Installation Manual
H3C SecPath F100-C Firewall
Chapter 2 Preparing for Installation
2-3
Gas
Maximum (mg/m
3
)
NH
3
0.05
Cl
2
0.01
2.1.3 ESD Prevention
Although the H3C SecPath F100-C takes measures to prevent
electrostatic discharge (ESD), its card circuits and even the device can
be badly damaged when excessive static electricity is present.
On the communication network connected to your device, the
static electricity mainly comes from the outside electrical fields, such
as outdoor high-voltage power cables and lightning, and from the
indoor environments, floor materials and the internal system such as
the equipment frame. To prevent damage, observe the following:
z
Earth the device and floor well.
z
Keep the equipment room as clean as possible.
z
Maintain adequate temperature and humidity.
z
Wear an ESD-preventive wrist strap and clothes when
handling the circuit board.
z
Place the removed circuit board upward on the
ESD-preventive table, or into a static shielding bag.
z
Hold the circuit board by its edge when observing or moving
it, avoiding direct contact with the elements on it.
2.1.4 Electromagnetic Environment
All interference sources, wherever they are from, impact the H3C
SecPath F100-C negatively in the conducted emission patterns of
