Philips CM12 User Manual
Philips CM12 (S)TEM
Alignment & Setup
Manual
Erwin Sabio Philips CM12 Alignment & Setup Manual Page 2
Erwin Sabio Philips CM12 Alignment & Setup Manual Page 3
Parts of the CM12
4
The Microscope
The Control Panels
The Specimen Holder
The Side Entry Specimen Chamber
Start-up Procedure
7
Powering up the Microscope
Saturating the Filament
Column Alignment
9
Centering the Beam
Alignment of Thermionic Gun
Condenser Aperture Adjustment
Condenser Astigmatism Correction
Sample Loading and Unloading
11
Mounting the Specimen
Inserting the Specimen Holder
Sample Image Adjustment
Optimizing Eucentric Height
Adjusting Rotation Center
Centering the Pivot Point
Removing the Sample
Obtaining the Image
14
Fine Tuning the Microscope
Capturing the Image
Power Down Sequence
15
Photo Credits
16
Table of Contents
Erwin Sabio Philips CM12 Alignment & Setup Manual Page 4
Figure 1 The Philips CM12 (S)TEM Microscope
1
Electron Gun
A filament tip (LaB6 in this case) that emits electrons
upon application of electrical current.
2
Condenser Aperture
Assembly
An area that houses the condenser aperture, control
knobs, and related circuitry.
3
Specimen Chamber/Holder
High vacuum tunnel where the specimen is inserted.
4
Objective Aperture
Assembly
An area that houses the objective aperture, control
knobs, and related circuitry.
5
Field Limiting Aperture
Assembly
An area that houses the intermediate lens aperture,
control knobs, and related circuitry.
6
Binoculars
Eyepieces used to view the projected image up close.
7
Viewing Window
Glass windows (another on the left side) where the
large phosphor screen can be viewed.
8
Mechanical Stage Controls
Two knobs that control the translational coordinates of
the sample image.
Parts of the CM12
The Microscope
Erwin Sabio Philips CM12 Alignment & Setup Manual Page 5
Left Control Panel
Figure 2 The Control Panel located to the left of the microscope column.
Right Control Panel
Figure 3 The main control panel on the right hand side of the microscope.
9
Intensity Knob
16
Emission Meter
10
Fine Adjustment Knob
17
High Tension Button
11
Screen
18
Filament Control Knob
12
Screen Control Buttons
19
Ready Button
13
Power Switch
20
Focus/Focus Step Knob
14
Magnification Knob
21
Multifunction Control Knob
15
Beam Shift Knobs
9
10
11
12
16
17
18
15
19
20
21
13
14
The Control Panels
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