mode, the inhibit time is automatically extended to account for the system
overload recovery time or while external INHIBIT is set true.
Coinc Mode - Selects either COINCidence or ANTIcoincidence gating. In the
COINCidence mode (ANTIcoincidence) a positive GATE pulse enables
(disables) the conversion of the present input.
Filter Device Adjust Menu
Rise Time - 35 rise and fall times ranging from 0.4
µ
s to 28
µ
s; step size
dependent on rise time range; may be viewed on MONITOR output.
Flat Top - 21 flat top time selections ranging from 0 to 3
µ
s; increment size
dependent on flat top range; may be viewed on MONITOR output.
BLR Mode - AUTO, HARD, MEDIUM, SOFT; AUTO: The baseline restorer is
automatically optimized as a function of trapezoid shaping time and count rate;
HARD, MEDIUM, or SOFT: Sets the baseline restorer to fixed rates as selected.
Pole/Zero - Displays the current Pole/Zero setting; value ranges from 0 to 4095.
1 to 4095 represents 1.7 ms to 40
µ
s; a value of zero sets the pole/zero
compensation off or to infinity; adjustment enabled when RC preamp type is
selected; increment/decrement value using the associated slider bar.
Auto P/Z (9660A only) - Available only for the 9660A with the automatic
pole/zero option installed. Computer command initiates the automatic p/z
process.
AUTO BDC - Computer command initiates process of optimizing the trapozoidal
flat top parameters to match to charge collection time of the detector.
Preamp Type - RC, RESET; selects the Pole/Zero mode; RC: pole/zero is
adjusted by computer command; range: 40
µ
s to infinity; RESET: Sets pole/zero
at infinity for use with pulsed charge restoration (RESET) preamplifiers.
Stabilizer Device Adjust Menu
Gain Mode - ON, OFF, HOLD; ON/OFF: enables or disables the Gain
Mode; HOLD: disables the stabilizer Gain Mode, but maintains the current Gain
correction factor; Centroid (0 to 16 376 channels), Window (1 to 128 channels),
Spacing (2 to 512 channels) ratio (0.01 to 100), correction rate (1 to 512);
correction range of 1% for Ge and 10% for NaI detectors.
Zero Mode - ON, OFF, HOLD; ON/OFF: enables or disables the Zero Mode;
HOLD: disables the stabilizer Zero Mode, but maintains the current Zero
correction factor; Centroid (0 to 16 376 channels), Window (1 to 128 channels),
Spacing (2 to 512 channels) ratio (0.01 to 100), correction rate (1 to 512); max.
correction range of 1% for Ge and 10% for NaI detectors.
User’s Manual - ICN 9231014G
59
ICB Programmable Controls