FAI of cell phone jammer should be done as per the company procedure

 So more and more money and personnel have been put into the commission process and commission control of cell phone jammer . 
Bandwidth: Do not know how to say, is to meet each resonant points about the width of the frequency. Passive testing on both sides of the peak point of the wave width. e.SAR: SAR refers to the ratio of radiation absorbed by the head of the organization, the lower the SAR value, radiation, brain, eyes absorb the amount of the less. The U.S. requires that SAR shall not exceed 1.6W/kg (per kg of body tissue absorbs radiation), the European 2W/kg. SAR test results is the maximum value measured when the cell phone to your ear. Antenna do theoretically SAR below in the mobile phone will be very small, because the antenna be far away from the big head. The international community generally believed that mobile phone radiation values less than 2.0 watts / kg, its minimal damage to the human body.
Do not set the mold parting line in the typing, but ran to the shell internal direction along the mounting surface of 0.4mm or so, or the entire run into the parting line, so that after assembly the other shell pressure live to see the flash in less than plating. keypad conductive rubber base convex height of 0.3 diameter φ2.0 (φ5dome),, diameter φ1.7 (φ4dome,), plus glue draft about 10 degrees. Boss DOME gap 0.05mm. If using a PC or hard materials, boss height can be more than 1mm. But try not to use hard contact, a lot of experience have shown that this case size is not easy to control, it is easy to go wrong. Key board in the XY direction on whether the proper positioning, the positioning holes unilateral gap 0.1mm. FAI of  cell phone jammer  should be done as per the company procedure.
The key board is whether the limit in the Z direction, the back support to avoid subsidence of the keyboard. The key board to do the former top pressure, prevent the keys from the lock or subsidence. Note that box of buttons, shell buttons with the draft, draft z direction with the surface parallel to the v-type, can not be made, otherwise the outside gap, while the interior has been interference. Leverage keycap edge of a width> = 0.5MM. Lever key with the shell surface hole unilateral clearance minimum 0.2mm. Keycap edge of leverage in the Z direction with the housing wall clearance can not be 0, otherwise they will be for moving space insufficient with keys. The DOME itself and the key board need to add DOME attached positioning hole diameter of 1mm. The shield cover cooling hole diameter 1mm. If the shielding cover or shield bracket plane gap, pay attention to the gap boundaries at the side of the cut through, or processing can not Another plane gap around the corner fight diameter 3mm hole or tear. The signal retained for the chairman platform will not be jammed by  cell phone jammer .