Nuclear Data_Four_Input_Multichannel_Scaler_Module Data Four Input Multichannel Scaler Module
User Manual: NuclearData_Four_Input_Multichannel_Scaler_Module
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TECHNICAL
NUCLEAR
DATA
INC
Golf
and
Meacham
Roads
::
S
P
ECI
F
I
CATI
0
N
5
Schaumburg,
Illinois
60172
Telephone
(312)
885-4700
Four
Input Multichannel
Scaler
Module
General
Description
Nuclear
Data’s
Four
Input
Multichannel
Scaler
Module
facilitates
concurrent
multichannel
scaling
from
up
to four
inputs
when
used
in
conjunction
with
a
Nuclear
Data
Multichannel
Analyzer
System.
During
multiple
input
multichannel
scaling
opera
tion,
each
input
is
assigned
to
a
separate
memory
group
as
selected
by
a
front
panel
switch.
The
result
is
a
separate
record
representing
the
data
derived
from
each
input
with
each
record indicating
the
individual
characteristics
of
its
related
source.
Operti.on
Multichannel
scaling
input
pulses
from
up
to
four
sources
are
applied
to
front
panel
BNC’s.
Each
accepted
input
is
stored
in
the current
channel
of
the
respective
memory group.
Two
front
panel
switches
provide
selection
of
1,
2
or
4
multichannel
scaling
inputs
and
memory
sizes
of
512,
1024,
2048
or
4096
channels.
The
number
of
channels
per
input
(scan)
is
the
selected
memory
size
divided
by
the
number
of
inputs.
Dwell
time
per
channel
is
selected
by
an
external
ND536
Clock
Time
Base
(Nuclear
Data
part
number
88-0354)
or
similar
timer.
[nitiation
of
a
multichannel
scaling scan
is
accomplished
by
applying
a
start
signal
to
a
front
panel
BNC.
Front
panel
BNC’s
are
also
provided
for
dwell
time
input
and
an
output
which
indicates
when
a
multichannel
scaling
operation
is
in
progress.
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START
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Technical
Specifications
Operating
Modes:
1,
2
or
4
input
multichannel
scaling
or
OFF
mode.
In
the
OFF
mode, normal
pulse
height
analysis
is
enabled
if
an ADC
is
connected
through
the
module
into
the
Analyzer
System.
Count
Inputs:
Number
-
1,2
or
4.
Input Impedance-
Nominally
750
ohms.
Pulse
Amplitude
-
+3
to
+1OV.
Pulse
Width
-
200
nsec,
minimum.
Rate
-
A
function
of
the data
acquisition
storage
cycle
and
number
of
inputs
serviced.
Count Capacity
-
A
function
of
the
data acquisition
channel
capacity.
Memory
Storage
Allocation:
512,
1024,
2048,
or
4096
channels,
switch
selectable.
Memory
storage
selection
is
dependent
upon memory
capacity of
analyzer
system.
Dwell
Time
Selection:
Dwell
time
per
channel
is
selected by
an
external
ND536
Clock
Time
Base
or
similar
timer.
Scan
Initiation:
A
multichannel
scaling
scan
is
initiated
by
applying
an
appropriate
start
signal
to
a
front
panel
BNC.
Start
Input:
Signal
characteristics
-
Dc
level,
+4
±1V
to start,
+0.25
±
0.25V
quiescent.
Duration
-
200
nsec,
minimum.
Maintaining
the
+4
±
1V
level
or
an
open
circuit
causes
free
running
repetitive
multichannel
scaling scans.
Power
Requirements:
+5
Vdc
@
500
mA.
—12
Vdc
@50
mA.
Dimensions:
8.71
in.
h.
x
2.68
in.
w.
x
9.7
in.
d.
(NIM
compatible
two width module).
Part
Number:
88-0574.
C
r4%:
NUCLEAR
DATA
INC
Specifications
subject
to
change.
Printed
in
U.S.A.
2/75
PS
1020
2.5
Sales
and
Service
Facilities Cleveland,
Ohio
New
York,
New
York
Washington,
D.C.
London,
England
Other
Sales
and
Service
United
States
and
canada
Tel:
216/331-5145
Tel:
212/962-3666
Tel:
301/345-6766
Tel:
22733,
25357
Representatives
located
throughout
the
world.
Atlanta,
Georgia
Houston,
Texas
San
Francisco,
Calif.
Uppsala, Sweden
Please
write
or
call
Tel:
404/241-3220
Tel:
713/443-1258
Tel:
415/483-9200
Europe
Tel:
(018)
15-25-15
Schaumburg,
Illinois
for
Boston,
Mass.
Los
Angeles,
Calif.
Schaumburg,
Illinois
Frankfurt,
Germany
your
local
Tel:
617/899-4927
Tel:
714/540-5032
Tel:
312/885-4700
Tel:
590540
representative.
