ORTEC 863, Operating And Service Manual

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2
2. SPECIFICATIONS
2.1. PERFORMANCE
INPUT SIGNAL AMPLITUDE RANGE 0 to ±1.0 V
ac signal; 0 to ±2 V dc offset; maximum input ±2 V
signal plus offset.
OUTPUT AMPLITUDE RANGE 0 to ±5 V linear
into a 50
Ω
load. Output dc-coupled with dc offset
<±10mV.
RISE TIME <10 ns with Integration and
Differentiation time constants set to Out, or
.
2.2
τ
for other Integration settings and Differentiation Out.
CROSS TALK <0.01% from any output to any
input measured at maximum gain with Integration
and Differentiation time constants set to Out.
NOISE For maximum gain, rms noise referred to
the input <50
μ
V with Integration and Differentiation
set to Out; measured using a Hewlett-Packard
3400A true rms meter.
INTEGRAL NONLINEARITY <±0.5% over ± 5 V
into a 50
Ω
load.
TEMPERATURE SENSITIVITY dc level
<±10
μ
V
«E
C referred to the output. Gain sensitivity
<±0.05%
«E
C.
OPERATING TEMPERATURE RANGE 0
E
C to
50
E
C.
2.2. CONTROLS
Each section of the Model 863 Quad Timing Filter
Amplifier has separate controls for Coarse Gain,
Fine Gain, P/Z, Differentiation, and Integration time
constant.
COARSE GAIN PWB jumper selectable for
nominally 1× or 5×. Gain is reduced by a factor of 2
when using cable clip. The model 863 is shipped
with this jumper in the 5× position.
FINE GAIN Front-panel screwdriver potentiometer
continuously adjustable from 2 to 50 (nominal).
P/Z Front-panel screwdriver adjustable
potentiometer to adjust pole-zero cancellation for
decay time constants from 25
μ
s to
4
.
DIFFERENTIATION Time constant PWB jumper
selectable as either Out (equivalent to 0.1 ms) or
200 ns. A third position is available for custom
modification. The Model 863 is shipped with this
jumper in the Out position.
INTEGRATION Time constant PWB jumper
selectable as either Out or 50 ns. A third position is
available for custom modification. In the Out
position, the 10% to 90% rise time is <10 ns. The
Model 863 is shipped with this jumper in the Out
position.
INVERT/NONINVERT PWB jumper selectable to
Invert or Noninvert the Output signal relative to the
Input signal. The Model 863 is shipped with this
jumper in the Noninvert position.
2.3. INPUT
INPUT Positive or negative polarity selectable with
a PWB jumper; amplitude 0 to ±1 V ac signal; 0 to
±2 V dc offset; maximum input ±2 V signal plus
offset. Input impedance is 100
Ω
, protected to ±6 V.
Front-panel LEMO connector.
CLIP Two front-panel LEMO connectors to provide
delay line clipping of the input pulse using an
external 50
Ω
coaxial cable. Delay line clip is two
times the cable propagation delay. Gain is reduced
by a factor of two when using cable clip.
2.4. OUTPUT
OUTPUT Front-panel LEMO connector furnishes
the shaped and amplified signal through Z
o
<1
Ω
;
amplitude to ±5 V, rise time and decay time
controlled by the Integration and Differentiation time
constant settings. Output is dc-coupled and
controlled by a continuous baseline restorer.
2.5. ELECTRICAL AND MECHANICAL
POWER The Model 863 does not have an internal
power supply and must obtain power from a NIM-
standard power supply such as the ORTEC
4001A/4002D NIM Bin/Power Supply.
POWER REQUIREMENTS +24 V, 83 mA; -24V,
83mA; +12 V, 167 mA;
!
12 V, 167 mA; +6 V,
320mA;
!
6 V, 320 mA.