Zero Spacing
Sets the spacing (in channels) between the upper and lower sampling windows. The
windows should be placed so that a shift in the reference peak reflects a significant
change in count rate through the window. For broad peaks, the spacing should be set
so that the windows’ edges are not on the flat part of the peak.
Zero Rate Div
The Zero Rate Divisor sets the count rate dividers at the input to the correction register
for Zero intercept. For high count rate reference peaks, increasing the Divider value
will smooth out the correction applied to the system and minimize any peak broaden-
ing.
Zero Ratio
The Zero ratio value is interpreted by the stabilizer as the ratio to maintain between the
two zero windows (ratio = upper window/lower window). For instance, a value of 1
would be appropriate for a pure Gaussian peak.
Gain Correction Range
Correction range: 1% (Ge) or 10 (NaI). This control selects the Gain Correction range
that can be provided to correct for drift. Select
±
1% for germanium detector or
±
10%
for a sodium iodide detector.
Zero Correction Range
Correction range:1% (Ge) or 10% (NaI). This control selects the Zero Correction
range that can be provided. Select
±
1% for a germanium detector or
±
10% for a so-
dium iodide detector.
Zero Mode
Sets the Zero Stabilization mode to off, on, or hold.
Off disables zero stabilization and sets the correction adjustment to 0.
On enables zero stabilization, allowing the stabilizer to compare the incoming data to
the zero centroid and window settings, then compensate for data below (or above) the
centroid.
Hold disables zero stabilization, but maintains the current correction adjustment at the
stabilizer’s output.
Gain Mode
Sets the Gain Stabilization mode to off, on, or hold.
Off disables gain stabilization and sets the correction adjustment to 0.
User’s Manual - ICN 9231014G
25
ICB DSP 9660 Setup Parameters
