Synthesizers and Samplers, which
achieved latencies below 10 ms using DirectSound, are forced to use WDM in Windows XP.
And now operate at high latency. Meanwhile most of these programs support ASIO as low latency driver interface.
Several programs do not offer any direct device selection. Instead they use the playback device
selected in Windows under <Control Panel/ Sounds and Multimedia/ Audio>. Such software
often requires the special functions provided by WDM, and therefore will operate better when
using a WDM device. Please note that selecting the Fireface to be used as system playback
device is against our recommendations, as professional interfaces should not be disturbed by
system events.
The program Sonar from Cakewalk is unique in many ways. Sonar uses the so called WDM
Kernel Streaming, bypassing the WDM mixer, thus achieves a similar performance as ASIO
and our MME driver (see below). Because of the driver's multichannel streaming ability (option
Interleaved, see chapter 12.5), Sonar not only finds the stereo device mentioned above, but
also the 8-channel interleaved devices, and adds the channel number at the end:
Fireface Analog (1+2) is the first stereo device
Fireface Analog (3+4) is the next stereo device
Fireface Analog (1+2) 3/4 are the channels 3/4 of the first 8-channel interleaved device.
We recommend to not use these special interleaved devices. Also note that it is not possible to
use one stereo channel twice (the basic and the interleaved device), even with different applications.
Information on multichannel WDM is found in chapter 12.5.
Fireface Analog (1+2) MME
The devices with the MME suffix bypass the Windows Kernel Mixer. This way, they achieve
nearly the same performance as RME's previous (true) MME drivers. Also their behaviour (offsets, start/stop, multi-client) is identical. So when not using GSIF or ASIO, MME should be your
preferred choice.
A small note on ASIO and GSIF: these drivers are completely independent from WDM Streaming. They work and perform the same as our previous 'just WDM' drivers.
User's Guide Fireface 800 © RME
27
12.5 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, MME and GSIF can be used simultaneously. The
use of multi-client operation requires to follow two simple rules:
• Multi-client operation requires identical sample rates!
I.e. it is not possible to use one software with 44.1 kHz and the other with 48 kHz.
• Different software can not use the same channels at the same time.
If for example Cubase uses channels 1/2, this playback pair can't be used in Gigasampler/Studio (GSIF) nor under MME (WaveLab etc.) anymore. This is no limitation at all, because
TotalMix allows any output routing, and with this a playback of multiple software on the same
hardware outputs. Note that the inputs can be used at the same time, as the driver sends the
data to all applications simultaneously.
ASIO-Multiclient
RME audio interfaces support ASIO multi-client operation. It is possible to use more than one
ASIO software at the same time. Again the sample rate has to be identical, and each software
has to use its own playback channels. Again the inputs can be used simultaneously.
RME's sophisticated tool DIGICheck is an exception to this rule. It operates like an ASIO host,
using a special technique to access playback channels already occupied. Therefore DIGICheck
is able to analyse and display playback data from any software, no matter which format the
software uses.
Multi-Client and Multi-Channel using WDM
The WDM Streaming devices of our driver can operate as usual stereo devices, or as 8-channel
devices. The option Interleaved in the Settings dialog determines the current mode.
Interleaved not active: The WDM devices operate as usual stereo devices. The multi-client operation works as described above with WDM, ASIO, MME and GSIF.
Interleaved active: The WDM devices can also be used as 8-channel devices. Unfortunately the
Kernel Mixer, active with any WDM playback, then always occupies and blocks 8 channels at
once, even when WaveLab or the Media Player perform just a stereo playback (2 channels).
So:
If any stereo pair within an 8-channel group is used, the whole 8-channel group is blocked.
As a result, no second stereo pair of this group can be used, neither with ASIO, MME nor
GSIF.
The Fireface provides three 8-channel groups: the analog inputs 1 to 8 and the two ADAT ports.
Starting MME, ASIO or GSIF playback on any of the stereo pairs of an 8-channel group prior to
starting a WDM playback will prevent the Kernel Mixer from opening the 8-channel device, as
two of its channels are already in use. The Kernel Mixer then automatically reverts to open a
stereo device for a stereo playback.
