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How to test the shielding effect of frequency jammer

How to test the shielding effect of frequency jammer

  • 2022-11-26
Before installing the frequency jammer, it is necessary to test the shielding effect. After testing, it can be determined whether the frequency jammer meets the shielding requirements of the whole conference room, and the number of shielding devices needed in the conference room can be determined.

Before testing the frequency jammer, you need to prepare the screwdriver, patch panel, herringbone ladder and other common tools needed for the test, as well as the mobile phones of three different operators. If there are professional technicians on site, it is also necessary to equip professional testing equipment of spectrometer.

During the test, find the nearest AC 220V power supply socket, connect the patch cord board, and transfer the patch cord board to the place where the frequency jammer is placed. The place where the conference room is placed should be placed as close as possible to the wall near the window at both ends of the conference room, and try to place the frequency jammer higher. If the site conditions are limited, it can also be placed directly on the conference table, and be careful not to place it directly on the ground. At this time, power on the signal shield and turn on the switch.

According to the environment of the conference room, choose the other end of the conference room, or choose the position opposite to the frequency jammer, and leave the phone on the desktop for 1-2 minutes. At the same time, turn on the spectrometer on the desktop where the phone is placed to detect whether each frequency band of the shield signal is outputted normally. After the phone has been standing for 1-2 minutes, you can check whether there is a signal displayed on the phone. If there is no signal displayed, it indicates that the phone has been shielded at this location. If there is a signal displayed, you can try to make a call or use data to access the Internet. If it cannot be used normally, it means that the number of signal cells displayed on the mobile phone is false. In fact, the mobile phone cannot complete the call and access the Internet. If you can use the mobile phone to make a call or use data to access the Internet normally, it means that the mobile phone is not shielded at this location, and you need to move a distance towards the frequency jammer, Then repeat the above operation until the phone is shielded.

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