The sweeping frequency testing should be adopted as much as possible cell phone jammer

Testing of Main Indices of Signal Repeater

Testing concerning about the main indices of mobile communication signal repeater should consider the accuracy of testing and also the cost of testing and as well as possibility of easy and convenient operation of testing.

1. Testing of rated output power, maximum gain, gain adjustment range and AGC range of signal repeater

When testing the rated output power, the attenuation from output port of signal repeater to the input port of watt meter should be considered.

Many other indices should be tested at the power specified by the manufacturer of signal repeater, therefore, when the manufacturer determines the maximum output power, influence on other indices (such as the intermodulation, stray emission and so on) should be considered.

2. Testing of bandwidth, fluctuation in band and suppression beyond band of signal repeater

The sweeping frequency testing should be adopted as much as possible   cell phone jammer . The network analyzer (vector net and standard net) should be used or the frequency spectrum analyzer with tracking generator can be utilized. The latter one is recommended for its dynamic range is big and it can reduce the types of instruments to be tested so that the cost can be cut.

After connecting with the tracking generator, the center frequency should be adjusted to the center frequency of the signal repeater to be tested. The width of sweeping frequency should be adjusted to three times or seven times of band width of signal repeater to be tested (it is independent on the band width to be tested and magnification will be higher if the band width is narrow).

The output level should be adjusted to the input level of the signal repeater to be tested which is Lin   cell phone jammer . The reference level of the frequency spectrum analyzer should be adjusted to the almost full scale. The response curve of the filter will appear on the screen of frequency spectrum analyzer. The band width, fluctuation in band and suppression beyond band can be read with labels.