Appendix A Equipment Operation Environment Requirements
l
Before entering the communication equipment room, wear the antistatic suit that
meets the GB 12014 requirement and antistatic shoes that meet the GB 4385
requirement. Do not change clothes or comb hair in the equipment room.
l
Installation of the antistatic facilities should be complete before the unpacking
inspection of equipment.
l
The antistatic cover for the rack (or the printed circuit board component) should be
unpacked after the installation of rack and antistatic grounding cables.
l
The tools used on site should be antistatic.
l
Abide by the relevant grounding requirements when installing grounding cables.
l
When plugging/unplugging the printed circuit board component and performing cable
connection, strictly observe the antistatic rules and wear antistatic wrist strap. The
grounding terminal of the antistatic strap should be inserted into the antistatic jack
on the rack. The strap and skin are reliably in contact. The current-limiting resistor
connected in series in the clasp connector of the strap protects human body and
static-sensitive components from static harm. The leakage resistance of the antistatic
strap should be within 1×105 – 1×107 Ω.
l
Spare printed circuit board component and the component to be repaired should be
placed on the rack or in the antistatic shielding bag.
l
The printed circuit board to be sent to the manufacturer or maintenance center for
repairs should be put in the antistatic shielding bag first; then packed with antistatic
marks on the package before delivery.
l
The drawings, documents, files and books in the equipment room should be put in
the antistatic shielding bag. When used, the drawings, documents, files and books
should be far from the static-sensitive components.
l
Visitors (including management personnel) must wear antistatic suit and shoes
before entering the equipment room. Visitors are not allowed to touch/plug/unplug
the printed circuit board components, or touch other components/spare parts if no
further antistatic measures are taken (for example, wear antistatic wrist strap).
l
If the equipment room is too dry, use humidifier or take other measures to meet the
humidity requirements of the equipment room.
l
Install ionized static eliminator if necessary, to remove the static electricity in the
insulation material and reduce the static voltage in the equipment room.
l
The mats or gloves used in the equipment room should be antistatic.
A.6 Electromagnetic Environment
The equipment room grounding network should provide low impedance connection for
equipment racks, shelves and filters.
The equipment Electromagnetic Susceptibility (
EMS
) requirements are presented below.
l
For the whole equipment, EMS meets the European Telecommunication Standard
Institute (
ETSI
) 300386 requirements.
l
For equipment ports, EMS meets the GR1089 TYPE2 port requirements.
The Electromagnetic Interference (
EMI
) requirements for electromagnetic emission are
presented below.
A-5
SJ-20110901170352-005|2011-10-15 (R2.0)
ZTE Proprietary and Confidential
Содержание ZXR10 T8000 Series
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