ASTM D4935 Fabrics Electromagnetic Radiation Resistance Performance Tester

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

≤ -65 dBc/Hz (offset at 10 KHz)

1.5 Output level

-45 dBm to +10 dBm

1.6 Voltage accuracy

≤ ± 1.5 dB (25℃ ± 5℃, -45 dBm - +5 dBm)

1.7 Harmonic suppression ratio

≥ 30 dB (1 MHz - 3000 MHz), ≥ 25 dB (300 KHz - 1 MHz)

1.8 Directionality

≥ 50 dB (after vector calibration)

1.9 Power Scan

-8 dBm to +5 dBm

1. System impedance

50 ohms

2. Receiver: 2.1 Frequency Range

300 KHz - 3000 MHz

2.2 Resolution Bandwidth

100 Hz - 20 KHz

2.3 Dynamic Range

≥ 95 dB (RBW = 1 KHz)

2.4 Maximum Input Level

+10 dBm

2.5 Input Damage Level

+20 dBm (DC +25V)

2.6 Port: Return Loss

≤ 1.2

3. Phase Characteristics: 3.1 Phase resolution

0.01°

3.2 Phase trajectory noise

0.5° @ RBW = 1 kHz, 1° @ RBW = 3 KHz (25℃ ± 5℃, 0 dBm)

4. Transmission and Reception Frequency: 4.1 Transmission frequency

20 MHz - 1.3 GHz

4.2 The emission frequency drift

less than 1000 Hz

4.3 Transmission Frequency: The minimum frequency jump interval

1 MHz

4.4 The transmission output power

greater than 13 dBm

4.5 Reception power dynamic range

+5 dBm to 55 dBm

4.6 Receiver Power Accuracy

± 1 dB

4.7 Resolution; Receiver frequency test range

0.01 dB; 10 MHz - 3 GHz

4.8 Double-layer shielding effectiveness

> 20 dB

5. Sample size: 5.1 Circular

Diameter 180mm - 200mm

5.2 Square

180mm × 180mm - 200mm × 200mm

5.3 Sample thickness

0 - 5 mm

6. Instrument Specifications: 6.1 Working environment temperature and humidity

0 - 40℃, 0 - 75% RH

6.2 Power Supply

AC 220V ± 30V, 50Hz, 100W

6.3 Dimensions (excluding the computer)

70mm × 50mm × 75mm (L × W × H)

6.4 Weight

Approximately 75 kilograms