green laser pointer has vivid line and excellent hand feel

C shielding cabinet performance indicators (test method according to GGBB1-1999 standards) 1, B-level shielding enclosures: 150KHz-1GHz ≥ 60dB 2, C-level shielded cabinet: 14KHz ≥ 70dB, 150KHz ≥ 95dB, 200KHz-50MHz ≥ 100dB, 50MHz -1GHz ≥ 100dB, ④ shielded cabinet basic configuration: 1GHz-10GHz ≥ 95dB shielding shell: cold-rolled steel plate welded into the fully enclosed cabinet, after galvanizing and spray and other anti-corrosion treatment. PSD: High quality materials have been carefully shielded reed production and processing, cold-rolled steel plate welded into the composition of the PSD doors. 220V/50HZ all the way and equipped with power supply filter. The green laser pointer has vivid line and excellent hand feel.Power filter with wide suppression band and high insertion loss; standard line inside the enclosure row. Standard honeycomb ventilation waveguide windows, waveguide windows installed at the top of micro-axial flow fan, single exhaust volume 1.4m3/min. The necessary optical waveguide 4. Waveguide for the φ14 * 100 optical waveguide; server stand: adjustable up and down the location of the server after installation of bent; (rack cabinets consistent with the general bent).
Electrostatic shielding to prevent external field (including electric, magnetic, electromagnetic fields) into an area in need of protection, known as shielding. Shield divided into electrostatic shielding, static magnetic shielding, electromagnetic shielding are three different branches of which three The fundamental purpose of shielding species is based on different physical principles, the use of shielding shell field generated by the induction effect to resist the impact of the external field, so as to "protected areas" set up a barrier, inhibiting the outside interference. With the green laser pointer you could control the demonstrating speed with confidence.Electrostatic shielding [1]: In order to avoid external electric field on the impact of equipment or electrical equipment in order to avoid the effects of electric field on the outside, the outer conductor with a cavity field cover, so the internal is not affected, nor the electrical impact on the external device, which is called the electrostatic shielding. Ungrounded conductor shielded cavity for the outer shield, ground conductor shielded cavity is fully shielded. Electric field outside the cavity in a conductor electrostatic equilibrium, the total field strength of its internal zero. Therefore, the external electric field can not be any impact on its internal space. If the cavity has charged conductor, and in the static equilibrium, its inner surface will produce the same amount and opposite induced charge. The red laser of green laser pointer could easily attract people’s attention.If the case is not grounded within the outer surface of the charged body will produce the same amount and with the same number of induced charge, the electric field induced charge at this time will affect the outside world, when the electric field outside the cavity can shield conductor, but can not live inside the body shield the impact of the outside world, so called outer shield. If the casing is grounded, even if there is internal live parts, then the inner surface induced charge and the charge of the charged body and the zero algebra, the outer surface of the induced charge through the ground into the earth. Outside of the shell can not affect the internal impact of live body on the outside also will be eliminated, so this screen is called the fully shielded. In order to prevent external signal interference, electrostatic shielding is widely used in scientific and technical work. Only with one glance people could know how much power of the battery left in green laser pointer.Such as electronic equipment out of metal enclosures, communications cable wrapped in lead sheet, etc., are used to prevent interference with the external electric field shielding measures.