Performance
SPECTRUM BROADENING - The FWHM of
60
Co 1.33 MeV gamma peak for an in-
coming count rate of 2 kcps to 100 kcps will typically change less than 6% for 2.8
µ
s
rise/fall time, 0.6
µ
s flat top and proper P/Z matching. These results may not be repro-
ducible if the associated detector exhibits an inordinate amount of long rise time sig-
nals.
INTEGRAL NONLINEARITY -
≤±
0.025% of full scale over the top 99.5% of
selected range.
DIFFERENTIAL NONLINEARITY -
≤±
1% over the top 99% of the range including
the effects from integral nonlinearity.
GAIN DRIFT -
≤
50 ppm/
°
C.
ZERO DRIFT -
≤
10 ppm/
°
C.
OVERLOAD RECOVERY - Recovers to within 1% of full scale output from x1000
overload is 2.5 non-overlapped pulse widths of full gain, at any shaping (processing
time), and with pole/zero properly set.
Pileup Rejector/Live Time Corrector
PULSE PAIR RESOLUTION - 500 ns.
FAST DISCRIMINATOR THRESHOLD - Set automatically or manually.
DEAD TIME CORRECTION - Extended Live-time correction, accuracy of reference
peak area changes 5% (3% typical) up to 50% system dead time for 4
µ
s Gaussian
equivalent processing time.
Power Requirements
+24 V dc – 90 mA
+12 V dc – 200 mA
+6 V dc – 1.5 A
–24 V dc – 90 mA
–12 V dc – 150 mA
–6 V dc – 1.2 A
Appendix A - Specifications
60
Model 9660-9660A ICB Digital Signal Processor
