Audio Controls; Input/Clck; Input Mode; Output Mode - Lexicon MPX 1 - REV 2 User Manual

MPX 1 User Guide

Audio Controls

Input/clck

From anywhere in the Audio
menu, press Options to display
status and error log information.
Press Options again to exit.

Input Mode

Output Mode

5-2
The Audio menu allows you to change the settings of controls which affect the
MPX 1 audio input and output characteristics. These include: configuring the
inputs for stereo or mono applications, selecting analog or digital inputs and
outputs, etc. The controls available are each described below.
The MPX 1 can use its own internal clock or it can reference an external clock.
Depending on your rear panel connections, select Analog/Int, Analog/Ext or
Dig/Ext. When Analog/Ext or Dig/Ext is first selected, the MPX 1 will repeatedly
try to establish lock with an external digital source. If it is unable to establish lock,
an error message will be displayed. Pressing any button will allow you to clear
the error message and will return you to the Audio screen with Analog/Int
selected. To select Analog/Ext you must connect a source of digital clock at the
digital input. Note that the MPX 1 will accept only signals at 44.1kHz.
During operation, loss of lock will trigger an error message if repeated resync
attempts fail. LEDs on the front panel numeric display inform you when digital
signals are being received, and when lock is established.
Front panel indication of the presence of incoming
digital signals, and lock success is presented at the top
of the numeric display.
Options: Error Log and Status
Pressing Options gives you access to the following status and error log
information:
Error Log:
Clck Status:
The setting of Input Mode affects both analog and digital inputs. Select Stereo
to have left and right inputs processed separately. Select Mono (L only), or
Mono (R only) to have only the left or only the right input processed. (The other
input is ignored.)
In Output Mode, select Analog or Digital as the output mode of the MPX 1.
Data: nnnn 4-digit parity error count
Invalid: nnnnn 5-digit invalid data error count
Internal indicates Analog/Int selected as input
Locked Analog/Ext or Dig/Ext selected as input
and valid clock is present
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