Control Mode - Lexicon PCM 90 - REV 1 User Manual

PCM 90 User Guide

Control Mode

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.
Row 0
Audio
Note: Although the PCM 90 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.
2-4
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 Input Source
The PCM 90 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 Dig, Analog: 48kHz or Analog: 44.1kHz. When either analog
rate is selected, the digital input is disabled. To process audio from the digital
input, you must select Dig.
When Dig is selected, and the PCM 90 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).
Audio Input Source
0.0 Dig: Prf 44.1kHz
When the PCM 90 is receiving valid digital audio, selecting Input Source
will display the audio format and the rate of the incoming signal.
Lexicon
Audio Input Source
0.0 Dig: Cns 48kHz