Electromagnetic Protection
This section describes the electromagnetic protection requirements.
Check that the equipment room meets these requirements so as to ensure
the normal running of the USG.
Possible interference sources are as follows:
- Capacitive coupling
- Inductance coupling
- Electromagnetic radiation
- Common impedance (including the PGND system) coupling
To reduce as much interference as possible, complete the following
steps:
- Take effective measures to avoid possible power grid interference
to the power supply system.
- Do not use the power line ground or lightning protection ground
as the working ground of the device, and leave as much space as possible
between the working ground of the device and the power line ground
or lightning protection ground.
- Ensure that no high-power radio transmitter, radar transmitter,
or high-frequency high-current device is deployed nearby.
- Take electromagnetic protection measures if necessary.