Soft Limit; 13) Output Resolution; Signal Leds; Source To Analog Out - Apogee ROSETTA 800 User Manual

ROSETTA 800 – User's Guide
Navigating the Front Panel -
6) SOFT LIMIT – This button engages Soft Limit, Apogee's proprietary transient
limiting circuitry, on all 8 Analog inputs. Soft Limit transparently rounds transient
spikes in a manner similar to analog tape, allowing several more dB of signal to be
recorded onto the digital medium.
7) OUTPUT RESOLUTION – This button engages UV22HR, Apogee's proprietary
bit-resolution reduction algorithm, on all digital outputs. UV22HR should be applied
when 16-bit digital devices are connected to the Rosetta 800's Digital outputs, such
as DAT recorders or CD burners. By adding an algorithmically generated, inaudible
concentration of energy at around 22kHz, UV22HR preserves 24-bit resolution in a
16-bit digital signal.
13

8) SIGNAL LEDs

1) A/D OVER – These red LEDs indicate the occurrence of digital OVERs
(defined as 3 consecutive samples at full scale) in the A/D converter section.
2) DIGITAL OUT – These LEDs indicate the digital level of the source(s) routed
to the digital outputs.
3) ANALOG OUT – These LEDs indicate the digital level of the source(s) routed
to the analog outputs.
9) SOURCE TO ANALOG OUT – This parameter configures the second
available signal path by selecting the input source(s) routed to the analog outputs.
A total of eight channels may be routed, either entirely from one source or from
one digital source and the analog source. To select a digital source and the
Analog source simultaneously, toggle through the entire set of possible values
until both desired SOURCE TO ANALOG OUT values are lit. Assignment of each
of the 8 channels to a digital or analog source is accomplished (by pairs) with the
Advanced settings listed below:
SOURCE TO ANALOG OUT Advanced settings:
When two sources have been selected, the following Advanced settings become
available:
• To display current routing:
1) Press and hold the SOURCE TO ANALOG OUT button to display the current
configuration of analog and digital sources as indicated by the ANALOG
OUT LEDs. If the ANALOG OUT LED is on, the source for the corresponding
channel pair is the Analog input; if the ANALOG OUT LED is off, the source is
the selected digital input.
• To modify routing:
1) While pressing the SOURCE TO ANALOG OUT button depressed, press the
SOFT LIMIT button to select the pair of channels to be modified; the selected
pair is indicated by the flashing A/D OVER LEDs.
2) While maintaining the SOURCE TO ANALOG OUT button depressed,
press the OUTPUT RESOLUTION button to toggle the selected pair between
ANALOG and the selected digital source.
continued
8
6 7
7
APOGEE ELECTRONICS
9
11) A blinking digital source
LED indicates that the
selected source is not
synchronous with the unit's clock source.
12) The S/MUX and DW LEDs
located in the SOURCE TO
DIGITAL OUTS value list are
indicators only and cannot be selected.

13) OUTPUT RESOLUTION

can be set to 16-Bit UV22HR
only when SAMPLE RATE is
set to the 44.1-48 kHz range.