User Manual

User's Guide Fireface 800 © RME
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9.8 Analog Recording
For recordings via the analog inputs the corresponding record device has to be chosen (Fire-
face 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 mul-
tichannel 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 14.
10. Using more than one Fireface 800
The current driver supports up to three Fireface 800. All units have to be in sync, i.e. have to
receive valid sync information (either via word clock or by using AutoSync and feeding syn-
chronized signals).
• If one of the Firefaces is set to clock modus Master, all others have to be set to clock mode
AutoSync, and have to be synced from the Master, for example by feeding word clock.
• TotalMix is part of the hardware of each Fireface. Up to three mixers are available, but
these are seperated and can't interchange data. Therefore a global mixer for all units is not
possible.
• If all units are fed with a synchronous clock, i.e. all units show Sync in their Settings dialog,
all channels can be used at once. This is especially easy to handle with ASIO, as the ASIO
driver presents all units as one.
• When using all channels of more than one Fireface 800, a FireWire 800 interface is neces-
sary. FireWire 400 will usually not suffice for operating moe than one Fireface.
• When using only one Fireface 800, a FireWire 800 interface does not improve performance,
and does not help to achieve lower latency. But connecting a hard drive to the Fireface (Hub
functionality), FireWire 800 will immediately increase performance and reliablility.