Lexicon PCM 80 - Manual (Page 22)

Lexicon
PCM 80 User Guide
2-4
Control Mode Selections of various system states and conditions are made in Control Mode.
Press Control to enter this mode. The Control button LED will light to indicate
that the mode is active. Note that Control Mode functions are not available when
the Compare function is active.
The Control Mode matrix is shown below, followed by descriptions of each
available selection.
0.0 Ext: Prf 44.1kHz
Audio ✱ Word Clock
0.0 Ext: Cns 48kHz
When the PCM 80 is receiving valid digital audio, selecting Word
Clock will display the audio format and the rate of the incoming signal.
Audio ✱ Word Clock
Row 0
Audio
0.0 Word Clock
The PCM 80 can use its own internal clock as a timing reference, or it can
reference an external clock source from the rear panel S/PDIF jack. Use
ADJUST to select Ext (External), Int: 48kHz or Int: 44.1kHz. When either
Internal rate is selected, the digital input is disabled. To process audio from the
digital input, you must select Ext.
When External clock is selected, and the PCM 80 detects valid digital audio, the
rate of the External word clock will be displayed with a label indicating the digital
audio format type: Prf (Professional) or Cns (Consumer, also called S/PDIF).
Simultaneously press Up
and Down to return to 0.0.
An asterisk ( ✱ ) accompanying a parameter name indicates that there are subparameters available
at that matrix location. The Load / ✱ LED will light whenever an asterisk appears in the display. Press
Load / ✱ to step to the next subparameter. From any point in the matrix, press Up or Down together
with Load / ✱ to backstep to the previous parameter.
Note: Although the PCM 80 will
detect AES professional format
signals, it is designed to be used
with S/PDIF input. If your digital
input is not S/PDIF, please be
alert for locking problems and
other potential errors, and be
prepared to take the necessary
steps to provide the correct for-
mat input signal.