1. Sobre una base sólida o banco de trabajo, instalado correctamente, el ambiente no tiene vibraciones ni medios corrosivos;
2. The fluctuation range of the power supply voltage should not exceed ±10 percent of the rated voltage, the power supply of the testing machine should be reliably grounded, and the frequency fluctuation should not exceed 2 percent of the rated frequency;
3. La temperatura ambiente es de 10 a 35 grados y la humedad relativa no supera el 80 por ciento.
