data acquisition systems

239 Pages·2013·15.14 MB·English

data acquisition systems
NUCLEAR DATA INC
NUCLEAR DATA, INC.
Golf and Meacham Roads
Schaumburg, Illinois 60196
March, 1978
IM 88-0604-01
OPERATOR’S INSTRUCTION MANUAL
ND600 MULTICHANNEL ANALYZER SYSTEM
Copyright 1978, by Nuclear Data, Inc.
Printed in U.S.A.
C;
“THIS DOCUMENT IS THE EXCLUSIVE PROPERTY OF NUCLEAR DATA,
INC. AND MAY NOT BE REPRODUCED, NOR MAY THE INFORMATION
CONTAINED THEREIN OR DERIVABLE THEREFROM BE USED IN ANY
MANNER, EXCEPT BY WRITTEN PERMISSION OF NUCLEAR DATA, INC.
THE PROPRIETARY RIGHTS TO THE AFORESAID INFORMATION, BOTH
OF A PATENTABLE AND UNPATENTABLE NATURE, ARE EXPRESSLY
RESERVED TO NUCLEAR DATA, INC.”
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ADDENDUM I
VERSION 08 FiRMWARE OPERATIONAL CHANGES
The ND600 Version 08 Firmware changes the following operating characteristics
of the ND600 Analyzer System:
1. The operation of the ACQ pushbutton has been altered such that depressing
the ACQ pushbutton alternately initiates or terminates acquisition with an
acquisition pause accomplished by depressing the minus (—) pushbutton at the
operand pushbutton array and they depressing the ACQ pushbutton. Continu
ation of acquisition from a pause state is accomplished by depressing the ACQ
pushbutton. Previous versions of the ND600 firmware allowed acquire, pause,
acquire by successive depressions of the ACQ pushbutton. Termination of acquire
from a pause state was accomplished by depressing the minus (—) pushbutton and
then the ACQ pushbutton.
2. The characters “ND600” now appear in the first line of all alphanumeric
status displays.

CONTENTS
CHAPTER TITLE PAGE
INTRODUCTION 1—1
System Description 1—1
System Specifications 1—2
ND600 Terminal 1—2
ND600 Electronics Enclosure 1—2
Data Input/Output Peripheral Interface Options 1—5
Operational Function Firmware Option Packages 1—6
INSTALLATION 2—1
General 2—1
Unpacking and Inspection 2—1
ND600 Electronics Enclosure 2—1
ND600 Terminal 2—1
Ventilation 2—2
Power Source 2—2
ADC Installation 2—2
Optional System Component Board installation 2—3
Systeminterconnection 2—3
ND600 Terminal Installation 2—4
X—Y Plotter Interconnection 2—5
PowerConnection 2—5
Ill CONTROL, INDICATOR AND CONNECTOR DESCRIPTIONS. 3-1
.
General 3—1
. . .
ND600 Terminal Alphanumeric Status Display 3—1
Page 1 Display Parameters 3—2
— . . .
Page 2 Data Acquisition Parameters 3—3
—
CHAPTER TITLE PAGE
Page 3 Data Manipulation Parameters 3—4
—
Page 4 Auto Analysis Parameters 3—5
—
ND600 Terminal Pushbutton Keyboard 3—6
DisplayPushbuttons 3—6
FuncHonPushbuttons 3—8
StatusPushbuttons 3—12
,
Operand Pushbutton Array. . 3—13
ND600 Terminal CRT Controls 3—13
,
ND600 Electronics Enclosure (Rear Panel) 3—14
IV OPERATINGPROCEDURES 4—1
Introduction 4—]
Definition of Terms and Description of Common Spectral Features 4—1
Principles of Radiation Analysis 4—4
Analog to Digital Converter 4—6
ND600 Terminal 4—7
DataAcquisition 4—8
Pulse Height Analysis 4—8
Initial System Set—up.and Spectrum Storage 4—8
SystemCalibration 4—10
A’phanumeric Status Page Selection and
Parameter Entry 4—12
PHA Spectrum Storage for a Preset Clock Time 4—14
MultichanneiScaling 4—16
Multichannel Scaling (Single Pass) 4—17
Multichannel Scalin.g. (.Preset Recurrent Passes) 4—18
Sequential Listing 4—20
Data Subtraction 4—20
SpectrumComparison 4—21
Spectrum Stripping 4—22
Region of Interest Selection, Intensification,
TotalizationandReadout . 4—24
Display Expansion and Positioning. 4—28
Scroll Display 4—30
Automatic Energy Calibration 4—32
AutoAnalysis 4—35
PlotterReadout . . . . . . . 4—39
Calibration Procedure 440
ReadoutProcedure . .. .. 4—40
StatusDisplaylnput/Output. 4—41
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CHAPTER TITLE PAGE
V DATA MANIPULATION PACKAGE (47-0054) 5-1
VI INTENSIFIED REGION PEAK EXTRACTION PACKAGE
(47-0055) 6—1
VII INTENSIFIED REGION ISOTOPE IDENTIFICATION
PACKAGE (47-0056) 7—1
VIII AUTOMATIC PEAK SEARCH PACKAGE (47-0057) 8-1
IX AUTOMATIC ISOTOPE IDENTIFICATION PACKAGE
(47—0058) 9—1
X DIGITAL RATIOS PACKAGE (47-0071) 10—1
XI SERIAL INPUT/OUTPUT INTERFACE (70—2437) 11—1
XII PARALLEL INPUT/OUTPUT INTERFACE (70—2461) 12—1
XIII 7/9 TRACK MAGNETIC TAPE INTERFACE (70—2438) 13—1
III

CHAPTER I
INTRODUCTION
SYSTEM DESCRIPTION
The ND600 is a firmware controlled, microcomputer—based, multichannel analyzer system.
It combines the operational convenience of a hardwired analyzer with the computational
power of a completely firmware controlled LSI—1 1 microcomputer to produce an extremely
powerful, yet easy to use multichannel data analysis system.
ND600 is packaged in two compact convenient units, representing a modern new approach
in multichannel analyzer design and operational simplicity. One unit, the ND600
Terminal, is the system’s display and operational control center. It contains a large, 6—inch x
8—inch, display CRT, a functionally grouped 44-pushbutton interactive keyboard and a
four—wide NIM enclosure and power supply.
The built—in NIM enclosure and power supply houses and powers the analog to digital
converter (ADC) module (an ND575 ADC is included with each system) and optional
front end modules such as preamplifiers, amplifiers, discriminators or detector high
voltage supplies.
The second unit, the ND600 Electronics Enclosure, is only five and one—quarter inches
high and can be mounted in a 19—inch rack or used as a table—top pedestal for the terminal.
it contains the LSI—1 1 1/0 bus, two printed circuit board housings, each capable of
accommodating up to six full—size plug—in boards, and the system power supplies. All
other ND600 hardware and firmware is contained on printed circuit boards which plug
into either of the board housings.
The front board housing accepts two full—size basic system boards and up to four full—size
or eight—half—size optional boards. One of the basic system boards contains the LSI—1l
microcomputer, 2K, 20—bits of data storage memory and 1K, 16—bits of scratch pad. The
other basic system board contains the basic system firmware (preprogrammed ROM memory).
Optional boards which can be plugged into the front board housing include a full—size
RAM memory board for expanding data storage memory to up to BK data channels, a
variety of half—size boards for interfacing to input/output peripherals including high speed
1—1