Specifications

1.36

Operation Manual

Revision 1.05Prism Sound Orpheus

6.1.1 Unit and Global settings

The upper area of the Orpheus Control Panel contains Unit Settings and Global Settings. Unit

Settings are applied only to the Orpheus unit which the Control Panel is currently assigned to control,

whereas Global Settings apply to all connected Orpheus units as a whole.

The upper area also contains buttons for loading and saving Orpheus configurations, and for

accessing the on-line help.

Unit Settings

The topmost control in the Unit Settings panel is the Unit Selector. This selects which Orpheus unit

is controlled by the rest of the Unit Settings panel, and by the tabbed panels in the lower part of the

Control Panel (the Global Settings panel controls all connected units, and is the only part of the

Control Panel not affected by the Unit Selector). The Unit Selector is a drop-list which can be

dropped by clicking the down-arrow at the right-hand-side, presenting a list of all the connected

devices for selection. The name of the selected device is then displayed, along with the device type

(e.g. Orpheus, in the high-lit area on the right).

By default, the name of each device is its GUID (Globally Unique Identification number), but this can

be changed to a more friendly name (Windows only) by clicking in the left-hand side of the selector

and typing in a new name. This doesn't change the unit's GUID, of course - it only associates a

friendly name with the GUID whenever the OS or Control Panel applet sees the unit.

Below the Unit Selector is the Identify button. This can be latched on or off by clicking it. When it's

on (high-lit red) the LED in the standby switch of the currently-selected unit flashes. This helps to

identify each unit in a multi-unit system.

The Sync Source control allows each unit's reference synchronization source to be selected. For

more details, see the Synchronization section.

NOTE: If an external sync source such as DI or wordclock is selected, but is either absent or

at a different rate from the selected sample rate, all audio is muted. If the reference is later

applied at the appropriate rate, audio is re-enabled.

The FP Meters control allows the front panel meters to be switched between the analogue and

S/PDIF inputs, and the analogue and S/PDIF outputs. An additional selection, 'Follow Global', allows

multiple units' meters to be switched using a single control in the Global Settings. For more

information, see the Metering system description. Note that right-clicking on the FP Meters control

(control-clicking on one-button Macs) brings up a brightness control for the Orpheus front panel - four

different brightness settings can be selected to suit ambient lighting conditions.

The Clock Out control can be used to cause the unit's wordclock output to produce base clock or

256x clock instead of wordclock if required. For more details, see the Synchronization section.

A two-channel sample-rate converter (SRC) can be configured in the S/PDIF input path, or in the

S/PDIF output path, or can be disabled, using the SRC control.

ADAT inputs, or ADAT outputs, or both, can be enabled using the ADAT control. By default, ADAT

ports are disabled to ease load on the host computer. ADAT Direct mode is a special mode which