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Revision date:
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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
9
2.2 CHARACTERISTICS OF THE SIGNALS
Table 2.1: Mod. N568B/ N568LC Technical Features
NAME
N568B N568LC
INPUTS
INPUTS 0..15
Positive or negative pulses with rise time
≥
18 ns, max. amplitude: 8 V (absolute
value); 50
Ω
impedance
H. S. CAENET IN/OUT
Std. CAENET protocol signals
OUTPUTS
OUT
100
Ω
impedance. Unipolar, dynamic range ±8 V max (1 Mohm load); polarity
as selected in common with XOUT and MUXOUT.
XOUT
100
Ω
impedance. Unipolar, further 10x fixed amplification of the OUT value,
dynamic range ±4 V max into 100
Ω
load; polarity as selected in common with
OUT and MUXOUT.
FOUT
100
Ω
impedance. Unipolar, 100 ns
Differentiation Time Constant, ±4 V
max into 100
Ω
load. Risetime: 25 ns
typically.
Gain factor: 7 to 10 for non inverting
configuration, 20 to 30 (approx.) for
inverting configuration.
50
Ω
impedance. Unipolar, 100 ns
Differentiation Time Constant, ±4 V
max into 100
Ω
load. Risetime: 25 ns
typically.
Gain factor: 7 to 10 for both inverting
and non inverting configuration
MUX O
100
Ω
impedance. Unipolar, ±8 V max (1 Mohm load); polarity as selected in
common with OUT. Selected channel is the last accessed via H.S. CAENET.
Can be disabled via CAENET.
MUX F
100
Ω
impedance. Unipolar, amplitude 85% approx. of FOUT amplitude.
Selected channel is the last accessed via H.S. CAENET. Can be disabled via
CAENET.
PWR MAN CTR
Std. CAENET Manual Controller supply voltage
GENERAL
INTEGRAL NON
LINEARITY
±0.05% in 90% of the full scale @ Gain=90 and 6 µs shaping time (± 0.25%
typ. for any shaping time)
EQUIVALENT INPUT
NOISE
< 15 µV (Gain=100; 3 µs shaping time)
< 25 µV (Gain=100; 3 µs shaping
time)
INTERCHANNEL
CROSSTALK
Output in one OUT (FOUT) channel affects any other OUT (FOUT) channel by
no more than -45 dB (at Gain =1 and 5 V input signal)
GAIN RANGE
adjustable from 0.15 to 480 (see § 3.2.5)
SHAPING TIME
selectable time constant of 0.2 µs, 1 µs, 3 µs and 6 µs
COMMON OFFSET
from -75 mV to +210 mV with Positive Output Polarity; from +75 mV to -210
mV with Negative Output Polarity
POLE ZERO
adjustable on 256 steps to match preamp tails in a range from 50 µs to 500 µs