1-4
EMI
All electromagnetic interference (EMI) sources, from outside or inside of the switch and application
system, adversely affect the switch in the following ways:
•
A conduction pattern of capacitance coupling.
•
Inductance coupling.
•
Electromagnetic wave radiation.
•
Common impedance (including the grounding system) coupling.
To prevent EMI, use the following guidelines:
•
If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE)
to filter interference from the power grid.
•
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.
•
To prevent signal ports from getting damaged by overvoltage or overcurrent caused by lightning
strikes, route interface cables only indoors.
Laser safety
WARNING!
•
The switch is a Class 1M laser device.
•
Disconnected optical fibers or transceiver modules might emit invisible laser light. Do not stare
into beams or view directly with optical instruments when the switch is operating.
Installation tools
No installation tools are provided with the switch. Prepare the following tools yourself:
•
Phillips screwdriver.
•
Flathead screwdriver.
•
ESD wrist strap.
•
Marker.
Installation accessories
Before installation, make sure you have all the required installation accessories. If any accessory is
damaged or missing, use the part No. provided in this table to purchase a new one.
Table1-4 Installation accessories
Part No.
Description
Quantity
Applicable
device models
5066-0850
Mounting brackets
1 pair, provided
HPE 5944 48XGT
6QS28
