HP JG708A User Manual

5
• Keep the switch far away from radio transmitting stations, radar stations, and high-frequency
devices.
• Use electromagnetic shielding, for example, shielded interface cables, when necessary.
• Route interface cables indoors.
Lightning protection
To better protect the switch from lightning, follow these guidelines:
• Make sure the grounding cable of the chassis is well grounded.
• Make sure the grounding terminal of the AC power receptacle is well grounded.
Installation preparation checklist
Table 5 Installation preparation checklist
Item Requirements Result
Installation
site
Ventilation
• There is a minimum clearance of 10 cm (3.9 in) around
the inlet and outlet vents for heat dissipation of the switch
chassis.
• A ventilation system is available at the installation site.
Temperature 0°C to 45°C (32°F to 113°F)
Relative humidity 5% to 95% (noncondensing)
Cleanness
• Dust concentration ≤ 3 × 104 particles/m3
• No dust on desk within three days.
ESD prevention
• The equipment and rack are well grounded.
• The equipment room is dust-proof.
• The humidity and temperature are at a proper level.
• Wear an ESD-preventive wrist strap. Make sure the wrist
strap makes good skin contact and is well grounded.
EMI prevention
• Take effective measures to protect the power system from
the power grid system.
• Separate the protection ground of the switch from the
grounding device or lightning protection grounding
device as far as possible.
• Keep the switch far away from radio stations and radar
and high-frequency devices working in high current.
• Use electromagnetic shielding when necessary.
Lightning
protection
• The grounding cable of the chassis is well grounded.
• The grounding terminal of the AC power receptacle is
well grounded.
Electricity safety
• Equip a UPS.
• In case of emergency during operation, switch off the
external power switch.

HP JG708A Specifications

General

Brand	HP
Model	JG708A
Category	Switch
Language	English