Spicer Consulting SC28 User Manual
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Spicer Consulting SC28 User Manual

Monitor for magnetic fields, vibrations, acoustics, temperature and humidity
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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

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Summary of Contents for Spicer Consulting SC28

  • Page 1 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...
  • Page 2 Acknowledgement The SC28 software includes programs created by Spicer Consulting using LabVIEW from National Instruments. Copyrights This document copyright © 2020 Spicer Consulting. All rights reserved. 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.

  • Page 3: Table Of Contents

    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 ..............
  • Page 4 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 ......................

  • Page 5: About This Manual

    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.

  • Page 6: Conventions Used In This Manual

    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. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 7: Chapter 1 - Introduction To The Sc28 System

    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.

  • Page 8: Getting Started

    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.

  • Page 9: Connecting A Precision Microphone

     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. © Spicer Consulting, 2020...

  • Page 10: Adding Sensor Calibration Files

    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.

  • Page 11: How To Exit Sc28

    For full details see the SCPlot User Manual. Getting Started Start the SC28. The SC28 should start up in the task bar. Click the SC28 task bar icon to open the SC28 main window. The status should show Starting… and then Connected to SC28/SI with its serial number, firmware version and IP address.

  • Page 12: Getting Help

    Help is available in the following ways: Help <F1> • To get help, click the Help button or select Help for SC28 from the Help menu. • Tip strips appear when you move the pointer over the icons and sensor controls, providing additional information.

  • Page 13: Chapter 2 - Environmental Disturbances

    The methods and units of the specifications vary between manufacturers, but the SC28 is flexible enough to measure the parameters found in all mainstream manufacturers’ specifications. Magnetic Field Sources Power Frequency (50 or 60 Hz) magnetic fields are often produced by current- carrying power cables.

  • Page 14: Vibration Sources

    Changes in room temperature can cause drift of the image as different parts of the microscope expand or contract slightly. Air conditioning systems must be designed to keep temperature changes below a specified limit. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 15: Humidity

    Humidity For microscopes where the stage is cooled by liquid nitrogen, the humidity in the room must be kept low to avoid water from the air condensing and forming frost and ice. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 16: Chapter 3 - Setting Up Monitoring

    Chapter 3 – Setting up Monitoring Setup Steps The following steps are needed to set up the SC28 to monitor the environment of an electron beam instrument: 1. Check the Specifications 2. Define Position and Orientation 3. Set up Signals and Scales 4.

  • Page 17: Define Position And Orientation

    Lower and Upper bandwidths for each signal. Where possible, be guided by the microscope specification. The maximum upper bandwidth in the SC28 is 1 kHz. Bandwidths are also limited by the sensors in some cases. See Chapter 6 – Chart Recorder Controls for more details.

  • Page 18: Set Up Data Logging

    The SC28 provides two types of data logging files Chart and Spectrum. Each have their own folder, file name and file interval settings. In addition, the SC28 can automatically delete old log files to save disc space. See Chapter 7 - Data Logging Controls for more details.

  • Page 19: Chapter 4 - Signals And Scales

    Chapter 4 – Signals and Scales The SC28 provides 10 channels of data acquisition. In the SC28 Monitor, these signals may be displayed on 6 scales and in 3 display formats (Scope, Spectrum and Chart). Up to 14 different graphs may be displayed giving simultaneous display of the data as it is acquired.

  • Page 20: Scales And Ranges

    • It is not likely to find temperature or humidity out of range of the sensor. Scales and Ranges The SC28 provides unit and range settings for each scale. The User scale has a selectable sensor, depending on the user defined units available.
  • Page 21 The SC28 provides the following units and ranges by default. User-defined units may be added. See the User Defined Units section of Chapter 9 – Calibration for how to add user-defined units. SC28 Amplitude Ranges Scale Sensor Unit Ranges Magnetic...
  • Page 22 When you select dB units the Acoustic spectrum is forced to be RMS even if the Spectrum Mode is set to 0-Pk or Pk-Pk. The Chart mode for Acoustic is always set to RMS. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 23: Chapter 5 - Spectrum Analyser Controls

    The sweep time is the reciprocal of the frequency step, and so can be found by dividing the number of points by the frequency range:  = 1 / f = n / f © Spicer Consulting, 2020 SC28 User Manual...

