Stereo Scan 440 - DCU

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~I.~ Chapter 2 Operation -'--"=-,'Z ""'~~-~",..~~--~c ""'~~~""~c~ ~ A Check filament saturation about once a day. Saving conditions when you close down ensures that new values of filamenl current will be used when you restart the system. B As an aid to fast manual alignment, a useful facility is provided under Tools->links. This provides the ability to select auto-contrast, a particular scan speed, and crosshairs to be set when Ellliuion is pressed. C If only minor optimisation of the gun tilt is required. this can be achieved by pressing the Align icon with the left mouse button and use mouse adjustment to optimise the signal. 2.3.2. Setting EHT and Probe Current 1 Accelerating Voltage The accelerating voltage and probe current can be assigned to the mouse buttons from the Beam menu or by clicking on the kV icon. Whenever the accelerating voltage is changed it is important to check that the beam and the final aperture are correctly aligned. In addition to adjusting these parameters with a mouse it is possible to double click on the p~ter display (in the toolbar) which will bring up a dialog box allowing the value for the selected parameter to be entered from the keyboard (this applies to any parameter assigned to the mouse). The accelerating voltage must be set for the type of specimen under examination: - . For low atomic number or beam sensitive speci~, choose a voltage . between IkV to SkV For high atomic number specimens, a voltage of illV to JOkV is nonnal . For atomic numbers in between (say 20 to SO), a voltage of 10kV to . 20kV is best For X-ray analysis, the voltage is dictated by the elements under analysis The subject of selecting appropriate operating conditions for the specimens is explored further in Chapter 3 Advanced Opera/ion. Probe Current The probe current effectively conuols the spot size of the beam on the speci~n. Optibeam Auto Resolution mode (selected on the Beam ~nu) sets the probe current to give the best resolution. If auto resolution is left on then changes in Stereoscan 440 Operator Manual
ChalKer 1. Opentioo 2.-)7 , j.. - --.l - - ", magnification win result in changes of probe current, so it is advisable to enable auto brightness. Further guidance on selecting the correct probe current is given in the Chapter 3 Advanced Operation. Optibeam The Optibeam program takes the require~nts for probe current. working distance, etc and determines the optimum lens settings to achieve the best performance from the column. Usually the best performance is defined as the highest resolution, but Optibeam can be told to optimise for the greatest depth of focus instead. This is done by selecting Depth Mode on the Beam menu. 2.3.3. Adjusting the Aperture Oprimum imaging can sometimes depend on the correct choice of aperture size. The internal software model. Optibeam. continually calculates the best setup for the selected aperture. however it will sometimes recommend using a different aperture. This message is displayed in the Beam->Apertures menu. as Recommended Aperture =. If preferred. this infonnation can be displayed automatically on screen by switching off Suppress Aperture Warning. The four apertures installed (sizes as displayed in the Apertures menu) are all located on the Y axis of the aperture changer mechanism. To reach another aperture, simply rotate the Y micrometer either clockwise or counter-clockwise according to the direction of the required aperture - refer to the X and Y positions displayed in the Apertures menu. As the micrometer is rotated. the signal will disappear as the cunent aperture moves out of position. The signal returns as the next aperture moves into position. however there will either be much less or much more signal according to the change in aperture size. For this reason. it is sometiux:s easier if auto brightness is enabled during the change. Having located the aperture in position. click on the "radio button" next to the new current aperture selection and OK the menu. This ensures that Optibeam will continue to achieve the best column performance. Finally, it is necessary to make a fine adjustment to the aperture position to ensure that it lies exactly on the electron optical axis. Select a focused field of view at about lOOOx and switch on focus Wobble under the Beam menu. The speed and amplitude of the wobble can be adjusted from the operating panel that Stereoscan 440 Operator Manual
Page 2 and 3: All reasonable steps have been take
Page 4 and 5: Instrument Photographic Choice of I
Page 6 and 7: iv Contents Chapter 5 - Maintenance
Page 8 and 9: The specimen chamber of the Slereos
Page 10 and 11: The User Interface Overview The use
Page 12 and 13: 5. Panel Selection There is one oth
Page 14 and 15: B If B is pressed. the arrow keys m
Page 16 and 17: The top window, see Figure 1.3, pro
Page 18 and 19: Individual items can be selected or
Page 20 and 21: 1~1~ Chapter 1 Getting Started i '
Page 22 and 23: all the operating conditions of the
Page 24 and 25: 1-20 ~bapter 1 ~g S~ move the mouse
Page 26 and 27: FIgUre 1.10 Image of First Peak Set
Page 28 and 29: Chapter 2 This chapter contains the
Page 30 and 31: Chapter 1. Operation 2--3 " -- Scan
Page 32 and 33: Chapter 2. Operation 2.,.,5 ,- . ..
