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User's Guide HDSPe MADI FX © RME

Buffer Size

The setting Buffer Size determines the latency between incoming and outgoing ASIO and WDM

data, as well as affecting system stability (see chapter 13.1).

WDM Devices

Not before Vista the OS had been capable to handle more than 32 WDM stereo devices. There-

fore under W2k/XP it often makes sense to intentionally limit their number. Under Windows 7 a

setting of ‘3’ enables AES, Phones and the first eight MADI channels as WDM devices, which

saves a lot resources compared to the default setting of ‘26’.

Clock Mode

Sample Rate

Sets the currently used sample rate. Offers a central and comfortable way of configuring the

sample rate of all WDM devices to the same value, as since Vista the audio software is no

longer allowed to set the sample rate. However, an ASIO program can still set the sample rate

by itself.

During record/playback the selection is greyed out, so no change is possible.

Clock Source

The unit can be configured to use its own clock (Internal = Master), or one of the input signals

(Word, MADI, AES, Sync In). If the selected source isn't available (No Lock), the unit will

change to the next available one (this behaviour is called AutoSync). If none is available then

the internal clock is used. The current clock source is displayed as Current.

Pitch

More information on Pitch is available in chapter 11.2.

Output Format

AES

The channel status of the AES output signal can be set to Consumer or Professional. For fur-

ther details please refer to chapter 23.2.

MADI 1/2/3

Defines the format of the MADI output signal. MADI can be a 56 or 64 channel signal.

96 kHz

Word

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.

MADI 1/2/3

Sample rates higher than 48 kHz can be transmitted using the normal 48K Frame, or using a

native 96K Frame at the card's output.

Options

EQ+D for Record

Switches EQ and Dynamics of all input channels into the recording path. In case Loopback has

been activated the EQ and Dynamics of the Output channel are within the recording path. See

also chapter 27.5.

Word Clock In Term.

Checking this option terminates the word clock input internally with 75 Ohms.