
Document type:
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User's Manual (MUT)
Mod. N568B/LC 16 Ch Spectroscopy Amplifiers
26/01/2007
4
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N568B_N568LC_REV4.DOC
37
14
3.2.5 GAIN
SETTING
This setting can be done either via Manual Controller or via H. S. CAENET. The Coarse Gain can be
set in 8 steps (0 to 7), each step approximately doubling the Gain of the previous one. The Fine Gain
can be set in 255 steps (0 to 255). The fine gain and coarse gain ranges allow a choice accuracy from
0.15 to 480. As an example, the following tables contain some extremity gain values obtained with the
indicated shaping times and gain settings (positive input signals).
Table 3.1: Gain Values (Signals risetime: 10 µs)
Gain values
(Input Signals risetime: 10 µs)
Shape
Times
0.2 µs
1 µs
3 µs
6 µs
Fine Gain
Fine Gain
Fine Gain
Fine Gain
Coarse
Gain
0 255 0 255 0 255 0 255
0 0.15 0.6 1.13 1.25
7
38.02 153.64
286.45
322.91
Table 3.2: Gain Values (Signals risetime: 0.05 µs)
Gain values
(input Signals risetime: 0.05 µs)
Shape
Times
0.2 µs
1 µs
3 µs
6 µs
Fine Gain
Fine Gain
Fine Gain
Fine Gain
Coarse
Gain
0 255 0 255 0 255 0 255
0 1.25 1.88 1.86 1.6
7
260.41 476.56
481.77
416.6
3.2.6 POLE ZERO ADJUSTMENT
This setting can be done either via Manual Controller or via H. S. CAENET. Adjustable on 256 steps
to match preamp tails in a range from 50 µs to 500 µs.
3.2.7 OFFSET
SETTING
This setting can be done either via Manual Controller or via H. S. CAENET. Allows to add an offset
value to shift the baseline of the output. Allowed values are from -75 mV to +210 mV with Positive
Output Polarity; from +75 mV to -210 mV with Negative Output Polarity.