5G equipment must work reliably in a wide range of environmental conditions. From development to field deployment, environmental testing is essential to ensure equipment meets global telecom standards and operator requirements. These tests simulate real-world conditions such as extreme temperatures, humidity, dust, water, vibration, and corrosion. Macro base stations, micro base stations, and outdoor integrated base stations installed on towers, rooftops, and mountaintops; outdoor communication cabinets or power cabinets located along roads, in residential areas, and beside highways; 5G or 6G antennas, RF modules, and connectors; 5G or 6G smartphones and home 5G routers; as well as in-vehicle communication units and antennas all require environmental test chamber testing to verify their service life and long-term reliability.
LIB Industry provides complete environmental test solutions for 5G communications equipment, covering temperature and temperature cycling, thermal shock, temperature and humidity, vibration and shock, dust and water ingress (IP), salt spray corrosion, and integrated RF shielding with temperature testing. LIB environmental test chambers are designed in accordance with international and telecom standards such as IEC 60068, ISO 16750, IEC 60529, ISO 20653, NEBS, MIL-STD-810, and industry-specific requirements. These solutions support testing at component, subsystem, cabinet, and full system levels, enabling manufacturers and operators to verify safety, performance, and durability of 5G equipment installed in indoor, outdoor, roadside, rooftop, and extreme environments, and to ensure compliance with global standards throughout the product lifecycle.
Standards: IEC 60068 / ISO 16750-4
a) Purpose: Check if devices like power units, amplifiers, filters, and control modules work reliably in extreme heat or cold.
b) Method: Samples are stabilized at room temperature, then placed in a temperature chamber. The temperature is raised or lowered at a controlled rate to the desired limit (commonly -40 °C to +85 °C, or up to -55 °C / +150 °C for certain devices).
c) Dwell time: Usually 1–4 hours at each temperature.
d) Acceptance: No cracking, no functional failure, all key parameters remain within limits.
a) Purpose: Test thermal durability by repeatedly cycling between low and high temperatures to identify fatigue or material stress.
b) Method: Follow standard-defined temperature cycles; maintain each extreme until thermal equilibrium.
c) Cycles: Typically 30–300.
d) Acceptance: Device continues to operate correctly; no material or connection failures.
a) Purpose: Detect failures caused by rapid temperature changes.
b) Method: Move samples quickly between hot and cold chambers, with dwell times at each extreme.
c) Typical range: -40 °C / -55 °C to +125 °C / +150 °C; transition time ≤3 s for air-to-air type.
d) Acceptance: No structural damage; normal operation maintained.
Standards: IEC 60068-2-30
a) Purpose: Evaluate device performance under hot and humid conditions that may cause corrosion, insulation problems, or material degradation.
b) Method: Devices are placed in a temperature-humidity chamber with steady or cyclic conditions. Temperatures range from 25 °C to 65 °C with 85–95% relative humidity.
c) Operation: Samples can be powered on, intermittently on, or off, depending on test requirements.
d) Acceptance: Devices function normally; no corrosion or material failure.
| Standard | IEC 60068-2-30 — Damp Heat Test Chamber |
| Test Objective | To evaluate the resistance of communication equipment to cyclic temperature and high humidity, including condensation effects |
| Test Temperature Range | +25°C to +55°C |
| Relative Humidity | Up to 95% RH |
| Number of Cycles | 2 to 6 cycles |
| Dwell Time | ≥ 12 h per cycle |
| Temperature Change Rate | ≤ 1–3°C/min |
| Test Duration | 24 h to 96 h |
| Test Condition | Equipment unpowered or powered-on, as specified by product standard |
Standards: NEBS GR-63 / IEC 60068
a) Purpose: Ensure mechanical reliability of 5G equipment during shipping, installation, or seismic events.
b) Method: Apply horizontal and vertical vibrations, shocks, and transport simulations to racks, cabinets, and outdoor units.
c) Acceptance: No loose parts, no mechanical failures, normal operation maintained.
