UNI-T UPO2102 User Manual page 5

User's Manual
Caution
Note
AC
DC
Grounding
Grounding
Grounding
OFF
ON
Power
Supply
CAT I
CAT II
CAT III
CAT IV
Certification
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It indicates possible danger, which may cause damage to this device or other
equipment if you fail to follow a certain procedure or condition. If the
"Caution" sign is present, all conditions must be met before you proceed to
operation.
It indicates potential problems, which may cause failure of this device if you
fail to follow a certain procedure or condition. If the "Note" sign is present, all
conditions must be met before this device will function properly.
Alternating current of device. Please check the region's voltage range.
Direct current device. Please check the region's voltage range.
Frame and chassis grounding terminal.
Protective grounding terminal.
Measuring grounding terminal.
Main power off.
Main power on.
Standby power supply: when the power switch is turned off, this device is not
completely disconnected from the AC power supply.
Secondary electrical circuit connected to wall sockets through transformers
or similar equipment, such as electronic instruments and electronic
equipment; electronic equipment with protective measures, and any high-
voltage and low-voltage circuits, such as the copier in the office
CATII: Primary electrical circuit of the electrical equipment connected to the
indoor socket via the power cord, such as mobile tools, home appliances,
etc. Household appliances, portable tools (e.g. electric drill), household
sockets, sockets more than 10 meters away from CAT III circuit or sockets
more than 20 meters away from CAT IV circuit
Primary circuit of large equipment directly connected to the distribution
board and circuit between the distribution board and the socket (three-phase
distributor circuit includes a single commercial lighting circuit). Fixed
equipment, such as multi-phase motor and multi-phase fuse box; lighting
equipment and lines inside large buildings; machine tools and power
distribution boards at industrial sites (workshops)
Three-phase public power unit and outdoor power supply line equipment.
Equipment designed to "initial connection", such as power distribution
system of power station, power instrument, front-end overload protection,
and any outdoor transmission line
CE indicates a registered trademark of EU.
MSO/UPO2000 Seri es
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