FBS Dynamic Filters Tab
This dialog contains the fifteen dynamic filters, with a scroll bar to display filters hidden
due to the dialog box size.
Dynamic filters are cut only notch filters, providing attenuation up to 30dB at the specified
Q. The default Q is set in the Tools > Options menu, but can be changed on the
settings tab prior to engaging the FBS dynamic filters.
NOTE: Changing the Q setting in the options menu after dynamic filters have been
generated clears all dynamic filters.
Figure 39. FBS Dynamic Filters Tab
Frequency and cut values are read only. Dynamic filters are in auto-detect mode when the
FBS block is active (see figure 39, a; Bypass FBS off). If testing reaches a point where no
further changes are desired, the lock button can be engaged. The lock mode of operation
is temporary, and is intended to be used during setup of the FBS. When the FBS dialog
box is closed, lock mode is automatically disengaged.
If there are specific dynamic filters that you want to assure are not overwritten, press the
Move to Fixed button (see figure 39, b) to write the designated filter settings to the first
available filter in the Fixed Filter tab.
NOTE: When a dynamic filter setting is moved to the fixed filter, it automatically
clears that frequency from the dynamic filter.
The Clear button (see figure 39, c) removes a detected frequency from the
corresponding dynamic filter. A cleared filter reverts to auto-detect mode unless Lock
mode is engaged.
DMP128 • Software Control 66
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