Standards: IEC 60529 / ISO 20653/ DIN 40050-9/ UL 50E/ SAE J1455/ JIS DO207/ MIL-STD-810H/ SO 16750/ LV 124/ SAE J575/ JIS D 0203/ JSS 55555/ GMW16001
a) Purpose: Test device resistance to dust, rain, water jets, and immersion.
b)Water Protection Test Chambers：
IPX1: Drip rate 1 mm/min, 10 min, specimen rotates at 1 rpm
IPX2: Same drip rate, 15° tilt in four directions, 10 min
IPX3: ±60° oscillation, φ0.4 mm holes, 0.07 L/min per hole
IPX4: ±180° oscillation (splashing water)
IPX5: 6.3 mm nozzle, 12.5 ± 0.625 L/min, 30–100 kPa, 2.5–3 m
IPX6: 12.5 mm nozzle, 100 ± 5 L/min, 100 ± 5 kPa, ≥ 3 min
IPX7 – Immersion depth up to 1 m for 30 min; simulates rainfall and splash scenarios.
IPX8 – Simulated immersion up to 50 m (5 MPa hydrostatic pressure); suitable for flood or diving conditions.
IPX9K: 8000–10,000 kPa water pressure, up to 88 °C
MIL-STD Rain Spray Test Chamber: Complies with MIL-STD-810H (Method 506.6), providing blowing rain and intensified rain testing with air speed ≥ 18 m/s, rainfall rate ≥ 1.7 mm/min, nozzle pressure 276 kPa, and a rotating turntable at 1–7 r/min to evaluate enclosure sealing and functional reliability under severe rain exposure.
c) Dust Protection Test:
Dust ingress tests are conducted using standardized dust chambers with talcum powder.
IP5X: limited ingress permitted
IP6X: no dust ingress
MIL-STD Dust Test Chamber: Complies with MIL-STD-810G, providing blowing dust and blowing sand tests with dust air velocity 1.5–8.9 m/s and concentration 10.7 ± 7 g/m³ for particles < 150 μm, and sand air velocity 18.0–29.0 m/s with concentrations up to 2.2 ± 0.5 g/m³ for particle sizes 149–850 μm, to evaluate enclosure sealing and durability under severe dust and sand environments.
c)Acceptance: Device remains functional; no water or dust ingress affects performance.
Standards: ISO 9227 / ASTMB 117/ ASTM G85/ JIS Z 2371/ SAE J2334/ Ford CETP / VW PV1210 / GM 9540P/ ISO 9223/UL 199 / UL 852/ISO 4524 / ASTM B604/IEC 60068/IEC 61701/ASTM D610 /ISO 2409
a) Purpose: Assess corrosion resistance of outdoor cabinets, connectors, and metal parts exposed to coastal or winter conditions.
b) Method: Expose samples to neutral or accelerated salt fog cycles, possibly combined with humidity or temperature cycles.
c) Acceptance: No penetration corrosion; all connections and materials remain functional.
Standard Item | ASTM B117 -Salt Spray Test |
Prepare salt solution | 5% ±1 NaCl |
Collecting solution pH | 6.5–7.2 |
Salt spray chamber temperature | 35±1.5°C |
Mist flow rate at horizontal collection area | 1.0–2.0 ml/h/80㎡ |
a) Purpose: Evaluate 5G/6G signal performance of mobile phones and wireless devices under controlled RF shielding conditions combined with temperature stress.
b) Method: Use an LIB RF shielding test chamber integrated with a temperature-controlled environmental chamber to measure signal strength, stability, and transmission performance across defined temperature ranges.
c) Acceptance: 5G/6G signals remain stable, with no abnormal attenuation or communication failure under all specified temperature conditions.
By combining temperature, humidity, vibration, dust, water, and corrosion tests, LIB environmental test chambers provide a complete solution for 5G communications equipment. They support testing at component, subsystem, and full system levels, ensuring reliability, safety, and compliance with global standards.
