7
Safety Guidelines
General
Guideline
CAUTION
•
Make sure the BNC input voltage does not
exceed 300V peak.
•
Never connect a hazardous live voltage to the
ground side of the BNC connectors. It might
lead to fire and electric shock.
•
Do not place heavy objects on the oscilloscope.
•
Avoid severe impacts or rough handling that
may damage the oscilloscope.
•
Avoid discharges of static electricity on or near
the oscilloscope.
•
Use only mating connectors, not bare wires, for
the terminals.
•
Do not block the cooling fan opening.
•
Do not perform measurement at power source
and building installation site (Note below).
•
The oscilloscope should only be disassembled
by a qualified technician.
(Measurement categories) EN 61010-1:2001 specifies the
measurement categories and their requirements as follows. The
DSO-4000 falls under category II.
•
Measurement category IV is for measurement performed at the
source of low-voltage installation.
•
Measurement category III is for measurement performed in the
building installation.
•
Measurement category II is for measurement performed on the
circuits directly connected to the low voltage installation.
•
Measurement category I is for measurements performed on
circuits not directly connected to Mains.
Power Supply
WARNING
•
AC Input voltage: 100 ~ 240V AC, 47 ~ 63Hz
•
The power supply voltage should not fluctuate
more than 10%.
•
Connect the protective grounding conductor of
the AC power cord to an earth ground.
DSO-4000 User Manual
8
Fuse
WARNING
•
Fuse type: T1A/250V
•
To ensure fire protection, replace the fuse only
with the specified type and rating.
•
Disconnect the power cord before replacing the
fuse.
•
Make sure the cause of fuse blowout is fixed
before replacing the fuse.
Cleaning the
oscilloscope
•
Disconnect the power cord before cleaning the
oscilloscope.
•
Use a soft cloth dampened in a solution of mild
detergent and water. Do not spray any liquid
into the oscilloscope.
•
Do not use chemical containing harsh products
such as benzene, toluene, xylene, and acetone.
Operation
Environment
•
Location: Indoor, no direct sunlight, dust free,
almost non-conductive pollution (Note below)
•
Relative Humidity: < 80%
•
Altitude: < 2000m
•
Temperature: 0°C to 50°C
(Pollution Degree) EN 61010-1:2001 specifies the pollution degrees
and their requirements as follows. the oscilloscope falls under
degree 2.
Pollution refers to “addition of foreign matter, solid, liquid, or
gaseous (ionized gases), that may produce a reduction of dielectric
strength or surface resistivity”.
•
Pollution degree 1: No pollution or only dry, non-conductive
pollution occurs. The pollution has no influence.
•
Pollution degree 2: Normally only non-conductive pollution
occurs. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
•
Pollution degree 3: Conductive pollution occurs, or dry, non-
conductive pollution occurs which becomes conductive due to
condensation which is expected. In such conditions, equipment
is normally protected against exposure to direct sunlight,
precipitation, and full wind pressure, but neither temperature
nor humidity is controlled.
