shielding effectiveness test without SEMS
You need at least two people to proceed in the measurement. One inside the shielded environment and one outside.
Four cases with generator, amplifier, spectrum analyzer and a couple of antennas. You need also coaxial cables to connect transmitting and receiving and the power supplies.
For each measure is necessary to generate the signal at a specific frequency and read it with the antenna and the spectrum analyzer inside the shielded room. After that you need to repeat the same procedure for all frequencies you want to test.
The calibration and repair of this testing equipment is a considerable cost because the system of measure is composed by five elements to test and eventually repair in a laboratory.
shielding effectiveness test with SEMS
You need only one operator to reed the measurement outside the shielded environment.
Only one case with the SEMS kit. With only this tool to assemble there is a significantly decreases of the installation time.
The measurement is more speed because whit the SEMS you can check automatically a lot of frequencies prestored.
You can calibrate yourself this instrument with the calkit function directly in the place where you have to measure.