Fabric Anti-Electromagnetic Radiation Performance Tester

Scope of Application

It is used for testing the electromagnetic shielding effectiveness of electromagnetic shielding materials such as textiles, plastic sheets, metal foils, surface coatings or platings of non-conductive materials, metal meshes, conductive films, conductive glasses, and conductive medium plates (using the coaxial method).

Criterios aplicables

GB/T23326, GB/T25471, ASTM D4935, SJ2054

Instrument Features

1. The instrument adopts the coaxial test method, with good transmission characteristics and high testing accuracy.

2. It can perform full-frequency scanning, list scanning, and point-frequency measurement.

3. It uses the internationally preferred coaxial test method to measure the shielding effectiveness of materials, with good transmission characteristics and improved testing accuracy.

4. The instrument automatically controls the emission and reception of signals, automatically collects and processes data, displays curves on the LCD screen, and prints test data with a micro printer, which is easy to operate.

5. The evaluation of the absorption and reflection performance of planar materials against electromagnetic waves can be obtained by calculating the measured parameters.

6. RS232 data interface, with computer software for curve display, data analysis, and storage.

7. It provides a USB interface and supports mobile data storage with a USB flash drive.

Parámetros técnicos

1. Signal Source:

   1.1 Test frequency range: 300 KHz - 3000 MHz

   1.2 Frequency stability: ≤ ±5×10⁻⁶

   1.3 Frequency resolution: 1 Hz

   1.4 Signal purity: ≤ -65dBc/Hz (at 10 KHz offset)

   1.5 Output level: -45dBm - +10 dBm

   1.6 Level accuracy: ≤ ±1.5dB (25°C ± 5°C, -45dBm - +5 dBm)

   1.7 Harmonic suppression ratio: ≥30dB (1MHz - 3000MHz), ≥25dB (300KHz - 1MHz)

   1.8 Directivity: ≥50dB (after vector calibration)

   1.9 Power scanning: -8dBm - +5dBm

   1.10 System impedance: 50 ohms

2. Receiver:

   2.1 Frequency range: 300KHz - 3000MHz

   2.2 Resolution bandwidth: 100 Hz - 20 KHz

   2.3 Dynamic range: ≥95 dB (RBW = 1 KHz)

   2.4 Maximum input level: +10dBm

   2.5 Input damage level: +20dBm (DC +25V)

   2.6 Port: Standing wave ratio ≤1.2

3. Phase Characteristics:

   3.1 Phase resolution: 0.01°

   3.2 Phase trajectory noise: 0.5° @ RBW = 1KHz, 1° @ RBW = 3KHz (25°C ± 5°C, 0dBm)

4. Transmit and Receive Frequencies:

   4.1 Transmit frequency: 20MHz - 1.3GHz

   4.2 Transmit frequency drift:<1000Hz

   4.3 Minimum hopping interval of transmit frequency: 1MHz

   4.4 Transmit output power: >13dBm

   4.5 Receive power dynamic range: +5dBm - -55dBm

   4.6 Receiver power accuracy: ±1dB

   4.7 Resolution: 0.01dB, receiver frequency test range: 10MHz - 3GHz

   4.8 Double-layer shielding effectiveness: >20dB

5. Specimen Dimensions:

   5.1 Circular: Diameter 180mm - 200 mm

   5.2 Square: 180mm×180mm - 200mm×200mm

   5.3 Specimen thickness: 0 - 5mm

6. Instrument Specifications:

   6.1 Working environment temperature and humidity: 0 - 40°C, 0 - 75%RH

   6.2 Power supply: AC220V ± 30V, 50Hz, 100W

   6.3 Overall dimensions: 70mm×50mm×75mm (L×W×H) (excluding computer)

   6.4 Weight: Approximately 75kg

Optional Instrument Configurations

1. One main unit

2. One branded computer

3. One branded printer