22
Lexicon
Calibration
Setting
Input Levels
There are four inputs on the CP-3. Inputs 1, 2 and 3 switch audio and video;
Input 4 switches audio only and outputs the video signal from Video Input
1. Each input can be assigned an individual gain level to compensate for
sources with different output levels. You can create a name that will be
displayed on the screen whenever that input is selected and have each input
automatically engage the proper operating mode. For example, Input 1
could have an input level gain of +6dB, display "Video Disc" on the screen,
and engage the Home THX Cinema mode.
To obtain maximum performance from the CP-3 (or almost any other signal
processor) it is important that the unit be driven to its full input level
without overloading. Despite industry attempts at standardization, there is
still a wide disparity of output levels among different sources. For example,
Compact Discs are often as much as 10-15dB higher in level than video discs.
To compensate for this, each of the four inputs on the CP-3 can be assigned
a different input gain, assuring optimum performance and consistent
volume, regardless of the source selected. The CP-3 can also be set to
monitor the input level and automatically optimize the input gain. The CP-
3's auto-level and signal-to-noise optimization systems can be defeated for
special situations. (The S/N Optimizer is deliberately turned off in the
Ambience and Reverb modes.)
Note: When calibrating the input levels, set the system volume to -25dB or
higher to ensure optimum meter accuracy. You may engage the System
Mute if you do not want to hear the input.
To adjust the input parameters for any of the four inputs, select the input,
then press the SETUP button on the remote to call up the main Setup menu.
The cursor will be at "INPUTS". (If it is not, select it with PARAM.) Press
PARAM
▲
or
▼
. The display will show:
Select the input you want to adjust by pressing the appropriate input select
button at the bottom of the remote. Then press PARAM
▲
or
▼
. The display
will read:
SET INPUT(X) GAIN
MAN+00 AUTO+00dB
Adjusting Input
Parameters
