Spicer Consulting SC28 Bedienungsanleitung

SC28 Monitor for Magnetic Fields,

Vibrations, Acoustics, Temperature and

Humidity

Version 1.0 Beta 1 for Windows 7, 8.1, 10

User Manual

SPICER CONSULTING Electron Beams & Electronic

Systems

Acknowledgement

The SC28 software includes programs created by Spicer Consulting using

LabVIEW from National Instruments.

Copyrights

This document may not be reproduced or transmitted in any form, electronic or

mechanical, including photocopying, recording, storing in an information retrieval

system, or translating, in whole or in part, without the prior written consent of

Spicer Consulting.

reserved.

Trademarks

LabVIEW is a trademark of National Instruments Corporation.

SPICER CONSULTING

Eden Laboratory, Broadmead Road, Stewartby, Bedfordshire, MK43 9ND, England.

Telephone: +44 1234 765773, Fax: +44 1234 765778

E-mail: enq@spicerconsulting.com

Web site: http://www.spicerconsulting.com

Contents

About this Manual ................................................................................................... 5

Organisation of this Manual ......................................................................... 5

Conventions used in this Manual .................................................................. 6

Chapter 1 - Introduction to the SC28 System .......................................................... 7

Hardware ...................................................................................................... 7

Software ........................................................................................................ 7

Sensors .......................................................................................................... 7

Getting Started .............................................................................................. 8

Adding Sensor Calibration Files ................................................................. 10

Connecting the SC28/SI ............................................................................... 8

Connecting a 3-axis Magnetic Field Sensor ................................................. 8

Connecting Accelerometers .......................................................................... 8

Connecting a Precision Microphone ............................................................. 9

Connecting a Temperature/Humidity Sensor ................................................ 9

Connecting a Voltage Signal (or User-defined Sensor) ................................ 9

How to Run the Programs ............................................................................. 9

How to Exit SC28 ....................................................................................... 11

Getting Help ............................................................................................... 12

Chapter 2 – Environmental Disturbances .............................................................. 13

Electron Beam Instruments ......................................................................... 13

Magnetic Field Sources .............................................................................. 13

Vibration Sources ....................................................................................... 14

Acoustic Sources ........................................................................................ 14

Temperature ................................................................................................ 14

Humidity ..................................................................................................... 15

Chapter 3 – Setting up Monitoring ........................................................................ 16

Setup Steps ................................................................................................. 16

Check the Specifications............................................................................. 16

Define Position and Orientation ................................................................. 17

Set up Signals and Scales ........................................................................... 17

Set up Spectrum Analyser .......................................................................... 17

Set up Chart Recorder ................................................................................. 17

Set up Data Logging ................................................................................... 18

Chapter 4 – Signals and Scales .............................................................................. 19

Signal Display and Clipping ....................................................................... 19

Scales and Ranges ...................................................................................... 20

Chapter 5 – Spectrum Analyser Controls............................................................... 23

Frequency Range ........................................................................................ 23

Number of Points ........................................................................................ 23

Window Function ....................................................................................... 24

Spectrum Mode .......................................................................................... 25

Combine Mode ........................................................................................... 25

Chapter 6 – Chart Recorder Controls .................................................................... 27

Chart Time Step ......................................................................................... 27

Chart Mode Controls .................................................................................. 27

Chapter 7 – Data Logging Controls ....................................................................... 30

Chapter 8 – Environmental Specifications ............................................................ 33

Specifications ............................................................................................. 33

Specification Editor .................................................................................... 34

Chapter 9 – SC28 Calibration ................................................................................ 37

Calibration Panel ........................................................................................ 37

User Defined Units ..................................................................................... 41

Chapter 10 - Menu and Toolbar Functions ............................................................ 43

Menu .......................................................................................................... 43

Calibration Tool ......................................................................................... 43

Specification Tool ...................................................................................... 43

Setup Files .................................................................................................. 43

Data Logging Tool ..................................................................................... 44

Exiting the Program ................................................................................... 44

Resizing the Window ................................................................................. 44

Help Tool ................................................................................................... 44

Reset DC Sensor Tool ................................................................................ 44

Autoscaling ................................................................................................ 45

Plot Tools ................................................................................................... 45

Appendix 1 – SC28 Specification.......................................................................... 46

Appendix 2 - File Formats ..................................................................................... 48

Export File Text Format ............................................................................. 48

Specification File Format ........................................................................... 52

Default Folders ........................................................................................... 52

Appendix 3 - Units ................................................................................................ 53

Magnetic Field Units .................................................................................. 53

Vibration Units ........................................................................................... 54

Sound Level Units ...................................................................................... 55

Appendix 4 - Window Functions ........................................................................... 56

Index ...................................................................................................................... 57

About this Manual

This manual describes the SC28 Monitor for Magnetic Fields, Vibrations,

Acoustics, Temperature and Humidity and explains how to use it.