Software which is capable of using more than one MME device usually uses the (WDM-) MME
devices. A surround playback via Media Player should be possible without the need of reconfiguration. That's why the mode Interleaved is activated in the Settings dialog by default.
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User's Guide Fireface 800 © RME
12.6 Digital Recording
Unlike analog soundcards which produce empty wave files (or noise) when no input signal is
present, digital interfaces always need a valid input signal to start recording.
Taking this into account, RME have included three unique features in the Fireface 800: a comprehensive I/O signal status display showing sample frequency, lock and sync status in the
Settings dialog, status LEDs for each input, and the protective Check Input function.
If a 48 kHz signal is fed to the input and the application is set to 44.1 kHz, Check Input stops the
system from recording. This prevents faulty takes, which often go unnoticed until later on in the
production. Such tracks appear to have the wrong playback rate - the audio quality as such is
not affected.
The sample frequency shown in the Settings dialog (see chapter 11.1, screenshot Settings) is
useful as a quick display of the current configuration (the board itself and all connected external
equipment). If no sample frequency is recognized, it will read ‘No Lock’.
This way, configuring any suitable audio application for digital recording is simple. After selecting the required input, Fireface 800 displays the current sample frequency. This parameter can
then be changed in the application’s audio attributes (or similar) dialog.
The screenshot on the right shows a typical dialog 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 lower 8 bits (and therefore any
signals about 96dB below maximum level) are
lost entirely. On the other hand, there is nothing
to gain from recording a 16-bit signal at 24-bit
resolution - this would only waste precious space
on the hard disk.
It often makes sense to monitor the input signal or send it directly to the output. This can be
done at zero latency using TotalMix (see chapter 31).
An automated control of real-time monitoring can be achieved by Steinberg’s ASIO protocol
with our ASIO 2.0 drivers and all ASIO 2.0 compatible programs. When 'ASIO Direct Monitoring'
has been switched on, the input signal is routed in real-time to the output whenever a recording
is started (punch-in).
User's Guide Fireface 800 © RME
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12.7 Analog Recording
For recordings via the analog inputs the corresponding record device has to be chosen (Fireface Analog (x+x)). Apart from the three reference levels, the Fireface has no means to change
the input level. This would make no sense for the digital inputs, but also for the analog inputs
one can do without it. It doesn't matter if the Fireface is operated at a mixing desk or a multichannel mic preamp, in either case the level can be controlled directly at the source to match
the Fireface's sensitivity perfectly.
The input sensitivity of the frontside analog inputs can be adjusted using their Gain pots to
match any external source perfectly, see chapter 27.2.
13. Operation under ASIO 2.0
13.1 General
Start the ASIO software and select ASIO Fireface as the audio I/O device. The 'ASIO system
control' button opens the Fireface's Settings dialog (see chapter 11 / 22, Configuration).
Fireface 800 supports
'ASIO Direct Monitoring'
(ADM). Please note that
currently Nuendo,
Cubase and Logic either do not support
ADM completely or
error-free.
When the sample frequency is set to 88.2 or
96 kHz, the number of
ASIO ADAT channels is
reduced to 4 per ADAT
port. At a sample rate of
176.4 or 192 kHz (Quad
Speed Mode) the ADAT
I/Os are no longer
available. Nevertheless
they will send out a
synchronized ADAT signal at a quarter of the sample rate. The ASIO driver corrects the number
of channels when changing from Single to Double or Quad Speed. The channel routing of both
ADAT ports is shown in chapter 18.1 and 37.5.
Some programs do not recognize the dynamic change of the number of ADAT channels, therefore do not operate correctly in Double and Quad Speed mode. A workaround is to use DDS.
After having set the desired sample rate, the ASIO software recognizes the correct number of
I/O channels directly when started.
In case of a drift between audio and MIDI, or in case of a fixed deviation (MIDI notes placed
close before or behind the correct position), the settings in Cubase/Nuendo have to be
changed. At the time of print, the best settings are the use of emulated MIDI driver/ports, and
the activation of the option 'Use System Timestamp'.
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