The tense producing task of cell phone jammer

High voltage testing of the cell phone jammer adapter
EMC chamber is built to simulate the open space, dark room in the open field and the NSA should be consistent for the standard error of ± 4dB; NSA measurement results with the theoretical value of the open field compared to the error within ± 4dB in the index qualified, in the darkroom electromagnetic radiation interference certification testing.
Test surface field uniformity: This indicator is carried out in the darkroom sensitivity electromagnetic radiation measurements have been made. The general manager promises that the bonus will be higher if the worker can complete the tense producing task of cell phone jammer. Sensitivity required to measure the device under test (EUT) at the specified field strength generated (3V / m ~ 10V / m), to examine whether the work will cause EUT performance degradation; EUT surface, as there is a certain range, so the area provides the EUT a 1.5 × 1.5m2 of the vertical plane, the plane requires strong play evenly, this is the test surface field uniformity. In practice, the surface evenly divided into 16 points, with isotropic field probes measure the field strength at each point, taking the value closest to the 12 values to delete the other four, 12 values, such as the difference between maximum and minimum less than 6dB, then that the test surface is uniform, the sensitivity of certified electromagnetic radiation can be detected.
Four. Shielded cabinet
Composition
The worker has to work in three shifts to accomplish all the orders of mobile phone jammer. Shielding shell: cold-rolled steel plate welded into the fully enclosed cabinet, after galvanizing and painting 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 of the door;
Filters: Power filter with wide suppression band and high insertion loss;