For the extended actuator signature test, the range must be at least 10% and the starting position must
be less than the ending position. The speed for the extended actuator signature is the same speed
used for the standard valve signature.
During the test, the valve moves from original position to the start position specified in the Start Position
box, then ramps to the end position specified in the End Position box. After reaching the end position, it
returns to the original position. In the second part, valve moves to the end position, then ramps to start
position at the specified speed. After reaching at start position, it returns to the original position and fin-
ishes the test. The results appear in the Diagnostic Graph window as illustrated in the figure below with
a full range of valve travel (-5 to 105% range).
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Figure 45. Diagnostic Graph - Extended Actuator Signature
