
4Ć78 FST Configuration
Original Ć June 1990CE4.2:CL6211
FDFWS FDFWS
32
INSTRUCTION NAME: FDFWS (feedforward sum only)
DESCRIPTION: This instruction adds a positive or negative feedforward scale factor to the SVA
input. When the summer function (operand 1) is enabled, operands 2, 3, and 4 combine to
generate the feedforward output. When operand 3 is set to reverse, the product of the summer
gain (operand 2) and the summer value (operand 4) is subtracted from the SVA input to produce
the SVA output. When summer DIR/REV (operand 3) is set for direct action, the SVA input is added
to the product of the summer gain (operand 2) and the summer value (operand 4) to produce the
SVA output. The SVD input remains unchanged.
GRAPHIC REPRESENTATION: SYMBOLIC REPRESENTATION:
T
T
e
-1.0
X
k
NO GRAPHIC REPRESENTATION
OPERAND 4
OPERAND 3
OPERAND 2
OPERAND 1
CONFIGURATION FORMAT: FDFWS (
Summer enable >>
Summer gain >>
Summer REV/DIR >>
Summer value >>
Comment >>
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