Wohler AMP2-VS User Manual page 10

AMP2-VS and AMP2-VSA User Manual P/N 821583 Rev-A
9
Phase Indication LEDs
These three LEDs indicate the instantaneous and average phase (polarity) conditions between the channels assigned to the
left and right speaker channels. The two smaller LEDs labeled FAST show instantaneous phase relationships in the signal.
The larger LED labeled AVG will indicate the average phase condition. Indication is as follows:
•
The left FAST LED glows (or blinks) GREEN for in-phase signals.
•
The right FAST LED glows (or blinks) AMBER for out-of-phase signals.
•
The large AVG LED indicates the average phase condition by glowing GREEN for in-phase signals, or RED for
out-of-phase signals.
In general, observing the AVG LED alone is sufficient for proper phase monitoring. While it is normal for stereo signals to
contain some intermittant instantaneous out-of-phase and in-phase conditions (FAST LEDs), a steady RED glow of the
AVG LED indicates an out-of-phase alarm condition.
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Balance Control
This control changes the volume balance between the left and right speaker channels. Note that this control attenuates the
signal from the source, so that the left and right bass frequencies (summed together and reproduced in the woofer channel)
will respond to balance adjustments in tandem with the left and right speaker channels. See page 14 for more information
concerning the balance control characteristics.
11
SDI Status LED
This bi-color (GREEN/RED) LED, labeled SDI, glows GREEN as long as a valid SDI digital datastream is being received.
It glows RED if TSR errors are present in the signal. If there is no SDI signal present the LED will be unlit. This LED always
functions whether or not the SDI digital signal is selected for monitoring through the unit.
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Front Panel Features
(Continued)
© 2004 Wohler Technologies Inc. ALL rights reserved
Section 2: Operation