Lexicon LEXICON480LV4 Owner's Manual page 122

Page One
LVL
Level
The Oscillator Program
Unlike standard 480L programs, the Oscillator
reconfigures the mainframe so that signal no longer
passes from inputs to outputs. This allows the main-
frame outputs to be fed to the mainframe inputs to
calibrate analog signal levels. Likewise, an external
signal generator (from, for instance, a console) can be
used to calibrate the mainframe for a studio's design
center.
About the Parameters
LVL (Output Level)
LVL controls the oscillator output for both digital and
analog signal paths.
DEC (Decade)
DEC multiplies/divides the selected frequency in x10,
x100, or x1000 increments. The preset value is 2.
Decade
0 = ÷
1 = ÷
2 = Norm
3 = x 10
4 = x 100
5 = x 1000
As you can see, when the oscillator is set for high
resolution, .01 Hz increments can be selected with a
combination of frequency and decade. For example: If
the desired frequency is 1.02 Hz, move DEC to 3, set
FRQ to 1020 Hz, then move DEC to 0.
DEC FRQ
Decade Frequency
Example: Frequency = 20 Hz
.2
2
20
200
2000
20000
Bank 17: the Test & Reference Programs
ACC
WAV
Accuracy
Wave Form
FRQ (Frequency)
Sets the frequency of the oscillator, and displays the
actual oscillator frequency in Hz. and .01Hz. incre-
ments.
WAV (Wave Form)
WAV changes the oscillaotr waveform as follows:
0 = Sine Wave
1 = Triangle Wave
2 = Square Wave
ACC (Accuracy)
ACC adjusts the accuracy of the oscillator as follows:
0 = .5%
1 = .01%
ILEV
ILEV displays input level in 0.01dB increments over a
90dB range from dBfs. (dBfs = 90.00dB)
Meter detection is always averaged. A plus sign (+) will
appear next to the L or R channel display to indicate
long averaged mode. Moving the slider changes aver-
aging time from approximately 1 second to weeks!
ILEV
Input Level
14-2