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
S P ECI F I CATI 0 N 5

NUCLEAR DATA INC
Golf and Meacham Roads
Schaumburg, Illinois 60172
Telephone (312) 885-4700

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Four Input Multichannel Scaler Module
General Description

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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.

FJ11:[4

Operti.on

START

1

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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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 ImpedanceNominally 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.
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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.
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-

-

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-

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Memory Storage Allocation: 512, 1024, 2048, or
4096 channels, switch selectable. Memory storage
selection is dependent upon memory capacity of
analyzer system.

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.

Dwell Time Selection: Dwell time per channel is
selected by an external ND536 Clock Time Base
or similar timer.

C

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Specifications subject to change.
Printed in U.S.A. 2/75 PS 1020 2.5

NUCLEAR DATA INC

Sales and Service Facilities
United States and canada

Cleveland, Ohio
Tel: 216/331-5145

New York, New York
Tel: 212/962-3666

Washington, D.C.
Tel: 301/345-6766

London, England
Tel: 22733, 25357

Atlanta, Georgia
Tel: 404/241-3220

Houston, Texas
Tel: 713/443-1258

San Francisco, Calif.
Tel: 415/483-9200

Europe

Uppsala, Sweden
Tel: (018) 15-25-15

Boston, Mass.
Tel: 617/899-4927

Los Angeles, Calif.
Tel: 714/540-5032

Schaumburg, Illinois
Tel: 312/885-4700

Frankfurt, Germany
Tel: 590540

Other Sales and Service
Representatives located
throughout the world.
Please write or call
Schaumburg, Illinois for
your local
representative.



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