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DANGER
WARNING
CAUTION
DANGER indicates a situation which, if not being avoided, will lead to
personal injury or equipment damage.
WARNING indicates a situation which, if not being avoided, will lead to
personal injury or equipment damage.
CAUTION indicates a situation which, if not being avoided, will lead to
minor or moderate personal injury or equipment damage.
ATTENTION indicates an important information rather than a danger.
NOTE indicates information about the instrument and its operation.
1.2.1 Operation status and position
Before instrument operation, please pay attention to the followings:
1)
Unless otherwise indicated, the environment where the instrument is operated shall reach
Grade 3 according to GJB3947A-2009. Non-working temperature: -40°C - +70°C; working
temperature: 0°C - 50°C; relative humidity: (5%-95%) ±5%RH; random vibration: Frequency 5 -
100 Hz, PSD 0.015g
2
/Hz; frequency 100 - 137Hz, slope -6dB; frequency 137 - 350Hz, PSD
0.0075g
2
/Hz; frequency 350 - 500Hz, slope -6dB; frequency 500Hz, PSD 0.0039g
2
/Hz; function
impact: 20g half-sine shock; drop when inclined: Taking one side as the fulcrum, lift the opposite
side of the base by 10cm to let it free fall on the test bench.
2)
Do not place the instrument on a surface with water or an unfixed item such as a car, cabinet,
table or others not meeting the weight condition. Please place and fix the instrument reliably on the
surface of a solid object (e.g. anti-static workbench).
3)
Do not place the instrument on the surface of a radiating object (e.g. radiator). The ambient
temperature in which the instrument works should not exceed the value given in the section
regarding description of relevant indicators of the product. Overheating of the product will result in
electric shock, fire and other hazards.
4)
Warm-up: in the event of cold start, warm up the instrument for 30min; at a stable ambient
temperature, warm up for 2h to reach internal temperature equilibrium. Warm up the instrument by
keeping it at ambient temperature for 2h, and perform calibration, then all the performance
indicators shall be satisfied.
1.2.2 Electrical safety
Electrical safety precautions of the instrument:
1)
Before turning on the instrument, ensure that the supply voltage matches the indicated supply
voltage of the apparatus.
2)
With reference to the power requirements on the instrument's rear panel, a three-core power
cord is used to ensure reliable grounding of the power wire during use. Poor floating or grounding
may cause damage to the instrument or harm to the user.
3)
Do not damage the power cord; otherwise leakage will occur, which may damage the
instrument and even cause injury to the operator. If an external power cord or terminal board is
used, check it before use to ensure the electrical safety.
4)
If the power outlet is not equipped with ON/OFF switch, the instrument can be directly
unplugged for deenergization. For this purpose, it is necessary to ensure that the instrument can
be plugged and unplugged conveniently.
5)
Do not use a damaged power cord. It is necessary to check the integrity and safety of the
power cord before connecting it to the instrument, and place it reasonably to avoid the influence
due to human factors, e.g. the operator is tripped by an excessively long power cord.
CAUTION
NOTE