Organisation of this Manual

Chapter 1 - Introduction to the SC28 System, describes the system components and

applications. It explains how to get started, how to use the sensors, how to run the

programs and how to get help.

Chapter 2 – Environmental Disturbances, describes the environmental factors that

can disturb an electron beam instrument.

Chapter 3 – Setting up Monitoring, explains how to use the electron beam

instrument’s environmental specifications to guide the setting of the SC28 controls.

Chapter 4 – Signals and Scales, is a detailed reference on the SC28 signals and

scales settings.

Chapter 5 – Spectrum Analyser Controls, is a detailed reference on the SC28

spectrum analyser settings.

Chapter 6 – Chart Recorder Controls, is a detailed reference on the SC28 chart

recorder settings.

Chapter 7 – Data Logging Controls, is a detailed reference on the SC28

datalogging settings.

Chapter 8 – Environmental Specifications, explains how to load a microscope’s

environmental specifications into the SC28 for direct comparison with measured

results.

Chapter 9 – SC28 Calibration, explains how to load calibration files, reset a DC

sensor, self-check a microphone and add user-defined units.

Chapter 10 - Menu and Toolbar functions, explains how to use all the Menu and

Toolbar functions of the SC28.

Appendices 1-4 give details of SC28 specifications, file formats, units and window

functions.

Conventions used in this Manual

The following conventions are used in this manual:

bold Bold text denotes control names, menu items, dialog box buttons or

options that appear on the screen.

italic Italic text denotes emphasis, a cross reference, or an introduction to

a key concept.

bold italic Bold italic text denotes a note, caution, or warning.

< > Angle brackets enclose the name of a key on the keyboard.

+ A plus between two or more key names enclosed in angle

brackets denotes that you hold down the first key while you press

the next key(s) - for example, <ctrl+P>.

 Warning: This symbol to the left of bold italic text denotes a warning,

which alerts you to the possibility of damage to your equipment.

! Caution: This symbol to the left of bold italic text denotes a caution, which

alerts you to the possibility of data loss or a system crash.

 Note: This symbol to the left of bold italic text denotes a note, which

alerts you to important information.

Chapter 1 - Introduction to the SC28 System

Hardware

The SC28 monitor is a designed for long term monitoring of the room environment

for electron microscopes and similar equipment. It can log the spectra and charts of

ambient magnetic fields, vibrations, acoustic levels, temperature and relative

humidity. It measures the magnetic fields, vibrations and acoustic levels at 2 kHz

and temperature/humidity at 1Hz or below. Measurements are taken continuously,

with no gaps, so that no event is missed. It supports the following hardware:

Model

Number of Inputs

3-axis

Magnetic

Field

Vibration Precision

Microphone

Temperature/

Humidity

AUX

BNC

SC28/SI

The SC28/SI supports a wired Ethernet connection.

Software

The SC28 software runs on a Windows PC that is connected to the same Local

Area Network as the SC28/SI. It automatically detects the SC28/SI hardware

without needing to know its IP address in advance. Included with the SC28

software is the SCplot program, which views and prints results or saves graphs that

you can use in reports.

Sensors

The following sensors are available for the SC28 system:

Sensor

Description

Sensor

SC11/AC

A 3-axis AC magnetic field sensor with a lower bandwidth of

1 Hz and a dynamic range of 80 mG (8



T) Pk

Sensor

SC24/DC+AC

A 3-axis DC magnetic field sensor using magneto-resisitive

technology with a lower bandwidth down to DC a dynamic

range of 40 mG (4



T) Pk

Wilcoxon

731A

A Seismic Accelerometer, with bandwidth of 0.1 Hz to 500 Hz

and max

range of 200 mg’s (20

mm/s

) Pk

in this system.

