© 2006 Wohler Technologies Inc. ALL rights reserved
27
AMP-S8
User Manual P/N
821640
Rev-
B
SDI GROUP Selection:
GROUP Button
When either of the the
SDI
inputs are selected for monitoring, the
GROUP Button
allows the user to select which two 4-channel
SDI
audio
groups
are presented to the
left
and
right
banks of
four
Level Meter Bargraphs
.
When the buttons are pressed relatively rapidly, the order of
selections follows that shown in the table (right). But after a
selection is chosen and left until the display flashes once, slower
button presses will toggle between the
Group 1/2
and
Group
3/4
selections. After this, rapid presses will again initiate the cycling
as shown in the table. Since the first two selections are more
common choices, this features allows easy toggling between them.
Section 2:
Operation
User Interface Function Guide
Selection Modes
(Cont.)
Display Modes
Displaying Phase/Correlation Indication:
Φ
Φ
Φ
Φ
Φ
Button
Pressed by itself, the
Φ
Φ
Φ
Φ
Φ
Button
enables the
Phase/Correlation Indicator
in the
LCD Display
. The
average
correlation (phase) for the selected channel pair is indicated by a stationary block appearing within three positions on the
second line of the display. A moving block may also be present in these positions to indicate the
instantaneous
(short time
sample) phase correlation. The three positions are as follows:
Center:
Only one channel active or zero correlation between the two channels
Left (-):
Selected channels are
out-of-phase
(
-1
correlation maximum)
Right (+):
Selected channels are
in-phase
(
+1
correlation maximum)
Note:
With typical stereo program material, the moving block display is normal. With a single signal, or two completely
un
-related signals selected for the speaker(s), no correlation information is available, so the phase indicator block
will be at rest in the
center
of the LCD. A mono
in-phase
signal fed to both right and left channels would result in the
block being in the
right-most
position indicating complete correlation of the two signals.
