ORTEC 142PC, Руководство по эксплуатации и обслуживанию

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2
2. SPECIFICATIONS
2.1. PERFORMANCE
NOISE Increases with increasing input
capacitance. Typical performance values, based
on silicon equivalent of
,
= 3.6 eV at
J
= 2
:
s, are
2.9 keV at 0 pF and 4.1 keV at 100 pF; the typical
slope is 20 eV/pF.
RISETIME Based on a +0.5-V signal through either
output into a 93
S
circuit and measured from 10%
to 90% of peak amplitude; risetime compensation
adjustment optimized; 25 ns at 0 pF and 150 ns at
100 pF.
SENSITIVITY Nominal, measured through either
output, 300 mV/MeV Si.
ENERGY RANGE 0 to 20 MeV Si.
ENERGY RATE 3 X 10
4
MeV/s.
DYNAMIC INPUT CAPACITANCE 1000 pF
INTEGRAL NONLINEARITY
#
0.05% for 0 to ±7
V open circuit or ±3.5 V terminated.
TEMPERATURE INSTABILITY
#
±50 ppm/°, 273
to 323 K (0 to 50°C)
DETECTOR BIAS ISOLATION ±3000V
OPEN LOOP GAIN
$
40,000
2.2. INPUTS
INPUT Accepts input signals from a proportional
counter and extends operating bias to the
proportional counter.
BIAS Accepts the bias voltage for the proportional
counter from a bias supply.
TEST PULSE Accepts input voltage pulses from
a pulse generator for instrument and system
check and calibration; R
in
= 93
S
.
2.3. OUTPUTS
E and T (For Energy and Timing) Two connectors
furnish identical signals through two output paths;
either or both outputs can be used as required, and
they are interchangeable; R
o
= 93
S
through each
connector and the output polarity is opposite from
the input pulse polarity (output pulse polarity is the
same as bias polarity).
2.4. CONNECTORS
INPUT AND BIAS Type SHV.
TEST PULSE, E AND T Type BNC.
POWER CABLE 10-ft (3-m) captive power cable,
ORTEC 121-C1; longer lengths available from
ORTEC on special order.
2.5. ELECTRICAL AND MECHANICAL
POWER REQUIRED Furnished from NIM bin and
power supply through any ORTEC, main amplifier,
or from an ORTEC 114 Preamplifier Power Supply;
built-in captive cable is compatible with either
source.
+24 V, 30 mA; -24 V, 10 mA;
+12 V, 15 mA; -12 V, 15 mA.
DIMENSIONS 1.75 X 5.2 X 4 in., plus 10-ft cable
(44.5 x 132 x 100 mm, plus 3-m cable).