B&K

4190/2669L

A Brüel and Kjær precision microphone type 4190 with

preamplifier type 2669L can measure from 20 dB to 100 dB

with a

lower

bandwidth

1.5 Hz.

SC28/TH

A combined Temperature

and Relative Humidity Sensor.

AUX

One input is available for a user

defined channel as required.

Connecting the SC28/SI

Connect an Ethernet cable from the sensor interface to the Local Area Network

(LAN) that your PC is connected to. (If there is no LAN, you may connect the PC

and SC28/SI together directly. In this case, both devices should use a link local IP

address of the form 169.254.x.x). Connect the supplied power supply to the DC IN

input and to an AC outlet of 100-240V, 50-60Hz.

When you run the SC28 software, it automatically detects the SC28/SI hardware

and connects to it. If no SC28/SI is detected the software will wait until one is

connected to the LAN. If more than one SC28/SI is detected on the LAN, the

software asks which you wish to connect to. Once connected, the SC28/SI’s serial

number is automatically selected on the Calibration panel.

Connecting a 3-axis Magnetic Field Sensor

Mount a Sensor SC11/AC or Sensor SC24/DC+AC magnetic field sensor onto

the tripod provided and connect it to the MAG input. Select the serial number of

the sensor on the Calibration panel. The magnetic field sensors have three axes,

oriented as shown on the label. They display on the MX, MY and MZ channels in

the SC28 Monitor. DC sensors must be reset after they are moved, using the

software Reset DC button.

 Note: Plug in the AC or DC sensor before you start the SC28 program,

because the software detects the sensor at start up.

Connecting Accelerometers

Each accelerometer measures 1-axis vibration, oriented along the axis of its

cylindrical case. It is supplied with a stand, allowing it to be placed on the floor in

each of the X, Y and Z directions.

On the SC28/SI there are three four-pin accelerometer connectors: VIBX, VIBY,

VIBZ. They display on the VX, VY and VZ channels in the SC28 Monitor.

Select the accelerometer(s) on the Calibration panel. You can connect or

disconnect an accelerometer at any time.

 Warning: Do not drop the accelerometers. They are fragile and must be

handled gently.



 Note: Allow 2 minutes for the DC operating level of an accelerometer to

stabilise after turning it on or moving it. Moving it more gently

reduces the settling time.

Connecting a Precision Microphone

Insert a Brüel and Kjær precision microphone type 4190 with preamplifier type

2669L into one of the holders on the tripod provided and gently tighten the holding

screw. Connect the cable to the MIC input of the SC28/SI.

Select the microphone’s serial number on the Calibration panel. The signal then

displays on the A channel in the SC28 Monitor.

You can run a quick self-check on the microphone from the Calibration panel. See

the Microphone Self Check section of Chapter 9 – Calibration for details.

 Warning: Do not drop the microphone. It is fragile and must be handled

gently

Connecting a Temperature/Humidity Sensor

Insert a Sensor SC28/TH Temperature/Humidity sensor into one of the holders on

the tripod provided and gently tighten the holding screw. Connect the cable to the

TEMP/RH input of the SC28/SI.

Select the sensors serial number on the Calibration panel. The signals then display

on the T and H channels in the SC28 Monitor.

Connecting a Voltage Signal (or User-defined Sensor)

Connect the signal to the BNC AUX input. This input displays on the U channel of

the SC28 Monitor.

You can connect or disconnect the BNC input at any time. See the User Defined

Units section of Chapter 9 – Calibration for how to add user-defined units.



 Warning: Connecting a voltage greater than ±30V to the AUX input could

damage it.

Install the Software

The SC28 system is provided without a PC. First install the software on your

computer using the separate instructions in the release notes.

Adding Sensor Calibration Files

At installation time, you are prompted to install the sensor calibration files. You

can add them at any other time by clicking the Cal button in the Monitor window

then using Add Sensors on the Calibration panel. For full details, see the Add

Sensors section in Chapter 9 - Calibration.

How to Run the Programs

To run the SC28 programs, select one of the following from:

Start Menu > All Programs > Spicer Consulting > SC28 1.0 >

SC28 1.0

SCplot 5.6

SC28 is the main monitoring program that performs measurements and logs results

to files on the PC.

Click OpenMonitor to show the Monitor window that allows you to configure the

settings and view the current measurements.

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