Philips CM-20 manual Iv Insertion and centering objective aperture

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(5)Change camera length (by changing MAGNIFICATION knob) to 44.0 mm.

(6)Realign the diffraction pattern.

(7)Repeat steps 4 to 6 until the transmitted spot remains at (near) the center while changing camera length between 44.0 mm to 3.2 m.

(8)Deactivate ALGN, and depress D to get out of diffraction mode.

(iv)Insertion and centering objective aperture

(1)Move to the edge of the sample.

(2)Make sure aperture is out.

(3)Press D to get to diffraction mode.

(4)Put objective aperture in (lever to the left)

(5)Select aperture size (the second largest, 40 microns, is usually good)

(6)Center aperture around transmitted beam using knobs on aperture

(7)Press D to get out of diffraction mode.

(D)Astigmatism Correction of Objective Lens (section 2.5.4 in TEM manual):

Astigmatism of objective lens appears as an image blurring phenomenon which one image is accompanied by another different-focus image at right angles to each other. Namely, because of asymmetrical focus, an image does not become sharp and appears to drift in one direction. Under this condition, exact focusing is impossible. Hence, for recording a quality micrograph, it is indispensable to correct astigmatism of the objective lens.

Three techniques (for correcting objective lens astigmatism) are commonly used depend on the magnification and material.

First Method (for low magnification images, <100kx)

(1) Find a suitable size of hole in a holey carbon or any sample.

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Contents II. Specimen Exchange General CommentsIf Pictures taken If no pictures takenPage II. To Apply High Voltage Before Starting, VerifyIII. To Apply Filament Current Center Filament Image and Alignment of Condenser System Voltage Center Alignment Alignment of Imaging SystemIii Intermediate and Project Lens Alignment Ii Current Center Alignment OptionDAstigmatism Correction of Objective Lens .5.4 in TEM manual Iv Insertion and centering objective apertureFinal Comments VI. Computer Alignment and Astgmatism Correction for 200 kV

CM-20 specifications

The Philips CM-20 is a dynamic and innovative multimedia speaker system that enhances the audio experience for users yearning for rich sound quality and versatile functionality. Designed with modern aesthetics and cutting-edge technology, the CM-20 is ideal for home entertainment setups, providing user-friendly features that cater to audio enthusiasts and casual listeners alike.

One of the standout features of the Philips CM-20 is its powerful audio output, delivering deep bass and crisp highs. Its advanced speaker design includes well-engineered drivers that ensure a balanced sound profile, making it suitable for various audio genres, from classical to contemporary. The system is equipped with a built-in amplifier, which optimizes performance and ensures minimal distortion even at higher volumes.

Connectivity is a key aspect of the CM-20. It boasts multiple input options, including Bluetooth, USB, and RCA. This allows users to easily connect a variety of devices, such as smartphones, tablets, and computers, enabling seamless streaming of music. The Bluetooth capability is particularly noteworthy, as it permits users to enjoy wireless audio playback without the hassle of tangled cords.

The user-friendly interface of the Philips CM-20 is another highlight. It features intuitive controls that make it easy to adjust volume, bass, and treble settings, allowing users to customize their audio experience to their personal preferences. Additionally, the speaker system includes a remote control for added convenience, enabling users to manage playback from a distance.

In terms of build quality, the CM-20 combines durability with sleek design. Its compact size makes it easy to integrate into any living space, while the aesthetically pleasing finish enhances the overall décor. The system is built to last, providing a robust solution for long-term use.

Another key characteristic of the Philips CM-20 is its energy efficiency. The speaker system is designed to minimize power consumption without compromising performance, making it an eco-friendly choice for audio lovers.

In summary, the Philips CM-20 stands out with its powerful audio capabilities, versatile connectivity options, user-friendly controls, and appealing design. It represents a great addition to any home audio setup, providing an enjoyable listening experience suitable for any occasion. Whether for casual use or dedicated listening sessions, the CM-20 is engineered to impress.
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