User`s guide

User's Guide HDSPe MADIface © RME

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 set-

ting (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 or 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) position.

11.3 Clock Modes - Synchronisation

AutoSync

AutoSync guarantees that normal record and record-while-play will always work correctly If no

valid input signal is found, the card automatically switches to clock mode ‘Master’. In certain

cases however, AutoSync may cause feedback in the digital carrier, so synchronization breaks

down. To remedy this, switch the clock mode to 'Master'.

Thanks to its AutoSync technique and lightning fast PLL, the HDSPe is not only capable of han-

dling standard frequencies, but also any sample rate between 28 and 200 kHz.

SyncCheck

If several digital devices are to be used simultaneously in a system, they not only have to oper-

ate with the same sample frequency but also be synchronous with each other. This is why digi-

tal systems always need a single device defined as ‘master’, which sends the same clock signal

to all the other (‘slave’) devices.

Remember that a digital system can only have one master! When the HDSPe’s clock mode

is set to Master, all other devices must be set to Slave.

SyncCheck serves as simple check and display tool of the current clock situation. It indicates

whether there is a valid signal (Lock, No Lock), or if there is a valid and synchronous signal

(Sync) at the MADI input.

In practice, SyncCheck provides the user with an easy way of checking whether all digital de-

vices 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.