  • Page 24: Window Function

    It broadens each narrow peak from one point to five points, but the height of the peak is accurate, even if the true peak falls mid-way between two points of the spectrum. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 25: Spectrum Mode

    Average mode computes the mean of the acquired spectra, in order to reduce noise levels. On a log scale, you can watch the noise reducing as each successive spectrum is included in the average. Peak mode keeps the largest © Spicer Consulting, 2020 SC28 User Manual...
  • Page 26 Spectrum log file duration divided by the Spectrum Analyser period. If clipping occurs while combining, the clipped results are included. The clip light indicates that the results may not be accurate. Clipping information is included in the log file. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 27: Chapter 6 - Chart Recorder Controls

    1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 In the SC28 Monitor, the maximum chart length is 3600 points, so it is always at least 1 hour. The chart display normally shows the current chart data log file as it is being built up.
  • Page 28 Displacement and velocity waveforms It is sometimes useful to chart position or velocity. The chart recorder provides this feature by integrating the accelerometer signal. This sets the lower 3dB Bandwidth to 1 Hz. © Spicer Consulting, 2020 SC28 User Manual...
  • Page 29 Peak value of the signals on display. RMS mode uses high-pass and low-pass filters to select the bandwidth of interest followed by a function that squares, low- pass filters and square-roots the signal to obtain the RMS. Pk-Pk mode uses an © Spicer Consulting, 2020 SC28 User Manual...
  • Page 30 At frequencies just below the minimum bandwidth, there is some unavoidable breakthrough of a rectified version of the signal. For smooth results, it is therefore best to set the lower bandwidth to a frequency where there is little activity. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 31: Chapter 7 - Data Logging Controls

    Data Logging control panel. The SC28 provides two types of data logging files Chart and Spectrum. Each have their own folder, file name and file interval settings. In addition, the SC28 can automatically delete old log files to save disc space.
  • Page 32 Start and Finish refer to the start and finish times of the data in the file. All date and time information, including the time zone, is derived from the PC running the SC28 program. The SC28 starts a new file at the file interval that you set. The following are available: Unit...

  • Page 33: Chapter 8 - Environmental Specifications

    Specification Editor, you return to the Select Specifications panel. If you did not change the name of the file, it will be automatically updated. If you create or rename files, then you have to load them explicitly. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 34: Specification Editor

    These specification files are re-loaded when you re-open that setup file. Specification Editor You can use the Specification Editor to create and edit specification files. See above for how to open the Specification Editor. © Spicer Consulting, 2020 SC28 User Manual...
  • Page 35 You can check the data in the table using Check Table on the Edit menu. If there are errors, a window appears, listing the errors. If there are no errors, nothing happens. You cannot save a specification that has errors. © Spicer Consulting, 2020 SC28 User Manual...
  • Page 36 The vertical mapping for dB units is always linear. The Specification file format is shown in Appendix 2 - File Formats. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 37: Chapter 9 - Sc28 Calibration

    Reset DC Sensor The Reset DC Sensor button is available on the Sensors tab only when a DC sensor is connected to the SC28/SI. If you move a DC sensor, you must reset it by © Spicer Consulting, 2020 SC28 User Manual...
  • Page 38 Reset DC button in the tool bar of the SC28 Monitor. The following window appears: Initially the DC sensor outputs are zero, while it internally zeros its output to the nearest 1 mG at the current X, Y and Z magnetic field levels. After that, the DC sensor outputs turn on and the software uses low-pass filtering to compensate for any residual offset.
  • Page 39 Add Sensors Sensors are made available for selection in the Calibration panel by adding their calibration files to the SC28 system. Click the Add Sensors… button. Have Calibration Files Spicer Consulting provides calibration files for sensors on a USB memory stick.
  • Page 40 The file dialog appears. Browse to the location of your calibration files, select the files you wish to add to the SC28 system and click OK. You can select all the files using <ctrl-A> (recommended), individual files using <ctrl-click> or a range of files using <shift-click>.

  • Page 41: User Defined Units

    Under the Units tab, you can enter user-defined units for use with the AUX input (or the MAG or MIC input of the Sensor Interface). For example, you might connect a Spicer Consulting SC22 Magnetic Field Cancelling System BNC output to the AUX input. The SC22 measures magnetic field and outputs 1.0 Volts per milliGauss with 10 kΩ...
  • Page 42 Voltage sensor. It is possible to use the AUX or MAG inputs. In the software, select the sensor and unit you have defined. The program displays and data logs the signal in the selected unit by dividing the input voltage by the size of the unit. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 43: Chapter 10 - Menu And Toolbar Functions

    Show the SC28 help file. About… Show brief information about the program. Calibration Tool Calibration <F2> Calibration is described in Chapter 9, SC28 Calibration. Specification Tool Specifications <F9> Specifications are described in Chapter 8, Environmental Specifications. Setup Files Open Setup <F3>...

  • Page 44: Data Logging Tool

    See Setup Files above. Resizing the Window You can re-size the window of the SC28 Monitor by dragging the edges or corners, by clicking on the Maximise button near the top right or by using Full Size on the Window menu.

  • Page 45: Autoscaling

    Zoom Area Zoom X, Zoom Y and Zoom Area select different ways of zooming in by dragging the mouse over the plot. Pan allows you to drag the data around the plot area. © Spicer Consulting, 2020 SC28 User Manual...

