Analog Recording; Operation Under Asio; General; Known Problems - RME Audio Multiface User Manual

12.6 Analog Recording

For recordings via the analog inputs the corresponding record device has to be chosen (HDSP
Analog (x+x)). Apart from the three reference levels, the Multiface 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 Multiface is operated at a mixing desk or a multichan-
nel mic preamp, in either case the level can be controlled directly at the source to match the
Multiface's sensitivity perfectly.
The input sensitivity of the analog inputs can be changed through internal jumpers to meet the
most often used studio levels, see chapter 35.

13. Operation under ASIO 2.0

13.1 General

Start the ASIO software and select ASIO Hammerfall DSP as the audio I/O device. The 'ASIO
system control' button opens the HDSP's Settings dialog (see chapter 10 / 20, Configuration).
Hammerfall DSP supports
ASIO Direct Monitoring
(ADM). Please note that
currently Nuendo, Cubase
and Logic either do not
support ADM completely
or error-free.
Using emulated MIDI
drivers often causes a 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 appear. We recommend to deactivate all PlugIns to
verify that these are not the reason for such effects.
Additional hard disk controllers, both on-board and PCI based, aften violate the PCI specs. To
achieve the highest throughput they hog the PCI bus, even in their default setting. Thus when
working with low latencies heavy drop outs (clicks) are heard. Try to solve this problem by
changing the default setting of the controller (for example by reducing the 'PCI Bus Utilization').
Another common source of trouble is incorrect synchronization. ASIO does not support asyn-
chronous operation, which means that the input and output signals not only have to use the
same sample frequency, but also have to be in sync. All devices connected to the Hammerfall
DSP must be properly configured for Full Duplex operation. As long as SyncCheck (in the Set-
tings dialog) only displays Lock instead of Sync, the devices have not been set up properly!
User's Guide HDSP System Multiface © RME
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