The two test methods of flange coaxial method and shielded box method can be completed at the same time. The shielding box and the flange coaxial tester are combined into one, which improves the test efficiency and reduces the floor space. It can provide 300K～3GHz electromagnetic wave, which is convenient for various anti-radiation tests. Fabric anti-electromagnetic radiation performance tester Purpose: It is used to measure the electromagnetic shielding effectiveness of textiles. Comply with standards: GB/T25471, GB/T23326, QJ2809, SJ20524 and other standards. Instrument characteristics: 1. LCD screen display, full Chinese menu operation; 2. The conductor of the host is made of high-quality alloy steel, and the surface is nickel-plated, which is sturdy and durable; 3. The up and down mechanisms are driven by alloy screw rods and imported guide rails to make the conductor clamping surfaces accurately connected; 4. Test data and graphics can be printed out; 5. The instrument is equipped with a communication interface, after connecting to a PC, it can dynamically display pop graphics. Dedicated testing software can eliminate system errors (normalization function can automatically eliminate system errors); 6. Provide SCPI instruction set, and provide technical support for secondary development of test software; 7. The number of sweep points can be set, up to 1601. 8. The self-developed Meas&Ctrl measurement and control system includes: ⑴Hardware: multi-function circuit board for measurement and control; ⑵Software: ①V1.0 multi-function test software; ②Meas&Ctrl 2.0 multi-function measurement and control software. Technical Parameters: 1. Frequency range: shielded box 300K～30MHz; flange coaxial 30MHz～3GHz 2. Signal source output level: -45～+10dBm 3. Dynamic range: ≥95dB 4. Frequency stability: ≤±5x10-6 5. Linear scale: 1μV/DIV～10V/DIV 6. Frequency resolution: 1Hz 7. Signal purity: ≤-65dBc/Hz (partially 10KHz) 8. Level accuracy: ≤±1.5dB (25℃±5℃, -45dBm ～ +5 dBm) 9. Harmonic suppression ratio: ≥30dB (1MHz～3000MHz), ≥25dB ​​(300KHz～1MHz) 10. Directivity: ≥50dB (after vector calibration) 11. Power scan: -8dBm～+5dBm 12. Receiver power resolution: 0.01dB 13. Maximum input level: +10dBm 14. Input damage level: +20dBm (DC +25V) Receiver resolution bandwidth: 100Hz～20KHz 15. Characteristic impedance: 50Ω 16. Voltage standing wave ratio: <1.2 17. Transmission loss: <1dB 18. Phase resolution: 0.01° 19. Phase track noise: 0.5°@RBW = 1KHz, 1°@RBW = 3KHz (25°C±5°C, 0dBm) 20. Sample size: round: 133.1mm, 33.1mm, 66.5mm, 16.5mm (flange coaxial method) square: 300mm×300mm (shielded box method) 21. Dimensions: 1100mm×550mm×1650mm (L×W×H) 22. Environmental requirements: 23℃±2℃, 45%RH～75%RH, atmospheric pressure 86～106kPa 23. Power supply: AC 50Hz, 220V, P≤113W Scope of Supply: 1. One host; 2. One branded laptop; 3. One brand printer; 4. A set of samplers (one for each of the diameters of 133.1mm, 33.1mm, 66.5mm, and 16.5mm); 5. Four feedback leaflets for product quality tracking information; 6. A product certificate; 7. A product instruction manual.