Glossary

important standards both derived from regulations originally laid down by Swedish authorities.

MPR-II

The standard originally proposed by the Swedish National Board of Measurement and Testing. It set maximum levels of electromagnetic radiation emitted by monitors, and has now been adopted as a world standard. MPR-II defines maximum permitted electrostatic, magnetic and electric field levels measured at a distance of 50 cm from the center of the monitor (see table).

TCO

In 1991, the Swedish Tjänstemannens Central Organization (TCO, Swedish confederation of Professional Employees ) set a standard even more severe than MPR-II, especially for alternating electric fields (AEF). The TCO standard is more severe since not only are the permitted field levels reduced compared with MPR-II, but the measuring distance is also reduced (see table).

Electromagnetic radiation standards

EMI (Electrical Magnetic Interference)

The electrical and/or magnetic radiation coming from the working electrical or electronic equipment.

EMS (Electrical Magnetic Sustainment)

The ability of electrical or electronic equipment to function properly in the environment with electrical and/or magnetic interference.

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F

Flicker

Very rapid variations in picture intensity caused by the finite time required for the electron beam to scan a picture onto the screen. Two kinds of flicker occur: line flicker caused by the electron beam scanning-in each line of the picture; and frame flicker (or field flicker if the picture is interlaced) caused by the frame repetition rate of 50 frames/second. Frame flicker is noticeable with GUI and DTP software (which have a light background), and can be very disturbing, especially for those who work regularly with displays - contributing to eye strain, headaches, visual blurring, stress, etc. The

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Philips 109B user manual Flicker, Mpr-Ii

109B specifications

The Philips 109B is a notable product in the realm of computer monitors, particularly significant during its time for delivering a solid blend of functionality and affordability. Designed primarily for office and general computing use, the Philips 109B stands out as a reliable choice for users looking for a dependable display solution.

One of the key features of the Philips 109B is its display size. With a 19-inch screen, it strikes a balance between providing ample screen real estate for multitasking while still being compact enough to fit into various workspace setups. The screen resolution of 1280 x 1024 pixels ensures adequate clarity for text and graphics, making it suitable for everyday tasks like word processing, browsing, and even light graphic design.

The monitor utilizes CRT (Cathode Ray Tube) technology, a standard in earlier generations of monitors, which contributes to its deep color reproduction and high refresh rates. Users benefit from a refresh rate of up to 85Hz, significantly reducing flickering and providing a smoother visual experience, particularly during prolonged use.

In terms of ergonomics, the Philips 109B features a tilt-adjustable design, allowing users to customize the angle of the screen to their preference, thus enhancing comfort during extended viewing sessions. The monitor's build quality is robust, reflecting the durability often associated with Philips products, which is crucial in an office environment where reliability is paramount.

Connectivity is another strong point for the Philips 109B, equipped with connectors that support conventional VGA interfaces. This makes it compatible with a wide range of computers and peripherals, ensuring easy integration into existing setups without the need for additional adapters or converters.

Moreover, the monitor includes various color settings, allowing users to adjust their viewing experience according to their personal preferences, which can be particularly beneficial for graphic work or video editing where color accuracy is important.

Overall, the Philips 109B exemplifies a practical, user-friendly monitor that caters to a variety of computing needs. Its combination of size, resolution, ergonomic features, and solid build quality makes it a commendable choice for users seeking a functional monitor without unnecessary frills. While newer technologies have emerged since its popularity, the Philips 109B remains a testament to the reliable design and engineering that Philips is known for.