DSP Filter Parameters
The DSP Filter settings screen for the Lynx contains the following controls.
BLR mode
Sets the baseline restorer mode. With a setting of AUTO, the baseline restorer is auto
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matically optimized as a function of trapezoid shaping time and count rate. With set
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tings, of SOFT, MEDIUM and HARD, the baseline restorer is set to fixed rates as
selected.
Rise Time
Symmetrically sets the rise time and fall time of the digital filter time response. As
with conventional Gaussian shaping, the degree of noise filtering is proportional to the
rise time selection. The rise time can be selected from 35 rise/fall times ranging from
0.4 to 28 µs.
Flat Top
Sets the flat top portion of the digital filter time response. The flat top matches the fil
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ter to the detector charge collection characteristics to minimize the effects of ballistic
deficit. The flat top time can be selected from 21 flat top selections ranging from 0 to 3
µs.
Pole/Zero
Sets the device’s pole/zero setting (0 to 4095). The values 1 to 4095 represent 1.7 ms
to 40 µs; a value of zero sets the pole/zero compensation off (infinity).
Auto P/Z
Initiates automatic p/z process at the device.
MCS Parameters
The MCS settings screen for the Lynx contains the following controls:
Dwell Range
Sets the units for dwell time value.
Dwell Value
Sets the dwell time value (in units specified by the Dwell Range control)
Using MCA Definition Tables
User’s Manual 47
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