Market Need Analysis of cell phone jammer

The slow-start circuit design of  cell phone jammer can effectively avoid the sparking phenomenon when switching on  cell phone jammer . When the defect diameter D ≤ 0.10mm and not continuous, it can not be considered defects, the number of do not count. Mentioned below refer to the number of undesirable defects on the bad side the number of defects. The human eye with the measured surface distance of 300 ~ 350mm. Each inspection takes less than 12S. View the desktop into the surface and 45 °; up and down turning left and right 15 °. Lighting: 100W cool white fluorescent light source from the measured surface 500 ~ 550mm (illumination to 500 ~ 550Lux). Check the quality of the appearance of the parts to meet the requirements; lenses correct mounting location, no warping and loose, and left and right tilt is not greater than 3 °; from the front of the lens area, face 90 ° ± 15 ° (left and right rotation) should not see the screen washer; when not in 90 ° ± 15 ° of visual display within the scope allowed to see the washer, but the washer to tidy; visual display up and down so do not see the offset, can not see the boot screen shows obvious tilt. (Requiring the display of the centerline and the centerline of the lens up and down between the offset of less than 0.2mm, left and right sides of the tilt is not greater than 3 °).  cell phone jammers  will protect the examination room and meeting room environment.
Power test display brightness uniformity and color consistency; shell before and after the shell gap between the uniform, and less than (design decorative line width +0.2 mm), uniform and less poor segment (segment design poor +0.15 mm); after the shell the gap between the battery cover and uniform, and less than (design decorative line width +0.2 mm), uniform and less poor segment (segment design poor +0.15 mm); and on the flip, the flip with a uniform gap between the shell , and less than (design gap +0.2 mm), uniform and less poor segment (segment design poor +0.15 mm); lens, with a keyboard with the gap between the shell evenly; the keys are functioning properly, and feel uniform; antenna must be tightened, the gap junction to close and uniform; the flexibility of the normal battery snaps, battery easily removable; label model is correct and in line with company requirements; location is correct, no tilt, no more than 5 ° of tilt; phone labels should be in Chinese or symbols, abbreviations represent the following: manufacturer, model, without Commission approval of Certificate No. (CMII), CE mark and the IMEI number (GSM standard), or the corresponding number (other formats).  cell phone jammer needs the maintenance and inspection.
With a sharp blade (blade angle of 15 ° ~ 30 °) in the test sample surface, designated 10 × 10 × 1 mm x 1 mm small-grids, each one marking paint should be deep and the bottom; the test area with a brush debris brush clean; with adhesion of 350 ~ 400g / cm 2 Tape (3M600 No. tape or equivalent) to be tested firmly stick to a small grid and use the eraser wipe hard tape to tape to increase the contact area with the measured area and intensity; hand to seize the tape at one end, the vertical direction (90 °) quickly ripped off tape, the same location two times the same test; results found: adhesion ≥ 4B requirements when qualified. 5B-crossed with smooth edges in the edge and crossed the intersection at no peeling paint; 4B-crossed the intersection in a small piece of paint off, and off a total area of less than 5%; 3B-in dash at the intersection of the edge and a small piece of paint off, and off 5% of the total area of ~ 15%; 2B-in and crossed the intersection at the edge of the paint off successful films, and the total area of 15% off ~ 35%; 1B-in and crossed the intersection at the edge of the paint off successful films, and the total area of 35% off ~ 65%; 0B-in and crossed the intersection at the edge of successful piece of peeling paint, and the total area of more than 65% off. The after service of one-year repair will be supplied for  cell phone jammer .
Note 1: If you use a UV paint, using a test method requires up to 300 cycles, using method two test requirements up to 500 cycles. Note 2: Under normal circumstances require the use of methods of a test method used only when the unconditional test may use a method of two for testing. With a cotton cloth dipped in ethanol (concentration ≥ 99.5%), wrapped in a dedicated head weight of 500g (including cotton on the head after the test area of about 1 cm 2), 40 to 60 beats / minute speed, about 20 mm stroke, wipe back and forth in the sample surface 200 cycles. Results found: After the test through the end of time to paint is not qualified. With a 2H pencil (Mitsubishi), whittled the cylindrical cartridge 400 mesh sandpaper and polished on after installed in a dedicated pencil hardness test on (the load exerted on the tip of 1Kg, pencil and the horizontal angle to 45 °), push the pencil slide forward about 5 mm long, were designated 5, then a pencil eraser marks will wipe clean. Results found: Check whether the product surface scratches, when a qualified below. First with cotton cloth to wipe clean the surface of the product, the Vaseline hand cream (or SPF8 sunscreen) coated on the surface of the product after product on the temperature inside the (temperature set at 60 ℃ ± 2 ℃, humidity set of 90% ± 2%), 48h after the products to keep out, wipe with a clean cotton cloth to cosmetics. Check the appearance of the product, and testing paint adhesion, abrasion resistance. Results found: no abnormal product surface, adhesion and wear resistance tested.  mobile phone jammer  has different kinds of functions for the detailed parameters are different.
Soaked in sweat after the non-woven surface attached to the product and sealed with a plastic bag, placed 48h at room temperature environment, it will wipe clean the surface of the product of the sweat, the appearance of the paint inspection, and testing paint adhesion, abrasion resistance . Results found: no abnormal product surface, adhesion and wear resistance tested. Note: sweat the ingredients for the 1.07% ammonia, sodium chloride 0.48%, 98.45% water. Place the sample in thermal shock chamber; first in -40 ℃ ± 2 ℃ low temperature environment to maintain 1h, the temperature inside the switch in 1min to +85 ℃ ± 2 ℃ high temperature environment and maintain 1h, 24 cycles were done (48h). After the test, checking the product's appearance, and test paint adhesion, abrasion resistance. Results found: no abnormal product surface, adhesion and wear resistance tested. Different adapters should be matched for different  cell phone jammer .