User's Guide HDSP AES-32 - RME

Quick Boot
All the card's settings described below are stored in a hardware memory, and are loaded immediately
after a power-on of the computer. In clock mode Master even the last used sample
rate is set. Directly after switching on the computer, a stable and predictable clock state is found
at the HDSP AES-32's outputs. This advanced technology completely eliminates disturbing
noises and clock network problems during power-up or re-boot.
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. Frequency
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 from the
AES/EBU input signal.
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.
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).
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).
System Clock
Shows the current clock state of the HDSP system. The system is either Master (using its own
clock) or Slave (see Pref. Sync Ref).
Output Format
Double Speed: Sample rates in the range of 64 kHz to 96 kHz can also be transmitted using the
standard 48K frame. Note that when selecting Double Wire the number of output channels is
reduced to 8.
Quad Speed: Sample rates in the range of 128 kHz to 192 kHz can also be transmitted using
either the standard 48K frame, or the 96K frame. Note that when selecting Double Wire the
number of output channels is reduced to 8. When selecting Quad Wire the number of remaining
output channels is 4.
For further details about the settings ‘Professional’, ‘Emphasis’ and ‘Non-Audio’, please refer to
chapter 22.2.
14 User's Guide HDSP AES-32 © RME