6
Subject to change without notice
General
Symbols
See user’s manual
Danger high voltage
Earth
General Information
This oscilloscope is easy to operate. The logical arrangement
of the controls allows anyone to quickly become familiar with
the operation of the instrument, however, experienced users
are also advised to read through these instructions so that all
functions are understood.
Immediately after unpacking, the instrument should be checked
for mechanical damage and loose parts in the interior. If there
is transport damage, the supplier must be informed immediately.
The instrument must then not be put into operation.
Use of tilt handle
To view the screen from the best angle, there are three different
positions (C, D, E) for setting up the instrument. If the instrument
is set down on the floor after being carried, the handle
automatically remains in the upright carrying position (A).
In order to place the instrument onto a horizontal surface, the
handle should be turned to the upper side of the oscilloscope
(C). For the D position (10° inclination), the handle should be
turned to the opposite direction of the carrying position until it
locks in place automatically underneath the instrument. For the
E position (20° inclination), the handle should be pulled to
release it from the D position and swing backwards until it locks
once more.
The handle may also be set to a position for horizontal carrying
by turning it to the upper side to lock in the B position. At the
same time, the instrument must be lifted, because otherwise
the handle will jump back.
Safety
This instrument has been designed and tested in accordance
with
IEC Publication 348, Safety Requirements for Electronic
Measuring Apparatu
s. The CENELEC HD401 regulations
correspond to this standard. It has left the factory in a safe
condition. This instruction manual contains important
information and warnings which have to be followed by the user
to ensure safe operation and to retain the oscilloscope in a safe
condition. The case, chassis and all measuring terminals are
connected to the protective earth contact of the appliance inlet.
The instrument operates according to
Safety Class I
(three-
conductor power cord with protective earthing conductor and
a plug with earthing contact). The mains/line plug shall only be
inserted in a socket outlet provided with a protective earth
contact. The protective action must not be negated by the use
of an extension cord without a protective conductor.
The mains/line plug should be inserted before connections are
made to measuring circuits.
The grounded accessible metal parts (case, sockets, jacks) and
the mains/line supply contacts (line/live, neutral) of the
instrument have been tested against insulation breakdown
with 2200V DC.
Under certain conditions, 50Hz or 60Hz hum voltages can occur
in the measuring circuit due to the interconnection with other
mains/line powered equipment or instruments. This can be
avoided by using an isolation transformer (Safety Class II)
between the mains/line outlet and the power plug of the device
being investigated.
Most cathode-ray tubes develop X-rays. However,
the dose
equivalent rate falls far below the maximum permissible
value of 36pA/kg (0.5mR/h).
Whenever it is likely that protection has been impaired, the
instrument shall be made inoperative and be secured against
any unintended operation. The protection is likely to be impaired
if, for example, the instrument
-
shows visible damage,
-
fails to perform the intended measurements,
-
has been subjected to prolonged storage under unfavourable
conditions (e.g. in the open or in moist environments),
-
has been subject to severe transport stress (e.g. in poor
packaging).
Intended purpose and operating conditions
This instrument must be used only by qualified experts who are
aware of the risks of electrical measurement.
The instrument is specified for operation in industry, light
industry, commercial and residential environments.
Due to safety reasons the instrument must only be connected
to a properly installed power outlet, containing a protective
earth conductor. The protective earth connection must not be
broken. The power plug must be inserted in the power outlet
while any connection is made to the test device.
The instrument has been designed for indoor use. The
permissible ambient temperature range during operation is
+10°C (+50°F) ... +40°C (+104°F). It may occasionally be
subjected to temperatures b10°C (+50°F) and -10°C
(+14°F) without degrading its safety. The permissible ambient
temperature range for storage or transportation is -40°C (-40°F)
... +70°C (+158°F). The maximum operating altitude is up to
2200m (non-operating 15000m). The maximum relative
humidity is up to 80%.
If condensed water exists in the instrument it should be
acclimatized before switching on. In some cases (e.g. extremely
cold oscilloscope) two hours should be allowed before the
instrument is put into operation. The instrument should be kept
in a clean and dry room and must not be operated in explosive,
