User manual
6
Installation and safetyinstructions
1.9 Measurement categories
This oscilloscope is designed for measurements on circuits
that are only indirectly connected to the mains or not con-
nected at all. Make sure the entry voltage does not exceed
200 V (peak value), 150V
RMS
at1MΩandand5V
RMS
at
50Ωinputimpedance.Theentryvoltageoftheexternal
trigger input (TRIG. EXT.) does not exceeded 100V (peak
value). The maximum value allowed for transient overvolta-
ges is 200V (peak value). To ensure compliance, it is neces-
sary to only use probes that have been manufactured and
tested in accordance with DIN EN 61010-031 in order to
prevent transient overvoltages at the measurement input.
When performing measurements in category II, III or IV
circuits, it is mandatory to insert a probe that reduces the
voltage so that no transient overvoltages will be applied
to the instrument. Direct measurements (without galvanic
isolation) to category II, III or IV circuits are prohibited. The
measuring circuits are considered not connected to the
mains if an isolation transformer in compliance with class
II is used. It is also possible to perform measurements on
the mains if appropriate transformers (e.g. current connec-
tors) are used that are in compliance with safety class II.
The measurement category (for which the manufacturer
speciedtherequiredtransformer)mustbeobserved.
The measurement categories refer to transients that are
superimposed on the mains voltage. Transients are short,
very fast (steep) current and voltage variations which may
occur periodically and non-periodically. The level of poten-
tial transients increases as the distance to the source of
the low voltage installation decreases.
❙ Measurement CAT IV: Measurements at the source of
the low voltage installations (e.g. meters)
❙ Measurement CAT III: Measurements in building
installations (e.g. power distribution installations, power
switches,rmlyinstalledsockets,rmlyinstalledengines
etc.).
❙ Measurement CAT II: Measurements on circuits
electronically directly connected to the mains (e.g.
household appliances, power tools, etc.)
❙ 0 (instruments without measured measurement
category): Other circuits that are not connected directly
to the mains.
1.10 Mains voltage
The instrument has a wide range power supply from 100
to 240 V (±10%), 50 or 60 Hz. There is hence no line vol-
tage selector. The line fuse is accessible on the rear panel
and part of the line input connector. Prior to exchanging
Before cleaning the measuring instrument, please make sure that
it has been switched off and disconnected from all power sup-
plies (e.g. AC supply network or battery).
No parts of the instruments may be cleaned with chemical clean-
ing agents (such as alcohol, acetone or cellulose thinner)!
a fuse, the line cord must be pulled out. Exchange is only
allowed if the fuse holder is undamaged. It can be taken
out using a screwdriver put into the slot. The fuse can be
pushed out of its holder and must be exchanged with the
identical type (type informations below). The holder with
the new fuse can then be pushed back in place against the
spring. It is prohibited to ”repair“ blown fuses or to bridge
the fuse. Any damages incurred by such measures will
void the warranty.
Type of fuse: IEC 60127 - T2.5H 250V (Size 5 x 20 mm).
1.11 Batteries and rechargeable batteries / cells
1. Cells must not be taken apart or crushed.
2. Cellsorbatteriesmustnotbeexposedtoheatorre.
Storage in direct sunlight must be avoided. Keep cells
and batteries clean and dry. Clean soiled connectors
using a dry, clean cloth.
3. Cells or batteries must not be short-circuited. Cells or
batteries must not be stored in a box or in a drawer
where they can short-circuit each other, or where they
can be short-circuited by other conductive materials.
Cells and batteries must not be removed from their
original packaging until they are ready to be used.
4. Keep cells and batteries out of the hands of children. If
a cell or a battery has been swallowed, seek medical
aid immediately.
5. Cells and batteries must not be exposed to any mecha-
nical shocks that are stronger than permitted.
6. Ifacelldevelopsaleak,theuidmustnotbeallowed
to come into contact with the skin or eyes. If contact
occurs, wash the affected area with plenty of water
and seek medical aid.
7. Improperly replacing or charging cells or batteries can
cause explosions. Replace cells or batteries only with
the identical type in order to ensure the safety of the
product.
8. Cells and batteries must be recycled and kept separate
from residual waste. Rechargeable batteries and nor-
mal batteries that contain lead, mercury or cadmium
are hazardous waste. Observe the national regulations
regarding waste disposal and recycling.
If the information regarding batteries and rechargeable batteries/
cells is not observed either at all or to the extent necessary, pro-
duct users may be exposed to the risk of explosions, re and/or
serious personal injury, and, in some cases, death. Batteries and
rechargeable batteries with alkaline electrolytes (e.g. lithium cells)
must be handled in accordance with the EN 62133 standard.