Whenever the college entrance examination, high school entrance examination or College English Test Band 4 and Band 6, the exam jammer, as an important weapon to maintain the fairness of the test, ensure the stability of the exam and prevent candidates from cheating, will work throughout the entire test process. However, there are still a small number of people who, out of personal desires, try to evade the protective measures in the examination room, and even resort to some extreme destructive behaviors. So how can the exam jammer prevent man-made sabotage?
Usually, during various types of examinations, the competent unit of the examination has two ways when using the jammer in the examination room. The first is to use a desktop jamming device, which is distributed to the invigilator before the exam or distributed to each exam. In the classroom, after the exam is over, it will be recycled uniformly. This method will bring some problems: the distribution and recovery process of the jammer in the examination room is time-consuming and laborious, and the installation and use are relatively casual. Some invigilators place the equipment directly on the podium, and some place it on the stool. Or on the ground, because the interfering device must be powered on before it can be used, it is necessary to connect the main unit of the device to the power socket with an AC power cord, so this method is very irregular. There is also a very important point: the process of frequently distributing and recovering exam jammers will inevitably cause damage and damage to the equipment.
Another way is to use a wall-mounted exam jammer, which means that the jamming device is installed in the test classroom in advance, and it only needs to be turned on when the test starts. This installation method is more standardized and safe, and since the installation height will be slightly higher than the upper edge of the blackboard, it is more effective in preventing man-made damage.
From the analysis of the methods of artificially destroying the jammers in the examination room, the most common ways of destruction are: unplugging the antenna of the interfering device, unplugging the power cord of the interfering device or the network cable for network communication, etc. In order to effectively prevent these damage methods, the current mainstream exam jammers basically adopt the method of building in the antenna, that is, the device is made into a whole shell and installed in a closed manner, and the antenna cannot be directly contacted from the outside. And the SMa-818B5 exam jammer specially designed by Nanjing Bokang Electromechanical Technology Co., Ltd. for the exam environment has achieved the purpose of concentrating the switches, power lines, network communication lines, etc. of the equipment in a concealed installation box. This makes the level of protection against vandalism has been further improved!
