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FSN Series • User’s Guide
7. Operations
Understanding the T-Bar and Transition LEDs
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This section describes the functionality of the
T-Bar
and
Transition LEDs
, which are
identical for the M/E and PGM banks.
Figure 7-10.
T-Bar and Transition LEDs
The
T-Bar
provides manual transition control for the layers enabled in the
Next Transition
Group
. For both manual and automatic transitions, the
Transition LEDs
indicate the
position of the transition in progress.
The following topics are discussed in this section:
•
•
•
Physical and Virtual T-Bar Position
•
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When a manual transition is performed, the
T-Bar
controls the transition direction — away
from (or back towards) the end-limit.
Please note:
•
In general, when the
T-Bar
is resting at either the top or bottom limit and all
Transition LEDs
are off, the bank’s output is full
BG
(or
PGM
) bus, and the
various key layers are completely on or off.
•
From either limit (when
BG
is armed), moving the
T-Bar
always
transitions from
the
BG
(or
PGM
) bus towards the
PST
bus.
•
When the
T-Bar
is manually moved, the
Transition LEDs
always move in the
same direction as
T-Bar
movement. The LEDs indicate the transition’s position
between the
BG
(or
PGM
) and
PST
.
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This section provides information about automatic transitions, and their flexibility. Please
note the following important points:
•
When an automatic transition is performed, the
Transition LEDs
indicate the
transition’s position, but the direction is always towards the
PST
bus.
T-Bar
Transition
LEDs