ROUTINE ALIGNMENT PROCEDURES FOR PHILIPS CM-20 TEM

The following protocol is not intended to be specific. It is intended to be used as a mean to refresh one’s memory in carry out step by step procedures which are necessary to obtain reasonably good results with the transmission electron microscopes. More specific information can be obtained from the instruction manual from the Microscopist in Charge or the Center Director. Please do not hesitate to ask about anything you do not understand.

I.Before Starting, Verify:

(1)Check log book. Enter your name in the log book before any action on the microscope. Note cumulative hours on filament and past difficulties. Note: You must have your name on the reservation.

(2)Push PANEL DIM and turn DATA DIM knobs in to turn on display.

(3)Ascertain vacuum in good condition by press VACUUM on the screen. IGP<25. UHV, HIVAC (under vacuum system) are lit.

(4)Fill cold trap with liquid nitrogen (LN2 cylinder located outside the TEM room).

(5)All apertures out (levers should be to the right) except condenser aperture.

(6)Tilt indicator is at 0o (TILT) and 11o (HOLDER) degree, respectively.

(7)Specimen holder position at 0 (right) and 10 (left) position.

II. To Apply High Voltage:

Normally the microscope is in standby condition with HV on. Check high tension LED (green light). If it is on, go to step III. If it is not, you need to turn on the voltage.

(1)Press MODES and TEM to enter the TEM bright field page.

(2)Press PARAMETERS on the TEM bright field page.

(3)Select Emission 1 (or the default number) and High Tension 20 kV using soft keys. If the microscope has been used, then set at 200 kV (see below),

(4)Make sure IGP<25 on vacuum page.

(5)The following procedures (step 5 through 8) are applied after changing a new filament or the accelerating voltage has been off for some time (a few days). If the microscope has been continuously used, then make sure the setting is at 200 and push HIGH TENSION to turn on the accelerating voltage. Go to step III (to apply filament current) after the HT has stabilized (i.e., Emission meter is stable).

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Philips CM-20 manual Before Starting, Verify, II. To Apply High Voltage
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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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