  • Page 46: Appendix 1 - Sc28 Specification

    Bits Input Range Resolution ±10V 2.44 mV Core System: SC28/SI - Sensor Interface (Ethernet-based) Inputs 3-axis magnetic field sensor VIBX, VIBY, VIBZ 3-axis vibration (3 x Wilcoxon 731A) Microphone (B&K 4190/2669L) BNC voltage input, DC coupled, ±10 V range, 100 k input impedance.
  • Page 47 1.5 Hz - 20 kHz Dynamic Range 110 dB (in this system) Noise Limit 20 dB (in this system) Accuracy ±1 dB 3 Hz - 20 kHz Temperature/Humidity Sensor: SC28/TH Sample rate 1 Hz max Performance Temperature Relative Humidity Dynamic Range 0 - 100 °C...

  • Page 48: Appendix 2 - File Formats

    (i=0; i<NumAxes; i++){ Axesi="Name=AxisName,Min=Min,Max=Max,Major=Major, Minor=Minor,Format=Format,Precision=Precision, Map=AxisMap"} Markers=NumMarkers for (i=0; i<NumMarkers; i++){ Markeri="Time=MarkerTime,Text=MarkerText"} Cursors=NumCursors for (i=0; i<NumCursors; i++){ Cursori="Name=CursorName,X=X,Y=Y,Signal=CursorSignal"} Horiz="Name=HorizName,Unit=HorizUnit,Map=HorizMap,Start=Start, Step=Step,Points=NumPoints" Signals=NumSignals for (i=0; i<NumSignals; i++){ Signalsi="Name=SigName,Unit=SigUnit,Range=SigRange,Display=SigDisplay, Position=SigPosition,Axis=SigAxis"} [Data] NumSignals,0 0,NumPoints-1 NumSignals-1,NumPoints-1 [End] © Spicer Consulting, 2020 SC28 User Manual...
  • Page 49 Normal type appears in the file. C-style for loops make repeated lines. Data values are separated by tabs. Italics are substituted as follows: Version Current version of SC28 Program Program that created the file (SC28) FileMode How the file was output (Logged) Date & Time Date and time data logging started SetupFile Name of program setup file (setup.sc28)
  • Page 50 MXclip..Aclip Clipping indicators for all channels (0=not clipping, 1=clipping) The Spectrum Analyser adds signals for displayed specifications, named Speci, where i goes from 0 to NumSpecs-1. Data values are set to NaN for frequencies outside the range of the specification. © Spicer Consulting, 2020 SC28 User Manual...
  • Page 51 BWupper Scale upper bandwidth MXclip..Hclip Clipping indicators for all channels (0=not clipping, 1=clipping) The SC28 Chart Datalog may format the horizontal signal data H0 to Hnp as an ISO 8601 compliant time stamp of the form: yyyy-mm-ddTHH:MM:SS+/-ZZ:zz where: Yyyy-mm-dd Date with 4-digit year, 2-digit month and 2-digit day of month...

  • Page 52: Specification File Format

    Default Folders By default, all executables, dynamic link libraries and originals of default setup files for SC28 1.0 are installed in one of the following folders. These files should not be altered. C:\Program Files\Spicer Consulting\SC28 1.0 (32-bit Windows) C:\Program Files (x86)\Spicer Consulting\SC28 1.0 (64-bit Windows)

  • Page 53: Appendix 3 - Units

    Appendix 3 - Units This appendix gives some general information about the units used in the SC28 software. Magnetic Field Units The SI unit for magnetic flux density, B is T (Tesla). 1 T is a strong magnetic field. The older unit G (Gauss) is often used.1 G = 10 mG (milliGauss), µT (microTesla) and nT (nanoTesla) are used for typical...

  • Page 54: Vibration Units

    The following table gives some conversions between vibration units at different frequencies. Frequency Displacement Velocity Acceleration µm µm/s µm/s µg’s 0.159 0.102 0.159 6.28 0.641 1.59 1.02 0.0159 62.8 6.41 15.9 0.01 10.2 0.00159 64.1 0.001 1000 1000 0.000159 6280 © Spicer Consulting, 2020 SC28 User Manual...

  • Page 55: Sound Level Units

    This has a much flatter response and is suitable for measuring the effect on equipment. The following table shows some example levels for the Radio Shack analogue sound level meters. Range (dB) Meter Reading SPL (dB) Pressure (Pa RMS) 0.063 0.63 © Spicer Consulting, 2020 SC28 User Manual...

  • Page 56: Appendix 4 - Window Functions

    0.5 is 0.215578948 is 1.932617187 is 1.286132809 is 0.38769531 is 0.03222656 © Spicer Consulting, 2020 SC28 User Manual...

  • Page 57: Index

    9 specification, environment, 16, chart recorder, 17, 27 microphone self check, 39 chart time step, 27 noise, 24 specification, SC28, 46 clipping, 19 number of channels, 17 spectrum analyser, 17, 23 combine, 25 number of points, 23 spectrum mode, 2525...

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