Page 34 and 35: , , Chapter 1. ~ - 2-- 7 ""a-uu"" 1
Page 36 and 37: 1. Admit air to the gun. Open the g
Page 38 and 39: Automatic Stage lnitialise The stag
Page 40 and 41: For LaB,:- 1 Press the Emission but
Page 44 and 45: 2-18 Chapter 1. Operation - - - - a
Page 46 and 47: 2-20 Chapter 2. Operation. 1 2 t Se
Page 48 and 49: 2-22 Chapter 1. Operation If the wo
Page 50 and 51: 2-24 Chapter 2 Operation The Zone T
Page 52 and 53: Quad Mode Quad mode is selected fro
Page 54 and 55: 2-28 Chapter 2 Operation . - -, , "
Page 56 and 57: On the histogram display there is a
Page 58 and 59: Panels A panel is a special kind of
Page 60 and 61: current text string). In addition t
Page 62 and 63: Micron Markers Two types of micron
Page 64 and 65: Graticule and Crosshairs Graticule
Page 66 and 67: HRRU Camera This sets the type of c
Page 68 and 69: 2..42 Cbapter 1. Operation ~ I It h
Page 70 and 71: current when the image was saved. T
Page 72 and 73: 2-46 Chapter 2 Operation The Clipbo
Page 74 and 75: Having now become familiar with the
Page 76 and 77: high a probe current, thus the acce
Page 78 and 79: , Chapter 3 Advanced Operation 3-5
Page 80 and 81: 3. The retractable backscattered el
Page 82 and 83: I~.." - Chapter 3 Advanced Operatio
Page 84 and 85: "".~-I Chapter 3 Advanced Operation
Page 86 and 87: " Chapter 3 Advanced Operation 3-13
Page 88 and 89: Non-Volatile, Non-Conductors If it
Page 90 and 91: The solvent is then allowed to evap
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Chapter 3 Advanced ~OD 3-19 -c - -
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Other Menu Features The display of
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Points and Steps In addition to the
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Confirm This instruction check that
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._~ Chapter c" ~ 3 Advanced Operati
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Remove Removing a macro from a libr
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The position in the list can be con
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Install The install option copies t
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Chapter 3 AdvancedOperati on 3-35 3
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I I PARAMETER I En"ECT OPTIMUM COMM
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4.5. Good Housekeeping, i.e. keepin
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Chapter -. 4 System Management - +3
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4.1.5. Directory Contents I \nGA i
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4.3. The User Directory Concept A u
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I this be reql!i~. File Types, e.g.
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6-12 Chapter 6 Fault Diagnosis The
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5-2 Chapter 5 Maintenance 5.1.2. Ai
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STEEL AND ST ~S STEEL, COPPER AND m
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5-6 Chapter 5 Maintenance Cleaning
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Cleaning the Aperture Assembly Vent
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PC Related Faults PC related proble
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6-4 Chapter 6 Fault Diagnosis , .".
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6-6 Chapter 6 Fault Diagnosis The I
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6-8 Chapter 6 Fault Diagnosis . 4.
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6-10 Chapter 6 Fault Diagnosis! "I
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This file contains the configuratio
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Please report the problem. F All..E
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Stereoscan 440 Operator Manual NVRA
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6-20 Chapter 6 Fault Diagnosis 4 WW
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Code numbers greater than 40 indica
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WINDOWSTM APPUCA nON ERROR When a W
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Introduction As new Window~ applica
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Appendix ~ The Stereoscan 440 PC! A
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" c., Appeudb C Expansion via the P
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Appendix D Reporting software probl
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Service Manager - SEM Harry M azal
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B-2 Appendix E Options- . Operation
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Controls Angular Measurement The an
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Angular Measurement Each measuremen
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The position of the box can be adju
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I Set the magnification to the requ
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Positioning the Poin~ In Move mode
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&14 Appendix E Options I II Image D
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~ AMaxB This function freezes the i
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Histogram Equalisation The histogra
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Overview The input LUT is used to p
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E-22 Appendix E Options Sawtooth Th
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A group box at the top left of the
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" The communication port used by th
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Selection I The signal mixing panel
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E- 30 Appendix E Options Select one
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E-32 Appendix E Qptions . . High Us
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. The stage Move window comprises a
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Keyboard Control The cursor (arrow)
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E-38 Ap~ ~ Options In addition Macr
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Grainl Grain2 actionedl I To indica
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The function is provided as part of
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Operation Selection Operation of th
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Stage Scan Invalid This indicates i
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E-48 Appendix E Options ~-",,-;,,~_
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Freeze This function will freeze th
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1.21 Trackerbal/ Introduction This
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Controls Display the pop up control
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Operation Configuration XRay Interf
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E-58 Appendix E Options 11_- X Ray
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Intensity Dot Map Set Up In dot map
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The Linescan data is displayed in a
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E-64 AppeDdjx E ~oos ... ~~ full sc
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Annotation A set of annotation labe
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2. 2.1 Stage Motorisation The stage
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Camera Image Select between Live, S
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If the box marked Fast is selected,
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Remove the Camera assembly from the
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~--~- ~- , -~~::~ '#:r: .TungsIen F
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.,, , or_~ :---1 ' ' --~... 'FG'-~-
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Figures 9,10,11,12 Emission Images
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Assembly Assembly . of the STEM det
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4. Select SCM Image from the Specim
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~ ~ ~ ~ E I I I I I I Stereoscan 44
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DOS, 4-1 Dose rate, 3-12 Dual magni
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1-4 Index Rotary pump Oil. 5-2 Oil
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Appendices s+Shift ff ~ I ARRO~ ~ys
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